./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix000.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix000.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix000.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix000.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:15:24,024 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:15:24,106 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:15:24,109 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:15:24,110 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:15:24,126 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:15:24,127 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:15:24,127 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:15:24,127 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:15:24,128 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:15:24,128 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:15:24,128 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:15:24,129 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:15:24,129 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:15:24,129 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:15:24,130 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:15:24,130 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:15:24,130 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:15:24,130 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:15:24,131 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:15:24,131 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:15:24,131 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:15:24,132 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:15:24,132 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:15:24,132 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:15:24,132 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:15:24,133 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:15:24,133 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:15:24,133 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:15:24,134 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:15:24,134 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:15:24,135 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:15:24,135 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:15:24,135 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:15:24,135 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:15:24,136 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:15:24,136 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:15:24,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:15:24,136 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:15:24,136 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:15:24,137 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:15:24,137 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:15:24,137 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:15:24,137 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:15:24,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:15:24,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:15:24,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:15:24,362 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:15:24,362 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:15:24,363 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix000.opt.i [2024-06-28 01:15:25,525 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:15:25,692 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:15:25,692 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix000.opt.i [2024-06-28 01:15:25,705 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1c6f2750/9788662f38c5457c930444caa0291af1/FLAG5cbb324cb [2024-06-28 01:15:25,715 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1c6f2750/9788662f38c5457c930444caa0291af1 [2024-06-28 01:15:25,717 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:15:25,717 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:15:25,718 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix000.opt.yml/witness.yml [2024-06-28 01:15:25,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:15:25,857 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:15:25,858 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:15:25,858 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:15:25,861 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:15:25,862 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:15:25" (1/2) ... [2024-06-28 01:15:25,863 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6135fa65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:15:25, skipping insertion in model container [2024-06-28 01:15:25,863 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:15:25" (1/2) ... [2024-06-28 01:15:25,864 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4ca4b0a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:15:25, skipping insertion in model container [2024-06-28 01:15:25,864 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:15:25" (2/2) ... [2024-06-28 01:15:25,864 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6135fa65 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:15:25, skipping insertion in model container [2024-06-28 01:15:25,865 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:15:25" (2/2) ... [2024-06-28 01:15:25,866 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:15:25,919 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:15:25,921 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ((((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$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)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) [2024-06-28 01:15:25,921 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ((((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) [2024-06-28 01:15:25,921 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:15:25,921 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-28 01:15:25,959 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:15:26,108 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/mix000.opt.i[987,1000] [2024-06-28 01:15:26,290 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:15:26,298 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:15:26,325 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/mix000.opt.i[987,1000] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:15:26,398 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:15:26,426 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:15:26,427 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:15:26 WrapperNode [2024-06-28 01:15:26,427 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:15:26,428 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:15:26,428 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:15:26,428 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:15:26,433 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 01:15:26" (1/1) ... [2024-06-28 01:15:26,462 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 01:15:26" (1/1) ... [2024-06-28 01:15:26,490 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 133 [2024-06-28 01:15:26,492 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:15:26,494 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:15:26,494 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:15:26,494 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:15:26,510 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 01:15:26" (1/1) ... [2024-06-28 01:15:26,510 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 01:15:26" (1/1) ... [2024-06-28 01:15:26,525 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 01:15:26" (1/1) ... [2024-06-28 01:15:26,542 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 01:15:26,547 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 01:15:26" (1/1) ... [2024-06-28 01:15:26,548 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 01:15:26" (1/1) ... [2024-06-28 01:15:26,557 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 01:15:26" (1/1) ... [2024-06-28 01:15:26,567 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 01:15:26" (1/1) ... [2024-06-28 01:15:26,569 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 01:15:26" (1/1) ... [2024-06-28 01:15:26,577 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 01:15:26" (1/1) ... [2024-06-28 01:15:26,580 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:15:26,581 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:15:26,581 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:15:26,581 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:15:26,582 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 01:15:26" (1/1) ... [2024-06-28 01:15:26,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:15:26,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:15:26,609 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 01:15:26,612 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 01:15:26,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:15:26,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:15:26,641 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:15:26,641 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:15:26,641 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:15:26,641 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:15:26,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:15:26,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:15:26,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:15:26,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:15:26,643 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 01:15:26,736 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:15:26,737 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:15:27,007 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:15:27,008 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:15:27,152 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:15:27,153 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:15:27,154 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:15:27 BoogieIcfgContainer [2024-06-28 01:15:27,154 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:15:27,157 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:15:27,158 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:15:27,160 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:15:27,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:15:25" (1/4) ... [2024-06-28 01:15:27,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af6b208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:15:27, skipping insertion in model container [2024-06-28 01:15:27,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:15:25" (2/4) ... [2024-06-28 01:15:27,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af6b208 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:15:27, skipping insertion in model container [2024-06-28 01:15:27,166 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 01:15:26" (3/4) ... [2024-06-28 01:15:27,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af6b208 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:15:27, skipping insertion in model container [2024-06-28 01:15:27,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:15:27" (4/4) ... [2024-06-28 01:15:27,168 INFO L112 eAbstractionObserver]: Analyzing ICFG mix000.opt.i [2024-06-28 01:15:27,182 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:15:27,183 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:15:27,183 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:15:27,211 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:15:27,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-06-28 01:15:27,278 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-06-28 01:15:27,278 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:15:27,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-06-28 01:15:27,282 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-06-28 01:15:27,285 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-06-28 01:15:27,292 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:15:27,297 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;@4104c30f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:15:27,297 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:15:27,299 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:15:27,299 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:15:27,300 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:15:27,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:27,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:15:27,301 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:27,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:27,305 INFO L85 PathProgramCache]: Analyzing trace with hash 345507155, now seen corresponding path program 1 times [2024-06-28 01:15:27,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:27,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947645282] [2024-06-28 01:15:27,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:27,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:28,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:28,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:28,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947645282] [2024-06-28 01:15:28,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947645282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:28,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:28,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:15:28,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328831454] [2024-06-28 01:15:28,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:28,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:15:28,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:28,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:15:28,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:15:28,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-06-28 01:15:28,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 76 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 01:15:28,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:28,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-06-28 01:15:28,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:28,516 INFO L124 PetriNetUnfolderBase]: 384/793 cut-off events. [2024-06-28 01:15:28,517 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-28 01:15:28,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1457 conditions, 793 events. 384/793 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4451 event pairs, 284 based on Foata normal form. 31/742 useless extension candidates. Maximal degree in co-relation 1446. Up to 639 conditions per place. [2024-06-28 01:15:28,526 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 29 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-28 01:15:28,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 165 flow [2024-06-28 01:15:28,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:15:28,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:15:28,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-06-28 01:15:28,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7117117117117117 [2024-06-28 01:15:28,536 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 79 transitions. [2024-06-28 01:15:28,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 165 flow [2024-06-28 01:15:28,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:15:28,541 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 100 flow [2024-06-28 01:15:28,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-06-28 01:15:28,546 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-28 01:15:28,546 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 100 flow [2024-06-28 01:15:28,547 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 01:15:28,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:28,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:28,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:15:28,547 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:28,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:28,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1319925042, now seen corresponding path program 1 times [2024-06-28 01:15:28,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:28,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725710990] [2024-06-28 01:15:28,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:28,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:28,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:28,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:28,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725710990] [2024-06-28 01:15:28,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725710990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:28,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:28,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:15:28,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861211500] [2024-06-28 01:15:28,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:29,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:15:29,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:29,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:15:29,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:15:29,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-28 01:15:29,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:29,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:29,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-28 01:15:29,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:29,183 INFO L124 PetriNetUnfolderBase]: 539/942 cut-off events. [2024-06-28 01:15:29,183 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-06-28 01:15:29,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2066 conditions, 942 events. 539/942 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4943 event pairs, 211 based on Foata normal form. 2/891 useless extension candidates. Maximal degree in co-relation 2054. Up to 870 conditions per place. [2024-06-28 01:15:29,189 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 39 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-06-28 01:15:29,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 238 flow [2024-06-28 01:15:29,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:15:29,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:15:29,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-06-28 01:15:29,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-06-28 01:15:29,192 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 100 flow. Second operand 4 states and 96 transitions. [2024-06-28 01:15:29,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 238 flow [2024-06-28 01:15:29,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:15:29,195 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 134 flow [2024-06-28 01:15:29,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-06-28 01:15:29,196 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-06-28 01:15:29,196 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 134 flow [2024-06-28 01:15:29,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:29,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:29,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:29,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:15:29,197 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:29,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:29,201 INFO L85 PathProgramCache]: Analyzing trace with hash -2031995632, now seen corresponding path program 1 times [2024-06-28 01:15:29,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:29,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375537628] [2024-06-28 01:15:29,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:29,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:29,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:29,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:29,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375537628] [2024-06-28 01:15:29,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375537628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:29,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:29,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:15:29,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931124134] [2024-06-28 01:15:29,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:29,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:15:29,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:29,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:15:29,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:15:29,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-28 01:15:29,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:29,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:29,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-28 01:15:29,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:29,973 INFO L124 PetriNetUnfolderBase]: 531/902 cut-off events. [2024-06-28 01:15:29,974 INFO L125 PetriNetUnfolderBase]: For 315/315 co-relation queries the response was YES. [2024-06-28 01:15:29,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2197 conditions, 902 events. 531/902 cut-off events. For 315/315 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4513 event pairs, 85 based on Foata normal form. 4/864 useless extension candidates. Maximal degree in co-relation 2183. Up to 824 conditions per place. [2024-06-28 01:15:29,978 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 48 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2024-06-28 01:15:29,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 320 flow [2024-06-28 01:15:29,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:15:29,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:15:29,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-28 01:15:29,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-06-28 01:15:29,980 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 134 flow. Second operand 5 states and 120 transitions. [2024-06-28 01:15:29,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 320 flow [2024-06-28 01:15:29,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 68 transitions, 306 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 01:15:29,983 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 168 flow [2024-06-28 01:15:29,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=168, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2024-06-28 01:15:29,983 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2024-06-28 01:15:29,984 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 168 flow [2024-06-28 01:15:29,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:29,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:29,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:29,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:15:29,984 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:29,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:29,985 INFO L85 PathProgramCache]: Analyzing trace with hash -2032576853, now seen corresponding path program 1 times [2024-06-28 01:15:29,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:29,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067021335] [2024-06-28 01:15:29,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:29,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:30,054 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 01:15:30,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:30,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067021335] [2024-06-28 01:15:30,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067021335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:30,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:30,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:15:30,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550478465] [2024-06-28 01:15:30,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:30,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:15:30,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:30,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:15:30,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:15:30,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-06-28 01:15:30,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 168 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 01:15:30,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:30,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-06-28 01:15:30,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:30,124 INFO L124 PetriNetUnfolderBase]: 206/514 cut-off events. [2024-06-28 01:15:30,124 INFO L125 PetriNetUnfolderBase]: For 252/272 co-relation queries the response was YES. [2024-06-28 01:15:30,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1054 conditions, 514 events. 206/514 cut-off events. For 252/272 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3071 event pairs, 102 based on Foata normal form. 6/485 useless extension candidates. Maximal degree in co-relation 1039. Up to 324 conditions per place. [2024-06-28 01:15:30,126 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 21 selfloop transitions, 5 changer transitions 0/46 dead transitions. [2024-06-28 01:15:30,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 205 flow [2024-06-28 01:15:30,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:15:30,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:15:30,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-06-28 01:15:30,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7297297297297297 [2024-06-28 01:15:30,128 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 168 flow. Second operand 3 states and 81 transitions. [2024-06-28 01:15:30,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 205 flow [2024-06-28 01:15:30,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 190 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 01:15:30,129 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 134 flow [2024-06-28 01:15:30,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-28 01:15:30,130 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2024-06-28 01:15:30,130 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 134 flow [2024-06-28 01:15:30,131 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 01:15:30,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:30,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:30,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:15:30,131 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:30,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:30,132 INFO L85 PathProgramCache]: Analyzing trace with hash 903386637, now seen corresponding path program 1 times [2024-06-28 01:15:30,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:30,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428260192] [2024-06-28 01:15:30,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:30,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:30,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:30,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:30,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428260192] [2024-06-28 01:15:30,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428260192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:30,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:30,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:15:30,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167803427] [2024-06-28 01:15:30,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:30,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:15:30,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:30,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:15:30,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:15:30,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-28 01:15:30,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 134 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:30,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:30,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-28 01:15:30,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:30,849 INFO L124 PetriNetUnfolderBase]: 414/871 cut-off events. [2024-06-28 01:15:30,849 INFO L125 PetriNetUnfolderBase]: For 491/494 co-relation queries the response was YES. [2024-06-28 01:15:30,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1948 conditions, 871 events. 414/871 cut-off events. For 491/494 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4881 event pairs, 202 based on Foata normal form. 4/838 useless extension candidates. Maximal degree in co-relation 1932. Up to 687 conditions per place. [2024-06-28 01:15:30,853 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 38 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-06-28 01:15:30,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 56 transitions, 270 flow [2024-06-28 01:15:30,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:15:30,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:15:30,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2024-06-28 01:15:30,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459459459459459 [2024-06-28 01:15:30,855 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 134 flow. Second operand 5 states and 101 transitions. [2024-06-28 01:15:30,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 56 transitions, 270 flow [2024-06-28 01:15:30,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:15:30,856 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 175 flow [2024-06-28 01:15:30,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-06-28 01:15:30,857 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-06-28 01:15:30,875 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 175 flow [2024-06-28 01:15:30,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:30,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:30,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:30,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:15:30,876 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:30,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:30,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1911752464, now seen corresponding path program 1 times [2024-06-28 01:15:30,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:30,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710941118] [2024-06-28 01:15:30,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:30,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:31,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:31,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:31,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710941118] [2024-06-28 01:15:31,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710941118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:31,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:31,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:15:31,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940059719] [2024-06-28 01:15:31,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:31,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:15:31,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:31,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:15:31,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:15:32,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-28 01:15:32,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 175 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:32,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:32,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-28 01:15:32,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:32,378 INFO L124 PetriNetUnfolderBase]: 463/914 cut-off events. [2024-06-28 01:15:32,378 INFO L125 PetriNetUnfolderBase]: For 722/722 co-relation queries the response was YES. [2024-06-28 01:15:32,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2251 conditions, 914 events. 463/914 cut-off events. For 722/722 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4914 event pairs, 149 based on Foata normal form. 4/878 useless extension candidates. Maximal degree in co-relation 2233. Up to 678 conditions per place. [2024-06-28 01:15:32,382 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 54 selfloop transitions, 12 changer transitions 6/82 dead transitions. [2024-06-28 01:15:32,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 82 transitions, 407 flow [2024-06-28 01:15:32,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:15:32,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:15:32,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-28 01:15:32,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5945945945945946 [2024-06-28 01:15:32,383 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 175 flow. Second operand 7 states and 154 transitions. [2024-06-28 01:15:32,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 82 transitions, 407 flow [2024-06-28 01:15:32,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 82 transitions, 398 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 01:15:32,386 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 195 flow [2024-06-28 01:15:32,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=195, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2024-06-28 01:15:32,386 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-06-28 01:15:32,387 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 195 flow [2024-06-28 01:15:32,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:32,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:32,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:32,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:15:32,387 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:32,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:32,388 INFO L85 PathProgramCache]: Analyzing trace with hash -2059783691, now seen corresponding path program 1 times [2024-06-28 01:15:32,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:32,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505934245] [2024-06-28 01:15:32,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:32,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:33,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:33,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:33,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505934245] [2024-06-28 01:15:33,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505934245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:33,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:33,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:15:33,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810595700] [2024-06-28 01:15:33,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:33,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:15:33,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:33,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:15:33,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:15:33,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-28 01:15:33,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 195 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:33,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:33,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-28 01:15:33,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:33,404 INFO L124 PetriNetUnfolderBase]: 356/749 cut-off events. [2024-06-28 01:15:33,405 INFO L125 PetriNetUnfolderBase]: For 856/858 co-relation queries the response was YES. [2024-06-28 01:15:33,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1960 conditions, 749 events. 356/749 cut-off events. For 856/858 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4107 event pairs, 117 based on Foata normal form. 4/729 useless extension candidates. Maximal degree in co-relation 1939. Up to 570 conditions per place. [2024-06-28 01:15:33,408 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 43 selfloop transitions, 9 changer transitions 0/63 dead transitions. [2024-06-28 01:15:33,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 63 transitions, 347 flow [2024-06-28 01:15:33,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:15:33,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:15:33,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-06-28 01:15:33,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5315315315315315 [2024-06-28 01:15:33,410 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 195 flow. Second operand 6 states and 118 transitions. [2024-06-28 01:15:33,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 63 transitions, 347 flow [2024-06-28 01:15:33,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 321 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 01:15:33,414 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 204 flow [2024-06-28 01:15:33,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-06-28 01:15:33,416 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2024-06-28 01:15:33,416 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 204 flow [2024-06-28 01:15:33,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:33,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:33,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:33,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:15:33,417 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:33,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:33,417 INFO L85 PathProgramCache]: Analyzing trace with hash 564510764, now seen corresponding path program 1 times [2024-06-28 01:15:33,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:33,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767120315] [2024-06-28 01:15:33,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:33,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:33,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:33,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:33,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767120315] [2024-06-28 01:15:33,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767120315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:33,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:33,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:15:33,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760615079] [2024-06-28 01:15:33,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:33,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:15:33,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:33,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:15:33,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:15:33,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:15:33,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 204 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 01:15:33,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:33,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:15:33,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:34,203 INFO L124 PetriNetUnfolderBase]: 475/927 cut-off events. [2024-06-28 01:15:34,203 INFO L125 PetriNetUnfolderBase]: For 1153/1153 co-relation queries the response was YES. [2024-06-28 01:15:34,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2515 conditions, 927 events. 475/927 cut-off events. For 1153/1153 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4908 event pairs, 144 based on Foata normal form. 1/895 useless extension candidates. Maximal degree in co-relation 2492. Up to 763 conditions per place. [2024-06-28 01:15:34,208 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 50 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2024-06-28 01:15:34,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 387 flow [2024-06-28 01:15:34,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:15:34,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:15:34,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-28 01:15:34,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49099099099099097 [2024-06-28 01:15:34,210 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 204 flow. Second operand 6 states and 109 transitions. [2024-06-28 01:15:34,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 387 flow [2024-06-28 01:15:34,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 68 transitions, 368 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:15:34,213 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 247 flow [2024-06-28 01:15:34,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=247, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2024-06-28 01:15:34,215 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2024-06-28 01:15:34,215 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 247 flow [2024-06-28 01:15:34,215 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 01:15:34,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:34,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:34,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:15:34,215 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:34,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:34,216 INFO L85 PathProgramCache]: Analyzing trace with hash 571206764, now seen corresponding path program 2 times [2024-06-28 01:15:34,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:34,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597292408] [2024-06-28 01:15:34,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:34,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:34,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:34,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:34,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597292408] [2024-06-28 01:15:34,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597292408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:34,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:34,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:15:34,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119341371] [2024-06-28 01:15:34,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:34,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:15:34,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:34,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:15:34,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:15:34,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:15:34,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 247 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 01:15:34,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:34,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:15:34,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:35,040 INFO L124 PetriNetUnfolderBase]: 476/924 cut-off events. [2024-06-28 01:15:35,040 INFO L125 PetriNetUnfolderBase]: For 1537/1543 co-relation queries the response was YES. [2024-06-28 01:15:35,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2651 conditions, 924 events. 476/924 cut-off events. For 1537/1543 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4930 event pairs, 140 based on Foata normal form. 5/895 useless extension candidates. Maximal degree in co-relation 2626. Up to 745 conditions per place. [2024-06-28 01:15:35,046 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 48 selfloop transitions, 13 changer transitions 0/69 dead transitions. [2024-06-28 01:15:35,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 69 transitions, 423 flow [2024-06-28 01:15:35,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:15:35,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:15:35,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-28 01:15:35,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49099099099099097 [2024-06-28 01:15:35,047 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 247 flow. Second operand 6 states and 109 transitions. [2024-06-28 01:15:35,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 69 transitions, 423 flow [2024-06-28 01:15:35,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 69 transitions, 404 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 01:15:35,050 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 275 flow [2024-06-28 01:15:35,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2024-06-28 01:15:35,050 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-06-28 01:15:35,051 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 275 flow [2024-06-28 01:15:35,051 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 01:15:35,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:35,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:35,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:15:35,051 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:35,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:35,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1896009936, now seen corresponding path program 1 times [2024-06-28 01:15:35,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:35,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706279668] [2024-06-28 01:15:35,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:35,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:35,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:35,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:35,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706279668] [2024-06-28 01:15:35,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706279668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:35,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:35,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:15:35,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159722480] [2024-06-28 01:15:35,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:35,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:15:35,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:35,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:15:35,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:15:35,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:15:35,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 275 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 01:15:35,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:35,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:15:35,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:35,879 INFO L124 PetriNetUnfolderBase]: 525/1025 cut-off events. [2024-06-28 01:15:35,879 INFO L125 PetriNetUnfolderBase]: For 2113/2113 co-relation queries the response was YES. [2024-06-28 01:15:35,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3092 conditions, 1025 events. 525/1025 cut-off events. For 2113/2113 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5547 event pairs, 146 based on Foata normal form. 2/991 useless extension candidates. Maximal degree in co-relation 3066. Up to 800 conditions per place. [2024-06-28 01:15:35,885 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 62 selfloop transitions, 23 changer transitions 0/93 dead transitions. [2024-06-28 01:15:35,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 93 transitions, 598 flow [2024-06-28 01:15:35,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:15:35,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:15:35,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 01:15:35,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-28 01:15:35,886 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 275 flow. Second operand 8 states and 146 transitions. [2024-06-28 01:15:35,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 93 transitions, 598 flow [2024-06-28 01:15:35,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 93 transitions, 561 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:15:35,892 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 420 flow [2024-06-28 01:15:35,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=420, PETRI_PLACES=68, PETRI_TRANSITIONS=70} [2024-06-28 01:15:35,893 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 27 predicate places. [2024-06-28 01:15:35,893 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 420 flow [2024-06-28 01:15:35,893 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 01:15:35,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:35,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:35,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:15:35,894 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:35,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:35,894 INFO L85 PathProgramCache]: Analyzing trace with hash 319815226, now seen corresponding path program 2 times [2024-06-28 01:15:35,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:35,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189774908] [2024-06-28 01:15:35,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:35,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:36,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:36,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:36,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189774908] [2024-06-28 01:15:36,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189774908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:36,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:36,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:15:36,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669921621] [2024-06-28 01:15:36,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:36,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:15:36,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:36,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:15:36,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:15:36,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:15:36,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 70 transitions, 420 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 01:15:36,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:36,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:15:36,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:36,964 INFO L124 PetriNetUnfolderBase]: 547/1067 cut-off events. [2024-06-28 01:15:36,964 INFO L125 PetriNetUnfolderBase]: For 2857/2857 co-relation queries the response was YES. [2024-06-28 01:15:36,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3512 conditions, 1067 events. 547/1067 cut-off events. For 2857/2857 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5833 event pairs, 146 based on Foata normal form. 2/1032 useless extension candidates. Maximal degree in co-relation 3483. Up to 810 conditions per place. [2024-06-28 01:15:36,970 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 64 selfloop transitions, 24 changer transitions 0/96 dead transitions. [2024-06-28 01:15:36,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 96 transitions, 692 flow [2024-06-28 01:15:36,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:15:36,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:15:36,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 01:15:36,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980694980694981 [2024-06-28 01:15:36,972 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 420 flow. Second operand 7 states and 129 transitions. [2024-06-28 01:15:36,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 96 transitions, 692 flow [2024-06-28 01:15:36,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 96 transitions, 666 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-28 01:15:36,977 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 471 flow [2024-06-28 01:15:36,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=471, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2024-06-28 01:15:36,977 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 32 predicate places. [2024-06-28 01:15:36,977 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 471 flow [2024-06-28 01:15:36,978 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 01:15:36,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:36,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:36,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:15:36,978 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:36,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:36,979 INFO L85 PathProgramCache]: Analyzing trace with hash 319966134, now seen corresponding path program 1 times [2024-06-28 01:15:36,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:36,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530505617] [2024-06-28 01:15:36,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:36,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:37,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:37,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:37,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530505617] [2024-06-28 01:15:37,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530505617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:37,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:37,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:15:37,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22182631] [2024-06-28 01:15:37,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:37,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:15:37,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:37,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:15:37,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:15:37,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:15:37,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 471 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 01:15:37,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:37,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:15:37,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:38,203 INFO L124 PetriNetUnfolderBase]: 558/1080 cut-off events. [2024-06-28 01:15:38,203 INFO L125 PetriNetUnfolderBase]: For 3398/3398 co-relation queries the response was YES. [2024-06-28 01:15:38,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3759 conditions, 1080 events. 558/1080 cut-off events. For 3398/3398 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5889 event pairs, 144 based on Foata normal form. 1/1045 useless extension candidates. Maximal degree in co-relation 3728. Up to 873 conditions per place. [2024-06-28 01:15:38,210 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 74 selfloop transitions, 15 changer transitions 0/97 dead transitions. [2024-06-28 01:15:38,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 97 transitions, 739 flow [2024-06-28 01:15:38,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:15:38,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:15:38,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-28 01:15:38,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 01:15:38,212 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 471 flow. Second operand 7 states and 126 transitions. [2024-06-28 01:15:38,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 97 transitions, 739 flow [2024-06-28 01:15:38,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 97 transitions, 691 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:15:38,218 INFO L231 Difference]: Finished difference. Result has 76 places, 74 transitions, 472 flow [2024-06-28 01:15:38,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=472, PETRI_PLACES=76, PETRI_TRANSITIONS=74} [2024-06-28 01:15:38,219 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 35 predicate places. [2024-06-28 01:15:38,219 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 74 transitions, 472 flow [2024-06-28 01:15:38,219 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 01:15:38,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:38,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:38,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:15:38,220 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:38,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:38,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1316929662, now seen corresponding path program 3 times [2024-06-28 01:15:38,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:38,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407227983] [2024-06-28 01:15:38,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:38,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:38,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:38,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:38,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407227983] [2024-06-28 01:15:38,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407227983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:38,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:38,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:15:38,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041907775] [2024-06-28 01:15:38,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:38,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:15:38,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:38,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:15:38,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:15:38,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:15:38,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 74 transitions, 472 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 01:15:38,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:38,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:15:38,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:39,222 INFO L124 PetriNetUnfolderBase]: 580/1129 cut-off events. [2024-06-28 01:15:39,222 INFO L125 PetriNetUnfolderBase]: For 3395/3395 co-relation queries the response was YES. [2024-06-28 01:15:39,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3871 conditions, 1129 events. 580/1129 cut-off events. For 3395/3395 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6238 event pairs, 148 based on Foata normal form. 2/1091 useless extension candidates. Maximal degree in co-relation 3839. Up to 826 conditions per place. [2024-06-28 01:15:39,228 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 65 selfloop transitions, 26 changer transitions 0/99 dead transitions. [2024-06-28 01:15:39,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 99 transitions, 746 flow [2024-06-28 01:15:39,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:15:39,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:15:39,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 01:15:39,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019305019305019 [2024-06-28 01:15:39,230 INFO L175 Difference]: Start difference. First operand has 76 places, 74 transitions, 472 flow. Second operand 7 states and 130 transitions. [2024-06-28 01:15:39,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 99 transitions, 746 flow [2024-06-28 01:15:39,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 99 transitions, 713 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 01:15:39,234 INFO L231 Difference]: Finished difference. Result has 78 places, 76 transitions, 516 flow [2024-06-28 01:15:39,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=516, PETRI_PLACES=78, PETRI_TRANSITIONS=76} [2024-06-28 01:15:39,235 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 37 predicate places. [2024-06-28 01:15:39,235 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 76 transitions, 516 flow [2024-06-28 01:15:39,235 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 01:15:39,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:39,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:39,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:15:39,236 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:39,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:39,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1191991112, now seen corresponding path program 4 times [2024-06-28 01:15:39,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:39,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455341677] [2024-06-28 01:15:39,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:39,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:39,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:39,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:39,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455341677] [2024-06-28 01:15:39,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455341677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:39,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:39,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:15:39,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770350304] [2024-06-28 01:15:39,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:39,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:15:39,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:39,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:15:39,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:15:39,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:15:39,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 76 transitions, 516 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 01:15:39,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:39,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:15:39,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:40,150 INFO L124 PetriNetUnfolderBase]: 592/1166 cut-off events. [2024-06-28 01:15:40,150 INFO L125 PetriNetUnfolderBase]: For 4245/4251 co-relation queries the response was YES. [2024-06-28 01:15:40,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4148 conditions, 1166 events. 592/1166 cut-off events. For 4245/4251 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6483 event pairs, 143 based on Foata normal form. 3/1121 useless extension candidates. Maximal degree in co-relation 4115. Up to 803 conditions per place. [2024-06-28 01:15:40,159 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 63 selfloop transitions, 30 changer transitions 0/101 dead transitions. [2024-06-28 01:15:40,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 101 transitions, 802 flow [2024-06-28 01:15:40,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:15:40,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:15:40,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 01:15:40,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019305019305019 [2024-06-28 01:15:40,161 INFO L175 Difference]: Start difference. First operand has 78 places, 76 transitions, 516 flow. Second operand 7 states and 130 transitions. [2024-06-28 01:15:40,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 101 transitions, 802 flow [2024-06-28 01:15:40,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 101 transitions, 741 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:15:40,166 INFO L231 Difference]: Finished difference. Result has 80 places, 78 transitions, 544 flow [2024-06-28 01:15:40,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=544, PETRI_PLACES=80, PETRI_TRANSITIONS=78} [2024-06-28 01:15:40,167 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 39 predicate places. [2024-06-28 01:15:40,167 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 544 flow [2024-06-28 01:15:40,167 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 01:15:40,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:40,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:40,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:15:40,168 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:40,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:40,168 INFO L85 PathProgramCache]: Analyzing trace with hash 527542134, now seen corresponding path program 2 times [2024-06-28 01:15:40,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:40,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557653018] [2024-06-28 01:15:40,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:40,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:40,965 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 01:15:40,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:40,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557653018] [2024-06-28 01:15:40,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557653018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:40,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:40,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:15:40,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580907422] [2024-06-28 01:15:40,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:40,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:15:40,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:40,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:15:40,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:15:41,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:15:41,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 544 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 01:15:41,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:41,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:15:41,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:41,364 INFO L124 PetriNetUnfolderBase]: 603/1198 cut-off events. [2024-06-28 01:15:41,364 INFO L125 PetriNetUnfolderBase]: For 4693/4699 co-relation queries the response was YES. [2024-06-28 01:15:41,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4324 conditions, 1198 events. 603/1198 cut-off events. For 4693/4699 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6724 event pairs, 140 based on Foata normal form. 5/1152 useless extension candidates. Maximal degree in co-relation 4290. Up to 923 conditions per place. [2024-06-28 01:15:41,373 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 77 selfloop transitions, 18 changer transitions 0/103 dead transitions. [2024-06-28 01:15:41,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 103 transitions, 832 flow [2024-06-28 01:15:41,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:15:41,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:15:41,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-28 01:15:41,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 01:15:41,375 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 544 flow. Second operand 7 states and 126 transitions. [2024-06-28 01:15:41,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 103 transitions, 832 flow [2024-06-28 01:15:41,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 103 transitions, 759 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 01:15:41,383 INFO L231 Difference]: Finished difference. Result has 82 places, 80 transitions, 530 flow [2024-06-28 01:15:41,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=530, PETRI_PLACES=82, PETRI_TRANSITIONS=80} [2024-06-28 01:15:41,384 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 41 predicate places. [2024-06-28 01:15:41,384 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 80 transitions, 530 flow [2024-06-28 01:15:41,384 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 01:15:41,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:41,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:41,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:15:41,385 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:41,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:41,385 INFO L85 PathProgramCache]: Analyzing trace with hash 527838804, now seen corresponding path program 3 times [2024-06-28 01:15:41,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:41,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65619160] [2024-06-28 01:15:41,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:41,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:42,107 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 01:15:42,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:42,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65619160] [2024-06-28 01:15:42,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65619160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:42,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:42,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:15:42,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329617450] [2024-06-28 01:15:42,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:42,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:15:42,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:42,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:15:42,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:15:42,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:15:42,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 80 transitions, 530 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 01:15:42,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:42,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:15:42,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:42,410 INFO L124 PetriNetUnfolderBase]: 604/1198 cut-off events. [2024-06-28 01:15:42,410 INFO L125 PetriNetUnfolderBase]: For 4817/4823 co-relation queries the response was YES. [2024-06-28 01:15:42,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4297 conditions, 1198 events. 604/1198 cut-off events. For 4817/4823 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6749 event pairs, 140 based on Foata normal form. 5/1154 useless extension candidates. Maximal degree in co-relation 4262. Up to 892 conditions per place. [2024-06-28 01:15:42,416 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 76 selfloop transitions, 23 changer transitions 0/107 dead transitions. [2024-06-28 01:15:42,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 107 transitions, 840 flow [2024-06-28 01:15:42,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:15:42,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:15:42,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 01:15:42,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49034749034749037 [2024-06-28 01:15:42,418 INFO L175 Difference]: Start difference. First operand has 82 places, 80 transitions, 530 flow. Second operand 7 states and 127 transitions. [2024-06-28 01:15:42,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 107 transitions, 840 flow [2024-06-28 01:15:42,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 107 transitions, 797 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 01:15:42,423 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 581 flow [2024-06-28 01:15:42,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=581, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2024-06-28 01:15:42,424 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 44 predicate places. [2024-06-28 01:15:42,424 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 581 flow [2024-06-28 01:15:42,424 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 01:15:42,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:42,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:42,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:15:42,425 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:42,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:42,425 INFO L85 PathProgramCache]: Analyzing trace with hash 608356995, now seen corresponding path program 1 times [2024-06-28 01:15:42,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:42,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248012453] [2024-06-28 01:15:42,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:42,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:43,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:43,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:43,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248012453] [2024-06-28 01:15:43,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248012453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:43,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:43,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:15:43,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040649476] [2024-06-28 01:15:43,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:43,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:15:43,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:43,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:15:43,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:15:43,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:15:43,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 581 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 01:15:43,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:43,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:15:43,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:43,630 INFO L124 PetriNetUnfolderBase]: 605/1166 cut-off events. [2024-06-28 01:15:43,631 INFO L125 PetriNetUnfolderBase]: For 5421/5421 co-relation queries the response was YES. [2024-06-28 01:15:43,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4424 conditions, 1166 events. 605/1166 cut-off events. For 5421/5421 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6543 event pairs, 154 based on Foata normal form. 1/1130 useless extension candidates. Maximal degree in co-relation 4387. Up to 913 conditions per place. [2024-06-28 01:15:43,639 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 85 selfloop transitions, 25 changer transitions 0/118 dead transitions. [2024-06-28 01:15:43,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 118 transitions, 937 flow [2024-06-28 01:15:43,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:15:43,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:15:43,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 01:15:43,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-06-28 01:15:43,641 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 581 flow. Second operand 8 states and 147 transitions. [2024-06-28 01:15:43,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 118 transitions, 937 flow [2024-06-28 01:15:43,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 118 transitions, 904 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 01:15:43,651 INFO L231 Difference]: Finished difference. Result has 91 places, 89 transitions, 661 flow [2024-06-28 01:15:43,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=661, PETRI_PLACES=91, PETRI_TRANSITIONS=89} [2024-06-28 01:15:43,652 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 50 predicate places. [2024-06-28 01:15:43,652 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 89 transitions, 661 flow [2024-06-28 01:15:43,652 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 01:15:43,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:43,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:43,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:15:43,653 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:43,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:43,653 INFO L85 PathProgramCache]: Analyzing trace with hash -2129522264, now seen corresponding path program 1 times [2024-06-28 01:15:43,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:43,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104068986] [2024-06-28 01:15:43,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:43,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:44,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:44,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:44,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104068986] [2024-06-28 01:15:44,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104068986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:44,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:44,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:15:44,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768123266] [2024-06-28 01:15:44,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:44,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:15:44,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:44,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:15:44,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:15:44,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:15:44,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 89 transitions, 661 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 01:15:44,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:44,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:15:44,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:44,767 INFO L124 PetriNetUnfolderBase]: 627/1202 cut-off events. [2024-06-28 01:15:44,767 INFO L125 PetriNetUnfolderBase]: For 6436/6436 co-relation queries the response was YES. [2024-06-28 01:15:44,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4776 conditions, 1202 events. 627/1202 cut-off events. For 6436/6436 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6785 event pairs, 152 based on Foata normal form. 2/1166 useless extension candidates. Maximal degree in co-relation 4736. Up to 901 conditions per place. [2024-06-28 01:15:44,775 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 86 selfloop transitions, 27 changer transitions 0/121 dead transitions. [2024-06-28 01:15:44,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 121 transitions, 1013 flow [2024-06-28 01:15:44,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:15:44,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:15:44,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 01:15:44,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-06-28 01:15:44,776 INFO L175 Difference]: Start difference. First operand has 91 places, 89 transitions, 661 flow. Second operand 8 states and 147 transitions. [2024-06-28 01:15:44,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 121 transitions, 1013 flow [2024-06-28 01:15:44,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 121 transitions, 946 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 01:15:44,784 INFO L231 Difference]: Finished difference. Result has 94 places, 92 transitions, 685 flow [2024-06-28 01:15:44,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=685, PETRI_PLACES=94, PETRI_TRANSITIONS=92} [2024-06-28 01:15:44,785 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 53 predicate places. [2024-06-28 01:15:44,785 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 92 transitions, 685 flow [2024-06-28 01:15:44,785 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 01:15:44,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:44,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:44,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:15:44,786 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:44,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:44,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1329016948, now seen corresponding path program 2 times [2024-06-28 01:15:44,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:44,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269238494] [2024-06-28 01:15:44,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:44,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:45,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:45,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:45,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269238494] [2024-06-28 01:15:45,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269238494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:45,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:45,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:15:45,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699714807] [2024-06-28 01:15:45,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:45,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:15:45,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:45,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:15:45,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:15:45,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:15:45,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 92 transitions, 685 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 01:15:45,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:45,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:15:45,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:45,947 INFO L124 PetriNetUnfolderBase]: 664/1264 cut-off events. [2024-06-28 01:15:45,947 INFO L125 PetriNetUnfolderBase]: For 7640/7640 co-relation queries the response was YES. [2024-06-28 01:15:45,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5267 conditions, 1264 events. 664/1264 cut-off events. For 7640/7640 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7163 event pairs, 151 based on Foata normal form. 1/1224 useless extension candidates. Maximal degree in co-relation 5226. Up to 877 conditions per place. [2024-06-28 01:15:45,954 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 82 selfloop transitions, 35 changer transitions 0/125 dead transitions. [2024-06-28 01:15:45,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 125 transitions, 1097 flow [2024-06-28 01:15:45,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:15:45,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:15:45,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 01:15:45,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033783783783784 [2024-06-28 01:15:45,956 INFO L175 Difference]: Start difference. First operand has 94 places, 92 transitions, 685 flow. Second operand 8 states and 149 transitions. [2024-06-28 01:15:45,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 125 transitions, 1097 flow [2024-06-28 01:15:45,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 125 transitions, 1030 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 01:15:45,965 INFO L231 Difference]: Finished difference. Result has 97 places, 97 transitions, 759 flow [2024-06-28 01:15:45,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=759, PETRI_PLACES=97, PETRI_TRANSITIONS=97} [2024-06-28 01:15:45,965 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 56 predicate places. [2024-06-28 01:15:45,966 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 97 transitions, 759 flow [2024-06-28 01:15:45,966 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 01:15:45,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:45,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:45,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:15:45,966 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:45,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:45,967 INFO L85 PathProgramCache]: Analyzing trace with hash -2124844085, now seen corresponding path program 1 times [2024-06-28 01:15:45,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:45,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518340396] [2024-06-28 01:15:45,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:45,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:46,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:46,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:46,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518340396] [2024-06-28 01:15:46,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518340396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:46,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:46,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:15:46,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746391607] [2024-06-28 01:15:46,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:46,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:15:46,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:46,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:15:46,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:15:46,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:15:46,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 97 transitions, 759 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 01:15:46,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:46,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:15:46,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:47,125 INFO L124 PetriNetUnfolderBase]: 675/1285 cut-off events. [2024-06-28 01:15:47,126 INFO L125 PetriNetUnfolderBase]: For 9057/9057 co-relation queries the response was YES. [2024-06-28 01:15:47,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5661 conditions, 1285 events. 675/1285 cut-off events. For 9057/9057 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7299 event pairs, 154 based on Foata normal form. 1/1246 useless extension candidates. Maximal degree in co-relation 5618. Up to 1044 conditions per place. [2024-06-28 01:15:47,133 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 102 selfloop transitions, 17 changer transitions 0/127 dead transitions. [2024-06-28 01:15:47,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 127 transitions, 1117 flow [2024-06-28 01:15:47,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:15:47,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:15:47,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 01:15:47,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-06-28 01:15:47,135 INFO L175 Difference]: Start difference. First operand has 97 places, 97 transitions, 759 flow. Second operand 8 states and 143 transitions. [2024-06-28 01:15:47,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 127 transitions, 1117 flow [2024-06-28 01:15:47,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 127 transitions, 1071 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 01:15:47,147 INFO L231 Difference]: Finished difference. Result has 101 places, 99 transitions, 772 flow [2024-06-28 01:15:47,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=772, PETRI_PLACES=101, PETRI_TRANSITIONS=99} [2024-06-28 01:15:47,147 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 60 predicate places. [2024-06-28 01:15:47,147 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 99 transitions, 772 flow [2024-06-28 01:15:47,147 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 01:15:47,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:47,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:47,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:15:47,148 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:47,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:47,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1329009508, now seen corresponding path program 3 times [2024-06-28 01:15:47,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:47,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493522146] [2024-06-28 01:15:47,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:47,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:47,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:47,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:47,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493522146] [2024-06-28 01:15:47,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493522146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:47,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:47,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:15:47,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073965232] [2024-06-28 01:15:47,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:47,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:15:47,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:47,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:15:47,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:15:47,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:15:47,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 99 transitions, 772 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 01:15:47,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:47,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:15:47,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:48,276 INFO L124 PetriNetUnfolderBase]: 671/1270 cut-off events. [2024-06-28 01:15:48,276 INFO L125 PetriNetUnfolderBase]: For 9123/9123 co-relation queries the response was YES. [2024-06-28 01:15:48,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5700 conditions, 1270 events. 671/1270 cut-off events. For 9123/9123 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7169 event pairs, 153 based on Foata normal form. 2/1234 useless extension candidates. Maximal degree in co-relation 5655. Up to 946 conditions per place. [2024-06-28 01:15:48,284 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 90 selfloop transitions, 29 changer transitions 0/127 dead transitions. [2024-06-28 01:15:48,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 127 transitions, 1122 flow [2024-06-28 01:15:48,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:15:48,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:15:48,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 01:15:48,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:15:48,285 INFO L175 Difference]: Start difference. First operand has 101 places, 99 transitions, 772 flow. Second operand 8 states and 148 transitions. [2024-06-28 01:15:48,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 127 transitions, 1122 flow [2024-06-28 01:15:48,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 127 transitions, 1067 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 01:15:48,298 INFO L231 Difference]: Finished difference. Result has 103 places, 99 transitions, 781 flow [2024-06-28 01:15:48,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=781, PETRI_PLACES=103, PETRI_TRANSITIONS=99} [2024-06-28 01:15:48,299 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 62 predicate places. [2024-06-28 01:15:48,299 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 99 transitions, 781 flow [2024-06-28 01:15:48,299 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 01:15:48,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:48,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:48,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:15:48,299 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:48,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:48,300 INFO L85 PathProgramCache]: Analyzing trace with hash -826061365, now seen corresponding path program 2 times [2024-06-28 01:15:48,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:48,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227034624] [2024-06-28 01:15:48,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:48,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:49,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:49,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:49,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227034624] [2024-06-28 01:15:49,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227034624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:49,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:49,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:15:49,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529067337] [2024-06-28 01:15:49,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:49,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:15:49,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:49,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:15:49,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:15:49,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:15:49,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 99 transitions, 781 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 01:15:49,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:49,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:15:49,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:49,593 INFO L124 PetriNetUnfolderBase]: 682/1297 cut-off events. [2024-06-28 01:15:49,593 INFO L125 PetriNetUnfolderBase]: For 9599/9605 co-relation queries the response was YES. [2024-06-28 01:15:49,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5852 conditions, 1297 events. 682/1297 cut-off events. For 9599/9605 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7345 event pairs, 142 based on Foata normal form. 5/1256 useless extension candidates. Maximal degree in co-relation 5806. Up to 1035 conditions per place. [2024-06-28 01:15:49,600 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 101 selfloop transitions, 20 changer transitions 0/129 dead transitions. [2024-06-28 01:15:49,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 129 transitions, 1153 flow [2024-06-28 01:15:49,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:15:49,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:15:49,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 01:15:49,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-06-28 01:15:49,602 INFO L175 Difference]: Start difference. First operand has 103 places, 99 transitions, 781 flow. Second operand 8 states and 143 transitions. [2024-06-28 01:15:49,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 129 transitions, 1153 flow [2024-06-28 01:15:49,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 129 transitions, 1077 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 01:15:49,612 INFO L231 Difference]: Finished difference. Result has 104 places, 101 transitions, 774 flow [2024-06-28 01:15:49,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=774, PETRI_PLACES=104, PETRI_TRANSITIONS=101} [2024-06-28 01:15:49,613 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 63 predicate places. [2024-06-28 01:15:49,613 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 101 transitions, 774 flow [2024-06-28 01:15:49,613 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 01:15:49,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:49,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:49,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:15:49,614 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:49,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:49,614 INFO L85 PathProgramCache]: Analyzing trace with hash -826061644, now seen corresponding path program 4 times [2024-06-28 01:15:49,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:49,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496893827] [2024-06-28 01:15:49,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:49,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:50,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:50,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:50,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496893827] [2024-06-28 01:15:50,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496893827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:50,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:50,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:15:50,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73167859] [2024-06-28 01:15:50,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:50,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:15:50,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:50,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:15:50,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:15:50,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:15:50,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 101 transitions, 774 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 01:15:50,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:50,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:15:50,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:50,839 INFO L124 PetriNetUnfolderBase]: 719/1341 cut-off events. [2024-06-28 01:15:50,839 INFO L125 PetriNetUnfolderBase]: For 10865/10871 co-relation queries the response was YES. [2024-06-28 01:15:50,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6190 conditions, 1341 events. 719/1341 cut-off events. For 10865/10871 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7546 event pairs, 141 based on Foata normal form. 2/1299 useless extension candidates. Maximal degree in co-relation 6143. Up to 954 conditions per place. [2024-06-28 01:15:50,846 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 91 selfloop transitions, 36 changer transitions 0/135 dead transitions. [2024-06-28 01:15:50,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 135 transitions, 1248 flow [2024-06-28 01:15:50,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:15:50,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:15:50,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 01:15:50,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5101351351351351 [2024-06-28 01:15:50,861 INFO L175 Difference]: Start difference. First operand has 104 places, 101 transitions, 774 flow. Second operand 8 states and 151 transitions. [2024-06-28 01:15:50,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 135 transitions, 1248 flow [2024-06-28 01:15:50,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 135 transitions, 1195 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 01:15:50,873 INFO L231 Difference]: Finished difference. Result has 107 places, 106 transitions, 873 flow [2024-06-28 01:15:50,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=873, PETRI_PLACES=107, PETRI_TRANSITIONS=106} [2024-06-28 01:15:50,873 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 66 predicate places. [2024-06-28 01:15:50,874 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 106 transitions, 873 flow [2024-06-28 01:15:50,874 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 01:15:50,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:50,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:50,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:15:50,874 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:50,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:50,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1951468184, now seen corresponding path program 5 times [2024-06-28 01:15:50,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:50,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89393744] [2024-06-28 01:15:50,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:50,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:51,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:51,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:51,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89393744] [2024-06-28 01:15:51,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89393744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:51,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:51,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:15:51,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127425363] [2024-06-28 01:15:51,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:51,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:15:51,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:51,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:15:51,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:15:51,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:15:51,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 106 transitions, 873 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 01:15:51,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:51,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:15:51,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:52,186 INFO L124 PetriNetUnfolderBase]: 715/1341 cut-off events. [2024-06-28 01:15:52,187 INFO L125 PetriNetUnfolderBase]: For 12375/12381 co-relation queries the response was YES. [2024-06-28 01:15:52,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6454 conditions, 1341 events. 715/1341 cut-off events. For 12375/12381 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7559 event pairs, 143 based on Foata normal form. 3/1298 useless extension candidates. Maximal degree in co-relation 6405. Up to 972 conditions per place. [2024-06-28 01:15:52,215 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 93 selfloop transitions, 33 changer transitions 0/134 dead transitions. [2024-06-28 01:15:52,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 134 transitions, 1251 flow [2024-06-28 01:15:52,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:15:52,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:15:52,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 01:15:52,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:15:52,229 INFO L175 Difference]: Start difference. First operand has 107 places, 106 transitions, 873 flow. Second operand 8 states and 148 transitions. [2024-06-28 01:15:52,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 134 transitions, 1251 flow [2024-06-28 01:15:52,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 134 transitions, 1168 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 01:15:52,259 INFO L231 Difference]: Finished difference. Result has 111 places, 106 transitions, 862 flow [2024-06-28 01:15:52,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=862, PETRI_PLACES=111, PETRI_TRANSITIONS=106} [2024-06-28 01:15:52,260 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 70 predicate places. [2024-06-28 01:15:52,260 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 106 transitions, 862 flow [2024-06-28 01:15:52,260 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 01:15:52,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:52,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:52,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:15:52,260 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:52,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:52,261 INFO L85 PathProgramCache]: Analyzing trace with hash -816864595, now seen corresponding path program 3 times [2024-06-28 01:15:52,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:52,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521620920] [2024-06-28 01:15:52,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:52,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:53,062 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 01:15:53,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:53,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521620920] [2024-06-28 01:15:53,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521620920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:53,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:53,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:15:53,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649694154] [2024-06-28 01:15:53,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:53,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:15:53,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:53,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:15:53,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:15:53,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:15:53,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 106 transitions, 862 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 01:15:53,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:53,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:15:53,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:53,429 INFO L124 PetriNetUnfolderBase]: 729/1426 cut-off events. [2024-06-28 01:15:53,429 INFO L125 PetriNetUnfolderBase]: For 12731/12737 co-relation queries the response was YES. [2024-06-28 01:15:53,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6687 conditions, 1426 events. 729/1426 cut-off events. For 12731/12737 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8284 event pairs, 143 based on Foata normal form. 5/1371 useless extension candidates. Maximal degree in co-relation 6636. Up to 1030 conditions per place. [2024-06-28 01:15:53,439 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 103 selfloop transitions, 30 changer transitions 0/141 dead transitions. [2024-06-28 01:15:53,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 141 transitions, 1344 flow [2024-06-28 01:15:53,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:15:53,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:15:53,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 01:15:53,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-06-28 01:15:53,453 INFO L175 Difference]: Start difference. First operand has 111 places, 106 transitions, 862 flow. Second operand 8 states and 147 transitions. [2024-06-28 01:15:53,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 141 transitions, 1344 flow [2024-06-28 01:15:53,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 141 transitions, 1271 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 01:15:53,468 INFO L231 Difference]: Finished difference. Result has 113 places, 112 transitions, 932 flow [2024-06-28 01:15:53,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=932, PETRI_PLACES=113, PETRI_TRANSITIONS=112} [2024-06-28 01:15:53,469 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 72 predicate places. [2024-06-28 01:15:53,469 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 112 transitions, 932 flow [2024-06-28 01:15:53,469 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 01:15:53,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:53,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:53,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:15:53,470 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:53,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:53,470 INFO L85 PathProgramCache]: Analyzing trace with hash -816864874, now seen corresponding path program 6 times [2024-06-28 01:15:53,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:53,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936889048] [2024-06-28 01:15:53,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:53,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:54,211 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 01:15:54,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:54,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936889048] [2024-06-28 01:15:54,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936889048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:54,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:54,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:15:54,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114012720] [2024-06-28 01:15:54,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:54,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:15:54,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:54,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:15:54,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:15:54,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:15:54,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 112 transitions, 932 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 01:15:54,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:54,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:15:54,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:54,604 INFO L124 PetriNetUnfolderBase]: 730/1388 cut-off events. [2024-06-28 01:15:54,604 INFO L125 PetriNetUnfolderBase]: For 13289/13295 co-relation queries the response was YES. [2024-06-28 01:15:54,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6747 conditions, 1388 events. 730/1388 cut-off events. For 13289/13295 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7848 event pairs, 143 based on Foata normal form. 2/1340 useless extension candidates. Maximal degree in co-relation 6694. Up to 863 conditions per place. [2024-06-28 01:15:54,613 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 84 selfloop transitions, 49 changer transitions 0/141 dead transitions. [2024-06-28 01:15:54,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 141 transitions, 1338 flow [2024-06-28 01:15:54,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:15:54,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:15:54,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 01:15:54,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033783783783784 [2024-06-28 01:15:54,641 INFO L175 Difference]: Start difference. First operand has 113 places, 112 transitions, 932 flow. Second operand 8 states and 149 transitions. [2024-06-28 01:15:54,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 141 transitions, 1338 flow [2024-06-28 01:15:54,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 141 transitions, 1297 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 01:15:54,658 INFO L231 Difference]: Finished difference. Result has 118 places, 114 transitions, 1026 flow [2024-06-28 01:15:54,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=891, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1026, PETRI_PLACES=118, PETRI_TRANSITIONS=114} [2024-06-28 01:15:54,659 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 77 predicate places. [2024-06-28 01:15:54,659 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 114 transitions, 1026 flow [2024-06-28 01:15:54,660 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 01:15:54,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:54,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:54,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:15:54,660 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:54,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:54,661 INFO L85 PathProgramCache]: Analyzing trace with hash -816538165, now seen corresponding path program 4 times [2024-06-28 01:15:54,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:54,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661873365] [2024-06-28 01:15:54,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:54,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:55,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:55,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:55,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661873365] [2024-06-28 01:15:55,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661873365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:55,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:55,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:15:55,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028327008] [2024-06-28 01:15:55,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:55,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:15:55,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:55,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:15:55,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:15:55,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:15:55,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 114 transitions, 1026 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 01:15:55,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:55,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:15:55,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:56,049 INFO L124 PetriNetUnfolderBase]: 728/1441 cut-off events. [2024-06-28 01:15:56,049 INFO L125 PetriNetUnfolderBase]: For 14174/14174 co-relation queries the response was YES. [2024-06-28 01:15:56,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7088 conditions, 1441 events. 728/1441 cut-off events. For 14174/14174 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8472 event pairs, 162 based on Foata normal form. 1/1380 useless extension candidates. Maximal degree in co-relation 7033. Up to 1137 conditions per place. [2024-06-28 01:15:56,059 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 119 selfloop transitions, 13 changer transitions 0/140 dead transitions. [2024-06-28 01:15:56,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 140 transitions, 1388 flow [2024-06-28 01:15:56,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:15:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:15:56,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 01:15:56,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2024-06-28 01:15:56,061 INFO L175 Difference]: Start difference. First operand has 118 places, 114 transitions, 1026 flow. Second operand 8 states and 141 transitions. [2024-06-28 01:15:56,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 140 transitions, 1388 flow [2024-06-28 01:15:56,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 140 transitions, 1251 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 01:15:56,122 INFO L231 Difference]: Finished difference. Result has 120 places, 114 transitions, 920 flow [2024-06-28 01:15:56,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=920, PETRI_PLACES=120, PETRI_TRANSITIONS=114} [2024-06-28 01:15:56,123 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 79 predicate places. [2024-06-28 01:15:56,123 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 114 transitions, 920 flow [2024-06-28 01:15:56,123 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 01:15:56,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:56,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:56,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:15:56,123 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:56,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:56,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1712525649, now seen corresponding path program 1 times [2024-06-28 01:15:56,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:56,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974551943] [2024-06-28 01:15:56,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:56,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:57,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:57,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:57,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974551943] [2024-06-28 01:15:57,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974551943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:57,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:57,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:15:57,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106450392] [2024-06-28 01:15:57,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:57,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:15:57,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:57,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:15:57,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:15:57,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 01:15:57,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 114 transitions, 920 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 01:15:57,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:57,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 01:15:57,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:57,854 INFO L124 PetriNetUnfolderBase]: 675/1343 cut-off events. [2024-06-28 01:15:57,855 INFO L125 PetriNetUnfolderBase]: For 13307/13327 co-relation queries the response was YES. [2024-06-28 01:15:57,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6275 conditions, 1343 events. 675/1343 cut-off events. For 13307/13327 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7930 event pairs, 151 based on Foata normal form. 22/1313 useless extension candidates. Maximal degree in co-relation 6219. Up to 990 conditions per place. [2024-06-28 01:15:57,862 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 112 selfloop transitions, 14 changer transitions 0/147 dead transitions. [2024-06-28 01:15:57,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 147 transitions, 1300 flow [2024-06-28 01:15:57,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:15:57,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:15:57,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 01:15:57,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984984984984985 [2024-06-28 01:15:57,864 INFO L175 Difference]: Start difference. First operand has 120 places, 114 transitions, 920 flow. Second operand 9 states and 166 transitions. [2024-06-28 01:15:57,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 147 transitions, 1300 flow [2024-06-28 01:15:57,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 147 transitions, 1235 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 01:15:57,881 INFO L231 Difference]: Finished difference. Result has 121 places, 115 transitions, 897 flow [2024-06-28 01:15:57,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=897, PETRI_PLACES=121, PETRI_TRANSITIONS=115} [2024-06-28 01:15:57,881 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 80 predicate places. [2024-06-28 01:15:57,882 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 115 transitions, 897 flow [2024-06-28 01:15:57,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 01:15:57,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:57,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:57,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:15:57,882 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:57,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:57,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1895340545, now seen corresponding path program 1 times [2024-06-28 01:15:57,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:57,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032047719] [2024-06-28 01:15:57,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:57,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:58,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:58,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:58,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032047719] [2024-06-28 01:15:58,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032047719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:58,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:58,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:15:58,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835270255] [2024-06-28 01:15:58,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:58,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:15:58,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:58,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:15:58,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:15:58,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:15:58,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 115 transitions, 897 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 01:15:58,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:58,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:15:58,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:59,287 INFO L124 PetriNetUnfolderBase]: 743/1432 cut-off events. [2024-06-28 01:15:59,287 INFO L125 PetriNetUnfolderBase]: For 14453/14453 co-relation queries the response was YES. [2024-06-28 01:15:59,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6841 conditions, 1432 events. 743/1432 cut-off events. For 14453/14453 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8476 event pairs, 168 based on Foata normal form. 1/1384 useless extension candidates. Maximal degree in co-relation 6785. Up to 1096 conditions per place. [2024-06-28 01:15:59,297 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 119 selfloop transitions, 30 changer transitions 0/157 dead transitions. [2024-06-28 01:15:59,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 157 transitions, 1387 flow [2024-06-28 01:15:59,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:15:59,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:15:59,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 01:15:59,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-06-28 01:15:59,298 INFO L175 Difference]: Start difference. First operand has 121 places, 115 transitions, 897 flow. Second operand 9 states and 168 transitions. [2024-06-28 01:15:59,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 157 transitions, 1387 flow [2024-06-28 01:15:59,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 157 transitions, 1339 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 01:15:59,346 INFO L231 Difference]: Finished difference. Result has 123 places, 119 transitions, 995 flow [2024-06-28 01:15:59,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=995, PETRI_PLACES=123, PETRI_TRANSITIONS=119} [2024-06-28 01:15:59,348 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 82 predicate places. [2024-06-28 01:15:59,348 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 119 transitions, 995 flow [2024-06-28 01:15:59,348 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 01:15:59,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:59,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:59,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:15:59,349 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:59,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:59,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1885024143, now seen corresponding path program 2 times [2024-06-28 01:15:59,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:59,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345322084] [2024-06-28 01:15:59,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:59,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:00,264 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 01:16:00,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:00,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345322084] [2024-06-28 01:16:00,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345322084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:00,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:00,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:00,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27404566] [2024-06-28 01:16:00,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:00,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:00,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:00,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:00,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:00,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:00,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 119 transitions, 995 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 01:16:00,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:00,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:00,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:00,822 INFO L124 PetriNetUnfolderBase]: 754/1441 cut-off events. [2024-06-28 01:16:00,822 INFO L125 PetriNetUnfolderBase]: For 15939/15939 co-relation queries the response was YES. [2024-06-28 01:16:00,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7066 conditions, 1441 events. 754/1441 cut-off events. For 15939/15939 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8483 event pairs, 176 based on Foata normal form. 1/1397 useless extension candidates. Maximal degree in co-relation 7009. Up to 1089 conditions per place. [2024-06-28 01:16:00,831 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 118 selfloop transitions, 29 changer transitions 0/155 dead transitions. [2024-06-28 01:16:00,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 155 transitions, 1461 flow [2024-06-28 01:16:00,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:00,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:00,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 01:16:00,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2024-06-28 01:16:00,832 INFO L175 Difference]: Start difference. First operand has 123 places, 119 transitions, 995 flow. Second operand 9 states and 164 transitions. [2024-06-28 01:16:00,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 155 transitions, 1461 flow [2024-06-28 01:16:00,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 155 transitions, 1371 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-28 01:16:00,854 INFO L231 Difference]: Finished difference. Result has 127 places, 121 transitions, 1010 flow [2024-06-28 01:16:00,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1010, PETRI_PLACES=127, PETRI_TRANSITIONS=121} [2024-06-28 01:16:00,854 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 86 predicate places. [2024-06-28 01:16:00,854 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 121 transitions, 1010 flow [2024-06-28 01:16:00,855 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 01:16:00,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:00,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:00,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:16:00,855 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:00,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:00,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1895160807, now seen corresponding path program 1 times [2024-06-28 01:16:00,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:00,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004187442] [2024-06-28 01:16:00,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:00,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:00,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:01,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:01,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:01,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004187442] [2024-06-28 01:16:01,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004187442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:01,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:01,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:01,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860436741] [2024-06-28 01:16:01,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:01,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:01,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:01,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:01,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:01,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:01,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 121 transitions, 1010 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 01:16:01,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:01,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:01,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:02,138 INFO L124 PetriNetUnfolderBase]: 776/1471 cut-off events. [2024-06-28 01:16:02,139 INFO L125 PetriNetUnfolderBase]: For 17601/17601 co-relation queries the response was YES. [2024-06-28 01:16:02,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7360 conditions, 1471 events. 776/1471 cut-off events. For 17601/17601 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8638 event pairs, 174 based on Foata normal form. 2/1429 useless extension candidates. Maximal degree in co-relation 7301. Up to 1112 conditions per place. [2024-06-28 01:16:02,148 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 120 selfloop transitions, 30 changer transitions 0/158 dead transitions. [2024-06-28 01:16:02,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 158 transitions, 1490 flow [2024-06-28 01:16:02,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:02,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:02,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 01:16:02,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-28 01:16:02,149 INFO L175 Difference]: Start difference. First operand has 127 places, 121 transitions, 1010 flow. Second operand 9 states and 165 transitions. [2024-06-28 01:16:02,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 158 transitions, 1490 flow [2024-06-28 01:16:02,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 158 transitions, 1401 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 01:16:02,171 INFO L231 Difference]: Finished difference. Result has 129 places, 124 transitions, 1039 flow [2024-06-28 01:16:02,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1039, PETRI_PLACES=129, PETRI_TRANSITIONS=124} [2024-06-28 01:16:02,172 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 88 predicate places. [2024-06-28 01:16:02,172 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 124 transitions, 1039 flow [2024-06-28 01:16:02,172 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 01:16:02,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:02,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:02,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:16:02,173 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:02,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:02,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1750376547, now seen corresponding path program 2 times [2024-06-28 01:16:02,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:02,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826236560] [2024-06-28 01:16:02,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:02,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:02,906 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 01:16:02,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:02,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826236560] [2024-06-28 01:16:02,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826236560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:02,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:02,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:02,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621180696] [2024-06-28 01:16:02,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:02,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:02,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:02,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:02,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:02,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:02,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 124 transitions, 1039 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 01:16:02,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:02,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:02,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:03,366 INFO L124 PetriNetUnfolderBase]: 820/1537 cut-off events. [2024-06-28 01:16:03,367 INFO L125 PetriNetUnfolderBase]: For 20368/20368 co-relation queries the response was YES. [2024-06-28 01:16:03,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7892 conditions, 1537 events. 820/1537 cut-off events. For 20368/20368 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9002 event pairs, 175 based on Foata normal form. 4/1497 useless extension candidates. Maximal degree in co-relation 7832. Up to 1135 conditions per place. [2024-06-28 01:16:03,378 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 121 selfloop transitions, 32 changer transitions 0/161 dead transitions. [2024-06-28 01:16:03,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 161 transitions, 1549 flow [2024-06-28 01:16:03,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:03,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:03,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 01:16:03,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-06-28 01:16:03,380 INFO L175 Difference]: Start difference. First operand has 129 places, 124 transitions, 1039 flow. Second operand 9 states and 167 transitions. [2024-06-28 01:16:03,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 161 transitions, 1549 flow [2024-06-28 01:16:03,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 161 transitions, 1453 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 01:16:03,405 INFO L231 Difference]: Finished difference. Result has 131 places, 127 transitions, 1065 flow [2024-06-28 01:16:03,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=943, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1065, PETRI_PLACES=131, PETRI_TRANSITIONS=127} [2024-06-28 01:16:03,406 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 90 predicate places. [2024-06-28 01:16:03,407 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 127 transitions, 1065 flow [2024-06-28 01:16:03,407 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 01:16:03,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:03,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:03,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:16:03,407 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:03,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:03,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1750376795, now seen corresponding path program 3 times [2024-06-28 01:16:03,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:03,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858232936] [2024-06-28 01:16:03,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:03,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:04,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:04,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:04,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858232936] [2024-06-28 01:16:04,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858232936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:04,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:04,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:04,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403906913] [2024-06-28 01:16:04,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:04,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:04,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:04,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:04,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:04,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:04,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 127 transitions, 1065 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 01:16:04,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:04,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:04,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:04,939 INFO L124 PetriNetUnfolderBase]: 831/1568 cut-off events. [2024-06-28 01:16:04,940 INFO L125 PetriNetUnfolderBase]: For 21067/21067 co-relation queries the response was YES. [2024-06-28 01:16:04,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8166 conditions, 1568 events. 831/1568 cut-off events. For 21067/21067 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9288 event pairs, 179 based on Foata normal form. 1/1523 useless extension candidates. Maximal degree in co-relation 8105. Up to 1185 conditions per place. [2024-06-28 01:16:04,950 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 123 selfloop transitions, 31 changer transitions 0/162 dead transitions. [2024-06-28 01:16:04,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 162 transitions, 1571 flow [2024-06-28 01:16:04,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:04,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:04,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 01:16:04,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-28 01:16:04,964 INFO L175 Difference]: Start difference. First operand has 131 places, 127 transitions, 1065 flow. Second operand 9 states and 165 transitions. [2024-06-28 01:16:04,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 162 transitions, 1571 flow [2024-06-28 01:16:05,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 162 transitions, 1475 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 01:16:05,004 INFO L231 Difference]: Finished difference. Result has 133 places, 129 transitions, 1086 flow [2024-06-28 01:16:05,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1086, PETRI_PLACES=133, PETRI_TRANSITIONS=129} [2024-06-28 01:16:05,004 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 92 predicate places. [2024-06-28 01:16:05,004 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 129 transitions, 1086 flow [2024-06-28 01:16:05,005 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 01:16:05,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:05,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:05,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:16:05,005 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:05,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:05,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1750137227, now seen corresponding path program 1 times [2024-06-28 01:16:05,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:05,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743261468] [2024-06-28 01:16:05,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:05,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:05,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:05,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:05,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743261468] [2024-06-28 01:16:05,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743261468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:05,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:05,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:05,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948172248] [2024-06-28 01:16:05,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:05,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:05,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:05,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:05,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:05,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:05,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 129 transitions, 1086 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 01:16:05,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:05,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:05,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:06,289 INFO L124 PetriNetUnfolderBase]: 842/1596 cut-off events. [2024-06-28 01:16:06,290 INFO L125 PetriNetUnfolderBase]: For 21505/21505 co-relation queries the response was YES. [2024-06-28 01:16:06,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8155 conditions, 1596 events. 842/1596 cut-off events. For 21505/21505 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9526 event pairs, 184 based on Foata normal form. 1/1548 useless extension candidates. Maximal degree in co-relation 8093. Up to 1294 conditions per place. [2024-06-28 01:16:06,299 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 133 selfloop transitions, 18 changer transitions 0/159 dead transitions. [2024-06-28 01:16:06,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 159 transitions, 1518 flow [2024-06-28 01:16:06,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:16:06,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:16:06,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 01:16:06,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 01:16:06,307 INFO L175 Difference]: Start difference. First operand has 133 places, 129 transitions, 1086 flow. Second operand 8 states and 144 transitions. [2024-06-28 01:16:06,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 159 transitions, 1518 flow [2024-06-28 01:16:06,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 159 transitions, 1417 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 01:16:06,334 INFO L231 Difference]: Finished difference. Result has 134 places, 131 transitions, 1057 flow [2024-06-28 01:16:06,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1057, PETRI_PLACES=134, PETRI_TRANSITIONS=131} [2024-06-28 01:16:06,334 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 93 predicate places. [2024-06-28 01:16:06,335 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 131 transitions, 1057 flow [2024-06-28 01:16:06,335 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 01:16:06,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:06,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:06,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:16:06,335 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:06,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:06,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1445655809, now seen corresponding path program 3 times [2024-06-28 01:16:06,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:06,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522605382] [2024-06-28 01:16:06,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:06,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:07,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:07,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:07,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522605382] [2024-06-28 01:16:07,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522605382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:07,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:07,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:07,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154696496] [2024-06-28 01:16:07,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:07,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:07,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:07,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:07,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:07,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:07,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 131 transitions, 1057 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 01:16:07,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:07,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:07,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:07,684 INFO L124 PetriNetUnfolderBase]: 866/1624 cut-off events. [2024-06-28 01:16:07,684 INFO L125 PetriNetUnfolderBase]: For 22427/22427 co-relation queries the response was YES. [2024-06-28 01:16:07,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8338 conditions, 1624 events. 866/1624 cut-off events. For 22427/22427 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9648 event pairs, 166 based on Foata normal form. 1/1576 useless extension candidates. Maximal degree in co-relation 8275. Up to 1116 conditions per place. [2024-06-28 01:16:07,694 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 117 selfloop transitions, 45 changer transitions 0/170 dead transitions. [2024-06-28 01:16:07,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 170 transitions, 1651 flow [2024-06-28 01:16:07,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:07,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:07,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 01:16:07,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-06-28 01:16:07,695 INFO L175 Difference]: Start difference. First operand has 134 places, 131 transitions, 1057 flow. Second operand 9 states and 168 transitions. [2024-06-28 01:16:07,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 170 transitions, 1651 flow [2024-06-28 01:16:07,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 170 transitions, 1601 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 01:16:07,726 INFO L231 Difference]: Finished difference. Result has 138 places, 137 transitions, 1197 flow [2024-06-28 01:16:07,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1197, PETRI_PLACES=138, PETRI_TRANSITIONS=137} [2024-06-28 01:16:07,726 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 97 predicate places. [2024-06-28 01:16:07,726 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 137 transitions, 1197 flow [2024-06-28 01:16:07,726 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 01:16:07,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:07,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:07,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:16:07,727 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:07,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:07,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1445664179, now seen corresponding path program 4 times [2024-06-28 01:16:07,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:07,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125505047] [2024-06-28 01:16:07,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:07,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:08,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:08,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:08,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125505047] [2024-06-28 01:16:08,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125505047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:08,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:08,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:08,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511020915] [2024-06-28 01:16:08,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:08,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:08,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:08,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:08,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:08,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:08,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 137 transitions, 1197 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 01:16:08,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:08,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:08,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:09,077 INFO L124 PetriNetUnfolderBase]: 864/1633 cut-off events. [2024-06-28 01:16:09,077 INFO L125 PetriNetUnfolderBase]: For 24007/24007 co-relation queries the response was YES. [2024-06-28 01:16:09,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8705 conditions, 1633 events. 864/1633 cut-off events. For 24007/24007 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9771 event pairs, 170 based on Foata normal form. 1/1581 useless extension candidates. Maximal degree in co-relation 8640. Up to 1114 conditions per place. [2024-06-28 01:16:09,088 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 118 selfloop transitions, 44 changer transitions 0/170 dead transitions. [2024-06-28 01:16:09,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 170 transitions, 1670 flow [2024-06-28 01:16:09,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:09,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:09,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 01:16:09,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-06-28 01:16:09,093 INFO L175 Difference]: Start difference. First operand has 138 places, 137 transitions, 1197 flow. Second operand 9 states and 167 transitions. [2024-06-28 01:16:09,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 170 transitions, 1670 flow [2024-06-28 01:16:09,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 170 transitions, 1581 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 01:16:09,131 INFO L231 Difference]: Finished difference. Result has 142 places, 138 transitions, 1214 flow [2024-06-28 01:16:09,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1110, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1214, PETRI_PLACES=142, PETRI_TRANSITIONS=138} [2024-06-28 01:16:09,132 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 101 predicate places. [2024-06-28 01:16:09,132 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 138 transitions, 1214 flow [2024-06-28 01:16:09,132 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 01:16:09,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:09,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:09,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:16:09,133 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:09,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:09,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1445664427, now seen corresponding path program 4 times [2024-06-28 01:16:09,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:09,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65993360] [2024-06-28 01:16:09,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:09,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:10,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:10,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:10,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65993360] [2024-06-28 01:16:10,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65993360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:10,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:10,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:10,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112468999] [2024-06-28 01:16:10,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:10,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:10,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:10,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:10,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:10,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:10,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 138 transitions, 1214 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 01:16:10,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:10,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:10,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:10,672 INFO L124 PetriNetUnfolderBase]: 875/1657 cut-off events. [2024-06-28 01:16:10,672 INFO L125 PetriNetUnfolderBase]: For 25274/25274 co-relation queries the response was YES. [2024-06-28 01:16:10,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8960 conditions, 1657 events. 875/1657 cut-off events. For 25274/25274 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9966 event pairs, 177 based on Foata normal form. 1/1606 useless extension candidates. Maximal degree in co-relation 8893. Up to 1175 conditions per place. [2024-06-28 01:16:10,683 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 125 selfloop transitions, 39 changer transitions 0/172 dead transitions. [2024-06-28 01:16:10,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 172 transitions, 1728 flow [2024-06-28 01:16:10,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:10,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:10,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 01:16:10,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-28 01:16:10,686 INFO L175 Difference]: Start difference. First operand has 142 places, 138 transitions, 1214 flow. Second operand 9 states and 165 transitions. [2024-06-28 01:16:10,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 172 transitions, 1728 flow [2024-06-28 01:16:10,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 172 transitions, 1650 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:16:10,721 INFO L231 Difference]: Finished difference. Result has 145 places, 140 transitions, 1273 flow [2024-06-28 01:16:10,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1273, PETRI_PLACES=145, PETRI_TRANSITIONS=140} [2024-06-28 01:16:10,722 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 104 predicate places. [2024-06-28 01:16:10,722 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 140 transitions, 1273 flow [2024-06-28 01:16:10,722 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 01:16:10,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:10,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:10,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:16:10,722 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:10,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:10,723 INFO L85 PathProgramCache]: Analyzing trace with hash 457478547, now seen corresponding path program 2 times [2024-06-28 01:16:10,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:10,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735639110] [2024-06-28 01:16:10,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:10,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:12,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:12,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:12,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735639110] [2024-06-28 01:16:12,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735639110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:12,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:12,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:12,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866500851] [2024-06-28 01:16:12,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:12,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:12,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:12,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:12,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:12,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:12,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 140 transitions, 1273 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 01:16:12,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:12,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:12,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:12,902 INFO L124 PetriNetUnfolderBase]: 899/1765 cut-off events. [2024-06-28 01:16:12,902 INFO L125 PetriNetUnfolderBase]: For 28348/28348 co-relation queries the response was YES. [2024-06-28 01:16:12,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9408 conditions, 1765 events. 899/1765 cut-off events. For 28348/28348 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10816 event pairs, 185 based on Foata normal form. 1/1694 useless extension candidates. Maximal degree in co-relation 9340. Up to 1369 conditions per place. [2024-06-28 01:16:12,914 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 154 selfloop transitions, 19 changer transitions 0/181 dead transitions. [2024-06-28 01:16:12,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 181 transitions, 1889 flow [2024-06-28 01:16:12,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:16:12,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:16:12,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-28 01:16:12,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2024-06-28 01:16:12,916 INFO L175 Difference]: Start difference. First operand has 145 places, 140 transitions, 1273 flow. Second operand 10 states and 177 transitions. [2024-06-28 01:16:12,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 181 transitions, 1889 flow [2024-06-28 01:16:12,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 181 transitions, 1768 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 01:16:12,957 INFO L231 Difference]: Finished difference. Result has 148 places, 144 transitions, 1259 flow [2024-06-28 01:16:12,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1259, PETRI_PLACES=148, PETRI_TRANSITIONS=144} [2024-06-28 01:16:12,958 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 107 predicate places. [2024-06-28 01:16:12,958 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 144 transitions, 1259 flow [2024-06-28 01:16:12,958 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 01:16:12,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:12,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:12,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:16:12,959 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:12,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:12,959 INFO L85 PathProgramCache]: Analyzing trace with hash -2123314401, now seen corresponding path program 5 times [2024-06-28 01:16:12,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:12,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593943034] [2024-06-28 01:16:12,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:12,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:13,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:13,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:13,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593943034] [2024-06-28 01:16:13,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593943034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:13,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:13,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:13,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352303066] [2024-06-28 01:16:13,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:13,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:13,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:13,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:13,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:13,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:13,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 144 transitions, 1259 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 01:16:13,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:13,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:13,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:14,424 INFO L124 PetriNetUnfolderBase]: 922/1798 cut-off events. [2024-06-28 01:16:14,425 INFO L125 PetriNetUnfolderBase]: For 29400/29400 co-relation queries the response was YES. [2024-06-28 01:16:14,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9546 conditions, 1798 events. 922/1798 cut-off events. For 29400/29400 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 11042 event pairs, 185 based on Foata normal form. 2/1729 useless extension candidates. Maximal degree in co-relation 9477. Up to 1370 conditions per place. [2024-06-28 01:16:14,438 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 152 selfloop transitions, 19 changer transitions 0/179 dead transitions. [2024-06-28 01:16:14,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 179 transitions, 1839 flow [2024-06-28 01:16:14,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:14,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:14,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 01:16:14,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 01:16:14,439 INFO L175 Difference]: Start difference. First operand has 148 places, 144 transitions, 1259 flow. Second operand 9 states and 162 transitions. [2024-06-28 01:16:14,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 179 transitions, 1839 flow [2024-06-28 01:16:14,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 179 transitions, 1793 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 01:16:14,482 INFO L231 Difference]: Finished difference. Result has 151 places, 146 transitions, 1296 flow [2024-06-28 01:16:14,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1296, PETRI_PLACES=151, PETRI_TRANSITIONS=146} [2024-06-28 01:16:14,483 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 110 predicate places. [2024-06-28 01:16:14,483 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 146 transitions, 1296 flow [2024-06-28 01:16:14,483 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 01:16:14,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:14,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:14,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:16:14,484 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:14,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:14,484 INFO L85 PathProgramCache]: Analyzing trace with hash 161663589, now seen corresponding path program 5 times [2024-06-28 01:16:14,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:14,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832151614] [2024-06-28 01:16:14,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:14,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:15,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:15,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:15,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832151614] [2024-06-28 01:16:15,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832151614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:15,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:15,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:15,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117597415] [2024-06-28 01:16:15,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:15,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:15,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:15,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:15,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:15,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:15,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 146 transitions, 1296 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 01:16:15,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:15,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:15,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:16,000 INFO L124 PetriNetUnfolderBase]: 933/1747 cut-off events. [2024-06-28 01:16:16,000 INFO L125 PetriNetUnfolderBase]: For 31146/31152 co-relation queries the response was YES. [2024-06-28 01:16:16,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9806 conditions, 1747 events. 933/1747 cut-off events. For 31146/31152 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10547 event pairs, 164 based on Foata normal form. 2/1690 useless extension candidates. Maximal degree in co-relation 9735. Up to 1301 conditions per place. [2024-06-28 01:16:16,013 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 138 selfloop transitions, 35 changer transitions 0/181 dead transitions. [2024-06-28 01:16:16,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 181 transitions, 1866 flow [2024-06-28 01:16:16,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:16,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:16,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 01:16:16,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-28 01:16:16,022 INFO L175 Difference]: Start difference. First operand has 151 places, 146 transitions, 1296 flow. Second operand 9 states and 165 transitions. [2024-06-28 01:16:16,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 181 transitions, 1866 flow [2024-06-28 01:16:16,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 181 transitions, 1812 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 01:16:16,075 INFO L231 Difference]: Finished difference. Result has 154 places, 148 transitions, 1375 flow [2024-06-28 01:16:16,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1375, PETRI_PLACES=154, PETRI_TRANSITIONS=148} [2024-06-28 01:16:16,076 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 113 predicate places. [2024-06-28 01:16:16,076 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 148 transitions, 1375 flow [2024-06-28 01:16:16,076 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 01:16:16,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:16,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:16,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:16:16,076 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:16,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:16,076 INFO L85 PathProgramCache]: Analyzing trace with hash 446994099, now seen corresponding path program 6 times [2024-06-28 01:16:16,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:16,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160026997] [2024-06-28 01:16:16,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:16,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:16,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:16,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:16,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160026997] [2024-06-28 01:16:16,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160026997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:16,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:16,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:16,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252704962] [2024-06-28 01:16:16,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:16,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:16,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:16,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:16,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:17,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:17,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 148 transitions, 1375 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 01:16:17,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:17,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:17,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:17,549 INFO L124 PetriNetUnfolderBase]: 947/1799 cut-off events. [2024-06-28 01:16:17,549 INFO L125 PetriNetUnfolderBase]: For 33957/33963 co-relation queries the response was YES. [2024-06-28 01:16:17,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10155 conditions, 1799 events. 947/1799 cut-off events. For 33957/33963 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11089 event pairs, 161 based on Foata normal form. 2/1735 useless extension candidates. Maximal degree in co-relation 10083. Up to 1134 conditions per place. [2024-06-28 01:16:17,563 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 121 selfloop transitions, 56 changer transitions 0/185 dead transitions. [2024-06-28 01:16:17,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 185 transitions, 2067 flow [2024-06-28 01:16:17,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:17,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:17,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 01:16:17,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-06-28 01:16:17,564 INFO L175 Difference]: Start difference. First operand has 154 places, 148 transitions, 1375 flow. Second operand 9 states and 167 transitions. [2024-06-28 01:16:17,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 185 transitions, 2067 flow [2024-06-28 01:16:17,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 185 transitions, 1950 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 01:16:17,612 INFO L231 Difference]: Finished difference. Result has 156 places, 152 transitions, 1495 flow [2024-06-28 01:16:17,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1495, PETRI_PLACES=156, PETRI_TRANSITIONS=152} [2024-06-28 01:16:17,612 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 115 predicate places. [2024-06-28 01:16:17,613 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 152 transitions, 1495 flow [2024-06-28 01:16:17,613 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 01:16:17,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:17,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:17,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:16:17,613 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:17,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:17,614 INFO L85 PathProgramCache]: Analyzing trace with hash 161663837, now seen corresponding path program 6 times [2024-06-28 01:16:17,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:17,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785368599] [2024-06-28 01:16:17,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:17,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:18,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:18,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:18,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785368599] [2024-06-28 01:16:18,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785368599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:18,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:18,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:18,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055179971] [2024-06-28 01:16:18,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:18,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:18,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:18,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:18,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:18,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:18,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 152 transitions, 1495 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 01:16:18,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:18,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:18,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:19,015 INFO L124 PetriNetUnfolderBase]: 969/1817 cut-off events. [2024-06-28 01:16:19,015 INFO L125 PetriNetUnfolderBase]: For 36790/36796 co-relation queries the response was YES. [2024-06-28 01:16:19,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10533 conditions, 1817 events. 969/1817 cut-off events. For 36790/36796 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11082 event pairs, 166 based on Foata normal form. 3/1758 useless extension candidates. Maximal degree in co-relation 10460. Up to 1346 conditions per place. [2024-06-28 01:16:19,032 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 144 selfloop transitions, 36 changer transitions 0/188 dead transitions. [2024-06-28 01:16:19,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 188 transitions, 2097 flow [2024-06-28 01:16:19,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:19,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:19,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 01:16:19,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984984984984985 [2024-06-28 01:16:19,048 INFO L175 Difference]: Start difference. First operand has 156 places, 152 transitions, 1495 flow. Second operand 9 states and 166 transitions. [2024-06-28 01:16:19,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 188 transitions, 2097 flow [2024-06-28 01:16:19,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 188 transitions, 1994 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-28 01:16:19,130 INFO L231 Difference]: Finished difference. Result has 160 places, 155 transitions, 1548 flow [2024-06-28 01:16:19,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1548, PETRI_PLACES=160, PETRI_TRANSITIONS=155} [2024-06-28 01:16:19,133 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 119 predicate places. [2024-06-28 01:16:19,133 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 155 transitions, 1548 flow [2024-06-28 01:16:19,133 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 01:16:19,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:19,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:19,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:16:19,138 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:19,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:19,138 INFO L85 PathProgramCache]: Analyzing trace with hash 161894229, now seen corresponding path program 7 times [2024-06-28 01:16:19,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:19,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208353821] [2024-06-28 01:16:19,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:19,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:20,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:20,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:20,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208353821] [2024-06-28 01:16:20,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208353821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:20,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:20,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:20,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472570541] [2024-06-28 01:16:20,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:20,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:20,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:20,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:20,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:20,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:20,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 155 transitions, 1548 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 01:16:20,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:20,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:20,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:20,576 INFO L124 PetriNetUnfolderBase]: 967/1810 cut-off events. [2024-06-28 01:16:20,577 INFO L125 PetriNetUnfolderBase]: For 35374/35380 co-relation queries the response was YES. [2024-06-28 01:16:20,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10558 conditions, 1810 events. 967/1810 cut-off events. For 35374/35380 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11018 event pairs, 163 based on Foata normal form. 2/1752 useless extension candidates. Maximal degree in co-relation 10483. Up to 1321 conditions per place. [2024-06-28 01:16:20,592 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 141 selfloop transitions, 39 changer transitions 0/188 dead transitions. [2024-06-28 01:16:20,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 188 transitions, 2082 flow [2024-06-28 01:16:20,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:20,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:20,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 01:16:20,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-06-28 01:16:20,593 INFO L175 Difference]: Start difference. First operand has 160 places, 155 transitions, 1548 flow. Second operand 9 states and 167 transitions. [2024-06-28 01:16:20,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 188 transitions, 2082 flow [2024-06-28 01:16:20,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 188 transitions, 1930 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-28 01:16:20,661 INFO L231 Difference]: Finished difference. Result has 162 places, 155 transitions, 1479 flow [2024-06-28 01:16:20,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1479, PETRI_PLACES=162, PETRI_TRANSITIONS=155} [2024-06-28 01:16:20,662 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 121 predicate places. [2024-06-28 01:16:20,662 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 155 transitions, 1479 flow [2024-06-28 01:16:20,662 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 01:16:20,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:20,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:20,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:16:20,663 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:20,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:20,663 INFO L85 PathProgramCache]: Analyzing trace with hash 446994347, now seen corresponding path program 7 times [2024-06-28 01:16:20,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:20,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513121045] [2024-06-28 01:16:20,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:20,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:21,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:21,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513121045] [2024-06-28 01:16:21,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513121045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:21,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:21,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:21,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705977611] [2024-06-28 01:16:21,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:21,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:21,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:21,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:21,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:21,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:21,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 155 transitions, 1479 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 01:16:21,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:21,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:21,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:22,063 INFO L124 PetriNetUnfolderBase]: 994/1917 cut-off events. [2024-06-28 01:16:22,063 INFO L125 PetriNetUnfolderBase]: For 37076/37082 co-relation queries the response was YES. [2024-06-28 01:16:22,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10822 conditions, 1917 events. 994/1917 cut-off events. For 37076/37082 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 11922 event pairs, 159 based on Foata normal form. 2/1841 useless extension candidates. Maximal degree in co-relation 10746. Up to 1079 conditions per place. [2024-06-28 01:16:22,080 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 120 selfloop transitions, 68 changer transitions 0/196 dead transitions. [2024-06-28 01:16:22,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 196 transitions, 2301 flow [2024-06-28 01:16:22,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:22,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:22,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 01:16:22,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-28 01:16:22,081 INFO L175 Difference]: Start difference. First operand has 162 places, 155 transitions, 1479 flow. Second operand 9 states and 171 transitions. [2024-06-28 01:16:22,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 196 transitions, 2301 flow [2024-06-28 01:16:22,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 196 transitions, 2100 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-28 01:16:22,140 INFO L231 Difference]: Finished difference. Result has 161 places, 163 transitions, 1595 flow [2024-06-28 01:16:22,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1595, PETRI_PLACES=161, PETRI_TRANSITIONS=163} [2024-06-28 01:16:22,140 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 120 predicate places. [2024-06-28 01:16:22,141 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 163 transitions, 1595 flow [2024-06-28 01:16:22,143 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 01:16:22,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:22,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:22,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:16:22,145 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:22,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:22,145 INFO L85 PathProgramCache]: Analyzing trace with hash 447003027, now seen corresponding path program 3 times [2024-06-28 01:16:22,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:22,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497317363] [2024-06-28 01:16:22,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:22,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:23,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:23,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:23,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497317363] [2024-06-28 01:16:23,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497317363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:23,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:23,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:23,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177737201] [2024-06-28 01:16:23,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:23,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:23,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:23,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:23,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:23,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:23,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 163 transitions, 1595 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 01:16:23,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:23,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:23,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:23,830 INFO L124 PetriNetUnfolderBase]: 1005/1933 cut-off events. [2024-06-28 01:16:23,830 INFO L125 PetriNetUnfolderBase]: For 38789/38795 co-relation queries the response was YES. [2024-06-28 01:16:23,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10832 conditions, 1933 events. 1005/1933 cut-off events. For 38789/38795 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 11975 event pairs, 164 based on Foata normal form. 5/1864 useless extension candidates. Maximal degree in co-relation 10757. Up to 1450 conditions per place. [2024-06-28 01:16:23,846 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 158 selfloop transitions, 32 changer transitions 0/198 dead transitions. [2024-06-28 01:16:23,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 198 transitions, 2141 flow [2024-06-28 01:16:23,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:23,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:23,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 01:16:23,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-28 01:16:23,849 INFO L175 Difference]: Start difference. First operand has 161 places, 163 transitions, 1595 flow. Second operand 9 states and 163 transitions. [2024-06-28 01:16:23,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 198 transitions, 2141 flow [2024-06-28 01:16:23,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 198 transitions, 2036 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-28 01:16:23,918 INFO L231 Difference]: Finished difference. Result has 167 places, 165 transitions, 1599 flow [2024-06-28 01:16:23,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1490, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1599, PETRI_PLACES=167, PETRI_TRANSITIONS=165} [2024-06-28 01:16:23,919 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 126 predicate places. [2024-06-28 01:16:23,919 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 165 transitions, 1599 flow [2024-06-28 01:16:23,919 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 01:16:23,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:23,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:23,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:16:23,920 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:23,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:23,920 INFO L85 PathProgramCache]: Analyzing trace with hash 161894477, now seen corresponding path program 8 times [2024-06-28 01:16:23,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:23,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552890752] [2024-06-28 01:16:23,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:23,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:24,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:24,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:24,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552890752] [2024-06-28 01:16:24,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552890752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:24,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:24,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:24,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662031632] [2024-06-28 01:16:24,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:24,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:24,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:24,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:24,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:24,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:24,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 165 transitions, 1599 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 01:16:24,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:24,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:24,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:25,221 INFO L124 PetriNetUnfolderBase]: 1069/1962 cut-off events. [2024-06-28 01:16:25,222 INFO L125 PetriNetUnfolderBase]: For 43163/43169 co-relation queries the response was YES. [2024-06-28 01:16:25,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11567 conditions, 1962 events. 1069/1962 cut-off events. For 43163/43169 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12014 event pairs, 166 based on Foata normal form. 3/1906 useless extension candidates. Maximal degree in co-relation 11490. Up to 1378 conditions per place. [2024-06-28 01:16:25,239 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 154 selfloop transitions, 47 changer transitions 0/209 dead transitions. [2024-06-28 01:16:25,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 209 transitions, 2537 flow [2024-06-28 01:16:25,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:25,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:25,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 01:16:25,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225225225225225 [2024-06-28 01:16:25,240 INFO L175 Difference]: Start difference. First operand has 167 places, 165 transitions, 1599 flow. Second operand 9 states and 174 transitions. [2024-06-28 01:16:25,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 209 transitions, 2537 flow [2024-06-28 01:16:25,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 209 transitions, 2444 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 01:16:25,324 INFO L231 Difference]: Finished difference. Result has 170 places, 174 transitions, 1848 flow [2024-06-28 01:16:25,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1506, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1848, PETRI_PLACES=170, PETRI_TRANSITIONS=174} [2024-06-28 01:16:25,324 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 129 predicate places. [2024-06-28 01:16:25,324 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 174 transitions, 1848 flow [2024-06-28 01:16:25,324 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 01:16:25,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:25,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:25,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:16:25,324 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:25,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:25,325 INFO L85 PathProgramCache]: Analyzing trace with hash 161903157, now seen corresponding path program 4 times [2024-06-28 01:16:25,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:25,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824174384] [2024-06-28 01:16:25,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:25,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:26,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:26,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:26,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824174384] [2024-06-28 01:16:26,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824174384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:26,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:26,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:26,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478787571] [2024-06-28 01:16:26,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:26,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:26,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:26,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:26,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:26,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:26,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 174 transitions, 1848 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 01:16:26,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:26,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:26,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:26,840 INFO L124 PetriNetUnfolderBase]: 1067/1995 cut-off events. [2024-06-28 01:16:26,840 INFO L125 PetriNetUnfolderBase]: For 44408/44414 co-relation queries the response was YES. [2024-06-28 01:16:26,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11793 conditions, 1995 events. 1067/1995 cut-off events. For 44408/44414 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12419 event pairs, 179 based on Foata normal form. 5/1931 useless extension candidates. Maximal degree in co-relation 11714. Up to 1623 conditions per place. [2024-06-28 01:16:26,857 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 174 selfloop transitions, 21 changer transitions 0/203 dead transitions. [2024-06-28 01:16:26,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 203 transitions, 2365 flow [2024-06-28 01:16:26,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:16:26,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:16:26,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 01:16:26,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 01:16:26,858 INFO L175 Difference]: Start difference. First operand has 170 places, 174 transitions, 1848 flow. Second operand 8 states and 144 transitions. [2024-06-28 01:16:26,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 203 transitions, 2365 flow [2024-06-28 01:16:26,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 203 transitions, 2242 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-28 01:16:26,949 INFO L231 Difference]: Finished difference. Result has 174 places, 175 transitions, 1792 flow [2024-06-28 01:16:26,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1727, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1792, PETRI_PLACES=174, PETRI_TRANSITIONS=175} [2024-06-28 01:16:26,950 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 133 predicate places. [2024-06-28 01:16:26,950 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 175 transitions, 1792 flow [2024-06-28 01:16:26,950 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 01:16:26,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:26,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:26,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:16:26,953 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:26,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:26,953 INFO L85 PathProgramCache]: Analyzing trace with hash 447002717, now seen corresponding path program 9 times [2024-06-28 01:16:26,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:26,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898674432] [2024-06-28 01:16:26,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:26,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:27,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:27,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:27,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898674432] [2024-06-28 01:16:27,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898674432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:27,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:27,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:27,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336339807] [2024-06-28 01:16:27,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:27,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:27,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:27,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:27,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:27,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:27,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 175 transitions, 1792 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 01:16:27,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:27,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:27,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:28,314 INFO L124 PetriNetUnfolderBase]: 1065/1976 cut-off events. [2024-06-28 01:16:28,314 INFO L125 PetriNetUnfolderBase]: For 42392/42398 co-relation queries the response was YES. [2024-06-28 01:16:28,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11554 conditions, 1976 events. 1065/1976 cut-off events. For 42392/42398 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 11905 event pairs, 145 based on Foata normal form. 2/1917 useless extension candidates. Maximal degree in co-relation 11473. Up to 1185 conditions per place. [2024-06-28 01:16:28,329 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 131 selfloop transitions, 69 changer transitions 0/208 dead transitions. [2024-06-28 01:16:28,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 208 transitions, 2415 flow [2024-06-28 01:16:28,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:28,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:28,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 01:16:28,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-28 01:16:28,330 INFO L175 Difference]: Start difference. First operand has 174 places, 175 transitions, 1792 flow. Second operand 9 states and 171 transitions. [2024-06-28 01:16:28,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 208 transitions, 2415 flow [2024-06-28 01:16:28,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 208 transitions, 2317 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 01:16:28,421 INFO L231 Difference]: Finished difference. Result has 177 places, 176 transitions, 1850 flow [2024-06-28 01:16:28,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1850, PETRI_PLACES=177, PETRI_TRANSITIONS=176} [2024-06-28 01:16:28,421 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 136 predicate places. [2024-06-28 01:16:28,421 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 176 transitions, 1850 flow [2024-06-28 01:16:28,421 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 01:16:28,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:28,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:28,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:16:28,421 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:28,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:28,422 INFO L85 PathProgramCache]: Analyzing trace with hash 457122357, now seen corresponding path program 5 times [2024-06-28 01:16:28,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:28,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979939504] [2024-06-28 01:16:28,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:28,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:30,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:30,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:30,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979939504] [2024-06-28 01:16:30,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979939504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:30,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:30,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:30,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227673877] [2024-06-28 01:16:30,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:30,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:30,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:30,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:30,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:30,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:30,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 176 transitions, 1850 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 01:16:30,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:30,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:30,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:30,873 INFO L124 PetriNetUnfolderBase]: 1062/2044 cut-off events. [2024-06-28 01:16:30,873 INFO L125 PetriNetUnfolderBase]: For 43106/43106 co-relation queries the response was YES. [2024-06-28 01:16:30,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11733 conditions, 2044 events. 1062/2044 cut-off events. For 43106/43106 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12979 event pairs, 203 based on Foata normal form. 1/1966 useless extension candidates. Maximal degree in co-relation 11651. Up to 1645 conditions per place. [2024-06-28 01:16:30,893 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 184 selfloop transitions, 15 changer transitions 0/207 dead transitions. [2024-06-28 01:16:30,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 207 transitions, 2366 flow [2024-06-28 01:16:30,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:30,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:30,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 01:16:30,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-06-28 01:16:30,895 INFO L175 Difference]: Start difference. First operand has 177 places, 176 transitions, 1850 flow. Second operand 9 states and 158 transitions. [2024-06-28 01:16:30,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 207 transitions, 2366 flow [2024-06-28 01:16:30,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 207 transitions, 2209 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 01:16:30,975 INFO L231 Difference]: Finished difference. Result has 180 places, 176 transitions, 1728 flow [2024-06-28 01:16:30,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1693, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1728, PETRI_PLACES=180, PETRI_TRANSITIONS=176} [2024-06-28 01:16:30,976 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 139 predicate places. [2024-06-28 01:16:30,976 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 176 transitions, 1728 flow [2024-06-28 01:16:30,976 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 01:16:30,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:30,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:30,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:16:30,977 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:30,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:30,977 INFO L85 PathProgramCache]: Analyzing trace with hash 161902847, now seen corresponding path program 10 times [2024-06-28 01:16:30,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:30,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431342925] [2024-06-28 01:16:30,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:30,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:31,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:31,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:31,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431342925] [2024-06-28 01:16:31,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431342925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:31,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:31,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:31,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133451841] [2024-06-28 01:16:31,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:31,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:31,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:31,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:31,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:31,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:31,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 176 transitions, 1728 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 01:16:31,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:31,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:31,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:32,346 INFO L124 PetriNetUnfolderBase]: 1058/1945 cut-off events. [2024-06-28 01:16:32,346 INFO L125 PetriNetUnfolderBase]: For 41034/41040 co-relation queries the response was YES. [2024-06-28 01:16:32,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11128 conditions, 1945 events. 1058/1945 cut-off events. For 41034/41040 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11869 event pairs, 166 based on Foata normal form. 3/1889 useless extension candidates. Maximal degree in co-relation 11045. Up to 1366 conditions per place. [2024-06-28 01:16:32,362 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 153 selfloop transitions, 49 changer transitions 0/210 dead transitions. [2024-06-28 01:16:32,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 210 transitions, 2366 flow [2024-06-28 01:16:32,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:32,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:32,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 01:16:32,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5165165165165165 [2024-06-28 01:16:32,364 INFO L175 Difference]: Start difference. First operand has 180 places, 176 transitions, 1728 flow. Second operand 9 states and 172 transitions. [2024-06-28 01:16:32,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 210 transitions, 2366 flow [2024-06-28 01:16:32,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 210 transitions, 2292 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 01:16:32,466 INFO L231 Difference]: Finished difference. Result has 180 places, 176 transitions, 1759 flow [2024-06-28 01:16:32,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1654, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1759, PETRI_PLACES=180, PETRI_TRANSITIONS=176} [2024-06-28 01:16:32,467 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 139 predicate places. [2024-06-28 01:16:32,467 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 176 transitions, 1759 flow [2024-06-28 01:16:32,468 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 01:16:32,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:32,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:32,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:16:32,470 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:32,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:32,470 INFO L85 PathProgramCache]: Analyzing trace with hash 2098756271, now seen corresponding path program 1 times [2024-06-28 01:16:32,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:32,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83190762] [2024-06-28 01:16:32,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:32,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:32,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:32,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:32,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83190762] [2024-06-28 01:16:32,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83190762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:32,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:32,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:16:32,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431108419] [2024-06-28 01:16:32,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:32,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:16:32,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:32,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:16:32,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:16:32,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-28 01:16:32,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 176 transitions, 1759 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:32,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:32,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-28 01:16:32,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:32,743 INFO L124 PetriNetUnfolderBase]: 548/1125 cut-off events. [2024-06-28 01:16:32,743 INFO L125 PetriNetUnfolderBase]: For 30887/30920 co-relation queries the response was YES. [2024-06-28 01:16:32,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6774 conditions, 1125 events. 548/1125 cut-off events. For 30887/30920 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6444 event pairs, 118 based on Foata normal form. 74/1137 useless extension candidates. Maximal degree in co-relation 6691. Up to 341 conditions per place. [2024-06-28 01:16:32,752 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 86 selfloop transitions, 36 changer transitions 0/174 dead transitions. [2024-06-28 01:16:32,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 174 transitions, 2071 flow [2024-06-28 01:16:32,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:16:32,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:16:32,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-06-28 01:16:32,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6959459459459459 [2024-06-28 01:16:32,773 INFO L175 Difference]: Start difference. First operand has 180 places, 176 transitions, 1759 flow. Second operand 4 states and 103 transitions. [2024-06-28 01:16:32,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 174 transitions, 2071 flow [2024-06-28 01:16:32,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 174 transitions, 1909 flow, removed 14 selfloop flow, removed 18 redundant places. [2024-06-28 01:16:32,847 INFO L231 Difference]: Finished difference. Result has 167 places, 160 transitions, 1639 flow [2024-06-28 01:16:32,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1431, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1639, PETRI_PLACES=167, PETRI_TRANSITIONS=160} [2024-06-28 01:16:32,848 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 126 predicate places. [2024-06-28 01:16:32,848 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 160 transitions, 1639 flow [2024-06-28 01:16:32,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:32,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:32,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:32,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:16:32,849 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:32,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:32,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1251635858, now seen corresponding path program 1 times [2024-06-28 01:16:32,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:32,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521075288] [2024-06-28 01:16:32,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:32,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:33,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:33,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:33,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521075288] [2024-06-28 01:16:33,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521075288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:33,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:33,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:33,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121940144] [2024-06-28 01:16:33,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:33,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:33,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:33,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:33,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:33,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:33,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 160 transitions, 1639 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 01:16:33,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:33,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:33,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:34,097 INFO L124 PetriNetUnfolderBase]: 668/1248 cut-off events. [2024-06-28 01:16:34,098 INFO L125 PetriNetUnfolderBase]: For 37832/37832 co-relation queries the response was YES. [2024-06-28 01:16:34,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7669 conditions, 1248 events. 668/1248 cut-off events. For 37832/37832 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6490 event pairs, 116 based on Foata normal form. 2/1184 useless extension candidates. Maximal degree in co-relation 7591. Up to 1007 conditions per place. [2024-06-28 01:16:34,107 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 167 selfloop transitions, 23 changer transitions 0/199 dead transitions. [2024-06-28 01:16:34,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 199 transitions, 2172 flow [2024-06-28 01:16:34,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:16:34,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:16:34,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-28 01:16:34,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-28 01:16:34,117 INFO L175 Difference]: Start difference. First operand has 167 places, 160 transitions, 1639 flow. Second operand 10 states and 171 transitions. [2024-06-28 01:16:34,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 199 transitions, 2172 flow [2024-06-28 01:16:34,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 199 transitions, 2168 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 01:16:34,182 INFO L231 Difference]: Finished difference. Result has 178 places, 167 transitions, 1752 flow [2024-06-28 01:16:34,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1635, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1752, PETRI_PLACES=178, PETRI_TRANSITIONS=167} [2024-06-28 01:16:34,191 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 137 predicate places. [2024-06-28 01:16:34,191 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 167 transitions, 1752 flow [2024-06-28 01:16:34,196 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 01:16:34,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:34,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:34,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:16:34,197 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:34,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:34,197 INFO L85 PathProgramCache]: Analyzing trace with hash 2109270698, now seen corresponding path program 2 times [2024-06-28 01:16:34,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:34,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162208923] [2024-06-28 01:16:34,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:34,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:34,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:34,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:34,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162208923] [2024-06-28 01:16:34,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162208923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:34,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:34,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:34,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784712511] [2024-06-28 01:16:34,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:34,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:34,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:34,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:34,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:35,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:35,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 167 transitions, 1752 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 01:16:35,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:35,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:35,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:35,416 INFO L124 PetriNetUnfolderBase]: 685/1280 cut-off events. [2024-06-28 01:16:35,417 INFO L125 PetriNetUnfolderBase]: For 39701/39701 co-relation queries the response was YES. [2024-06-28 01:16:35,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8147 conditions, 1280 events. 685/1280 cut-off events. For 39701/39701 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6683 event pairs, 48 based on Foata normal form. 2/1216 useless extension candidates. Maximal degree in co-relation 8064. Up to 984 conditions per place. [2024-06-28 01:16:35,426 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 166 selfloop transitions, 24 changer transitions 0/199 dead transitions. [2024-06-28 01:16:35,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 199 transitions, 2272 flow [2024-06-28 01:16:35,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:35,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:35,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 01:16:35,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-28 01:16:35,427 INFO L175 Difference]: Start difference. First operand has 178 places, 167 transitions, 1752 flow. Second operand 9 states and 155 transitions. [2024-06-28 01:16:35,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 199 transitions, 2272 flow [2024-06-28 01:16:35,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 199 transitions, 2217 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 01:16:35,499 INFO L231 Difference]: Finished difference. Result has 182 places, 170 transitions, 1791 flow [2024-06-28 01:16:35,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1697, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1791, PETRI_PLACES=182, PETRI_TRANSITIONS=170} [2024-06-28 01:16:35,500 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 141 predicate places. [2024-06-28 01:16:35,500 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 170 transitions, 1791 flow [2024-06-28 01:16:35,500 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 01:16:35,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:35,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:35,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:16:35,501 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:35,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:35,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1263158442, now seen corresponding path program 3 times [2024-06-28 01:16:35,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:35,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044723279] [2024-06-28 01:16:35,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:35,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:36,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:36,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044723279] [2024-06-28 01:16:36,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044723279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:36,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:36,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:36,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326677018] [2024-06-28 01:16:36,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:36,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:36,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:36,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:36,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:36,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:36,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 170 transitions, 1791 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 01:16:36,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:36,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:36,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:36,814 INFO L124 PetriNetUnfolderBase]: 702/1320 cut-off events. [2024-06-28 01:16:36,815 INFO L125 PetriNetUnfolderBase]: For 41507/41507 co-relation queries the response was YES. [2024-06-28 01:16:36,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8419 conditions, 1320 events. 702/1320 cut-off events. For 41507/41507 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7025 event pairs, 130 based on Foata normal form. 2/1253 useless extension candidates. Maximal degree in co-relation 8334. Up to 1086 conditions per place. [2024-06-28 01:16:36,825 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 168 selfloop transitions, 21 changer transitions 0/198 dead transitions. [2024-06-28 01:16:36,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 198 transitions, 2295 flow [2024-06-28 01:16:36,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:36,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:36,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:16:36,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:16:36,826 INFO L175 Difference]: Start difference. First operand has 182 places, 170 transitions, 1791 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:16:36,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 198 transitions, 2295 flow [2024-06-28 01:16:36,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 198 transitions, 2231 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 01:16:36,945 INFO L231 Difference]: Finished difference. Result has 185 places, 171 transitions, 1797 flow [2024-06-28 01:16:36,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1731, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1797, PETRI_PLACES=185, PETRI_TRANSITIONS=171} [2024-06-28 01:16:36,945 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 144 predicate places. [2024-06-28 01:16:36,946 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 171 transitions, 1797 flow [2024-06-28 01:16:36,946 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 01:16:36,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:36,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:36,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:16:36,946 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:36,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:36,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1263164394, now seen corresponding path program 1 times [2024-06-28 01:16:36,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:36,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823979353] [2024-06-28 01:16:36,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:36,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:36,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:38,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:38,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:38,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823979353] [2024-06-28 01:16:38,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823979353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:38,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:38,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:16:38,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714258346] [2024-06-28 01:16:38,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:38,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:16:38,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:38,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:16:38,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:16:38,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:38,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 171 transitions, 1797 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 01:16:38,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:38,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:38,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:38,632 INFO L124 PetriNetUnfolderBase]: 715/1339 cut-off events. [2024-06-28 01:16:38,632 INFO L125 PetriNetUnfolderBase]: For 43075/43075 co-relation queries the response was YES. [2024-06-28 01:16:38,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8549 conditions, 1339 events. 715/1339 cut-off events. For 43075/43075 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7088 event pairs, 128 based on Foata normal form. 2/1268 useless extension candidates. Maximal degree in co-relation 8463. Up to 1111 conditions per place. [2024-06-28 01:16:38,643 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 166 selfloop transitions, 24 changer transitions 0/199 dead transitions. [2024-06-28 01:16:38,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 199 transitions, 2351 flow [2024-06-28 01:16:38,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:16:38,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:16:38,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:16:38,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:16:38,644 INFO L175 Difference]: Start difference. First operand has 185 places, 171 transitions, 1797 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:16:38,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 199 transitions, 2351 flow [2024-06-28 01:16:38,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 199 transitions, 2295 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 01:16:38,725 INFO L231 Difference]: Finished difference. Result has 188 places, 173 transitions, 1860 flow [2024-06-28 01:16:38,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1741, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1860, PETRI_PLACES=188, PETRI_TRANSITIONS=173} [2024-06-28 01:16:38,726 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 147 predicate places. [2024-06-28 01:16:38,726 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 173 transitions, 1860 flow [2024-06-28 01:16:38,726 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 01:16:38,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:38,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:38,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:16:38,727 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:38,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:38,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1379343342, now seen corresponding path program 4 times [2024-06-28 01:16:38,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:38,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239773662] [2024-06-28 01:16:38,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:38,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:39,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:39,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:39,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239773662] [2024-06-28 01:16:39,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239773662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:39,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:39,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:39,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243518661] [2024-06-28 01:16:39,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:39,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:39,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:39,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:39,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:39,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:39,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 173 transitions, 1860 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 01:16:39,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:39,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:39,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:40,037 INFO L124 PetriNetUnfolderBase]: 732/1379 cut-off events. [2024-06-28 01:16:40,037 INFO L125 PetriNetUnfolderBase]: For 44522/44522 co-relation queries the response was YES. [2024-06-28 01:16:40,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8710 conditions, 1379 events. 732/1379 cut-off events. For 44522/44522 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 7425 event pairs, 135 based on Foata normal form. 2/1306 useless extension candidates. Maximal degree in co-relation 8623. Up to 1139 conditions per place. [2024-06-28 01:16:40,050 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 171 selfloop transitions, 22 changer transitions 0/202 dead transitions. [2024-06-28 01:16:40,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 202 transitions, 2394 flow [2024-06-28 01:16:40,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:40,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:40,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 01:16:40,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-28 01:16:40,051 INFO L175 Difference]: Start difference. First operand has 188 places, 173 transitions, 1860 flow. Second operand 9 states and 150 transitions. [2024-06-28 01:16:40,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 202 transitions, 2394 flow [2024-06-28 01:16:40,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 202 transitions, 2303 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 01:16:40,148 INFO L231 Difference]: Finished difference. Result has 190 places, 177 transitions, 1878 flow [2024-06-28 01:16:40,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1769, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1878, PETRI_PLACES=190, PETRI_TRANSITIONS=177} [2024-06-28 01:16:40,149 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 149 predicate places. [2024-06-28 01:16:40,149 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 177 transitions, 1878 flow [2024-06-28 01:16:40,149 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 01:16:40,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:40,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:40,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:16:40,150 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:40,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:40,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1379551104, now seen corresponding path program 2 times [2024-06-28 01:16:40,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:40,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604318240] [2024-06-28 01:16:40,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:40,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:41,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:41,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604318240] [2024-06-28 01:16:41,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604318240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:41,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:41,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:16:41,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037993519] [2024-06-28 01:16:41,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:41,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:16:41,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:41,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:16:41,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:16:41,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:41,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 177 transitions, 1878 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 01:16:41,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:41,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:41,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:41,724 INFO L124 PetriNetUnfolderBase]: 746/1403 cut-off events. [2024-06-28 01:16:41,724 INFO L125 PetriNetUnfolderBase]: For 46455/46455 co-relation queries the response was YES. [2024-06-28 01:16:41,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8958 conditions, 1403 events. 746/1403 cut-off events. For 46455/46455 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7571 event pairs, 134 based on Foata normal form. 1/1326 useless extension candidates. Maximal degree in co-relation 8869. Up to 1143 conditions per place. [2024-06-28 01:16:41,736 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 165 selfloop transitions, 31 changer transitions 0/205 dead transitions. [2024-06-28 01:16:41,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 205 transitions, 2584 flow [2024-06-28 01:16:41,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:16:41,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:16:41,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:16:41,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-28 01:16:41,755 INFO L175 Difference]: Start difference. First operand has 190 places, 177 transitions, 1878 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:16:41,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 205 transitions, 2584 flow [2024-06-28 01:16:41,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 205 transitions, 2525 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 01:16:41,897 INFO L231 Difference]: Finished difference. Result has 194 places, 181 transitions, 2006 flow [2024-06-28 01:16:41,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1819, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2006, PETRI_PLACES=194, PETRI_TRANSITIONS=181} [2024-06-28 01:16:41,897 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 153 predicate places. [2024-06-28 01:16:41,897 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 181 transitions, 2006 flow [2024-06-28 01:16:41,897 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 01:16:41,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:41,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:41,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:16:41,898 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:41,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:41,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1379558544, now seen corresponding path program 3 times [2024-06-28 01:16:41,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:41,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607659263] [2024-06-28 01:16:41,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:41,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:42,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:42,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:42,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607659263] [2024-06-28 01:16:42,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607659263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:42,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:42,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:16:42,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114752874] [2024-06-28 01:16:42,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:42,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:16:42,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:42,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:16:42,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:16:43,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:43,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 181 transitions, 2006 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 01:16:43,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:43,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:43,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:43,534 INFO L124 PetriNetUnfolderBase]: 744/1400 cut-off events. [2024-06-28 01:16:43,535 INFO L125 PetriNetUnfolderBase]: For 46244/46244 co-relation queries the response was YES. [2024-06-28 01:16:43,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8840 conditions, 1400 events. 744/1400 cut-off events. For 46244/46244 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7575 event pairs, 134 based on Foata normal form. 1/1323 useless extension candidates. Maximal degree in co-relation 8750. Up to 1141 conditions per place. [2024-06-28 01:16:43,546 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 164 selfloop transitions, 31 changer transitions 0/204 dead transitions. [2024-06-28 01:16:43,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 204 transitions, 2488 flow [2024-06-28 01:16:43,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:16:43,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:16:43,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:16:43,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-28 01:16:43,547 INFO L175 Difference]: Start difference. First operand has 194 places, 181 transitions, 2006 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:16:43,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 204 transitions, 2488 flow [2024-06-28 01:16:43,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 204 transitions, 2356 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-28 01:16:43,645 INFO L231 Difference]: Finished difference. Result has 198 places, 181 transitions, 1941 flow [2024-06-28 01:16:43,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1874, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1941, PETRI_PLACES=198, PETRI_TRANSITIONS=181} [2024-06-28 01:16:43,645 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 157 predicate places. [2024-06-28 01:16:43,645 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 181 transitions, 1941 flow [2024-06-28 01:16:43,645 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 01:16:43,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:43,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:43,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:16:43,646 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:43,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:43,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1520536635, now seen corresponding path program 1 times [2024-06-28 01:16:43,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:43,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336046005] [2024-06-28 01:16:43,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:43,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:44,451 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 01:16:44,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:44,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336046005] [2024-06-28 01:16:44,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336046005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:44,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:44,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:16:44,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845655557] [2024-06-28 01:16:44,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:44,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:16:44,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:44,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:16:44,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:16:44,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:44,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 181 transitions, 1941 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 01:16:44,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:44,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:44,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:44,915 INFO L124 PetriNetUnfolderBase]: 757/1419 cut-off events. [2024-06-28 01:16:44,915 INFO L125 PetriNetUnfolderBase]: For 48710/48710 co-relation queries the response was YES. [2024-06-28 01:16:44,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9019 conditions, 1419 events. 757/1419 cut-off events. For 48710/48710 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7636 event pairs, 133 based on Foata normal form. 2/1340 useless extension candidates. Maximal degree in co-relation 8927. Up to 1165 conditions per place. [2024-06-28 01:16:44,928 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 168 selfloop transitions, 28 changer transitions 0/205 dead transitions. [2024-06-28 01:16:44,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 205 transitions, 2515 flow [2024-06-28 01:16:44,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:44,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:44,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 01:16:44,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45345345345345345 [2024-06-28 01:16:44,929 INFO L175 Difference]: Start difference. First operand has 198 places, 181 transitions, 1941 flow. Second operand 9 states and 151 transitions. [2024-06-28 01:16:44,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 205 transitions, 2515 flow [2024-06-28 01:16:45,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 205 transitions, 2446 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 01:16:45,029 INFO L231 Difference]: Finished difference. Result has 198 places, 184 transitions, 2040 flow [2024-06-28 01:16:45,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1872, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2040, PETRI_PLACES=198, PETRI_TRANSITIONS=184} [2024-06-28 01:16:45,029 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 157 predicate places. [2024-06-28 01:16:45,030 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 184 transitions, 2040 flow [2024-06-28 01:16:45,030 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 01:16:45,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:45,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:45,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:16:45,030 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:45,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:45,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1572688106, now seen corresponding path program 5 times [2024-06-28 01:16:45,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:45,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243979368] [2024-06-28 01:16:45,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:45,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:45,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:45,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:45,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243979368] [2024-06-28 01:16:45,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243979368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:45,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:45,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:45,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149350928] [2024-06-28 01:16:45,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:45,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:45,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:45,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:45,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:45,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:45,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 184 transitions, 2040 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 01:16:45,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:45,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:45,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:46,246 INFO L124 PetriNetUnfolderBase]: 774/1459 cut-off events. [2024-06-28 01:16:46,246 INFO L125 PetriNetUnfolderBase]: For 51341/51341 co-relation queries the response was YES. [2024-06-28 01:16:46,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9307 conditions, 1459 events. 774/1459 cut-off events. For 51341/51341 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7965 event pairs, 138 based on Foata normal form. 2/1378 useless extension candidates. Maximal degree in co-relation 9214. Up to 1193 conditions per place. [2024-06-28 01:16:46,257 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 174 selfloop transitions, 25 changer transitions 0/208 dead transitions. [2024-06-28 01:16:46,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 208 transitions, 2557 flow [2024-06-28 01:16:46,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:46,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:46,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 01:16:46,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-28 01:16:46,259 INFO L175 Difference]: Start difference. First operand has 198 places, 184 transitions, 2040 flow. Second operand 9 states and 150 transitions. [2024-06-28 01:16:46,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 208 transitions, 2557 flow [2024-06-28 01:16:46,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 208 transitions, 2433 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 01:16:46,360 INFO L231 Difference]: Finished difference. Result has 201 places, 187 transitions, 2016 flow [2024-06-28 01:16:46,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1916, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2016, PETRI_PLACES=201, PETRI_TRANSITIONS=187} [2024-06-28 01:16:46,362 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 160 predicate places. [2024-06-28 01:16:46,362 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 187 transitions, 2016 flow [2024-06-28 01:16:46,362 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 01:16:46,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:46,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:46,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:16:46,363 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:46,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:46,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1580045708, now seen corresponding path program 4 times [2024-06-28 01:16:46,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:46,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916365623] [2024-06-28 01:16:46,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:46,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:47,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:47,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:47,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916365623] [2024-06-28 01:16:47,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916365623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:47,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:47,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:16:47,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294608713] [2024-06-28 01:16:47,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:47,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:16:47,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:47,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:16:47,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:16:47,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:47,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 187 transitions, 2016 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 01:16:47,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:47,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:47,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:48,012 INFO L124 PetriNetUnfolderBase]: 831/1550 cut-off events. [2024-06-28 01:16:48,012 INFO L125 PetriNetUnfolderBase]: For 65283/65283 co-relation queries the response was YES. [2024-06-28 01:16:48,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10745 conditions, 1550 events. 831/1550 cut-off events. For 65283/65283 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 8479 event pairs, 139 based on Foata normal form. 1/1457 useless extension candidates. Maximal degree in co-relation 10650. Up to 1106 conditions per place. [2024-06-28 01:16:48,027 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 158 selfloop transitions, 53 changer transitions 0/220 dead transitions. [2024-06-28 01:16:48,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 220 transitions, 3198 flow [2024-06-28 01:16:48,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:16:48,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:16:48,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 01:16:48,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-28 01:16:48,028 INFO L175 Difference]: Start difference. First operand has 201 places, 187 transitions, 2016 flow. Second operand 10 states and 173 transitions. [2024-06-28 01:16:48,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 220 transitions, 3198 flow [2024-06-28 01:16:48,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 220 transitions, 3128 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 01:16:48,146 INFO L231 Difference]: Finished difference. Result has 207 places, 197 transitions, 2415 flow [2024-06-28 01:16:48,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1946, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2415, PETRI_PLACES=207, PETRI_TRANSITIONS=197} [2024-06-28 01:16:48,147 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 166 predicate places. [2024-06-28 01:16:48,147 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 197 transitions, 2415 flow [2024-06-28 01:16:48,147 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 01:16:48,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:48,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:48,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:16:48,148 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:48,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:48,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1873072452, now seen corresponding path program 5 times [2024-06-28 01:16:48,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:48,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112032546] [2024-06-28 01:16:48,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:48,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:49,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:49,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:49,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112032546] [2024-06-28 01:16:49,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112032546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:49,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:49,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:16:49,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163239554] [2024-06-28 01:16:49,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:49,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:16:49,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:49,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:16:49,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:16:49,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:49,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 197 transitions, 2415 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 01:16:49,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:49,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:49,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:49,770 INFO L124 PetriNetUnfolderBase]: 837/1561 cut-off events. [2024-06-28 01:16:49,771 INFO L125 PetriNetUnfolderBase]: For 68368/68368 co-relation queries the response was YES. [2024-06-28 01:16:49,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11063 conditions, 1561 events. 837/1561 cut-off events. For 68368/68368 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 8573 event pairs, 140 based on Foata normal form. 1/1467 useless extension candidates. Maximal degree in co-relation 10965. Up to 1271 conditions per place. [2024-06-28 01:16:49,785 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 178 selfloop transitions, 34 changer transitions 0/221 dead transitions. [2024-06-28 01:16:49,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 221 transitions, 3169 flow [2024-06-28 01:16:49,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:16:49,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:16:49,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:16:49,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-28 01:16:49,786 INFO L175 Difference]: Start difference. First operand has 207 places, 197 transitions, 2415 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:16:49,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 221 transitions, 3169 flow [2024-06-28 01:16:49,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 221 transitions, 3022 flow, removed 59 selfloop flow, removed 4 redundant places. [2024-06-28 01:16:49,935 INFO L231 Difference]: Finished difference. Result has 213 places, 201 transitions, 2485 flow [2024-06-28 01:16:49,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2280, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2485, PETRI_PLACES=213, PETRI_TRANSITIONS=201} [2024-06-28 01:16:49,936 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 172 predicate places. [2024-06-28 01:16:49,936 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 201 transitions, 2485 flow [2024-06-28 01:16:49,936 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 01:16:49,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:49,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:49,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:16:49,937 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:49,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:49,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1572903308, now seen corresponding path program 6 times [2024-06-28 01:16:49,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:49,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222496722] [2024-06-28 01:16:49,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:49,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:50,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:50,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:50,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222496722] [2024-06-28 01:16:50,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222496722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:50,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:50,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:16:50,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529146669] [2024-06-28 01:16:50,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:50,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:16:50,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:50,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:16:50,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:16:51,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:51,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 201 transitions, 2485 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 01:16:51,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:51,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:51,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:51,617 INFO L124 PetriNetUnfolderBase]: 851/1584 cut-off events. [2024-06-28 01:16:51,617 INFO L125 PetriNetUnfolderBase]: For 71171/71171 co-relation queries the response was YES. [2024-06-28 01:16:51,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11242 conditions, 1584 events. 851/1584 cut-off events. For 71171/71171 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8726 event pairs, 140 based on Foata normal form. 2/1487 useless extension candidates. Maximal degree in co-relation 11142. Up to 1268 conditions per place. [2024-06-28 01:16:51,633 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 177 selfloop transitions, 39 changer transitions 0/225 dead transitions. [2024-06-28 01:16:51,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 225 transitions, 3245 flow [2024-06-28 01:16:51,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:16:51,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:16:51,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 01:16:51,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-28 01:16:51,634 INFO L175 Difference]: Start difference. First operand has 213 places, 201 transitions, 2485 flow. Second operand 10 states and 167 transitions. [2024-06-28 01:16:51,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 225 transitions, 3245 flow [2024-06-28 01:16:51,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 225 transitions, 3080 flow, removed 57 selfloop flow, removed 6 redundant places. [2024-06-28 01:16:51,782 INFO L231 Difference]: Finished difference. Result has 217 places, 205 transitions, 2546 flow [2024-06-28 01:16:51,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2320, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2546, PETRI_PLACES=217, PETRI_TRANSITIONS=205} [2024-06-28 01:16:51,783 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 176 predicate places. [2024-06-28 01:16:51,783 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 205 transitions, 2546 flow [2024-06-28 01:16:51,784 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 01:16:51,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:51,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:51,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:16:51,784 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:51,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:51,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1865914893, now seen corresponding path program 2 times [2024-06-28 01:16:51,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:51,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584017698] [2024-06-28 01:16:51,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:51,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:52,894 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 01:16:52,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:52,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584017698] [2024-06-28 01:16:52,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584017698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:52,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:52,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:16:52,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80309974] [2024-06-28 01:16:52,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:52,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:16:52,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:52,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:16:52,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:16:53,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:53,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 205 transitions, 2546 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 01:16:53,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:53,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:53,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:53,485 INFO L124 PetriNetUnfolderBase]: 857/1593 cut-off events. [2024-06-28 01:16:53,485 INFO L125 PetriNetUnfolderBase]: For 70681/70681 co-relation queries the response was YES. [2024-06-28 01:16:53,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11286 conditions, 1593 events. 857/1593 cut-off events. For 70681/70681 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8773 event pairs, 139 based on Foata normal form. 1/1494 useless extension candidates. Maximal degree in co-relation 11184. Up to 1226 conditions per place. [2024-06-28 01:16:53,498 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 169 selfloop transitions, 48 changer transitions 0/226 dead transitions. [2024-06-28 01:16:53,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 226 transitions, 3242 flow [2024-06-28 01:16:53,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:53,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:53,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 01:16:53,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-28 01:16:53,499 INFO L175 Difference]: Start difference. First operand has 217 places, 205 transitions, 2546 flow. Second operand 9 states and 155 transitions. [2024-06-28 01:16:53,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 226 transitions, 3242 flow [2024-06-28 01:16:53,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 226 transitions, 3141 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 01:16:53,647 INFO L231 Difference]: Finished difference. Result has 220 places, 208 transitions, 2625 flow [2024-06-28 01:16:53,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2445, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2625, PETRI_PLACES=220, PETRI_TRANSITIONS=208} [2024-06-28 01:16:53,648 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 179 predicate places. [2024-06-28 01:16:53,648 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 208 transitions, 2625 flow [2024-06-28 01:16:53,648 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 01:16:53,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:53,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:53,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:16:53,648 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:53,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:53,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1319447664, now seen corresponding path program 7 times [2024-06-28 01:16:53,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:53,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011631950] [2024-06-28 01:16:53,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:53,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:54,683 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 01:16:54,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:54,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011631950] [2024-06-28 01:16:54,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011631950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:54,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:54,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:16:54,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220060882] [2024-06-28 01:16:54,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:54,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:16:54,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:54,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:16:54,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:16:54,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:54,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 208 transitions, 2625 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 01:16:54,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:54,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:54,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:55,286 INFO L124 PetriNetUnfolderBase]: 863/1608 cut-off events. [2024-06-28 01:16:55,287 INFO L125 PetriNetUnfolderBase]: For 71617/71617 co-relation queries the response was YES. [2024-06-28 01:16:55,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11466 conditions, 1608 events. 863/1608 cut-off events. For 71617/71617 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 8892 event pairs, 139 based on Foata normal form. 1/1508 useless extension candidates. Maximal degree in co-relation 11362. Up to 1223 conditions per place. [2024-06-28 01:16:55,301 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 169 selfloop transitions, 53 changer transitions 0/231 dead transitions. [2024-06-28 01:16:55,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 231 transitions, 3361 flow [2024-06-28 01:16:55,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:16:55,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:16:55,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 01:16:55,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-28 01:16:55,305 INFO L175 Difference]: Start difference. First operand has 220 places, 208 transitions, 2625 flow. Second operand 10 states and 168 transitions. [2024-06-28 01:16:55,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 231 transitions, 3361 flow [2024-06-28 01:16:55,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 231 transitions, 3264 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 01:16:55,459 INFO L231 Difference]: Finished difference. Result has 224 places, 211 transitions, 2739 flow [2024-06-28 01:16:55,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2530, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2739, PETRI_PLACES=224, PETRI_TRANSITIONS=211} [2024-06-28 01:16:55,460 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 183 predicate places. [2024-06-28 01:16:55,460 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 211 transitions, 2739 flow [2024-06-28 01:16:55,460 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 01:16:55,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:55,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:55,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:16:55,461 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:55,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:55,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1580322197, now seen corresponding path program 3 times [2024-06-28 01:16:55,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:55,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462079282] [2024-06-28 01:16:55,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:55,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:56,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:56,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462079282] [2024-06-28 01:16:56,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462079282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:56,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:56,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:16:56,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110292382] [2024-06-28 01:16:56,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:56,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:16:56,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:56,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:16:56,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:16:56,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:56,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 211 transitions, 2739 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 01:16:56,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:56,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:56,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:57,254 INFO L124 PetriNetUnfolderBase]: 861/1602 cut-off events. [2024-06-28 01:16:57,254 INFO L125 PetriNetUnfolderBase]: For 70454/70454 co-relation queries the response was YES. [2024-06-28 01:16:57,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11460 conditions, 1602 events. 861/1602 cut-off events. For 70454/70454 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 8846 event pairs, 133 based on Foata normal form. 1/1502 useless extension candidates. Maximal degree in co-relation 11355. Up to 1188 conditions per place. [2024-06-28 01:16:57,268 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 163 selfloop transitions, 57 changer transitions 0/229 dead transitions. [2024-06-28 01:16:57,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 229 transitions, 3267 flow [2024-06-28 01:16:57,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:57,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:57,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 01:16:57,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-06-28 01:16:57,269 INFO L175 Difference]: Start difference. First operand has 224 places, 211 transitions, 2739 flow. Second operand 9 states and 154 transitions. [2024-06-28 01:16:57,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 229 transitions, 3267 flow [2024-06-28 01:16:57,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 229 transitions, 3136 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 01:16:57,422 INFO L231 Difference]: Finished difference. Result has 227 places, 211 transitions, 2729 flow [2024-06-28 01:16:57,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2608, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2729, PETRI_PLACES=227, PETRI_TRANSITIONS=211} [2024-06-28 01:16:57,423 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 186 predicate places. [2024-06-28 01:16:57,423 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 211 transitions, 2729 flow [2024-06-28 01:16:57,423 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 01:16:57,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:57,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:57,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:16:57,424 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:57,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:57,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1580312618, now seen corresponding path program 8 times [2024-06-28 01:16:57,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:57,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172013996] [2024-06-28 01:16:57,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:57,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:58,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:58,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:58,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172013996] [2024-06-28 01:16:58,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172013996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:58,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:58,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:16:58,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572106048] [2024-06-28 01:16:58,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:58,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:16:58,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:58,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:16:58,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:16:58,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:16:58,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 211 transitions, 2729 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 01:16:58,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:58,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:16:58,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:59,188 INFO L124 PetriNetUnfolderBase]: 859/1599 cut-off events. [2024-06-28 01:16:59,189 INFO L125 PetriNetUnfolderBase]: For 69189/69189 co-relation queries the response was YES. [2024-06-28 01:16:59,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11439 conditions, 1599 events. 859/1599 cut-off events. For 69189/69189 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 8818 event pairs, 139 based on Foata normal form. 1/1499 useless extension candidates. Maximal degree in co-relation 11332. Up to 1218 conditions per place. [2024-06-28 01:16:59,203 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 164 selfloop transitions, 57 changer transitions 0/230 dead transitions. [2024-06-28 01:16:59,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 230 transitions, 3245 flow [2024-06-28 01:16:59,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:16:59,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:16:59,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:16:59,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:16:59,205 INFO L175 Difference]: Start difference. First operand has 227 places, 211 transitions, 2729 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:16:59,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 230 transitions, 3245 flow [2024-06-28 01:16:59,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 230 transitions, 3090 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 01:16:59,378 INFO L231 Difference]: Finished difference. Result has 229 places, 211 transitions, 2693 flow [2024-06-28 01:16:59,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2574, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2693, PETRI_PLACES=229, PETRI_TRANSITIONS=211} [2024-06-28 01:16:59,378 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 188 predicate places. [2024-06-28 01:16:59,378 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 211 transitions, 2693 flow [2024-06-28 01:16:59,378 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 01:16:59,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:59,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:59,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:16:59,388 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:59,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:59,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1580322538, now seen corresponding path program 1 times [2024-06-28 01:16:59,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:59,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051222818] [2024-06-28 01:16:59,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:59,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:00,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:00,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:00,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051222818] [2024-06-28 01:17:00,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051222818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:00,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:00,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:00,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020604101] [2024-06-28 01:17:00,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:00,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:00,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:00,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:00,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:00,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:00,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 211 transitions, 2693 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 01:17:00,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:00,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:00,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:00,954 INFO L124 PetriNetUnfolderBase]: 876/1639 cut-off events. [2024-06-28 01:17:00,955 INFO L125 PetriNetUnfolderBase]: For 73727/73727 co-relation queries the response was YES. [2024-06-28 01:17:00,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11656 conditions, 1639 events. 876/1639 cut-off events. For 73727/73727 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9139 event pairs, 140 based on Foata normal form. 2/1538 useless extension candidates. Maximal degree in co-relation 11548. Up to 1388 conditions per place. [2024-06-28 01:17:00,970 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 211 selfloop transitions, 17 changer transitions 0/237 dead transitions. [2024-06-28 01:17:00,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 237 transitions, 3277 flow [2024-06-28 01:17:00,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:00,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:00,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 01:17:00,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-28 01:17:00,971 INFO L175 Difference]: Start difference. First operand has 229 places, 211 transitions, 2693 flow. Second operand 10 states and 161 transitions. [2024-06-28 01:17:00,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 237 transitions, 3277 flow [2024-06-28 01:17:01,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 237 transitions, 3180 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 01:17:01,141 INFO L231 Difference]: Finished difference. Result has 231 places, 212 transitions, 2664 flow [2024-06-28 01:17:01,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2596, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2664, PETRI_PLACES=231, PETRI_TRANSITIONS=212} [2024-06-28 01:17:01,142 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 190 predicate places. [2024-06-28 01:17:01,142 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 212 transitions, 2664 flow [2024-06-28 01:17:01,142 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 01:17:01,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:01,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:01,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:17:01,142 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:01,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:01,143 INFO L85 PathProgramCache]: Analyzing trace with hash 183793840, now seen corresponding path program 6 times [2024-06-28 01:17:01,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:01,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352652244] [2024-06-28 01:17:01,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:01,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:01,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:01,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:01,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352652244] [2024-06-28 01:17:01,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352652244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:01,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:01,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:17:01,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861804403] [2024-06-28 01:17:01,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:01,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:17:01,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:01,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:17:01,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:17:01,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:01,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 212 transitions, 2664 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 01:17:01,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:01,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:01,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:02,343 INFO L124 PetriNetUnfolderBase]: 877/1651 cut-off events. [2024-06-28 01:17:02,343 INFO L125 PetriNetUnfolderBase]: For 71761/71764 co-relation queries the response was YES. [2024-06-28 01:17:02,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11503 conditions, 1651 events. 877/1651 cut-off events. For 71761/71764 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9291 event pairs, 149 based on Foata normal form. 2/1545 useless extension candidates. Maximal degree in co-relation 11394. Up to 1332 conditions per place. [2024-06-28 01:17:02,360 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 194 selfloop transitions, 30 changer transitions 0/233 dead transitions. [2024-06-28 01:17:02,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 233 transitions, 3221 flow [2024-06-28 01:17:02,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:17:02,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:17:02,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 01:17:02,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-28 01:17:02,361 INFO L175 Difference]: Start difference. First operand has 231 places, 212 transitions, 2664 flow. Second operand 9 states and 149 transitions. [2024-06-28 01:17:02,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 233 transitions, 3221 flow [2024-06-28 01:17:02,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 233 transitions, 3158 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 01:17:02,534 INFO L231 Difference]: Finished difference. Result has 232 places, 214 transitions, 2702 flow [2024-06-28 01:17:02,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2601, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2702, PETRI_PLACES=232, PETRI_TRANSITIONS=214} [2024-06-28 01:17:02,534 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 191 predicate places. [2024-06-28 01:17:02,534 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 214 transitions, 2702 flow [2024-06-28 01:17:02,535 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 01:17:02,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:02,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:02,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:17:02,535 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:02,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:02,535 INFO L85 PathProgramCache]: Analyzing trace with hash 716605628, now seen corresponding path program 9 times [2024-06-28 01:17:02,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:02,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109676231] [2024-06-28 01:17:02,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:02,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:03,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:03,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:03,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109676231] [2024-06-28 01:17:03,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109676231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:03,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:03,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:03,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135822644] [2024-06-28 01:17:03,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:03,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:03,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:03,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:03,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:03,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:03,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 214 transitions, 2702 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 01:17:03,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:03,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:03,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:04,305 INFO L124 PetriNetUnfolderBase]: 909/1710 cut-off events. [2024-06-28 01:17:04,305 INFO L125 PetriNetUnfolderBase]: For 80690/80693 co-relation queries the response was YES. [2024-06-28 01:17:04,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12355 conditions, 1710 events. 909/1710 cut-off events. For 80690/80693 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 9701 event pairs, 148 based on Foata normal form. 1/1596 useless extension candidates. Maximal degree in co-relation 12245. Up to 1335 conditions per place. [2024-06-28 01:17:04,324 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 187 selfloop transitions, 44 changer transitions 0/240 dead transitions. [2024-06-28 01:17:04,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 240 transitions, 3738 flow [2024-06-28 01:17:04,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:04,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:04,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 01:17:04,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-28 01:17:04,325 INFO L175 Difference]: Start difference. First operand has 232 places, 214 transitions, 2702 flow. Second operand 10 states and 168 transitions. [2024-06-28 01:17:04,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 240 transitions, 3738 flow [2024-06-28 01:17:04,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 240 transitions, 3624 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 01:17:04,537 INFO L231 Difference]: Finished difference. Result has 233 places, 221 transitions, 2933 flow [2024-06-28 01:17:04,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2588, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2933, PETRI_PLACES=233, PETRI_TRANSITIONS=221} [2024-06-28 01:17:04,541 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 192 predicate places. [2024-06-28 01:17:04,541 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 221 transitions, 2933 flow [2024-06-28 01:17:04,541 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 01:17:04,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:04,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:04,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:17:04,541 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:04,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:04,542 INFO L85 PathProgramCache]: Analyzing trace with hash 956861914, now seen corresponding path program 2 times [2024-06-28 01:17:04,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:04,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813755096] [2024-06-28 01:17:04,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:04,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:05,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:05,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:05,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813755096] [2024-06-28 01:17:05,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813755096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:05,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:05,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:05,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206465324] [2024-06-28 01:17:05,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:05,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:05,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:05,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:05,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:05,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:05,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 221 transitions, 2933 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 01:17:05,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:05,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:05,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:06,510 INFO L124 PetriNetUnfolderBase]: 926/1743 cut-off events. [2024-06-28 01:17:06,511 INFO L125 PetriNetUnfolderBase]: For 85008/85008 co-relation queries the response was YES. [2024-06-28 01:17:06,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12570 conditions, 1743 events. 926/1743 cut-off events. For 85008/85008 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 9921 event pairs, 149 based on Foata normal form. 2/1631 useless extension candidates. Maximal degree in co-relation 12461. Up to 1471 conditions per place. [2024-06-28 01:17:06,527 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 217 selfloop transitions, 19 changer transitions 0/245 dead transitions. [2024-06-28 01:17:06,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 245 transitions, 3525 flow [2024-06-28 01:17:06,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:17:06,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:17:06,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-28 01:17:06,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4250614250614251 [2024-06-28 01:17:06,528 INFO L175 Difference]: Start difference. First operand has 233 places, 221 transitions, 2933 flow. Second operand 11 states and 173 transitions. [2024-06-28 01:17:06,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 245 transitions, 3525 flow [2024-06-28 01:17:06,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 245 transitions, 3384 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-28 01:17:06,752 INFO L231 Difference]: Finished difference. Result has 239 places, 222 transitions, 2866 flow [2024-06-28 01:17:06,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2792, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2866, PETRI_PLACES=239, PETRI_TRANSITIONS=222} [2024-06-28 01:17:06,753 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 198 predicate places. [2024-06-28 01:17:06,753 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 222 transitions, 2866 flow [2024-06-28 01:17:06,753 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 01:17:06,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:06,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:06,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:17:06,754 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:06,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:06,754 INFO L85 PathProgramCache]: Analyzing trace with hash 716613068, now seen corresponding path program 10 times [2024-06-28 01:17:06,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:06,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69742321] [2024-06-28 01:17:06,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:06,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:07,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:07,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:07,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69742321] [2024-06-28 01:17:07,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69742321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:07,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:07,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:07,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923138694] [2024-06-28 01:17:07,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:07,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:07,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:07,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:07,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:07,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:07,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 222 transitions, 2866 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 01:17:07,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:07,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:07,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:08,429 INFO L124 PetriNetUnfolderBase]: 924/1741 cut-off events. [2024-06-28 01:17:08,429 INFO L125 PetriNetUnfolderBase]: For 80851/80854 co-relation queries the response was YES. [2024-06-28 01:17:08,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12335 conditions, 1741 events. 924/1741 cut-off events. For 80851/80854 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 9921 event pairs, 153 based on Foata normal form. 1/1624 useless extension candidates. Maximal degree in co-relation 12224. Up to 1393 conditions per place. [2024-06-28 01:17:08,446 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 192 selfloop transitions, 39 changer transitions 0/240 dead transitions. [2024-06-28 01:17:08,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 240 transitions, 3436 flow [2024-06-28 01:17:08,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:08,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:08,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 01:17:08,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-28 01:17:08,447 INFO L175 Difference]: Start difference. First operand has 239 places, 222 transitions, 2866 flow. Second operand 10 states and 163 transitions. [2024-06-28 01:17:08,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 240 transitions, 3436 flow [2024-06-28 01:17:08,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 240 transitions, 3372 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 01:17:08,639 INFO L231 Difference]: Finished difference. Result has 240 places, 223 transitions, 2927 flow [2024-06-28 01:17:08,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2802, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2927, PETRI_PLACES=240, PETRI_TRANSITIONS=223} [2024-06-28 01:17:08,640 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 199 predicate places. [2024-06-28 01:17:08,640 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 223 transitions, 2927 flow [2024-06-28 01:17:08,640 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 01:17:08,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:08,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:08,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:17:08,640 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:08,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:08,641 INFO L85 PathProgramCache]: Analyzing trace with hash 716613347, now seen corresponding path program 4 times [2024-06-28 01:17:08,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:08,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366131245] [2024-06-28 01:17:08,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:08,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:09,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:09,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366131245] [2024-06-28 01:17:09,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366131245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:09,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:09,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:09,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867340807] [2024-06-28 01:17:09,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:09,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:09,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:09,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:09,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:10,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:10,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 223 transitions, 2927 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 01:17:10,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:10,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:10,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:10,507 INFO L124 PetriNetUnfolderBase]: 920/1740 cut-off events. [2024-06-28 01:17:10,507 INFO L125 PetriNetUnfolderBase]: For 79423/79426 co-relation queries the response was YES. [2024-06-28 01:17:10,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12051 conditions, 1740 events. 920/1740 cut-off events. For 79423/79426 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 9972 event pairs, 158 based on Foata normal form. 2/1624 useless extension candidates. Maximal degree in co-relation 11939. Up to 1362 conditions per place. [2024-06-28 01:17:10,523 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 191 selfloop transitions, 40 changer transitions 0/240 dead transitions. [2024-06-28 01:17:10,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 240 transitions, 3457 flow [2024-06-28 01:17:10,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:10,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:10,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:17:10,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:17:10,525 INFO L175 Difference]: Start difference. First operand has 240 places, 223 transitions, 2927 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:17:10,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 240 transitions, 3457 flow [2024-06-28 01:17:10,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 240 transitions, 3290 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-28 01:17:10,733 INFO L231 Difference]: Finished difference. Result has 242 places, 223 transitions, 2846 flow [2024-06-28 01:17:10,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2760, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2846, PETRI_PLACES=242, PETRI_TRANSITIONS=223} [2024-06-28 01:17:10,734 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 201 predicate places. [2024-06-28 01:17:10,734 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 223 transitions, 2846 flow [2024-06-28 01:17:10,734 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 01:17:10,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:10,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:10,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:17:10,735 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:10,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:10,735 INFO L85 PathProgramCache]: Analyzing trace with hash 981459266, now seen corresponding path program 3 times [2024-06-28 01:17:10,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:10,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617611045] [2024-06-28 01:17:10,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:10,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:11,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:11,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:11,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617611045] [2024-06-28 01:17:11,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617611045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:11,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:11,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:17:11,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099912003] [2024-06-28 01:17:11,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:11,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:17:11,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:11,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:17:11,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:17:11,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:11,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 223 transitions, 2846 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:11,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:11,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:11,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:12,425 INFO L124 PetriNetUnfolderBase]: 957/1832 cut-off events. [2024-06-28 01:17:12,426 INFO L125 PetriNetUnfolderBase]: For 88328/88328 co-relation queries the response was YES. [2024-06-28 01:17:12,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12679 conditions, 1832 events. 957/1832 cut-off events. For 88328/88328 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10605 event pairs, 151 based on Foata normal form. 2/1716 useless extension candidates. Maximal degree in co-relation 12566. Up to 1453 conditions per place. [2024-06-28 01:17:12,443 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 222 selfloop transitions, 20 changer transitions 0/251 dead transitions. [2024-06-28 01:17:12,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 251 transitions, 3628 flow [2024-06-28 01:17:12,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:12,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:12,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:17:12,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-28 01:17:12,445 INFO L175 Difference]: Start difference. First operand has 242 places, 223 transitions, 2846 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:17:12,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 251 transitions, 3628 flow [2024-06-28 01:17:12,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 251 transitions, 3516 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 01:17:12,671 INFO L231 Difference]: Finished difference. Result has 242 places, 225 transitions, 2844 flow [2024-06-28 01:17:12,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2734, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2844, PETRI_PLACES=242, PETRI_TRANSITIONS=225} [2024-06-28 01:17:12,672 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 201 predicate places. [2024-06-28 01:17:12,673 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 225 transitions, 2844 flow [2024-06-28 01:17:12,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:12,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:12,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:12,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:17:12,673 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:12,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:12,674 INFO L85 PathProgramCache]: Analyzing trace with hash 981130976, now seen corresponding path program 4 times [2024-06-28 01:17:12,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:12,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307935343] [2024-06-28 01:17:12,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:12,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:13,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:13,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307935343] [2024-06-28 01:17:13,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307935343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:13,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:13,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:13,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049472842] [2024-06-28 01:17:13,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:13,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:13,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:13,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:13,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:13,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:13,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 225 transitions, 2844 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 01:17:13,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:13,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:13,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:14,594 INFO L124 PetriNetUnfolderBase]: 954/1813 cut-off events. [2024-06-28 01:17:14,594 INFO L125 PetriNetUnfolderBase]: For 85217/85217 co-relation queries the response was YES. [2024-06-28 01:17:14,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12477 conditions, 1813 events. 954/1813 cut-off events. For 85217/85217 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10532 event pairs, 164 based on Foata normal form. 2/1696 useless extension candidates. Maximal degree in co-relation 12363. Up to 1534 conditions per place. [2024-06-28 01:17:14,613 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 222 selfloop transitions, 15 changer transitions 0/246 dead transitions. [2024-06-28 01:17:14,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 246 transitions, 3400 flow [2024-06-28 01:17:14,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:14,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:14,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 01:17:14,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-06-28 01:17:14,615 INFO L175 Difference]: Start difference. First operand has 242 places, 225 transitions, 2844 flow. Second operand 10 states and 158 transitions. [2024-06-28 01:17:14,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 246 transitions, 3400 flow [2024-06-28 01:17:14,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 246 transitions, 3320 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 01:17:14,845 INFO L231 Difference]: Finished difference. Result has 246 places, 225 transitions, 2798 flow [2024-06-28 01:17:14,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2764, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2798, PETRI_PLACES=246, PETRI_TRANSITIONS=225} [2024-06-28 01:17:14,846 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 205 predicate places. [2024-06-28 01:17:14,846 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 225 transitions, 2798 flow [2024-06-28 01:17:14,846 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 01:17:14,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:14,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:14,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 01:17:14,847 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:14,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:14,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1546978960, now seen corresponding path program 11 times [2024-06-28 01:17:14,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:14,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077508553] [2024-06-28 01:17:14,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:14,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:16,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:16,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:16,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077508553] [2024-06-28 01:17:16,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077508553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:16,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:16,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:16,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700741331] [2024-06-28 01:17:16,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:16,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:16,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:16,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:16,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:16,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:16,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 225 transitions, 2798 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 01:17:16,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:16,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:16,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:16,697 INFO L124 PetriNetUnfolderBase]: 968/1841 cut-off events. [2024-06-28 01:17:16,697 INFO L125 PetriNetUnfolderBase]: For 85845/85848 co-relation queries the response was YES. [2024-06-28 01:17:16,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12576 conditions, 1841 events. 968/1841 cut-off events. For 85845/85848 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10734 event pairs, 167 based on Foata normal form. 1/1717 useless extension candidates. Maximal degree in co-relation 12460. Up to 1426 conditions per place. [2024-06-28 01:17:16,715 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 190 selfloop transitions, 48 changer transitions 0/247 dead transitions. [2024-06-28 01:17:16,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 247 transitions, 3636 flow [2024-06-28 01:17:16,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:16,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:16,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 01:17:16,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-28 01:17:16,717 INFO L175 Difference]: Start difference. First operand has 246 places, 225 transitions, 2798 flow. Second operand 10 states and 168 transitions. [2024-06-28 01:17:16,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 247 transitions, 3636 flow [2024-06-28 01:17:16,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 247 transitions, 3600 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 01:17:16,918 INFO L231 Difference]: Finished difference. Result has 247 places, 229 transitions, 3019 flow [2024-06-28 01:17:16,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2762, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3019, PETRI_PLACES=247, PETRI_TRANSITIONS=229} [2024-06-28 01:17:16,918 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 206 predicate places. [2024-06-28 01:17:16,918 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 229 transitions, 3019 flow [2024-06-28 01:17:16,918 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 01:17:16,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:16,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:16,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 01:17:16,919 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:16,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:16,919 INFO L85 PathProgramCache]: Analyzing trace with hash 723762908, now seen corresponding path program 12 times [2024-06-28 01:17:16,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:16,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077941319] [2024-06-28 01:17:16,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:16,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:17,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:17,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:17,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077941319] [2024-06-28 01:17:17,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077941319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:17,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:17,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:17,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254977736] [2024-06-28 01:17:17,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:17,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:17,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:17,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:17,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:18,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:18,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 229 transitions, 3019 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 01:17:18,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:18,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:18,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:18,550 INFO L124 PetriNetUnfolderBase]: 999/1895 cut-off events. [2024-06-28 01:17:18,550 INFO L125 PetriNetUnfolderBase]: For 100545/100548 co-relation queries the response was YES. [2024-06-28 01:17:18,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13665 conditions, 1895 events. 999/1895 cut-off events. For 100545/100548 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11111 event pairs, 168 based on Foata normal form. 2/1765 useless extension candidates. Maximal degree in co-relation 13548. Up to 1402 conditions per place. [2024-06-28 01:17:18,568 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 190 selfloop transitions, 59 changer transitions 0/258 dead transitions. [2024-06-28 01:17:18,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 258 transitions, 4361 flow [2024-06-28 01:17:18,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:18,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:18,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 01:17:18,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-28 01:17:18,570 INFO L175 Difference]: Start difference. First operand has 247 places, 229 transitions, 3019 flow. Second operand 10 states and 175 transitions. [2024-06-28 01:17:18,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 258 transitions, 4361 flow [2024-06-28 01:17:18,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 258 transitions, 4095 flow, removed 76 selfloop flow, removed 7 redundant places. [2024-06-28 01:17:18,820 INFO L231 Difference]: Finished difference. Result has 250 places, 237 transitions, 3224 flow [2024-06-28 01:17:18,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2792, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3224, PETRI_PLACES=250, PETRI_TRANSITIONS=237} [2024-06-28 01:17:18,820 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 209 predicate places. [2024-06-28 01:17:18,820 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 237 transitions, 3224 flow [2024-06-28 01:17:18,820 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 01:17:18,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:18,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:18,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 01:17:18,821 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:18,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:18,821 INFO L85 PathProgramCache]: Analyzing trace with hash 724022378, now seen corresponding path program 13 times [2024-06-28 01:17:18,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:18,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032173565] [2024-06-28 01:17:18,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:18,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:19,753 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 01:17:19,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:19,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032173565] [2024-06-28 01:17:19,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032173565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:19,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:19,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:19,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642051885] [2024-06-28 01:17:19,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:19,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:19,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:19,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:19,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:19,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:19,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 237 transitions, 3224 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 01:17:19,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:19,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:19,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:20,356 INFO L124 PetriNetUnfolderBase]: 1004/1905 cut-off events. [2024-06-28 01:17:20,356 INFO L125 PetriNetUnfolderBase]: For 100646/100649 co-relation queries the response was YES. [2024-06-28 01:17:20,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13606 conditions, 1905 events. 1004/1905 cut-off events. For 100646/100649 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11178 event pairs, 167 based on Foata normal form. 2/1773 useless extension candidates. Maximal degree in co-relation 13488. Up to 1409 conditions per place. [2024-06-28 01:17:20,374 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 187 selfloop transitions, 63 changer transitions 0/259 dead transitions. [2024-06-28 01:17:20,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 259 transitions, 4175 flow [2024-06-28 01:17:20,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:20,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:20,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 01:17:20,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-28 01:17:20,375 INFO L175 Difference]: Start difference. First operand has 250 places, 237 transitions, 3224 flow. Second operand 10 states and 172 transitions. [2024-06-28 01:17:20,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 259 transitions, 4175 flow [2024-06-28 01:17:20,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 259 transitions, 3902 flow, removed 110 selfloop flow, removed 5 redundant places. [2024-06-28 01:17:20,633 INFO L231 Difference]: Finished difference. Result has 255 places, 239 transitions, 3171 flow [2024-06-28 01:17:20,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2971, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3171, PETRI_PLACES=255, PETRI_TRANSITIONS=239} [2024-06-28 01:17:20,634 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 214 predicate places. [2024-06-28 01:17:20,634 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 239 transitions, 3171 flow [2024-06-28 01:17:20,634 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 01:17:20,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:20,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:20,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 01:17:20,635 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:20,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:20,635 INFO L85 PathProgramCache]: Analyzing trace with hash 724032298, now seen corresponding path program 5 times [2024-06-28 01:17:20,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:20,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785325925] [2024-06-28 01:17:20,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:20,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:21,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:21,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:21,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785325925] [2024-06-28 01:17:21,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785325925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:21,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:21,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:21,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178143552] [2024-06-28 01:17:21,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:21,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:21,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:21,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:21,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:21,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:21,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 239 transitions, 3171 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 01:17:21,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:21,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:21,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:22,556 INFO L124 PetriNetUnfolderBase]: 1021/1945 cut-off events. [2024-06-28 01:17:22,556 INFO L125 PetriNetUnfolderBase]: For 101041/101044 co-relation queries the response was YES. [2024-06-28 01:17:22,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13712 conditions, 1945 events. 1021/1945 cut-off events. For 101041/101044 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 11505 event pairs, 165 based on Foata normal form. 4/1814 useless extension candidates. Maximal degree in co-relation 13592. Up to 1616 conditions per place. [2024-06-28 01:17:22,578 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 234 selfloop transitions, 20 changer transitions 0/263 dead transitions. [2024-06-28 01:17:22,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 263 transitions, 3807 flow [2024-06-28 01:17:22,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:22,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:22,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 01:17:22,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-28 01:17:22,579 INFO L175 Difference]: Start difference. First operand has 255 places, 239 transitions, 3171 flow. Second operand 10 states and 160 transitions. [2024-06-28 01:17:22,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 263 transitions, 3807 flow [2024-06-28 01:17:22,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 263 transitions, 3647 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 01:17:22,880 INFO L231 Difference]: Finished difference. Result has 258 places, 240 transitions, 3091 flow [2024-06-28 01:17:22,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3011, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3091, PETRI_PLACES=258, PETRI_TRANSITIONS=240} [2024-06-28 01:17:22,881 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 217 predicate places. [2024-06-28 01:17:22,881 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 240 transitions, 3091 flow [2024-06-28 01:17:22,881 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 01:17:22,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:22,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:22,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 01:17:22,881 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:22,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:22,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1805533840, now seen corresponding path program 14 times [2024-06-28 01:17:22,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:22,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029838894] [2024-06-28 01:17:22,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:22,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:23,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:23,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:23,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029838894] [2024-06-28 01:17:23,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029838894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:23,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:23,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:23,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859451444] [2024-06-28 01:17:23,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:23,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:23,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:23,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:23,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:24,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:24,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 240 transitions, 3091 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 01:17:24,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:24,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:24,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:24,682 INFO L124 PetriNetUnfolderBase]: 1027/1956 cut-off events. [2024-06-28 01:17:24,682 INFO L125 PetriNetUnfolderBase]: For 100584/100584 co-relation queries the response was YES. [2024-06-28 01:17:24,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13674 conditions, 1956 events. 1027/1956 cut-off events. For 100584/100584 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 11592 event pairs, 166 based on Foata normal form. 1/1822 useless extension candidates. Maximal degree in co-relation 13553. Up to 1663 conditions per place. [2024-06-28 01:17:24,701 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 234 selfloop transitions, 16 changer transitions 0/259 dead transitions. [2024-06-28 01:17:24,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 259 transitions, 3741 flow [2024-06-28 01:17:24,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:24,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:24,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 01:17:24,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-28 01:17:24,703 INFO L175 Difference]: Start difference. First operand has 258 places, 240 transitions, 3091 flow. Second operand 10 states and 155 transitions. [2024-06-28 01:17:24,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 259 transitions, 3741 flow [2024-06-28 01:17:24,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 259 transitions, 3666 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 01:17:24,972 INFO L231 Difference]: Finished difference. Result has 260 places, 242 transitions, 3139 flow [2024-06-28 01:17:24,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3016, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3139, PETRI_PLACES=260, PETRI_TRANSITIONS=242} [2024-06-28 01:17:24,973 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 219 predicate places. [2024-06-28 01:17:24,973 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 242 transitions, 3139 flow [2024-06-28 01:17:24,973 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 01:17:24,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:24,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:24,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 01:17:24,973 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:24,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:24,974 INFO L85 PathProgramCache]: Analyzing trace with hash 972193335, now seen corresponding path program 5 times [2024-06-28 01:17:24,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:24,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589211756] [2024-06-28 01:17:24,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:24,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:26,328 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 01:17:26,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:26,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589211756] [2024-06-28 01:17:26,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589211756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:26,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:26,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:26,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58089439] [2024-06-28 01:17:26,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:26,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:26,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:26,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:26,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:26,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:26,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 242 transitions, 3139 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 01:17:26,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:26,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:26,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:26,983 INFO L124 PetriNetUnfolderBase]: 1033/1966 cut-off events. [2024-06-28 01:17:26,983 INFO L125 PetriNetUnfolderBase]: For 101691/101694 co-relation queries the response was YES. [2024-06-28 01:17:26,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13617 conditions, 1966 events. 1033/1966 cut-off events. For 101691/101694 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 11622 event pairs, 170 based on Foata normal form. 1/1828 useless extension candidates. Maximal degree in co-relation 13495. Up to 1426 conditions per place. [2024-06-28 01:17:27,001 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 183 selfloop transitions, 72 changer transitions 0/264 dead transitions. [2024-06-28 01:17:27,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 264 transitions, 3997 flow [2024-06-28 01:17:27,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:27,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:27,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 01:17:27,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-28 01:17:27,003 INFO L175 Difference]: Start difference. First operand has 260 places, 242 transitions, 3139 flow. Second operand 10 states and 169 transitions. [2024-06-28 01:17:27,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 264 transitions, 3997 flow [2024-06-28 01:17:27,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 264 transitions, 3880 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-28 01:17:27,259 INFO L231 Difference]: Finished difference. Result has 261 places, 246 transitions, 3303 flow [2024-06-28 01:17:27,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3022, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3303, PETRI_PLACES=261, PETRI_TRANSITIONS=246} [2024-06-28 01:17:27,259 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 220 predicate places. [2024-06-28 01:17:27,259 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 246 transitions, 3303 flow [2024-06-28 01:17:27,260 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 01:17:27,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:27,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:27,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 01:17:27,260 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:27,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:27,274 INFO L85 PathProgramCache]: Analyzing trace with hash 972193676, now seen corresponding path program 6 times [2024-06-28 01:17:27,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:27,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828497726] [2024-06-28 01:17:27,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:27,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:28,356 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 01:17:28,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:28,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828497726] [2024-06-28 01:17:28,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828497726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:28,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:28,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:28,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104016999] [2024-06-28 01:17:28,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:28,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:28,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:28,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:28,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:28,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:28,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 246 transitions, 3303 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 01:17:28,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:28,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:28,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:28,935 INFO L124 PetriNetUnfolderBase]: 1030/1964 cut-off events. [2024-06-28 01:17:28,935 INFO L125 PetriNetUnfolderBase]: For 100055/100058 co-relation queries the response was YES. [2024-06-28 01:17:28,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13531 conditions, 1964 events. 1030/1964 cut-off events. For 100055/100058 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 11642 event pairs, 164 based on Foata normal form. 4/1831 useless extension candidates. Maximal degree in co-relation 13408. Up to 1569 conditions per place. [2024-06-28 01:17:28,956 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 223 selfloop transitions, 35 changer transitions 0/267 dead transitions. [2024-06-28 01:17:28,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 267 transitions, 3905 flow [2024-06-28 01:17:28,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:17:28,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:17:28,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 01:17:28,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45645645645645644 [2024-06-28 01:17:28,957 INFO L175 Difference]: Start difference. First operand has 261 places, 246 transitions, 3303 flow. Second operand 9 states and 152 transitions. [2024-06-28 01:17:28,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 267 transitions, 3905 flow [2024-06-28 01:17:29,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 267 transitions, 3739 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-28 01:17:29,247 INFO L231 Difference]: Finished difference. Result has 264 places, 246 transitions, 3211 flow [2024-06-28 01:17:29,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3137, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3211, PETRI_PLACES=264, PETRI_TRANSITIONS=246} [2024-06-28 01:17:29,247 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 223 predicate places. [2024-06-28 01:17:29,247 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 246 transitions, 3211 flow [2024-06-28 01:17:29,248 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 01:17:29,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:29,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:29,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 01:17:29,248 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:29,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:29,248 INFO L85 PathProgramCache]: Analyzing trace with hash 971924286, now seen corresponding path program 15 times [2024-06-28 01:17:29,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:29,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400021352] [2024-06-28 01:17:29,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:29,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:30,143 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 01:17:30,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:30,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400021352] [2024-06-28 01:17:30,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400021352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:30,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:30,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:30,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451394124] [2024-06-28 01:17:30,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:30,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:30,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:30,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:30,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:30,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:30,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 246 transitions, 3211 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 01:17:30,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:30,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:30,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:30,734 INFO L124 PetriNetUnfolderBase]: 1069/2026 cut-off events. [2024-06-28 01:17:30,734 INFO L125 PetriNetUnfolderBase]: For 115364/115367 co-relation queries the response was YES. [2024-06-28 01:17:30,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14712 conditions, 2026 events. 1069/2026 cut-off events. For 115364/115367 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 12059 event pairs, 170 based on Foata normal form. 2/1882 useless extension candidates. Maximal degree in co-relation 14587. Up to 1149 conditions per place. [2024-06-28 01:17:30,757 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 153 selfloop transitions, 113 changer transitions 0/275 dead transitions. [2024-06-28 01:17:30,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 275 transitions, 4589 flow [2024-06-28 01:17:30,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:30,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:30,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-28 01:17:30,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-28 01:17:30,759 INFO L175 Difference]: Start difference. First operand has 264 places, 246 transitions, 3211 flow. Second operand 10 states and 176 transitions. [2024-06-28 01:17:30,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 275 transitions, 4589 flow [2024-06-28 01:17:31,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 275 transitions, 4449 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 01:17:31,080 INFO L231 Difference]: Finished difference. Result has 266 places, 253 transitions, 3570 flow [2024-06-28 01:17:31,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3071, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3570, PETRI_PLACES=266, PETRI_TRANSITIONS=253} [2024-06-28 01:17:31,081 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 225 predicate places. [2024-06-28 01:17:31,081 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 253 transitions, 3570 flow [2024-06-28 01:17:31,081 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 01:17:31,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:31,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:31,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 01:17:31,082 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:31,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:31,082 INFO L85 PathProgramCache]: Analyzing trace with hash 971916846, now seen corresponding path program 16 times [2024-06-28 01:17:31,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:31,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218662014] [2024-06-28 01:17:31,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:31,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:32,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:32,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:32,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218662014] [2024-06-28 01:17:32,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218662014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:32,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:32,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:32,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85797795] [2024-06-28 01:17:32,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:32,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:32,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:32,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:32,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:33,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:33,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 253 transitions, 3570 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 01:17:33,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:33,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:33,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:33,719 INFO L124 PetriNetUnfolderBase]: 1067/2023 cut-off events. [2024-06-28 01:17:33,719 INFO L125 PetriNetUnfolderBase]: For 112571/112574 co-relation queries the response was YES. [2024-06-28 01:17:33,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14705 conditions, 2023 events. 1067/2023 cut-off events. For 112571/112574 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 12026 event pairs, 166 based on Foata normal form. 1/1877 useless extension candidates. Maximal degree in co-relation 14579. Up to 1344 conditions per place. [2024-06-28 01:17:33,742 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 169 selfloop transitions, 100 changer transitions 0/278 dead transitions. [2024-06-28 01:17:33,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 278 transitions, 4618 flow [2024-06-28 01:17:33,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:33,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:33,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 01:17:33,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-28 01:17:33,743 INFO L175 Difference]: Start difference. First operand has 266 places, 253 transitions, 3570 flow. Second operand 10 states and 169 transitions. [2024-06-28 01:17:33,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 278 transitions, 4618 flow [2024-06-28 01:17:34,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 278 transitions, 3973 flow, removed 118 selfloop flow, removed 12 redundant places. [2024-06-28 01:17:34,080 INFO L231 Difference]: Finished difference. Result has 266 places, 260 transitions, 3497 flow [2024-06-28 01:17:34,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3016, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3497, PETRI_PLACES=266, PETRI_TRANSITIONS=260} [2024-06-28 01:17:34,080 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 225 predicate places. [2024-06-28 01:17:34,080 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 260 transitions, 3497 flow [2024-06-28 01:17:34,081 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 01:17:34,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:34,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:34,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 01:17:34,081 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:34,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:34,081 INFO L85 PathProgramCache]: Analyzing trace with hash 973113857, now seen corresponding path program 6 times [2024-06-28 01:17:34,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:34,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977431050] [2024-06-28 01:17:34,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:34,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:35,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:35,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:35,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977431050] [2024-06-28 01:17:35,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977431050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:35,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:35,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:35,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266826687] [2024-06-28 01:17:35,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:35,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:35,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:35,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:35,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:36,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:36,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 260 transitions, 3497 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 01:17:36,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:36,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:36,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:36,575 INFO L124 PetriNetUnfolderBase]: 1064/2017 cut-off events. [2024-06-28 01:17:36,575 INFO L125 PetriNetUnfolderBase]: For 101696/101699 co-relation queries the response was YES. [2024-06-28 01:17:36,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13758 conditions, 2017 events. 1064/2017 cut-off events. For 101696/101699 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 12019 event pairs, 169 based on Foata normal form. 1/1872 useless extension candidates. Maximal degree in co-relation 13635. Up to 1485 conditions per place. [2024-06-28 01:17:36,596 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 198 selfloop transitions, 70 changer transitions 0/277 dead transitions. [2024-06-28 01:17:36,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 277 transitions, 4101 flow [2024-06-28 01:17:36,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:36,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:36,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:17:36,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-28 01:17:36,597 INFO L175 Difference]: Start difference. First operand has 266 places, 260 transitions, 3497 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:17:36,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 277 transitions, 4101 flow [2024-06-28 01:17:36,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 277 transitions, 3960 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-28 01:17:36,880 INFO L231 Difference]: Finished difference. Result has 271 places, 260 transitions, 3501 flow [2024-06-28 01:17:36,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3356, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3501, PETRI_PLACES=271, PETRI_TRANSITIONS=260} [2024-06-28 01:17:36,881 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 230 predicate places. [2024-06-28 01:17:36,881 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 260 transitions, 3501 flow [2024-06-28 01:17:36,881 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 01:17:36,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:36,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:36,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 01:17:36,882 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:36,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:36,882 INFO L85 PathProgramCache]: Analyzing trace with hash 972184035, now seen corresponding path program 7 times [2024-06-28 01:17:36,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:36,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960474313] [2024-06-28 01:17:36,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:36,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:38,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:38,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:38,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960474313] [2024-06-28 01:17:38,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960474313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:38,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:38,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:38,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299539327] [2024-06-28 01:17:38,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:38,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:38,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:38,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:38,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:38,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:38,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 260 transitions, 3501 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 01:17:38,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:38,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:38,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:38,847 INFO L124 PetriNetUnfolderBase]: 1062/2017 cut-off events. [2024-06-28 01:17:38,847 INFO L125 PetriNetUnfolderBase]: For 100251/100254 co-relation queries the response was YES. [2024-06-28 01:17:38,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13721 conditions, 2017 events. 1062/2017 cut-off events. For 100251/100254 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 12001 event pairs, 169 based on Foata normal form. 1/1872 useless extension candidates. Maximal degree in co-relation 13596. Up to 1482 conditions per place. [2024-06-28 01:17:38,867 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 199 selfloop transitions, 69 changer transitions 0/277 dead transitions. [2024-06-28 01:17:38,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 277 transitions, 4105 flow [2024-06-28 01:17:38,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:38,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:38,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 01:17:38,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-28 01:17:38,869 INFO L175 Difference]: Start difference. First operand has 271 places, 260 transitions, 3501 flow. Second operand 10 states and 167 transitions. [2024-06-28 01:17:38,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 277 transitions, 4105 flow [2024-06-28 01:17:39,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 277 transitions, 3886 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-28 01:17:39,137 INFO L231 Difference]: Finished difference. Result has 273 places, 260 transitions, 3425 flow [2024-06-28 01:17:39,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3282, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3425, PETRI_PLACES=273, PETRI_TRANSITIONS=260} [2024-06-28 01:17:39,137 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 232 predicate places. [2024-06-28 01:17:39,138 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 260 transitions, 3425 flow [2024-06-28 01:17:39,138 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 01:17:39,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:39,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:39,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 01:17:39,138 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:39,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:39,139 INFO L85 PathProgramCache]: Analyzing trace with hash 972183756, now seen corresponding path program 17 times [2024-06-28 01:17:39,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:39,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235060872] [2024-06-28 01:17:39,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:39,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:40,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:40,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:40,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235060872] [2024-06-28 01:17:40,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235060872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:40,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:40,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:40,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790629759] [2024-06-28 01:17:40,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:40,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:40,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:40,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:40,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:40,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:40,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 260 transitions, 3425 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 01:17:40,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:40,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:40,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:40,819 INFO L124 PetriNetUnfolderBase]: 1076/2037 cut-off events. [2024-06-28 01:17:40,820 INFO L125 PetriNetUnfolderBase]: For 105386/105389 co-relation queries the response was YES. [2024-06-28 01:17:40,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13886 conditions, 2037 events. 1076/2037 cut-off events. For 105386/105389 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 12104 event pairs, 169 based on Foata normal form. 2/1889 useless extension candidates. Maximal degree in co-relation 13760. Up to 1161 conditions per place. [2024-06-28 01:17:40,842 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 158 selfloop transitions, 118 changer transitions 0/285 dead transitions. [2024-06-28 01:17:40,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 285 transitions, 4829 flow [2024-06-28 01:17:40,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:40,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:40,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-28 01:17:40,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2024-06-28 01:17:40,843 INFO L175 Difference]: Start difference. First operand has 273 places, 260 transitions, 3425 flow. Second operand 10 states and 179 transitions. [2024-06-28 01:17:40,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 285 transitions, 4829 flow [2024-06-28 01:17:41,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 285 transitions, 4632 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-28 01:17:41,167 INFO L231 Difference]: Finished difference. Result has 273 places, 264 transitions, 3601 flow [2024-06-28 01:17:41,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3228, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3601, PETRI_PLACES=273, PETRI_TRANSITIONS=264} [2024-06-28 01:17:41,167 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 232 predicate places. [2024-06-28 01:17:41,167 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 264 transitions, 3601 flow [2024-06-28 01:17:41,167 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 01:17:41,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:41,168 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 01:17:41,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 01:17:41,168 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:41,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:41,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1235321480, now seen corresponding path program 1 times [2024-06-28 01:17:41,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:41,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972033627] [2024-06-28 01:17:41,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:41,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:42,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:42,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:42,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972033627] [2024-06-28 01:17:42,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972033627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:42,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:42,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:42,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932728623] [2024-06-28 01:17:42,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:42,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:42,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:42,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:42,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:42,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:42,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 264 transitions, 3601 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 01:17:42,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:42,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:42,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:42,717 INFO L124 PetriNetUnfolderBase]: 1093/2057 cut-off events. [2024-06-28 01:17:42,717 INFO L125 PetriNetUnfolderBase]: For 109657/109657 co-relation queries the response was YES. [2024-06-28 01:17:42,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14258 conditions, 2057 events. 1093/2057 cut-off events. For 109657/109657 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 12242 event pairs, 77 based on Foata normal form. 2/1918 useless extension candidates. Maximal degree in co-relation 14132. Up to 1593 conditions per place. [2024-06-28 01:17:42,740 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 266 selfloop transitions, 25 changer transitions 0/300 dead transitions. [2024-06-28 01:17:42,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 300 transitions, 4339 flow [2024-06-28 01:17:42,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:42,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:42,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 01:17:42,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-28 01:17:42,742 INFO L175 Difference]: Start difference. First operand has 273 places, 264 transitions, 3601 flow. Second operand 10 states and 172 transitions. [2024-06-28 01:17:42,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 300 transitions, 4339 flow [2024-06-28 01:17:43,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 300 transitions, 4071 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 01:17:43,094 INFO L231 Difference]: Finished difference. Result has 277 places, 265 transitions, 3412 flow [2024-06-28 01:17:43,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3333, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3412, PETRI_PLACES=277, PETRI_TRANSITIONS=265} [2024-06-28 01:17:43,095 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 236 predicate places. [2024-06-28 01:17:43,095 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 265 transitions, 3412 flow [2024-06-28 01:17:43,095 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 01:17:43,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:43,095 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 01:17:43,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 01:17:43,096 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:43,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:43,096 INFO L85 PathProgramCache]: Analyzing trace with hash -64729856, now seen corresponding path program 2 times [2024-06-28 01:17:43,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:43,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221653744] [2024-06-28 01:17:43,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:43,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:44,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:44,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:44,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221653744] [2024-06-28 01:17:44,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221653744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:44,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:44,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:44,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716765472] [2024-06-28 01:17:44,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:44,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:44,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:44,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:44,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:44,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:44,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 265 transitions, 3412 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 01:17:44,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:44,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:44,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:44,791 INFO L124 PetriNetUnfolderBase]: 1110/2104 cut-off events. [2024-06-28 01:17:44,791 INFO L125 PetriNetUnfolderBase]: For 110239/110239 co-relation queries the response was YES. [2024-06-28 01:17:44,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14120 conditions, 2104 events. 1110/2104 cut-off events. For 110239/110239 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 12652 event pairs, 170 based on Foata normal form. 2/1957 useless extension candidates. Maximal degree in co-relation 13993. Up to 1735 conditions per place. [2024-06-28 01:17:44,815 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 263 selfloop transitions, 23 changer transitions 0/295 dead transitions. [2024-06-28 01:17:44,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 295 transitions, 4120 flow [2024-06-28 01:17:44,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:44,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:44,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 01:17:44,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-28 01:17:44,817 INFO L175 Difference]: Start difference. First operand has 277 places, 265 transitions, 3412 flow. Second operand 10 states and 167 transitions. [2024-06-28 01:17:44,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 295 transitions, 4120 flow [2024-06-28 01:17:45,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 295 transitions, 4053 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 01:17:45,145 INFO L231 Difference]: Finished difference. Result has 279 places, 266 transitions, 3421 flow [2024-06-28 01:17:45,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3345, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3421, PETRI_PLACES=279, PETRI_TRANSITIONS=266} [2024-06-28 01:17:45,146 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 238 predicate places. [2024-06-28 01:17:45,146 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 266 transitions, 3421 flow [2024-06-28 01:17:45,146 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 01:17:45,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:45,146 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 01:17:45,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 01:17:45,146 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:45,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:45,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1140618642, now seen corresponding path program 3 times [2024-06-28 01:17:45,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:45,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345792588] [2024-06-28 01:17:45,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:45,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:46,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:46,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:46,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345792588] [2024-06-28 01:17:46,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345792588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:46,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:46,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:46,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093327020] [2024-06-28 01:17:46,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:46,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:46,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:46,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:46,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:46,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:46,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 266 transitions, 3421 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 01:17:46,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:46,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:46,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:47,070 INFO L124 PetriNetUnfolderBase]: 1127/2136 cut-off events. [2024-06-28 01:17:47,070 INFO L125 PetriNetUnfolderBase]: For 114290/114290 co-relation queries the response was YES. [2024-06-28 01:17:47,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14268 conditions, 2136 events. 1127/2136 cut-off events. For 114290/114290 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 12910 event pairs, 164 based on Foata normal form. 2/1988 useless extension candidates. Maximal degree in co-relation 14140. Up to 1740 conditions per place. [2024-06-28 01:17:47,094 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 269 selfloop transitions, 22 changer transitions 0/300 dead transitions. [2024-06-28 01:17:47,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 300 transitions, 4155 flow [2024-06-28 01:17:47,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:47,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:47,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 01:17:47,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:17:47,095 INFO L175 Difference]: Start difference. First operand has 279 places, 266 transitions, 3421 flow. Second operand 10 states and 170 transitions. [2024-06-28 01:17:47,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 300 transitions, 4155 flow [2024-06-28 01:17:47,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 300 transitions, 4089 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 01:17:47,420 INFO L231 Difference]: Finished difference. Result has 281 places, 267 transitions, 3431 flow [2024-06-28 01:17:47,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3355, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3431, PETRI_PLACES=281, PETRI_TRANSITIONS=267} [2024-06-28 01:17:47,420 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 240 predicate places. [2024-06-28 01:17:47,420 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 267 transitions, 3431 flow [2024-06-28 01:17:47,420 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 01:17:47,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:47,421 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 01:17:47,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 01:17:47,421 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:47,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:47,422 INFO L85 PathProgramCache]: Analyzing trace with hash 359314386, now seen corresponding path program 4 times [2024-06-28 01:17:47,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:47,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480461980] [2024-06-28 01:17:47,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:47,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:48,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:48,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:48,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480461980] [2024-06-28 01:17:48,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480461980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:48,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:48,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:48,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836875663] [2024-06-28 01:17:48,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:48,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:48,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:48,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:48,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:48,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:48,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 267 transitions, 3431 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 01:17:48,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:48,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:48,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:49,255 INFO L124 PetriNetUnfolderBase]: 1144/2183 cut-off events. [2024-06-28 01:17:49,255 INFO L125 PetriNetUnfolderBase]: For 117025/117025 co-relation queries the response was YES. [2024-06-28 01:17:49,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14451 conditions, 2183 events. 1144/2183 cut-off events. For 117025/117025 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 13304 event pairs, 189 based on Foata normal form. 2/2031 useless extension candidates. Maximal degree in co-relation 14322. Up to 1801 conditions per place. [2024-06-28 01:17:49,280 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 263 selfloop transitions, 24 changer transitions 0/296 dead transitions. [2024-06-28 01:17:49,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 296 transitions, 4152 flow [2024-06-28 01:17:49,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:49,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:49,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:17:49,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-28 01:17:49,281 INFO L175 Difference]: Start difference. First operand has 281 places, 267 transitions, 3431 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:17:49,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 296 transitions, 4152 flow [2024-06-28 01:17:49,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 296 transitions, 4086 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 01:17:49,649 INFO L231 Difference]: Finished difference. Result has 284 places, 269 transitions, 3466 flow [2024-06-28 01:17:49,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3365, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3466, PETRI_PLACES=284, PETRI_TRANSITIONS=269} [2024-06-28 01:17:49,650 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 243 predicate places. [2024-06-28 01:17:49,650 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 269 transitions, 3466 flow [2024-06-28 01:17:49,650 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 01:17:49,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:49,651 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 01:17:49,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 01:17:49,651 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:49,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:49,651 INFO L85 PathProgramCache]: Analyzing trace with hash -974384862, now seen corresponding path program 5 times [2024-06-28 01:17:49,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:49,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250147590] [2024-06-28 01:17:49,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:49,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:50,745 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 01:17:50,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:50,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250147590] [2024-06-28 01:17:50,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250147590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:50,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:50,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:50,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128212975] [2024-06-28 01:17:50,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:50,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:50,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:50,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:50,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:50,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:50,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 269 transitions, 3466 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 01:17:50,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:50,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:50,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:51,411 INFO L124 PetriNetUnfolderBase]: 1161/2221 cut-off events. [2024-06-28 01:17:51,411 INFO L125 PetriNetUnfolderBase]: For 119936/119936 co-relation queries the response was YES. [2024-06-28 01:17:51,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14634 conditions, 2221 events. 1161/2221 cut-off events. For 119936/119936 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 13634 event pairs, 183 based on Foata normal form. 2/2066 useless extension candidates. Maximal degree in co-relation 14503. Up to 1805 conditions per place. [2024-06-28 01:17:51,436 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 269 selfloop transitions, 23 changer transitions 0/301 dead transitions. [2024-06-28 01:17:51,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 301 transitions, 4200 flow [2024-06-28 01:17:51,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:51,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:51,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 01:17:51,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-28 01:17:51,437 INFO L175 Difference]: Start difference. First operand has 284 places, 269 transitions, 3466 flow. Second operand 10 states and 167 transitions. [2024-06-28 01:17:51,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 301 transitions, 4200 flow [2024-06-28 01:17:51,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 301 transitions, 4132 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 01:17:51,826 INFO L231 Difference]: Finished difference. Result has 287 places, 270 transitions, 3480 flow [2024-06-28 01:17:51,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3398, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3480, PETRI_PLACES=287, PETRI_TRANSITIONS=270} [2024-06-28 01:17:51,827 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 246 predicate places. [2024-06-28 01:17:51,827 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 270 transitions, 3480 flow [2024-06-28 01:17:51,827 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 01:17:51,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:51,827 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 01:17:51,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 01:17:51,828 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:51,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:51,828 INFO L85 PathProgramCache]: Analyzing trace with hash -183593984, now seen corresponding path program 6 times [2024-06-28 01:17:51,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:51,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126603884] [2024-06-28 01:17:51,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:51,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:53,040 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 01:17:53,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:53,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126603884] [2024-06-28 01:17:53,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126603884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:53,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:53,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:53,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421167603] [2024-06-28 01:17:53,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:53,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:53,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:53,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:53,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:53,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:53,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 270 transitions, 3480 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 01:17:53,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:53,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:53,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:53,835 INFO L124 PetriNetUnfolderBase]: 1178/2263 cut-off events. [2024-06-28 01:17:53,835 INFO L125 PetriNetUnfolderBase]: For 122934/122934 co-relation queries the response was YES. [2024-06-28 01:17:53,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14819 conditions, 2263 events. 1178/2263 cut-off events. For 122934/122934 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 14075 event pairs, 199 based on Foata normal form. 2/2105 useless extension candidates. Maximal degree in co-relation 14687. Up to 1850 conditions per place. [2024-06-28 01:17:53,861 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 262 selfloop transitions, 27 changer transitions 0/298 dead transitions. [2024-06-28 01:17:53,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 298 transitions, 4196 flow [2024-06-28 01:17:53,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:53,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:53,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:17:53,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-28 01:17:53,863 INFO L175 Difference]: Start difference. First operand has 287 places, 270 transitions, 3480 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:17:53,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 298 transitions, 4196 flow [2024-06-28 01:17:54,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 298 transitions, 4124 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 01:17:54,239 INFO L231 Difference]: Finished difference. Result has 289 places, 271 transitions, 3500 flow [2024-06-28 01:17:54,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3408, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3500, PETRI_PLACES=289, PETRI_TRANSITIONS=271} [2024-06-28 01:17:54,240 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 248 predicate places. [2024-06-28 01:17:54,240 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 271 transitions, 3500 flow [2024-06-28 01:17:54,240 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 01:17:54,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:54,240 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 01:17:54,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 01:17:54,241 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:54,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:54,241 INFO L85 PathProgramCache]: Analyzing trace with hash -183587040, now seen corresponding path program 1 times [2024-06-28 01:17:54,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:54,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582597355] [2024-06-28 01:17:54,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:54,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:55,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:55,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582597355] [2024-06-28 01:17:55,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582597355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:55,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:55,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:17:55,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861600334] [2024-06-28 01:17:55,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:55,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:17:55,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:55,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:17:55,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:17:55,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:55,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 271 transitions, 3500 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:55,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:55,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:55,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:56,406 INFO L124 PetriNetUnfolderBase]: 1185/2273 cut-off events. [2024-06-28 01:17:56,406 INFO L125 PetriNetUnfolderBase]: For 121352/121352 co-relation queries the response was YES. [2024-06-28 01:17:56,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14843 conditions, 2273 events. 1185/2273 cut-off events. For 121352/121352 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 14111 event pairs, 199 based on Foata normal form. 1/2111 useless extension candidates. Maximal degree in co-relation 14710. Up to 1837 conditions per place. [2024-06-28 01:17:56,432 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 253 selfloop transitions, 35 changer transitions 0/297 dead transitions. [2024-06-28 01:17:56,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 297 transitions, 4414 flow [2024-06-28 01:17:56,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:56,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:56,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 01:17:56,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-28 01:17:56,434 INFO L175 Difference]: Start difference. First operand has 289 places, 271 transitions, 3500 flow. Second operand 10 states and 169 transitions. [2024-06-28 01:17:56,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 297 transitions, 4414 flow [2024-06-28 01:17:56,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 297 transitions, 4332 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 01:17:56,824 INFO L231 Difference]: Finished difference. Result has 291 places, 273 transitions, 3562 flow [2024-06-28 01:17:56,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3418, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3562, PETRI_PLACES=291, PETRI_TRANSITIONS=273} [2024-06-28 01:17:56,824 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 250 predicate places. [2024-06-28 01:17:56,824 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 273 transitions, 3562 flow [2024-06-28 01:17:56,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:56,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:56,825 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 01:17:56,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 01:17:56,825 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:56,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:56,825 INFO L85 PathProgramCache]: Analyzing trace with hash -183356400, now seen corresponding path program 2 times [2024-06-28 01:17:56,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:56,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342136786] [2024-06-28 01:17:56,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:56,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:58,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:58,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:58,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342136786] [2024-06-28 01:17:58,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342136786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:58,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:58,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:17:58,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355155014] [2024-06-28 01:17:58,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:58,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:17:58,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:58,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:17:58,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:17:58,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:17:58,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 273 transitions, 3562 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:58,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:58,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:17:58,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:58,811 INFO L124 PetriNetUnfolderBase]: 1192/2286 cut-off events. [2024-06-28 01:17:58,811 INFO L125 PetriNetUnfolderBase]: For 123289/123289 co-relation queries the response was YES. [2024-06-28 01:17:58,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14864 conditions, 2286 events. 1192/2286 cut-off events. For 123289/123289 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 14199 event pairs, 199 based on Foata normal form. 1/2122 useless extension candidates. Maximal degree in co-relation 14730. Up to 1866 conditions per place. [2024-06-28 01:17:58,837 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 257 selfloop transitions, 34 changer transitions 0/300 dead transitions. [2024-06-28 01:17:58,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 300 transitions, 4316 flow [2024-06-28 01:17:58,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:17:58,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:17:58,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-28 01:17:58,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-28 01:17:58,839 INFO L175 Difference]: Start difference. First operand has 291 places, 273 transitions, 3562 flow. Second operand 11 states and 178 transitions. [2024-06-28 01:17:58,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 300 transitions, 4316 flow [2024-06-28 01:17:59,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 300 transitions, 4122 flow, removed 36 selfloop flow, removed 10 redundant places. [2024-06-28 01:17:59,207 INFO L231 Difference]: Finished difference. Result has 292 places, 275 transitions, 3517 flow [2024-06-28 01:17:59,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3380, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3517, PETRI_PLACES=292, PETRI_TRANSITIONS=275} [2024-06-28 01:17:59,207 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 251 predicate places. [2024-06-28 01:17:59,207 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 275 transitions, 3517 flow [2024-06-28 01:17:59,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:59,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:59,208 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 01:17:59,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 01:17:59,208 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:59,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:59,208 INFO L85 PathProgramCache]: Analyzing trace with hash -183348030, now seen corresponding path program 3 times [2024-06-28 01:17:59,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:59,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361473152] [2024-06-28 01:17:59,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:59,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:00,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:00,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:00,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361473152] [2024-06-28 01:18:00,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361473152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:00,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:00,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:18:00,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615085805] [2024-06-28 01:18:00,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:00,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:18:00,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:00,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:18:00,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:18:00,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:18:00,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 275 transitions, 3517 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:00,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:00,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:18:00,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:01,152 INFO L124 PetriNetUnfolderBase]: 1190/2283 cut-off events. [2024-06-28 01:18:01,152 INFO L125 PetriNetUnfolderBase]: For 117253/117253 co-relation queries the response was YES. [2024-06-28 01:18:01,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14484 conditions, 2283 events. 1190/2283 cut-off events. For 117253/117253 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 14166 event pairs, 196 based on Foata normal form. 1/2119 useless extension candidates. Maximal degree in co-relation 14351. Up to 1798 conditions per place. [2024-06-28 01:18:01,181 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 242 selfloop transitions, 49 changer transitions 0/300 dead transitions. [2024-06-28 01:18:01,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 300 transitions, 4199 flow [2024-06-28 01:18:01,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:18:01,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:18:01,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 01:18:01,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-28 01:18:01,182 INFO L175 Difference]: Start difference. First operand has 292 places, 275 transitions, 3517 flow. Second operand 11 states and 180 transitions. [2024-06-28 01:18:01,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 300 transitions, 4199 flow [2024-06-28 01:18:01,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 300 transitions, 4044 flow, removed 45 selfloop flow, removed 9 redundant places. [2024-06-28 01:18:01,567 INFO L231 Difference]: Finished difference. Result has 294 places, 275 transitions, 3465 flow [2024-06-28 01:18:01,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3362, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3465, PETRI_PLACES=294, PETRI_TRANSITIONS=275} [2024-06-28 01:18:01,568 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 253 predicate places. [2024-06-28 01:18:01,568 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 275 transitions, 3465 flow [2024-06-28 01:18:01,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:01,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:01,569 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 01:18:01,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 01:18:01,569 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:01,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:01,569 INFO L85 PathProgramCache]: Analyzing trace with hash -183347720, now seen corresponding path program 1 times [2024-06-28 01:18:01,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:01,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890248434] [2024-06-28 01:18:01,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:01,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:02,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:02,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890248434] [2024-06-28 01:18:02,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890248434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:02,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:02,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:18:02,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010922664] [2024-06-28 01:18:02,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:02,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:18:02,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:02,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:18:02,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:18:02,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:18:02,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 275 transitions, 3465 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:02,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:02,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:18:02,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:03,680 INFO L124 PetriNetUnfolderBase]: 1278/2507 cut-off events. [2024-06-28 01:18:03,680 INFO L125 PetriNetUnfolderBase]: For 166412/166412 co-relation queries the response was YES. [2024-06-28 01:18:03,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15631 conditions, 2507 events. 1278/2507 cut-off events. For 166412/166412 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 16138 event pairs, 237 based on Foata normal form. 12/2342 useless extension candidates. Maximal degree in co-relation 15497. Up to 1871 conditions per place. [2024-06-28 01:18:03,709 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 269 selfloop transitions, 31 changer transitions 0/309 dead transitions. [2024-06-28 01:18:03,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 309 transitions, 4299 flow [2024-06-28 01:18:03,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:18:03,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:18:03,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-28 01:18:03,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-28 01:18:03,710 INFO L175 Difference]: Start difference. First operand has 294 places, 275 transitions, 3465 flow. Second operand 11 states and 186 transitions. [2024-06-28 01:18:03,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 309 transitions, 4299 flow [2024-06-28 01:18:04,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 309 transitions, 4051 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-28 01:18:04,146 INFO L231 Difference]: Finished difference. Result has 295 places, 276 transitions, 3323 flow [2024-06-28 01:18:04,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3217, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3323, PETRI_PLACES=295, PETRI_TRANSITIONS=276} [2024-06-28 01:18:04,147 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 254 predicate places. [2024-06-28 01:18:04,147 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 276 transitions, 3323 flow [2024-06-28 01:18:04,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:04,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:04,147 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 01:18:04,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 01:18:04,148 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:04,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:04,148 INFO L85 PathProgramCache]: Analyzing trace with hash 970848332, now seen corresponding path program 7 times [2024-06-28 01:18:04,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:04,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108636150] [2024-06-28 01:18:04,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:04,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:05,120 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 01:18:05,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:05,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108636150] [2024-06-28 01:18:05,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108636150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:05,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:05,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:05,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773791672] [2024-06-28 01:18:05,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:05,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:05,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:05,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:05,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:05,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:18:05,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 276 transitions, 3323 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 01:18:05,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:05,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:18:05,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:05,903 INFO L124 PetriNetUnfolderBase]: 1295/2550 cut-off events. [2024-06-28 01:18:05,903 INFO L125 PetriNetUnfolderBase]: For 131855/131855 co-relation queries the response was YES. [2024-06-28 01:18:05,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15656 conditions, 2550 events. 1295/2550 cut-off events. For 131855/131855 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 16599 event pairs, 242 based on Foata normal form. 2/2369 useless extension candidates. Maximal degree in co-relation 15522. Up to 2022 conditions per place. [2024-06-28 01:18:05,931 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 253 selfloop transitions, 38 changer transitions 0/300 dead transitions. [2024-06-28 01:18:05,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 300 transitions, 4027 flow [2024-06-28 01:18:05,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:05,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:05,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:18:05,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-28 01:18:05,932 INFO L175 Difference]: Start difference. First operand has 295 places, 276 transitions, 3323 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:18:05,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 300 transitions, 4027 flow [2024-06-28 01:18:06,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 300 transitions, 3948 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 01:18:06,321 INFO L231 Difference]: Finished difference. Result has 296 places, 277 transitions, 3360 flow [2024-06-28 01:18:06,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3244, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3360, PETRI_PLACES=296, PETRI_TRANSITIONS=277} [2024-06-28 01:18:06,330 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 255 predicate places. [2024-06-28 01:18:06,330 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 277 transitions, 3360 flow [2024-06-28 01:18:06,330 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 01:18:06,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:06,330 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 01:18:06,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 01:18:06,330 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:06,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:06,331 INFO L85 PathProgramCache]: Analyzing trace with hash 749203292, now seen corresponding path program 8 times [2024-06-28 01:18:06,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:06,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618847133] [2024-06-28 01:18:06,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:06,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:07,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:07,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:07,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618847133] [2024-06-28 01:18:07,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618847133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:07,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:07,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:07,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569122183] [2024-06-28 01:18:07,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:07,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:07,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:07,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:07,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:07,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:18:07,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 277 transitions, 3360 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 01:18:07,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:07,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:18:07,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:08,300 INFO L124 PetriNetUnfolderBase]: 1312/2590 cut-off events. [2024-06-28 01:18:08,300 INFO L125 PetriNetUnfolderBase]: For 134749/134749 co-relation queries the response was YES. [2024-06-28 01:18:08,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15920 conditions, 2590 events. 1312/2590 cut-off events. For 134749/134749 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 16932 event pairs, 245 based on Foata normal form. 2/2406 useless extension candidates. Maximal degree in co-relation 15785. Up to 2089 conditions per place. [2024-06-28 01:18:08,329 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 263 selfloop transitions, 29 changer transitions 0/301 dead transitions. [2024-06-28 01:18:08,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 301 transitions, 4068 flow [2024-06-28 01:18:08,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:08,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:08,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:18:08,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-28 01:18:08,330 INFO L175 Difference]: Start difference. First operand has 296 places, 277 transitions, 3360 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:18:08,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 301 transitions, 4068 flow [2024-06-28 01:18:08,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 301 transitions, 3962 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 01:18:08,772 INFO L231 Difference]: Finished difference. Result has 298 places, 278 transitions, 3354 flow [2024-06-28 01:18:08,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3254, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3354, PETRI_PLACES=298, PETRI_TRANSITIONS=278} [2024-06-28 01:18:08,772 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 257 predicate places. [2024-06-28 01:18:08,772 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 278 transitions, 3354 flow [2024-06-28 01:18:08,773 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 01:18:08,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:08,773 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 01:18:08,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 01:18:08,773 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:08,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:08,773 INFO L85 PathProgramCache]: Analyzing trace with hash 742947182, now seen corresponding path program 9 times [2024-06-28 01:18:08,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:08,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639959030] [2024-06-28 01:18:08,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:08,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:09,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:09,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639959030] [2024-06-28 01:18:09,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639959030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:09,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:09,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:09,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995524657] [2024-06-28 01:18:09,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:09,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:09,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:09,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:09,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:10,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:18:10,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 278 transitions, 3354 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 01:18:10,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:10,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:18:10,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:10,724 INFO L124 PetriNetUnfolderBase]: 1329/2629 cut-off events. [2024-06-28 01:18:10,724 INFO L125 PetriNetUnfolderBase]: For 137882/137882 co-relation queries the response was YES. [2024-06-28 01:18:10,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16057 conditions, 2629 events. 1329/2629 cut-off events. For 137882/137882 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 17298 event pairs, 254 based on Foata normal form. 2/2443 useless extension candidates. Maximal degree in co-relation 15921. Up to 2130 conditions per place. [2024-06-28 01:18:10,754 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 267 selfloop transitions, 27 changer transitions 0/303 dead transitions. [2024-06-28 01:18:10,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 303 transitions, 4082 flow [2024-06-28 01:18:10,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:10,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:10,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:18:10,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-28 01:18:10,757 INFO L175 Difference]: Start difference. First operand has 298 places, 278 transitions, 3354 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:18:10,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 303 transitions, 4082 flow [2024-06-28 01:18:11,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 303 transitions, 3990 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 01:18:11,230 INFO L231 Difference]: Finished difference. Result has 301 places, 280 transitions, 3379 flow [2024-06-28 01:18:11,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3264, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3379, PETRI_PLACES=301, PETRI_TRANSITIONS=280} [2024-06-28 01:18:11,231 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 260 predicate places. [2024-06-28 01:18:11,231 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 280 transitions, 3379 flow [2024-06-28 01:18:11,231 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 01:18:11,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:11,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:11,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 01:18:11,231 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:11,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:11,232 INFO L85 PathProgramCache]: Analyzing trace with hash 742769552, now seen corresponding path program 10 times [2024-06-28 01:18:11,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:11,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939645211] [2024-06-28 01:18:11,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:11,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:12,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:12,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:12,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939645211] [2024-06-28 01:18:12,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939645211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:12,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:12,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:12,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446195382] [2024-06-28 01:18:12,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:12,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:12,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:12,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:12,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:12,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:18:12,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 280 transitions, 3379 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 01:18:12,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:12,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:18:12,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:13,402 INFO L124 PetriNetUnfolderBase]: 1396/2764 cut-off events. [2024-06-28 01:18:13,402 INFO L125 PetriNetUnfolderBase]: For 141385/141385 co-relation queries the response was YES. [2024-06-28 01:18:13,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16798 conditions, 2764 events. 1396/2764 cut-off events. For 141385/141385 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 18445 event pairs, 254 based on Foata normal form. 2/2569 useless extension candidates. Maximal degree in co-relation 16660. Up to 2230 conditions per place. [2024-06-28 01:18:13,429 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 286 selfloop transitions, 34 changer transitions 0/329 dead transitions. [2024-06-28 01:18:13,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 329 transitions, 4459 flow [2024-06-28 01:18:13,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:18:13,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:18:13,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 01:18:13,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-28 01:18:13,431 INFO L175 Difference]: Start difference. First operand has 301 places, 280 transitions, 3379 flow. Second operand 11 states and 180 transitions. [2024-06-28 01:18:13,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 329 transitions, 4459 flow [2024-06-28 01:18:13,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 329 transitions, 4337 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 01:18:13,925 INFO L231 Difference]: Finished difference. Result has 311 places, 302 transitions, 3728 flow [2024-06-28 01:18:13,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3294, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3728, PETRI_PLACES=311, PETRI_TRANSITIONS=302} [2024-06-28 01:18:13,926 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 270 predicate places. [2024-06-28 01:18:13,926 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 302 transitions, 3728 flow [2024-06-28 01:18:13,926 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 01:18:13,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:13,927 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 01:18:13,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 01:18:13,927 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:13,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:13,927 INFO L85 PathProgramCache]: Analyzing trace with hash 971094286, now seen corresponding path program 4 times [2024-06-28 01:18:13,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:13,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872825669] [2024-06-28 01:18:13,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:13,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:15,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:15,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:15,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872825669] [2024-06-28 01:18:15,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872825669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:15,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:15,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:18:15,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759827534] [2024-06-28 01:18:15,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:15,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:18:15,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:15,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:18:15,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:18:15,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:18:15,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 302 transitions, 3728 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:15,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:15,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:18:15,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:16,109 INFO L124 PetriNetUnfolderBase]: 1412/2798 cut-off events. [2024-06-28 01:18:16,109 INFO L125 PetriNetUnfolderBase]: For 143226/143226 co-relation queries the response was YES. [2024-06-28 01:18:16,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17145 conditions, 2798 events. 1412/2798 cut-off events. For 143226/143226 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 18703 event pairs, 259 based on Foata normal form. 1/2597 useless extension candidates. Maximal degree in co-relation 17000. Up to 2071 conditions per place. [2024-06-28 01:18:16,140 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 240 selfloop transitions, 78 changer transitions 0/327 dead transitions. [2024-06-28 01:18:16,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 327 transitions, 4756 flow [2024-06-28 01:18:16,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:18:16,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:18:16,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-28 01:18:16,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-28 01:18:16,141 INFO L175 Difference]: Start difference. First operand has 311 places, 302 transitions, 3728 flow. Second operand 11 states and 184 transitions. [2024-06-28 01:18:16,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 327 transitions, 4756 flow [2024-06-28 01:18:16,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 327 transitions, 4693 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-28 01:18:16,653 INFO L231 Difference]: Finished difference. Result has 321 places, 306 transitions, 3965 flow [2024-06-28 01:18:16,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3665, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3965, PETRI_PLACES=321, PETRI_TRANSITIONS=306} [2024-06-28 01:18:16,654 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 280 predicate places. [2024-06-28 01:18:16,654 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 306 transitions, 3965 flow [2024-06-28 01:18:16,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:16,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:16,654 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 01:18:16,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 01:18:16,654 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:16,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:16,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1737017708, now seen corresponding path program 2 times [2024-06-28 01:18:16,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:16,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931393636] [2024-06-28 01:18:16,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:16,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:17,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:17,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:17,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931393636] [2024-06-28 01:18:17,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931393636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:17,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:17,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:18:17,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891416971] [2024-06-28 01:18:17,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:17,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:18:17,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:17,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:18:17,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:18:17,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:18:17,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 306 transitions, 3965 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:17,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:17,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:18:17,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:18,700 INFO L124 PetriNetUnfolderBase]: 1429/2838 cut-off events. [2024-06-28 01:18:18,700 INFO L125 PetriNetUnfolderBase]: For 151114/151114 co-relation queries the response was YES. [2024-06-28 01:18:18,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17478 conditions, 2838 events. 1429/2838 cut-off events. For 151114/151114 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 19068 event pairs, 268 based on Foata normal form. 2/2636 useless extension candidates. Maximal degree in co-relation 17330. Up to 2154 conditions per place. [2024-06-28 01:18:18,732 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 254 selfloop transitions, 66 changer transitions 0/329 dead transitions. [2024-06-28 01:18:18,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 329 transitions, 4725 flow [2024-06-28 01:18:18,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:18,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:18,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-28 01:18:18,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-28 01:18:18,733 INFO L175 Difference]: Start difference. First operand has 321 places, 306 transitions, 3965 flow. Second operand 10 states and 171 transitions. [2024-06-28 01:18:18,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 329 transitions, 4725 flow [2024-06-28 01:18:19,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 329 transitions, 4525 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 01:18:19,291 INFO L231 Difference]: Finished difference. Result has 323 places, 307 transitions, 3941 flow [2024-06-28 01:18:19,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3765, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3941, PETRI_PLACES=323, PETRI_TRANSITIONS=307} [2024-06-28 01:18:19,292 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 282 predicate places. [2024-06-28 01:18:19,292 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 307 transitions, 3941 flow [2024-06-28 01:18:19,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:19,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:19,292 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 01:18:19,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 01:18:19,292 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:19,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:19,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1515133348, now seen corresponding path program 5 times [2024-06-28 01:18:19,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:19,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827181635] [2024-06-28 01:18:19,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:19,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:20,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:20,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:20,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827181635] [2024-06-28 01:18:20,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827181635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:20,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:20,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:18:20,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15148695] [2024-06-28 01:18:20,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:20,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:18:20,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:20,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:18:20,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:18:20,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:18:20,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 307 transitions, 3941 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:20,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:20,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:18:20,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:21,709 INFO L124 PetriNetUnfolderBase]: 1436/2847 cut-off events. [2024-06-28 01:18:21,709 INFO L125 PetriNetUnfolderBase]: For 148806/148806 co-relation queries the response was YES. [2024-06-28 01:18:21,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17523 conditions, 2847 events. 1436/2847 cut-off events. For 148806/148806 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 19116 event pairs, 278 based on Foata normal form. 1/2642 useless extension candidates. Maximal degree in co-relation 17374. Up to 2265 conditions per place. [2024-06-28 01:18:21,744 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 266 selfloop transitions, 54 changer transitions 0/329 dead transitions. [2024-06-28 01:18:21,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 329 transitions, 4715 flow [2024-06-28 01:18:21,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:18:21,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:18:21,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-28 01:18:21,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-28 01:18:21,746 INFO L175 Difference]: Start difference. First operand has 323 places, 307 transitions, 3941 flow. Second operand 11 states and 179 transitions. [2024-06-28 01:18:21,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 329 transitions, 4715 flow [2024-06-28 01:18:22,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 329 transitions, 4549 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 01:18:22,317 INFO L231 Difference]: Finished difference. Result has 326 places, 309 transitions, 3950 flow [2024-06-28 01:18:22,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3775, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3950, PETRI_PLACES=326, PETRI_TRANSITIONS=309} [2024-06-28 01:18:22,317 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 285 predicate places. [2024-06-28 01:18:22,317 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 309 transitions, 3950 flow [2024-06-28 01:18:22,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:22,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:22,318 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 01:18:22,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 01:18:22,318 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:22,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:22,318 INFO L85 PathProgramCache]: Analyzing trace with hash -2009024428, now seen corresponding path program 6 times [2024-06-28 01:18:22,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:22,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3839932] [2024-06-28 01:18:22,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:22,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:23,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:23,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:23,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3839932] [2024-06-28 01:18:23,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3839932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:23,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:23,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:18:23,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264886687] [2024-06-28 01:18:23,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:23,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:18:23,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:23,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:18:23,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:18:24,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:18:24,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 309 transitions, 3950 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:24,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:24,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:18:24,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:24,938 INFO L124 PetriNetUnfolderBase]: 1443/2858 cut-off events. [2024-06-28 01:18:24,938 INFO L125 PetriNetUnfolderBase]: For 149537/149537 co-relation queries the response was YES. [2024-06-28 01:18:24,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17411 conditions, 2858 events. 1443/2858 cut-off events. For 149537/149537 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 19208 event pairs, 268 based on Foata normal form. 1/2650 useless extension candidates. Maximal degree in co-relation 17261. Up to 2178 conditions per place. [2024-06-28 01:18:24,972 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 249 selfloop transitions, 73 changer transitions 0/331 dead transitions. [2024-06-28 01:18:24,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 331 transitions, 4734 flow [2024-06-28 01:18:24,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:18:24,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:18:24,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 01:18:24,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-28 01:18:24,973 INFO L175 Difference]: Start difference. First operand has 326 places, 309 transitions, 3950 flow. Second operand 11 states and 180 transitions. [2024-06-28 01:18:24,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 331 transitions, 4734 flow [2024-06-28 01:18:25,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 331 transitions, 4583 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 01:18:25,514 INFO L231 Difference]: Finished difference. Result has 328 places, 311 transitions, 4018 flow [2024-06-28 01:18:25,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3799, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4018, PETRI_PLACES=328, PETRI_TRANSITIONS=311} [2024-06-28 01:18:25,515 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 287 predicate places. [2024-06-28 01:18:25,515 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 311 transitions, 4018 flow [2024-06-28 01:18:25,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:25,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:25,515 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 01:18:25,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 01:18:25,515 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:25,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:25,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1515363988, now seen corresponding path program 7 times [2024-06-28 01:18:25,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:25,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258202318] [2024-06-28 01:18:25,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:25,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:26,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:26,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:26,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258202318] [2024-06-28 01:18:26,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258202318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:26,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:26,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:18:26,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069933957] [2024-06-28 01:18:26,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:26,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:18:26,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:26,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:18:26,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:18:27,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:18:27,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 311 transitions, 4018 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:27,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:27,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:18:27,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:27,881 INFO L124 PetriNetUnfolderBase]: 1441/2855 cut-off events. [2024-06-28 01:18:27,881 INFO L125 PetriNetUnfolderBase]: For 146868/146868 co-relation queries the response was YES. [2024-06-28 01:18:27,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17301 conditions, 2855 events. 1441/2855 cut-off events. For 146868/146868 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 19195 event pairs, 268 based on Foata normal form. 1/2647 useless extension candidates. Maximal degree in co-relation 17150. Up to 2272 conditions per place. [2024-06-28 01:18:27,910 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 267 selfloop transitions, 55 changer transitions 0/331 dead transitions. [2024-06-28 01:18:27,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 331 transitions, 4738 flow [2024-06-28 01:18:27,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:18:27,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:18:27,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-28 01:18:27,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-28 01:18:27,911 INFO L175 Difference]: Start difference. First operand has 328 places, 311 transitions, 4018 flow. Second operand 11 states and 178 transitions. [2024-06-28 01:18:27,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 331 transitions, 4738 flow [2024-06-28 01:18:28,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 331 transitions, 4509 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-28 01:18:28,459 INFO L231 Difference]: Finished difference. Result has 330 places, 311 transitions, 3904 flow [2024-06-28 01:18:28,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3789, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3904, PETRI_PLACES=330, PETRI_TRANSITIONS=311} [2024-06-28 01:18:28,459 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 289 predicate places. [2024-06-28 01:18:28,459 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 311 transitions, 3904 flow [2024-06-28 01:18:28,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:28,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:28,460 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 01:18:28,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 01:18:28,460 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:28,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:28,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1515372668, now seen corresponding path program 3 times [2024-06-28 01:18:28,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:28,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724264236] [2024-06-28 01:18:28,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:28,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:29,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:29,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:29,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724264236] [2024-06-28 01:18:29,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724264236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:29,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:29,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:29,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520272614] [2024-06-28 01:18:29,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:29,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:29,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:29,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:29,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:29,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:18:29,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 311 transitions, 3904 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:29,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:29,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:18:29,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:30,186 INFO L124 PetriNetUnfolderBase]: 1529/3078 cut-off events. [2024-06-28 01:18:30,186 INFO L125 PetriNetUnfolderBase]: For 206667/206667 co-relation queries the response was YES. [2024-06-28 01:18:30,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18341 conditions, 3078 events. 1529/3078 cut-off events. For 206667/206667 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 21242 event pairs, 316 based on Foata normal form. 12/2870 useless extension candidates. Maximal degree in co-relation 18189. Up to 2280 conditions per place. [2024-06-28 01:18:30,223 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 278 selfloop transitions, 51 changer transitions 0/338 dead transitions. [2024-06-28 01:18:30,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 338 transitions, 4766 flow [2024-06-28 01:18:30,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:30,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:30,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 01:18:30,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-28 01:18:30,224 INFO L175 Difference]: Start difference. First operand has 330 places, 311 transitions, 3904 flow. Second operand 10 states and 172 transitions. [2024-06-28 01:18:30,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 338 transitions, 4766 flow [2024-06-28 01:18:30,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 338 transitions, 4612 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 01:18:30,885 INFO L231 Difference]: Finished difference. Result has 330 places, 312 transitions, 3900 flow [2024-06-28 01:18:30,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3750, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3900, PETRI_PLACES=330, PETRI_TRANSITIONS=312} [2024-06-28 01:18:30,885 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 289 predicate places. [2024-06-28 01:18:30,885 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 312 transitions, 3900 flow [2024-06-28 01:18:30,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:30,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:30,886 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 01:18:30,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 01:18:30,886 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:30,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:30,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1737009028, now seen corresponding path program 8 times [2024-06-28 01:18:30,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:30,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794361634] [2024-06-28 01:18:30,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:30,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:32,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:32,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:32,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794361634] [2024-06-28 01:18:32,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794361634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:32,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:32,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:18:32,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187471598] [2024-06-28 01:18:32,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:32,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:18:32,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:32,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:18:32,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:18:32,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:18:32,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 312 transitions, 3900 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:32,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:32,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:18:32,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:33,331 INFO L124 PetriNetUnfolderBase]: 1527/3075 cut-off events. [2024-06-28 01:18:33,332 INFO L125 PetriNetUnfolderBase]: For 151623/151623 co-relation queries the response was YES. [2024-06-28 01:18:33,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18203 conditions, 3075 events. 1527/3075 cut-off events. For 151623/151623 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 21225 event pairs, 316 based on Foata normal form. 1/2852 useless extension candidates. Maximal degree in co-relation 18050. Up to 2344 conditions per place. [2024-06-28 01:18:33,371 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 251 selfloop transitions, 72 changer transitions 0/332 dead transitions. [2024-06-28 01:18:33,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 332 transitions, 4622 flow [2024-06-28 01:18:33,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:18:33,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:18:33,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-28 01:18:33,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-28 01:18:33,373 INFO L175 Difference]: Start difference. First operand has 330 places, 312 transitions, 3900 flow. Second operand 11 states and 181 transitions. [2024-06-28 01:18:33,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 332 transitions, 4622 flow [2024-06-28 01:18:34,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 332 transitions, 4460 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-28 01:18:34,046 INFO L231 Difference]: Finished difference. Result has 333 places, 312 transitions, 3887 flow [2024-06-28 01:18:34,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3738, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3887, PETRI_PLACES=333, PETRI_TRANSITIONS=312} [2024-06-28 01:18:34,047 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 292 predicate places. [2024-06-28 01:18:34,047 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 312 transitions, 3887 flow [2024-06-28 01:18:34,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:34,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:34,047 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 01:18:34,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 01:18:34,048 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:34,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:34,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1745359808, now seen corresponding path program 4 times [2024-06-28 01:18:34,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:34,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224492083] [2024-06-28 01:18:34,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:34,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:34,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:34,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:34,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224492083] [2024-06-28 01:18:34,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224492083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:34,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:34,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:34,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159591318] [2024-06-28 01:18:34,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:34,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:34,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:34,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:34,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:34,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:18:34,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 312 transitions, 3887 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:34,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:34,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:18:34,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:35,781 INFO L124 PetriNetUnfolderBase]: 1564/3158 cut-off events. [2024-06-28 01:18:35,781 INFO L125 PetriNetUnfolderBase]: For 172895/172895 co-relation queries the response was YES. [2024-06-28 01:18:35,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19065 conditions, 3158 events. 1564/3158 cut-off events. For 172895/172895 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 21968 event pairs, 310 based on Foata normal form. 2/2941 useless extension candidates. Maximal degree in co-relation 18911. Up to 1983 conditions per place. [2024-06-28 01:18:35,822 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 263 selfloop transitions, 73 changer transitions 0/345 dead transitions. [2024-06-28 01:18:35,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 345 transitions, 5027 flow [2024-06-28 01:18:35,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:35,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:35,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-28 01:18:35,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810810810810811 [2024-06-28 01:18:35,823 INFO L175 Difference]: Start difference. First operand has 333 places, 312 transitions, 3887 flow. Second operand 10 states and 178 transitions. [2024-06-28 01:18:35,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 345 transitions, 5027 flow [2024-06-28 01:18:36,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 345 transitions, 4880 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 01:18:36,530 INFO L231 Difference]: Finished difference. Result has 334 places, 314 transitions, 3976 flow [2024-06-28 01:18:36,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3740, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3976, PETRI_PLACES=334, PETRI_TRANSITIONS=314} [2024-06-28 01:18:36,530 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 293 predicate places. [2024-06-28 01:18:36,530 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 314 transitions, 3976 flow [2024-06-28 01:18:36,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:36,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:36,531 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 01:18:36,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 01:18:36,531 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:36,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:36,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1745060968, now seen corresponding path program 9 times [2024-06-28 01:18:36,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:36,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042675096] [2024-06-28 01:18:36,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:36,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:37,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:37,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:37,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042675096] [2024-06-28 01:18:37,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042675096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:37,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:37,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:18:37,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519481590] [2024-06-28 01:18:37,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:37,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:18:37,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:37,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:18:37,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:18:37,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:18:37,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 314 transitions, 3976 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:37,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:37,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:18:37,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:38,672 INFO L124 PetriNetUnfolderBase]: 1577/3182 cut-off events. [2024-06-28 01:18:38,672 INFO L125 PetriNetUnfolderBase]: For 172048/172048 co-relation queries the response was YES. [2024-06-28 01:18:38,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19400 conditions, 3182 events. 1577/3182 cut-off events. For 172048/172048 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 22237 event pairs, 317 based on Foata normal form. 1/2950 useless extension candidates. Maximal degree in co-relation 19245. Up to 2377 conditions per place. [2024-06-28 01:18:38,713 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 245 selfloop transitions, 85 changer transitions 0/339 dead transitions. [2024-06-28 01:18:38,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 339 transitions, 5013 flow [2024-06-28 01:18:38,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:18:38,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:18:38,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 01:18:38,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-28 01:18:38,714 INFO L175 Difference]: Start difference. First operand has 334 places, 314 transitions, 3976 flow. Second operand 11 states and 183 transitions. [2024-06-28 01:18:38,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 339 transitions, 5013 flow [2024-06-28 01:18:39,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 339 transitions, 4865 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 01:18:39,463 INFO L231 Difference]: Finished difference. Result has 340 places, 318 transitions, 4110 flow [2024-06-28 01:18:39,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3830, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4110, PETRI_PLACES=340, PETRI_TRANSITIONS=318} [2024-06-28 01:18:39,463 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 299 predicate places. [2024-06-28 01:18:39,463 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 318 transitions, 4110 flow [2024-06-28 01:18:39,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:39,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:39,464 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 01:18:39,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 01:18:39,464 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:39,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:39,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1745349578, now seen corresponding path program 5 times [2024-06-28 01:18:39,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:39,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806323479] [2024-06-28 01:18:39,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:39,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:39,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:40,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:40,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:40,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806323479] [2024-06-28 01:18:40,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806323479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:40,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:40,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:40,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452514047] [2024-06-28 01:18:40,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:40,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:40,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:40,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:40,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:40,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:18:40,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 318 transitions, 4110 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:40,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:40,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:18:40,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:41,261 INFO L124 PetriNetUnfolderBase]: 1574/3177 cut-off events. [2024-06-28 01:18:41,261 INFO L125 PetriNetUnfolderBase]: For 165761/165761 co-relation queries the response was YES. [2024-06-28 01:18:41,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19071 conditions, 3177 events. 1574/3177 cut-off events. For 165761/165761 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 22125 event pairs, 322 based on Foata normal form. 2/2947 useless extension candidates. Maximal degree in co-relation 18913. Up to 2415 conditions per place. [2024-06-28 01:18:41,303 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 259 selfloop transitions, 72 changer transitions 0/340 dead transitions. [2024-06-28 01:18:41,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 340 transitions, 4854 flow [2024-06-28 01:18:41,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:41,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:41,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 01:18:41,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:18:41,304 INFO L175 Difference]: Start difference. First operand has 340 places, 318 transitions, 4110 flow. Second operand 10 states and 170 transitions. [2024-06-28 01:18:41,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 340 transitions, 4854 flow [2024-06-28 01:18:41,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 340 transitions, 4593 flow, removed 35 selfloop flow, removed 10 redundant places. [2024-06-28 01:18:41,947 INFO L231 Difference]: Finished difference. Result has 340 places, 318 transitions, 3998 flow [2024-06-28 01:18:41,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3849, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3998, PETRI_PLACES=340, PETRI_TRANSITIONS=318} [2024-06-28 01:18:41,947 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 299 predicate places. [2024-06-28 01:18:41,948 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 318 transitions, 3998 flow [2024-06-28 01:18:41,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:41,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:41,948 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 01:18:41,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 01:18:41,948 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:41,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:41,949 INFO L85 PathProgramCache]: Analyzing trace with hash -2000750218, now seen corresponding path program 10 times [2024-06-28 01:18:41,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:41,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726397043] [2024-06-28 01:18:41,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:41,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:43,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:43,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:43,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726397043] [2024-06-28 01:18:43,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726397043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:43,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:43,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:18:43,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829184207] [2024-06-28 01:18:43,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:43,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:18:43,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:43,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:18:43,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:18:43,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:18:43,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 318 transitions, 3998 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:43,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:43,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:18:43,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:43,999 INFO L124 PetriNetUnfolderBase]: 1570/3171 cut-off events. [2024-06-28 01:18:43,999 INFO L125 PetriNetUnfolderBase]: For 155133/155133 co-relation queries the response was YES. [2024-06-28 01:18:44,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18551 conditions, 3171 events. 1570/3171 cut-off events. For 155133/155133 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 22112 event pairs, 322 based on Foata normal form. 2/2940 useless extension candidates. Maximal degree in co-relation 18393. Up to 2324 conditions per place. [2024-06-28 01:18:44,041 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 229 selfloop transitions, 100 changer transitions 0/338 dead transitions. [2024-06-28 01:18:44,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 338 transitions, 4732 flow [2024-06-28 01:18:44,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:18:44,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:18:44,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 01:18:44,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-28 01:18:44,042 INFO L175 Difference]: Start difference. First operand has 340 places, 318 transitions, 3998 flow. Second operand 11 states and 183 transitions. [2024-06-28 01:18:44,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 338 transitions, 4732 flow [2024-06-28 01:18:44,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 338 transitions, 4464 flow, removed 56 selfloop flow, removed 9 redundant places. [2024-06-28 01:18:44,645 INFO L231 Difference]: Finished difference. Result has 343 places, 318 transitions, 3946 flow [2024-06-28 01:18:44,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3730, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3946, PETRI_PLACES=343, PETRI_TRANSITIONS=318} [2024-06-28 01:18:44,646 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 302 predicate places. [2024-06-28 01:18:44,646 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 318 transitions, 3946 flow [2024-06-28 01:18:44,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:44,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:44,647 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 01:18:44,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 01:18:44,647 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:44,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:44,647 INFO L85 PathProgramCache]: Analyzing trace with hash 961577780, now seen corresponding path program 11 times [2024-06-28 01:18:44,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:44,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245236441] [2024-06-28 01:18:44,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:44,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:45,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:45,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:45,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245236441] [2024-06-28 01:18:45,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245236441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:45,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:45,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:45,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175515343] [2024-06-28 01:18:45,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:45,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:45,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:45,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:45,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:45,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:18:45,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 318 transitions, 3946 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 01:18:45,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:45,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:18:45,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:46,536 INFO L124 PetriNetUnfolderBase]: 1587/3212 cut-off events. [2024-06-28 01:18:46,536 INFO L125 PetriNetUnfolderBase]: For 160302/160305 co-relation queries the response was YES. [2024-06-28 01:18:46,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18713 conditions, 3212 events. 1587/3212 cut-off events. For 160302/160305 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 22490 event pairs, 331 based on Foata normal form. 2/2976 useless extension candidates. Maximal degree in co-relation 18553. Up to 2522 conditions per place. [2024-06-28 01:18:46,577 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 276 selfloop transitions, 54 changer transitions 0/339 dead transitions. [2024-06-28 01:18:46,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 339 transitions, 4724 flow [2024-06-28 01:18:46,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:46,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:46,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 01:18:46,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-28 01:18:46,578 INFO L175 Difference]: Start difference. First operand has 343 places, 318 transitions, 3946 flow. Second operand 10 states and 167 transitions. [2024-06-28 01:18:46,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 339 transitions, 4724 flow [2024-06-28 01:18:47,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 339 transitions, 4463 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-28 01:18:47,295 INFO L231 Difference]: Finished difference. Result has 342 places, 319 transitions, 3841 flow [2024-06-28 01:18:47,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3685, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3841, PETRI_PLACES=342, PETRI_TRANSITIONS=319} [2024-06-28 01:18:47,296 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 301 predicate places. [2024-06-28 01:18:47,296 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 319 transitions, 3841 flow [2024-06-28 01:18:47,296 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 01:18:47,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:47,296 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 01:18:47,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 01:18:47,296 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:47,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:47,297 INFO L85 PathProgramCache]: Analyzing trace with hash 490057216, now seen corresponding path program 12 times [2024-06-28 01:18:47,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:47,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53701360] [2024-06-28 01:18:47,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:47,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:48,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:48,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:48,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53701360] [2024-06-28 01:18:48,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53701360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:48,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:48,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:48,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230248665] [2024-06-28 01:18:48,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:48,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:48,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:48,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:48,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:48,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:18:48,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 319 transitions, 3841 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 01:18:48,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:48,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:18:48,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:49,390 INFO L124 PetriNetUnfolderBase]: 1604/3251 cut-off events. [2024-06-28 01:18:49,390 INFO L125 PetriNetUnfolderBase]: For 160812/160815 co-relation queries the response was YES. [2024-06-28 01:18:49,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18755 conditions, 3251 events. 1604/3251 cut-off events. For 160812/160815 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 22873 event pairs, 344 based on Foata normal form. 2/3013 useless extension candidates. Maximal degree in co-relation 18596. Up to 2568 conditions per place. [2024-06-28 01:18:49,432 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 281 selfloop transitions, 50 changer transitions 0/340 dead transitions. [2024-06-28 01:18:49,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 340 transitions, 4623 flow [2024-06-28 01:18:49,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:49,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:49,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:18:49,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:18:49,433 INFO L175 Difference]: Start difference. First operand has 342 places, 319 transitions, 3841 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:18:49,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 340 transitions, 4623 flow [2024-06-28 01:18:50,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 340 transitions, 4477 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 01:18:50,203 INFO L231 Difference]: Finished difference. Result has 344 places, 320 transitions, 3845 flow [2024-06-28 01:18:50,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3695, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3845, PETRI_PLACES=344, PETRI_TRANSITIONS=320} [2024-06-28 01:18:50,204 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 303 predicate places. [2024-06-28 01:18:50,204 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 320 transitions, 3845 flow [2024-06-28 01:18:50,204 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 01:18:50,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:50,204 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 01:18:50,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 01:18:50,205 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:50,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:50,205 INFO L85 PathProgramCache]: Analyzing trace with hash 101513958, now seen corresponding path program 13 times [2024-06-28 01:18:50,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:50,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249324030] [2024-06-28 01:18:50,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:50,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:51,290 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 01:18:51,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:51,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249324030] [2024-06-28 01:18:51,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249324030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:51,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:51,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:51,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671576582] [2024-06-28 01:18:51,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:51,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:51,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:51,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:51,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:51,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:18:51,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 320 transitions, 3845 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 01:18:51,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:51,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:18:51,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:52,217 INFO L124 PetriNetUnfolderBase]: 1621/3291 cut-off events. [2024-06-28 01:18:52,217 INFO L125 PetriNetUnfolderBase]: For 164137/164140 co-relation queries the response was YES. [2024-06-28 01:18:52,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18908 conditions, 3291 events. 1621/3291 cut-off events. For 164137/164140 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 23249 event pairs, 347 based on Foata normal form. 2/3050 useless extension candidates. Maximal degree in co-relation 18748. Up to 2496 conditions per place. [2024-06-28 01:18:52,259 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 259 selfloop transitions, 73 changer transitions 0/341 dead transitions. [2024-06-28 01:18:52,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 341 transitions, 4631 flow [2024-06-28 01:18:52,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:52,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:52,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:18:52,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-28 01:18:52,261 INFO L175 Difference]: Start difference. First operand has 344 places, 320 transitions, 3845 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:18:52,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 341 transitions, 4631 flow [2024-06-28 01:18:52,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 341 transitions, 4491 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 01:18:52,918 INFO L231 Difference]: Finished difference. Result has 346 places, 321 transitions, 3903 flow [2024-06-28 01:18:52,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3705, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3903, PETRI_PLACES=346, PETRI_TRANSITIONS=321} [2024-06-28 01:18:52,918 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 305 predicate places. [2024-06-28 01:18:52,918 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 321 transitions, 3903 flow [2024-06-28 01:18:52,919 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 01:18:52,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:52,919 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 01:18:52,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 01:18:52,919 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:52,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:52,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1402821008, now seen corresponding path program 14 times [2024-06-28 01:18:52,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:52,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602256008] [2024-06-28 01:18:52,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:52,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:54,028 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 01:18:54,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:54,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602256008] [2024-06-28 01:18:54,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602256008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:54,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:54,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:54,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687398513] [2024-06-28 01:18:54,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:54,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:54,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:54,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:54,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:54,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:18:54,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 321 transitions, 3903 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 01:18:54,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:54,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:18:54,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:55,000 INFO L124 PetriNetUnfolderBase]: 1638/3331 cut-off events. [2024-06-28 01:18:55,001 INFO L125 PetriNetUnfolderBase]: For 167873/167876 co-relation queries the response was YES. [2024-06-28 01:18:55,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19150 conditions, 3331 events. 1638/3331 cut-off events. For 167873/167876 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 23617 event pairs, 346 based on Foata normal form. 2/3087 useless extension candidates. Maximal degree in co-relation 18989. Up to 2640 conditions per place. [2024-06-28 01:18:55,038 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 286 selfloop transitions, 48 changer transitions 0/343 dead transitions. [2024-06-28 01:18:55,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 343 transitions, 4706 flow [2024-06-28 01:18:55,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:55,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:55,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 01:18:55,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-28 01:18:55,040 INFO L175 Difference]: Start difference. First operand has 346 places, 321 transitions, 3903 flow. Second operand 10 states and 163 transitions. [2024-06-28 01:18:55,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 343 transitions, 4706 flow [2024-06-28 01:18:55,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 343 transitions, 4516 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 01:18:55,686 INFO L231 Difference]: Finished difference. Result has 349 places, 323 transitions, 3879 flow [2024-06-28 01:18:55,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3715, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3879, PETRI_PLACES=349, PETRI_TRANSITIONS=323} [2024-06-28 01:18:55,687 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 308 predicate places. [2024-06-28 01:18:55,687 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 323 transitions, 3879 flow [2024-06-28 01:18:55,687 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 01:18:55,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:55,687 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 01:18:55,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 01:18:55,687 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:55,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:55,688 INFO L85 PathProgramCache]: Analyzing trace with hash 483623476, now seen corresponding path program 15 times [2024-06-28 01:18:55,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:55,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098361224] [2024-06-28 01:18:55,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:55,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:57,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:57,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:57,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098361224] [2024-06-28 01:18:57,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098361224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:57,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:57,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:57,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347091178] [2024-06-28 01:18:57,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:57,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:57,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:57,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:57,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:57,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:18:57,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 323 transitions, 3879 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 01:18:57,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:57,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:18:57,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:58,073 INFO L124 PetriNetUnfolderBase]: 1655/3368 cut-off events. [2024-06-28 01:18:58,073 INFO L125 PetriNetUnfolderBase]: For 170801/170804 co-relation queries the response was YES. [2024-06-28 01:18:58,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19237 conditions, 3368 events. 1655/3368 cut-off events. For 170801/170804 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 23985 event pairs, 346 based on Foata normal form. 2/3122 useless extension candidates. Maximal degree in co-relation 19074. Up to 2645 conditions per place. [2024-06-28 01:18:58,120 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 292 selfloop transitions, 47 changer transitions 0/348 dead transitions. [2024-06-28 01:18:58,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 348 transitions, 4697 flow [2024-06-28 01:18:58,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:58,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:58,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:18:58,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-28 01:18:58,121 INFO L175 Difference]: Start difference. First operand has 349 places, 323 transitions, 3879 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:18:58,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 348 transitions, 4697 flow [2024-06-28 01:18:58,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 348 transitions, 4560 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 01:18:58,849 INFO L231 Difference]: Finished difference. Result has 352 places, 324 transitions, 3892 flow [2024-06-28 01:18:58,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3742, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3892, PETRI_PLACES=352, PETRI_TRANSITIONS=324} [2024-06-28 01:18:58,850 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 311 predicate places. [2024-06-28 01:18:58,850 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 324 transitions, 3892 flow [2024-06-28 01:18:58,850 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 01:18:58,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:58,850 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 01:18:58,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 01:18:58,850 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:58,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:58,851 INFO L85 PathProgramCache]: Analyzing trace with hash 961824044, now seen corresponding path program 6 times [2024-06-28 01:18:58,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:58,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48823850] [2024-06-28 01:18:58,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:58,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:59,790 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 01:18:59,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:59,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48823850] [2024-06-28 01:18:59,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48823850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:59,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:59,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:59,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86234690] [2024-06-28 01:18:59,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:59,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:59,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:59,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:59,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:59,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:18:59,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 324 transitions, 3892 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:59,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:59,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:18:59,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:00,776 INFO L124 PetriNetUnfolderBase]: 1672/3409 cut-off events. [2024-06-28 01:19:00,776 INFO L125 PetriNetUnfolderBase]: For 172582/172585 co-relation queries the response was YES. [2024-06-28 01:19:00,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19343 conditions, 3409 events. 1672/3409 cut-off events. For 172582/172585 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 24366 event pairs, 372 based on Foata normal form. 2/3161 useless extension candidates. Maximal degree in co-relation 19179. Up to 2634 conditions per place. [2024-06-28 01:19:00,820 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 274 selfloop transitions, 63 changer transitions 0/346 dead transitions. [2024-06-28 01:19:00,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 346 transitions, 4691 flow [2024-06-28 01:19:00,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:19:00,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:19:00,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 01:19:00,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-28 01:19:00,821 INFO L175 Difference]: Start difference. First operand has 352 places, 324 transitions, 3892 flow. Second operand 10 states and 172 transitions. [2024-06-28 01:19:00,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 346 transitions, 4691 flow [2024-06-28 01:19:01,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 346 transitions, 4551 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 01:19:01,483 INFO L231 Difference]: Finished difference. Result has 354 places, 325 transitions, 3926 flow [2024-06-28 01:19:01,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3752, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3926, PETRI_PLACES=354, PETRI_TRANSITIONS=325} [2024-06-28 01:19:01,483 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 313 predicate places. [2024-06-28 01:19:01,484 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 325 transitions, 3926 flow [2024-06-28 01:19:01,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:01,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:01,484 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 01:19:01,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 01:19:01,484 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:19:01,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:01,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1562238848, now seen corresponding path program 7 times [2024-06-28 01:19:01,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:01,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444649988] [2024-06-28 01:19:01,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:01,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:02,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:02,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:02,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444649988] [2024-06-28 01:19:02,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444649988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:02,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:02,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:19:02,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183615586] [2024-06-28 01:19:02,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:02,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:19:02,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:02,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:19:02,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:19:02,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:19:02,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 325 transitions, 3926 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:02,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:02,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:19:02,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:03,675 INFO L124 PetriNetUnfolderBase]: 1709/3495 cut-off events. [2024-06-28 01:19:03,675 INFO L125 PetriNetUnfolderBase]: For 190238/190238 co-relation queries the response was YES. [2024-06-28 01:19:03,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20150 conditions, 3495 events. 1709/3495 cut-off events. For 190238/190238 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 25096 event pairs, 379 based on Foata normal form. 2/3256 useless extension candidates. Maximal degree in co-relation 19985. Up to 2687 conditions per place. [2024-06-28 01:19:03,721 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 328 selfloop transitions, 21 changer transitions 0/358 dead transitions. [2024-06-28 01:19:03,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 358 transitions, 5048 flow [2024-06-28 01:19:03,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:19:03,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:19:03,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 01:19:03,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-28 01:19:03,722 INFO L175 Difference]: Start difference. First operand has 354 places, 325 transitions, 3926 flow. Second operand 11 states and 183 transitions. [2024-06-28 01:19:03,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 358 transitions, 5048 flow [2024-06-28 01:19:04,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 358 transitions, 4884 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 01:19:04,447 INFO L231 Difference]: Finished difference. Result has 357 places, 327 transitions, 3898 flow [2024-06-28 01:19:04,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3762, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3898, PETRI_PLACES=357, PETRI_TRANSITIONS=327} [2024-06-28 01:19:04,448 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 316 predicate places. [2024-06-28 01:19:04,448 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 327 transitions, 3898 flow [2024-06-28 01:19:04,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:04,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:04,448 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 01:19:04,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 01:19:04,448 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:19:04,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:04,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1550274398, now seen corresponding path program 8 times [2024-06-28 01:19:04,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:04,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208721442] [2024-06-28 01:19:04,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:04,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:05,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:05,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:05,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208721442] [2024-06-28 01:19:05,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208721442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:05,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:05,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:19:05,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243960596] [2024-06-28 01:19:05,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:05,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:19:05,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:05,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:19:05,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:19:05,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:19:05,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 327 transitions, 3898 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:05,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:05,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:19:05,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:06,861 INFO L124 PetriNetUnfolderBase]: 1726/3527 cut-off events. [2024-06-28 01:19:06,862 INFO L125 PetriNetUnfolderBase]: For 193570/193570 co-relation queries the response was YES. [2024-06-28 01:19:06,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20219 conditions, 3527 events. 1726/3527 cut-off events. For 193570/193570 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 25486 event pairs, 395 based on Foata normal form. 2/3278 useless extension candidates. Maximal degree in co-relation 20053. Up to 2784 conditions per place. [2024-06-28 01:19:06,904 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 323 selfloop transitions, 21 changer transitions 0/353 dead transitions. [2024-06-28 01:19:06,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 353 transitions, 4948 flow [2024-06-28 01:19:06,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:19:06,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:19:06,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:19:06,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-28 01:19:06,906 INFO L175 Difference]: Start difference. First operand has 357 places, 327 transitions, 3898 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:19:06,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 353 transitions, 4948 flow [2024-06-28 01:19:07,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 353 transitions, 4853 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 01:19:07,706 INFO L231 Difference]: Finished difference. Result has 360 places, 328 transitions, 3896 flow [2024-06-28 01:19:07,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3817, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3896, PETRI_PLACES=360, PETRI_TRANSITIONS=328} [2024-06-28 01:19:07,706 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 319 predicate places. [2024-06-28 01:19:07,706 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 328 transitions, 3896 flow [2024-06-28 01:19:07,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:07,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:07,707 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 01:19:07,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 01:19:07,707 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:19:07,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:07,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1630959742, now seen corresponding path program 11 times [2024-06-28 01:19:07,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:07,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124083519] [2024-06-28 01:19:07,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:07,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:09,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:09,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:09,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124083519] [2024-06-28 01:19:09,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124083519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:09,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:09,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:19:09,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375459751] [2024-06-28 01:19:09,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:09,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:19:09,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:09,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:19:09,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:19:09,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:19:09,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 328 transitions, 3896 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:09,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:09,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:19:09,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:10,394 INFO L124 PetriNetUnfolderBase]: 1733/3543 cut-off events. [2024-06-28 01:19:10,395 INFO L125 PetriNetUnfolderBase]: For 184383/184386 co-relation queries the response was YES. [2024-06-28 01:19:10,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19969 conditions, 3543 events. 1733/3543 cut-off events. For 184383/184386 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 25605 event pairs, 392 based on Foata normal form. 1/3283 useless extension candidates. Maximal degree in co-relation 19801. Up to 2751 conditions per place. [2024-06-28 01:19:10,438 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 272 selfloop transitions, 68 changer transitions 0/349 dead transitions. [2024-06-28 01:19:10,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 349 transitions, 4715 flow [2024-06-28 01:19:10,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:19:10,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:19:10,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-28 01:19:10,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-28 01:19:10,439 INFO L175 Difference]: Start difference. First operand has 360 places, 328 transitions, 3896 flow. Second operand 11 states and 182 transitions. [2024-06-28 01:19:10,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 349 transitions, 4715 flow [2024-06-28 01:19:11,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 349 transitions, 4647 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 01:19:11,435 INFO L231 Difference]: Finished difference. Result has 363 places, 331 transitions, 4042 flow [2024-06-28 01:19:11,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3828, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4042, PETRI_PLACES=363, PETRI_TRANSITIONS=331} [2024-06-28 01:19:11,436 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 322 predicate places. [2024-06-28 01:19:11,436 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 331 transitions, 4042 flow [2024-06-28 01:19:11,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:11,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:11,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:19:11,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 01:19:11,437 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:19:11,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:11,437 INFO L85 PathProgramCache]: Analyzing trace with hash 73224040, now seen corresponding path program 9 times [2024-06-28 01:19:11,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:11,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796534335] [2024-06-28 01:19:11,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:11,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:12,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:12,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:12,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796534335] [2024-06-28 01:19:12,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796534335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:12,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:12,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:19:12,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430300492] [2024-06-28 01:19:12,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:12,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:19:12,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:12,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:19:12,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:19:12,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:19:12,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 331 transitions, 4042 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:12,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:12,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:19:12,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:13,818 INFO L124 PetriNetUnfolderBase]: 1750/3583 cut-off events. [2024-06-28 01:19:13,819 INFO L125 PetriNetUnfolderBase]: For 195867/195870 co-relation queries the response was YES. [2024-06-28 01:19:13,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20327 conditions, 3583 events. 1750/3583 cut-off events. For 195867/195870 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 26004 event pairs, 392 based on Foata normal form. 2/3321 useless extension candidates. Maximal degree in co-relation 20158. Up to 2606 conditions per place. [2024-06-28 01:19:13,871 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 250 selfloop transitions, 95 changer transitions 0/354 dead transitions. [2024-06-28 01:19:13,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 354 transitions, 4862 flow [2024-06-28 01:19:13,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:19:13,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:19:13,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-28 01:19:13,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-28 01:19:13,872 INFO L175 Difference]: Start difference. First operand has 363 places, 331 transitions, 4042 flow. Second operand 11 states and 186 transitions. [2024-06-28 01:19:13,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 354 transitions, 4862 flow [2024-06-28 01:19:14,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 354 transitions, 4698 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 01:19:14,746 INFO L231 Difference]: Finished difference. Result has 368 places, 332 transitions, 4120 flow [2024-06-28 01:19:14,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3878, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4120, PETRI_PLACES=368, PETRI_TRANSITIONS=332} [2024-06-28 01:19:14,747 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 327 predicate places. [2024-06-28 01:19:14,747 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 332 transitions, 4120 flow [2024-06-28 01:19:14,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:14,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:14,747 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 01:19:14,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 01:19:14,747 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:19:14,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:14,748 INFO L85 PathProgramCache]: Analyzing trace with hash 739939684, now seen corresponding path program 12 times [2024-06-28 01:19:14,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:14,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934100946] [2024-06-28 01:19:14,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:14,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:16,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:16,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:16,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934100946] [2024-06-28 01:19:16,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934100946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:16,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:16,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:19:16,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123216081] [2024-06-28 01:19:16,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:16,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:19:16,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:16,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:19:16,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:19:16,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:19:16,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 332 transitions, 4120 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:16,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:16,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:19:16,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:17,409 INFO L124 PetriNetUnfolderBase]: 1757/3592 cut-off events. [2024-06-28 01:19:17,409 INFO L125 PetriNetUnfolderBase]: For 192611/192614 co-relation queries the response was YES. [2024-06-28 01:19:17,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20551 conditions, 3592 events. 1757/3592 cut-off events. For 192611/192614 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 26061 event pairs, 405 based on Foata normal form. 1/3328 useless extension candidates. Maximal degree in co-relation 20381. Up to 2837 conditions per place. [2024-06-28 01:19:17,456 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 286 selfloop transitions, 57 changer transitions 0/352 dead transitions. [2024-06-28 01:19:17,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 352 transitions, 4940 flow [2024-06-28 01:19:17,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:19:17,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:19:17,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-28 01:19:17,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-28 01:19:17,458 INFO L175 Difference]: Start difference. First operand has 368 places, 332 transitions, 4120 flow. Second operand 11 states and 178 transitions. [2024-06-28 01:19:17,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 352 transitions, 4940 flow [2024-06-28 01:19:18,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 352 transitions, 4760 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 01:19:18,270 INFO L231 Difference]: Finished difference. Result has 371 places, 334 transitions, 4127 flow [2024-06-28 01:19:18,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3940, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4127, PETRI_PLACES=371, PETRI_TRANSITIONS=334} [2024-06-28 01:19:18,270 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 330 predicate places. [2024-06-28 01:19:18,270 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 334 transitions, 4127 flow [2024-06-28 01:19:18,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:18,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:18,271 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 01:19:18,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 01:19:18,271 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:19:18,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:18,271 INFO L85 PathProgramCache]: Analyzing trace with hash 961584724, now seen corresponding path program 13 times [2024-06-28 01:19:18,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:18,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119462206] [2024-06-28 01:19:18,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:18,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:19,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:19,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:19,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119462206] [2024-06-28 01:19:19,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119462206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:19,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:19,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:19:19,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038102035] [2024-06-28 01:19:19,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:19,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:19:19,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:19,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:19:19,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:19:20,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:19:20,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 334 transitions, 4127 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:20,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:20,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:19:20,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:21,207 INFO L124 PetriNetUnfolderBase]: 1755/3590 cut-off events. [2024-06-28 01:19:21,207 INFO L125 PetriNetUnfolderBase]: For 185293/185296 co-relation queries the response was YES. [2024-06-28 01:19:21,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20047 conditions, 3590 events. 1755/3590 cut-off events. For 185293/185296 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 26006 event pairs, 395 based on Foata normal form. 1/3325 useless extension candidates. Maximal degree in co-relation 19876. Up to 2789 conditions per place. [2024-06-28 01:19:21,258 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 274 selfloop transitions, 69 changer transitions 0/352 dead transitions. [2024-06-28 01:19:21,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 352 transitions, 4883 flow [2024-06-28 01:19:21,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:19:21,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:19:21,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-28 01:19:21,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-28 01:19:21,260 INFO L175 Difference]: Start difference. First operand has 371 places, 334 transitions, 4127 flow. Second operand 11 states and 181 transitions. [2024-06-28 01:19:21,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 352 transitions, 4883 flow [2024-06-28 01:19:22,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 352 transitions, 4680 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-28 01:19:22,226 INFO L231 Difference]: Finished difference. Result has 373 places, 334 transitions, 4067 flow [2024-06-28 01:19:22,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3924, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4067, PETRI_PLACES=373, PETRI_TRANSITIONS=334} [2024-06-28 01:19:22,227 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 332 predicate places. [2024-06-28 01:19:22,227 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 334 transitions, 4067 flow [2024-06-28 01:19:22,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:22,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:22,227 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 01:19:22,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 01:19:22,227 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:19:22,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:22,228 INFO L85 PathProgramCache]: Analyzing trace with hash 740179004, now seen corresponding path program 10 times [2024-06-28 01:19:22,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:22,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106482037] [2024-06-28 01:19:22,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:22,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:23,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:23,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:23,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106482037] [2024-06-28 01:19:23,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106482037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:23,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:23,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:19:23,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20955900] [2024-06-28 01:19:23,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:23,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:19:23,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:23,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:19:23,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:19:23,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:19:23,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 334 transitions, 4067 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:23,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:23,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:19:23,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:24,338 INFO L124 PetriNetUnfolderBase]: 1843/3814 cut-off events. [2024-06-28 01:19:24,338 INFO L125 PetriNetUnfolderBase]: For 266534/266537 co-relation queries the response was YES. [2024-06-28 01:19:24,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21237 conditions, 3814 events. 1843/3814 cut-off events. For 266534/266537 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 28291 event pairs, 433 based on Foata normal form. 12/3548 useless extension candidates. Maximal degree in co-relation 21065. Up to 2842 conditions per place. [2024-06-28 01:19:24,383 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 296 selfloop transitions, 54 changer transitions 0/359 dead transitions. [2024-06-28 01:19:24,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 359 transitions, 4973 flow [2024-06-28 01:19:24,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:19:24,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:19:24,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-28 01:19:24,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-28 01:19:24,384 INFO L175 Difference]: Start difference. First operand has 373 places, 334 transitions, 4067 flow. Second operand 10 states and 171 transitions. [2024-06-28 01:19:24,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 359 transitions, 4973 flow [2024-06-28 01:19:25,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 359 transitions, 4819 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 01:19:25,237 INFO L231 Difference]: Finished difference. Result has 373 places, 335 transitions, 4077 flow [2024-06-28 01:19:25,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3913, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4077, PETRI_PLACES=373, PETRI_TRANSITIONS=335} [2024-06-28 01:19:25,237 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 332 predicate places. [2024-06-28 01:19:25,237 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 335 transitions, 4077 flow [2024-06-28 01:19:25,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:25,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:25,238 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 01:19:25,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 01:19:25,238 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:19:25,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:25,239 INFO L85 PathProgramCache]: Analyzing trace with hash 740170324, now seen corresponding path program 14 times [2024-06-28 01:19:25,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:25,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840834067] [2024-06-28 01:19:25,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:25,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:26,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:26,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:26,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840834067] [2024-06-28 01:19:26,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840834067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:26,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:26,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:19:26,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607382790] [2024-06-28 01:19:26,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:26,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:19:26,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:26,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:19:26,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:19:26,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:19:26,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 335 transitions, 4077 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:26,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:26,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:19:26,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:27,697 INFO L124 PetriNetUnfolderBase]: 1839/3807 cut-off events. [2024-06-28 01:19:27,697 INFO L125 PetriNetUnfolderBase]: For 189703/189706 co-relation queries the response was YES. [2024-06-28 01:19:27,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20917 conditions, 3807 events. 1839/3807 cut-off events. For 189703/189706 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 28252 event pairs, 443 based on Foata normal form. 2/3528 useless extension candidates. Maximal degree in co-relation 20744. Up to 2980 conditions per place. [2024-06-28 01:19:27,753 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 281 selfloop transitions, 63 changer transitions 0/353 dead transitions. [2024-06-28 01:19:27,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 353 transitions, 4835 flow [2024-06-28 01:19:27,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:19:27,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:19:27,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 01:19:27,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-28 01:19:27,754 INFO L175 Difference]: Start difference. First operand has 373 places, 335 transitions, 4077 flow. Second operand 11 states and 180 transitions. [2024-06-28 01:19:27,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 353 transitions, 4835 flow [2024-06-28 01:19:28,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 353 transitions, 4617 flow, removed 57 selfloop flow, removed 8 redundant places. [2024-06-28 01:19:28,818 INFO L231 Difference]: Finished difference. Result has 377 places, 335 transitions, 3998 flow [2024-06-28 01:19:28,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3859, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3998, PETRI_PLACES=377, PETRI_TRANSITIONS=335} [2024-06-28 01:19:28,819 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 336 predicate places. [2024-06-28 01:19:28,819 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 335 transitions, 3998 flow [2024-06-28 01:19:28,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:28,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:28,819 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 01:19:28,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 01:19:28,820 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:19:28,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:28,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1639310522, now seen corresponding path program 11 times [2024-06-28 01:19:28,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:28,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204923756] [2024-06-28 01:19:28,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:28,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:30,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:30,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:30,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204923756] [2024-06-28 01:19:30,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204923756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:30,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:30,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:19:30,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004670950] [2024-06-28 01:19:30,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:30,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:19:30,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:30,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:19:30,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:19:30,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:19:30,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 335 transitions, 3998 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:30,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:30,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:19:30,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:31,376 INFO L124 PetriNetUnfolderBase]: 1913/3977 cut-off events. [2024-06-28 01:19:31,377 INFO L125 PetriNetUnfolderBase]: For 213269/213272 co-relation queries the response was YES. [2024-06-28 01:19:31,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22081 conditions, 3977 events. 1913/3977 cut-off events. For 213269/213272 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 29939 event pairs, 473 based on Foata normal form. 2/3695 useless extension candidates. Maximal degree in co-relation 21906. Up to 2845 conditions per place. [2024-06-28 01:19:31,431 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 287 selfloop transitions, 71 changer transitions 0/367 dead transitions. [2024-06-28 01:19:31,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 367 transitions, 5208 flow [2024-06-28 01:19:31,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:19:31,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:19:31,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-28 01:19:31,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47665847665847666 [2024-06-28 01:19:31,432 INFO L175 Difference]: Start difference. First operand has 377 places, 335 transitions, 3998 flow. Second operand 11 states and 194 transitions. [2024-06-28 01:19:31,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 367 transitions, 5208 flow [2024-06-28 01:19:32,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 367 transitions, 5010 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-28 01:19:32,619 INFO L231 Difference]: Finished difference. Result has 376 places, 337 transitions, 4050 flow [2024-06-28 01:19:32,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3802, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4050, PETRI_PLACES=376, PETRI_TRANSITIONS=337} [2024-06-28 01:19:32,619 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 335 predicate places. [2024-06-28 01:19:32,619 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 337 transitions, 4050 flow [2024-06-28 01:19:32,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:32,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:32,621 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 01:19:32,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 01:19:32,621 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:19:32,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:32,622 INFO L85 PathProgramCache]: Analyzing trace with hash 970155914, now seen corresponding path program 12 times [2024-06-28 01:19:32,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:32,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322067036] [2024-06-28 01:19:32,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:32,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:33,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:33,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:33,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322067036] [2024-06-28 01:19:33,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322067036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:33,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:33,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:19:33,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967483599] [2024-06-28 01:19:33,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:33,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:19:33,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:33,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:19:33,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:19:33,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:19:33,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 337 transitions, 4050 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:33,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:33,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:19:33,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:34,912 INFO L124 PetriNetUnfolderBase]: 1910/3974 cut-off events. [2024-06-28 01:19:34,912 INFO L125 PetriNetUnfolderBase]: For 199410/199413 co-relation queries the response was YES. [2024-06-28 01:19:34,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21808 conditions, 3974 events. 1910/3974 cut-off events. For 199410/199413 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 29907 event pairs, 488 based on Foata normal form. 2/3688 useless extension candidates. Maximal degree in co-relation 21633. Up to 3087 conditions per place. [2024-06-28 01:19:34,966 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 283 selfloop transitions, 69 changer transitions 0/361 dead transitions. [2024-06-28 01:19:34,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 361 transitions, 4846 flow [2024-06-28 01:19:34,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:19:34,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:19:34,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 199 transitions. [2024-06-28 01:19:34,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44819819819819817 [2024-06-28 01:19:34,969 INFO L175 Difference]: Start difference. First operand has 376 places, 337 transitions, 4050 flow. Second operand 12 states and 199 transitions. [2024-06-28 01:19:34,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 361 transitions, 4846 flow [2024-06-28 01:19:36,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 361 transitions, 4698 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-28 01:19:36,026 INFO L231 Difference]: Finished difference. Result has 383 places, 337 transitions, 4044 flow [2024-06-28 01:19:36,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3902, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4044, PETRI_PLACES=383, PETRI_TRANSITIONS=337} [2024-06-28 01:19:36,027 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 342 predicate places. [2024-06-28 01:19:36,027 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 337 transitions, 4044 flow [2024-06-28 01:19:36,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:36,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:36,028 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 01:19:36,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 01:19:36,029 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:19:36,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:36,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1550264168, now seen corresponding path program 13 times [2024-06-28 01:19:36,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:36,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901859666] [2024-06-28 01:19:36,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:36,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:37,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:37,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:37,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901859666] [2024-06-28 01:19:37,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901859666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:37,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:37,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:19:37,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362924625] [2024-06-28 01:19:37,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:37,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:19:37,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:37,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:19:37,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:19:37,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:19:37,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 337 transitions, 4044 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:37,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:37,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:19:37,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:38,312 INFO L124 PetriNetUnfolderBase]: 1907/3971 cut-off events. [2024-06-28 01:19:38,312 INFO L125 PetriNetUnfolderBase]: For 179806/179806 co-relation queries the response was YES. [2024-06-28 01:19:38,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21195 conditions, 3971 events. 1907/3971 cut-off events. For 179806/179806 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 29946 event pairs, 503 based on Foata normal form. 2/3688 useless extension candidates. Maximal degree in co-relation 21018. Up to 3224 conditions per place. [2024-06-28 01:19:38,367 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 327 selfloop transitions, 21 changer transitions 0/357 dead transitions. [2024-06-28 01:19:38,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 357 transitions, 4816 flow [2024-06-28 01:19:38,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:19:38,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:19:38,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 01:19:38,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-28 01:19:38,368 INFO L175 Difference]: Start difference. First operand has 383 places, 337 transitions, 4044 flow. Second operand 10 states and 161 transitions. [2024-06-28 01:19:38,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 357 transitions, 4816 flow [2024-06-28 01:19:39,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 357 transitions, 4631 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 01:19:39,465 INFO L231 Difference]: Finished difference. Result has 384 places, 337 transitions, 3905 flow [2024-06-28 01:19:39,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3859, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3905, PETRI_PLACES=384, PETRI_TRANSITIONS=337} [2024-06-28 01:19:39,466 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 343 predicate places. [2024-06-28 01:19:39,466 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 337 transitions, 3905 flow [2024-06-28 01:19:39,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:39,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:39,466 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 01:19:39,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 01:19:39,466 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:19:39,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:39,467 INFO L85 PathProgramCache]: Analyzing trace with hash 719983410, now seen corresponding path program 15 times [2024-06-28 01:19:39,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:39,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620708811] [2024-06-28 01:19:39,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:39,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:41,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:41,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:41,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620708811] [2024-06-28 01:19:41,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620708811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:41,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:41,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:19:41,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270943994] [2024-06-28 01:19:41,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:41,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:19:41,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:41,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:19:41,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:19:41,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:19:41,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 337 transitions, 3905 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:41,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:41,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:19:41,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:42,414 INFO L124 PetriNetUnfolderBase]: 1905/3963 cut-off events. [2024-06-28 01:19:42,414 INFO L125 PetriNetUnfolderBase]: For 164357/164360 co-relation queries the response was YES. [2024-06-28 01:19:42,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20585 conditions, 3963 events. 1905/3963 cut-off events. For 164357/164360 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 29816 event pairs, 487 based on Foata normal form. 1/3675 useless extension candidates. Maximal degree in co-relation 20407. Up to 3088 conditions per place. [2024-06-28 01:19:42,472 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 275 selfloop transitions, 71 changer transitions 0/355 dead transitions. [2024-06-28 01:19:42,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 355 transitions, 4667 flow [2024-06-28 01:19:42,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:19:42,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:19:42,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 01:19:42,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-28 01:19:42,473 INFO L175 Difference]: Start difference. First operand has 384 places, 337 transitions, 3905 flow. Second operand 11 states and 180 transitions. [2024-06-28 01:19:42,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 355 transitions, 4667 flow [2024-06-28 01:19:43,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 355 transitions, 4577 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 01:19:43,615 INFO L231 Difference]: Finished difference. Result has 386 places, 337 transitions, 3962 flow [2024-06-28 01:19:43,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3815, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3962, PETRI_PLACES=386, PETRI_TRANSITIONS=337} [2024-06-28 01:19:43,616 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 345 predicate places. [2024-06-28 01:19:43,616 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 337 transitions, 3962 flow [2024-06-28 01:19:43,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:43,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:43,617 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 01:19:43,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 01:19:43,617 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:19:43,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:43,617 INFO L85 PathProgramCache]: Analyzing trace with hash 136975888, now seen corresponding path program 16 times [2024-06-28 01:19:43,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:43,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529283918] [2024-06-28 01:19:43,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:43,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:45,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:45,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:45,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529283918] [2024-06-28 01:19:45,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529283918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:45,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:45,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:19:45,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324812639] [2024-06-28 01:19:45,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:45,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:19:45,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:45,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:19:45,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:19:45,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:19:45,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 337 transitions, 3962 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:45,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:45,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:19:45,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:46,446 INFO L124 PetriNetUnfolderBase]: 1912/3978 cut-off events. [2024-06-28 01:19:46,446 INFO L125 PetriNetUnfolderBase]: For 167333/167333 co-relation queries the response was YES. [2024-06-28 01:19:46,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20807 conditions, 3978 events. 1912/3978 cut-off events. For 167333/167333 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 29982 event pairs, 503 based on Foata normal form. 1/3691 useless extension candidates. Maximal degree in co-relation 20628. Up to 3268 conditions per place. [2024-06-28 01:19:46,500 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 329 selfloop transitions, 19 changer transitions 0/357 dead transitions. [2024-06-28 01:19:46,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 357 transitions, 4794 flow [2024-06-28 01:19:46,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:19:46,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:19:46,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-28 01:19:46,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152334152334152 [2024-06-28 01:19:46,502 INFO L175 Difference]: Start difference. First operand has 386 places, 337 transitions, 3962 flow. Second operand 11 states and 169 transitions. [2024-06-28 01:19:46,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 357 transitions, 4794 flow [2024-06-28 01:19:47,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 357 transitions, 4629 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 01:19:47,489 INFO L231 Difference]: Finished difference. Result has 386 places, 339 transitions, 3910 flow [2024-06-28 01:19:47,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3797, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3910, PETRI_PLACES=386, PETRI_TRANSITIONS=339} [2024-06-28 01:19:47,489 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 345 predicate places. [2024-06-28 01:19:47,489 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 339 transitions, 3910 flow [2024-06-28 01:19:47,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:47,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:47,490 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 01:19:47,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 01:19:47,490 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:19:47,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:47,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1550263858, now seen corresponding path program 17 times [2024-06-28 01:19:47,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:47,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963625631] [2024-06-28 01:19:47,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:47,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:48,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:48,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:48,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963625631] [2024-06-28 01:19:48,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963625631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:48,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:48,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:19:48,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26351984] [2024-06-28 01:19:48,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:48,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:19:48,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:48,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:19:48,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:19:48,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:19:48,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 339 transitions, 3910 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:48,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:48,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:19:48,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:49,876 INFO L124 PetriNetUnfolderBase]: 1925/4000 cut-off events. [2024-06-28 01:19:49,877 INFO L125 PetriNetUnfolderBase]: For 170180/170180 co-relation queries the response was YES. [2024-06-28 01:19:49,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20855 conditions, 4000 events. 1925/4000 cut-off events. For 170180/170180 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 30084 event pairs, 503 based on Foata normal form. 1/3710 useless extension candidates. Maximal degree in co-relation 20675. Up to 3248 conditions per place. [2024-06-28 01:19:49,937 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 326 selfloop transitions, 29 changer transitions 0/364 dead transitions. [2024-06-28 01:19:49,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 364 transitions, 5036 flow [2024-06-28 01:19:49,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:19:49,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:19:49,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-06-28 01:19:49,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42567567567567566 [2024-06-28 01:19:49,938 INFO L175 Difference]: Start difference. First operand has 386 places, 339 transitions, 3910 flow. Second operand 12 states and 189 transitions. [2024-06-28 01:19:49,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 364 transitions, 5036 flow [2024-06-28 01:19:50,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 364 transitions, 4949 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 01:19:50,890 INFO L231 Difference]: Finished difference. Result has 390 places, 343 transitions, 3979 flow [2024-06-28 01:19:50,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3823, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3979, PETRI_PLACES=390, PETRI_TRANSITIONS=343} [2024-06-28 01:19:50,891 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 349 predicate places. [2024-06-28 01:19:50,891 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 343 transitions, 3979 flow [2024-06-28 01:19:50,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:50,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:50,891 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 01:19:50,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 01:19:50,891 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:19:50,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:50,892 INFO L85 PathProgramCache]: Analyzing trace with hash 72935740, now seen corresponding path program 14 times [2024-06-28 01:19:50,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:50,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729468220] [2024-06-28 01:19:50,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:50,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:52,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:52,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:52,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729468220] [2024-06-28 01:19:52,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729468220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:52,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:52,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:19:52,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528342928] [2024-06-28 01:19:52,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:52,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:19:52,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:52,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:19:52,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:19:52,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:19:52,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 343 transitions, 3979 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:52,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:52,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:19:52,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:53,184 INFO L124 PetriNetUnfolderBase]: 1942/4037 cut-off events. [2024-06-28 01:19:53,184 INFO L125 PetriNetUnfolderBase]: For 183905/183908 co-relation queries the response was YES. [2024-06-28 01:19:53,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21257 conditions, 4037 events. 1942/4037 cut-off events. For 183905/183908 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 30458 event pairs, 500 based on Foata normal form. 2/3744 useless extension candidates. Maximal degree in co-relation 21075. Up to 3029 conditions per place. [2024-06-28 01:19:53,243 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 270 selfloop transitions, 87 changer transitions 0/366 dead transitions. [2024-06-28 01:19:53,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 366 transitions, 4829 flow [2024-06-28 01:19:53,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:19:53,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:19:53,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-28 01:19:53,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-28 01:19:53,244 INFO L175 Difference]: Start difference. First operand has 390 places, 343 transitions, 3979 flow. Second operand 11 states and 184 transitions. [2024-06-28 01:19:53,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 366 transitions, 4829 flow [2024-06-28 01:19:54,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 366 transitions, 4725 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-28 01:19:54,248 INFO L231 Difference]: Finished difference. Result has 393 places, 344 transitions, 4107 flow [2024-06-28 01:19:54,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3875, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4107, PETRI_PLACES=393, PETRI_TRANSITIONS=344} [2024-06-28 01:19:54,248 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 352 predicate places. [2024-06-28 01:19:54,248 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 344 transitions, 4107 flow [2024-06-28 01:19:54,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:54,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:54,249 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 01:19:54,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 01:19:54,249 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:19:54,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:54,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1207676968, now seen corresponding path program 18 times [2024-06-28 01:19:54,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:54,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503354416] [2024-06-28 01:19:54,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:54,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:55,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:55,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:55,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503354416] [2024-06-28 01:19:55,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503354416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:55,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:55,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:19:55,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908894835] [2024-06-28 01:19:55,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:55,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:19:55,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:55,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:19:55,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:19:55,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:19:55,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 344 transitions, 4107 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:55,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:55,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:19:55,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:56,853 INFO L124 PetriNetUnfolderBase]: 1955/4061 cut-off events. [2024-06-28 01:19:56,853 INFO L125 PetriNetUnfolderBase]: For 179307/179307 co-relation queries the response was YES. [2024-06-28 01:19:56,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21567 conditions, 4061 events. 1955/4061 cut-off events. For 179307/179307 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 30681 event pairs, 516 based on Foata normal form. 1/3766 useless extension candidates. Maximal degree in co-relation 21384. Up to 3327 conditions per place. [2024-06-28 01:19:56,910 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 335 selfloop transitions, 22 changer transitions 0/366 dead transitions. [2024-06-28 01:19:56,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 366 transitions, 4978 flow [2024-06-28 01:19:56,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:19:56,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:19:56,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-28 01:19:56,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201474201474201 [2024-06-28 01:19:56,911 INFO L175 Difference]: Start difference. First operand has 393 places, 344 transitions, 4107 flow. Second operand 11 states and 171 transitions. [2024-06-28 01:19:56,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 366 transitions, 4978 flow [2024-06-28 01:19:58,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 366 transitions, 4756 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-28 01:19:58,011 INFO L231 Difference]: Finished difference. Result has 396 places, 348 transitions, 4035 flow [2024-06-28 01:19:58,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3885, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4035, PETRI_PLACES=396, PETRI_TRANSITIONS=348} [2024-06-28 01:19:58,011 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 355 predicate places. [2024-06-28 01:19:58,011 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 348 transitions, 4035 flow [2024-06-28 01:19:58,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:58,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:58,012 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 01:19:58,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 01:19:58,012 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:19:58,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:58,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1207965268, now seen corresponding path program 19 times [2024-06-28 01:19:58,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:58,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300495460] [2024-06-28 01:19:58,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:58,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:59,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:59,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:59,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300495460] [2024-06-28 01:19:59,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300495460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:59,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:59,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:19:59,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324115676] [2024-06-28 01:19:59,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:59,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:19:59,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:59,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:19:59,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:19:59,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:19:59,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 348 transitions, 4035 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:59,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:59,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:19:59,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:00,299 INFO L124 PetriNetUnfolderBase]: 1953/4058 cut-off events. [2024-06-28 01:20:00,299 INFO L125 PetriNetUnfolderBase]: For 168420/168420 co-relation queries the response was YES. [2024-06-28 01:20:00,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20907 conditions, 4058 events. 1953/4058 cut-off events. For 168420/168420 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 30663 event pairs, 516 based on Foata normal form. 1/3763 useless extension candidates. Maximal degree in co-relation 20722. Up to 3309 conditions per place. [2024-06-28 01:20:00,358 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 331 selfloop transitions, 26 changer transitions 0/366 dead transitions. [2024-06-28 01:20:00,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 366 transitions, 4819 flow [2024-06-28 01:20:00,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:20:00,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:20:00,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-28 01:20:00,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4250614250614251 [2024-06-28 01:20:00,359 INFO L175 Difference]: Start difference. First operand has 396 places, 348 transitions, 4035 flow. Second operand 11 states and 173 transitions. [2024-06-28 01:20:00,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 366 transitions, 4819 flow [2024-06-28 01:20:01,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 366 transitions, 4686 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-06-28 01:20:01,403 INFO L231 Difference]: Finished difference. Result has 399 places, 348 transitions, 3959 flow [2024-06-28 01:20:01,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3902, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3959, PETRI_PLACES=399, PETRI_TRANSITIONS=348} [2024-06-28 01:20:01,404 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 358 predicate places. [2024-06-28 01:20:01,404 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 348 transitions, 3959 flow [2024-06-28 01:20:01,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:01,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:01,404 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 01:20:01,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 01:20:01,404 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:20:01,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:01,405 INFO L85 PathProgramCache]: Analyzing trace with hash 73234270, now seen corresponding path program 15 times [2024-06-28 01:20:01,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:01,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407331631] [2024-06-28 01:20:01,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:01,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:02,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:02,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:02,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407331631] [2024-06-28 01:20:02,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407331631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:02,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:02,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:20:02,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981874314] [2024-06-28 01:20:02,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:02,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:20:02,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:02,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:20:02,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:20:02,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:20:02,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 348 transitions, 3959 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:02,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:02,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:20:02,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:03,357 INFO L124 PetriNetUnfolderBase]: 1970/4094 cut-off events. [2024-06-28 01:20:03,357 INFO L125 PetriNetUnfolderBase]: For 181699/181702 co-relation queries the response was YES. [2024-06-28 01:20:03,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21202 conditions, 4094 events. 1970/4094 cut-off events. For 181699/181702 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 30979 event pairs, 490 based on Foata normal form. 2/3798 useless extension candidates. Maximal degree in co-relation 21016. Up to 2866 conditions per place. [2024-06-28 01:20:03,416 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 254 selfloop transitions, 111 changer transitions 0/374 dead transitions. [2024-06-28 01:20:03,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 374 transitions, 5091 flow [2024-06-28 01:20:03,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:20:03,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:20:03,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-28 01:20:03,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810810810810811 [2024-06-28 01:20:03,417 INFO L175 Difference]: Start difference. First operand has 399 places, 348 transitions, 3959 flow. Second operand 10 states and 178 transitions. [2024-06-28 01:20:03,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 374 transitions, 5091 flow [2024-06-28 01:20:04,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 374 transitions, 4945 flow, removed 9 selfloop flow, removed 14 redundant places. [2024-06-28 01:20:04,555 INFO L231 Difference]: Finished difference. Result has 395 places, 349 transitions, 4093 flow [2024-06-28 01:20:04,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3813, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4093, PETRI_PLACES=395, PETRI_TRANSITIONS=349} [2024-06-28 01:20:04,556 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 354 predicate places. [2024-06-28 01:20:04,556 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 349 transitions, 4093 flow [2024-06-28 01:20:04,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:04,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:04,556 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 01:20:04,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 01:20:04,556 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:20:04,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:04,557 INFO L85 PathProgramCache]: Analyzing trace with hash 742071438, now seen corresponding path program 20 times [2024-06-28 01:20:04,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:04,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148485759] [2024-06-28 01:20:04,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:04,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:06,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:06,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:06,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148485759] [2024-06-28 01:20:06,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148485759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:06,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:06,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:20:06,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767166647] [2024-06-28 01:20:06,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:06,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:20:06,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:06,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:20:06,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:20:06,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:20:06,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 349 transitions, 4093 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:06,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:06,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:20:06,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:07,662 INFO L124 PetriNetUnfolderBase]: 1968/4093 cut-off events. [2024-06-28 01:20:07,663 INFO L125 PetriNetUnfolderBase]: For 168142/168145 co-relation queries the response was YES. [2024-06-28 01:20:07,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21299 conditions, 4093 events. 1968/4093 cut-off events. For 168142/168145 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 31002 event pairs, 503 based on Foata normal form. 1/3792 useless extension candidates. Maximal degree in co-relation 21115. Up to 2724 conditions per place. [2024-06-28 01:20:07,718 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 198 selfloop transitions, 161 changer transitions 0/368 dead transitions. [2024-06-28 01:20:07,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 368 transitions, 5141 flow [2024-06-28 01:20:07,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:20:07,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:20:07,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-28 01:20:07,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-28 01:20:07,719 INFO L175 Difference]: Start difference. First operand has 395 places, 349 transitions, 4093 flow. Second operand 11 states and 189 transitions. [2024-06-28 01:20:07,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 368 transitions, 5141 flow [2024-06-28 01:20:08,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 368 transitions, 4706 flow, removed 58 selfloop flow, removed 11 redundant places. [2024-06-28 01:20:08,604 INFO L231 Difference]: Finished difference. Result has 395 places, 349 transitions, 3985 flow [2024-06-28 01:20:08,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3658, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3985, PETRI_PLACES=395, PETRI_TRANSITIONS=349} [2024-06-28 01:20:08,604 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 354 predicate places. [2024-06-28 01:20:08,604 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 349 transitions, 3985 flow [2024-06-28 01:20:08,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:08,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:08,605 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 01:20:08,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 01:20:08,605 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:20:08,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:08,605 INFO L85 PathProgramCache]: Analyzing trace with hash 64883490, now seen corresponding path program 21 times [2024-06-28 01:20:08,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:08,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110631004] [2024-06-28 01:20:08,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:08,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:10,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:10,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:10,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110631004] [2024-06-28 01:20:10,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110631004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:10,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:10,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:20:10,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167657562] [2024-06-28 01:20:10,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:10,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:20:10,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:10,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:20:10,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:20:10,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:20:10,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 349 transitions, 3985 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:10,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:10,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:20:10,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:11,467 INFO L124 PetriNetUnfolderBase]: 1975/4103 cut-off events. [2024-06-28 01:20:11,467 INFO L125 PetriNetUnfolderBase]: For 163384/163387 co-relation queries the response was YES. [2024-06-28 01:20:11,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20619 conditions, 4103 events. 1975/4103 cut-off events. For 163384/163387 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 31055 event pairs, 503 based on Foata normal form. 1/3800 useless extension candidates. Maximal degree in co-relation 20438. Up to 2732 conditions per place. [2024-06-28 01:20:11,523 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 196 selfloop transitions, 165 changer transitions 0/370 dead transitions. [2024-06-28 01:20:11,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 370 transitions, 5105 flow [2024-06-28 01:20:11,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:20:11,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:20:11,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-28 01:20:11,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-28 01:20:11,524 INFO L175 Difference]: Start difference. First operand has 395 places, 349 transitions, 3985 flow. Second operand 11 states and 188 transitions. [2024-06-28 01:20:11,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 370 transitions, 5105 flow [2024-06-28 01:20:12,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 370 transitions, 4770 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 01:20:12,498 INFO L231 Difference]: Finished difference. Result has 396 places, 351 transitions, 4051 flow [2024-06-28 01:20:12,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3654, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4051, PETRI_PLACES=396, PETRI_TRANSITIONS=351} [2024-06-28 01:20:12,508 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 355 predicate places. [2024-06-28 01:20:12,508 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 351 transitions, 4051 flow [2024-06-28 01:20:12,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:12,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:12,509 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 01:20:12,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 01:20:12,509 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:20:12,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:12,509 INFO L85 PathProgramCache]: Analyzing trace with hash 64892170, now seen corresponding path program 16 times [2024-06-28 01:20:12,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:12,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111908885] [2024-06-28 01:20:12,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:12,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:13,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:13,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:13,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111908885] [2024-06-28 01:20:13,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111908885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:13,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:13,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:20:13,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303239219] [2024-06-28 01:20:13,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:13,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:20:13,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:13,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:20:13,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:20:13,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:20:13,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 351 transitions, 4051 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:13,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:13,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:20:13,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:14,655 INFO L124 PetriNetUnfolderBase]: 1972/4098 cut-off events. [2024-06-28 01:20:14,656 INFO L125 PetriNetUnfolderBase]: For 156830/156833 co-relation queries the response was YES. [2024-06-28 01:20:14,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20333 conditions, 4098 events. 1972/4098 cut-off events. For 156830/156833 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 31026 event pairs, 502 based on Foata normal form. 2/3797 useless extension candidates. Maximal degree in co-relation 20151. Up to 3078 conditions per place. [2024-06-28 01:20:14,718 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 276 selfloop transitions, 88 changer transitions 0/373 dead transitions. [2024-06-28 01:20:14,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 373 transitions, 4863 flow [2024-06-28 01:20:14,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:20:14,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:20:14,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 01:20:14,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-28 01:20:14,719 INFO L175 Difference]: Start difference. First operand has 396 places, 351 transitions, 4051 flow. Second operand 11 states and 183 transitions. [2024-06-28 01:20:14,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 373 transitions, 4863 flow [2024-06-28 01:20:15,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 373 transitions, 4453 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-28 01:20:15,752 INFO L231 Difference]: Finished difference. Result has 398 places, 351 transitions, 3821 flow [2024-06-28 01:20:15,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3641, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3821, PETRI_PLACES=398, PETRI_TRANSITIONS=351} [2024-06-28 01:20:15,753 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 357 predicate places. [2024-06-28 01:20:15,753 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 351 transitions, 3821 flow [2024-06-28 01:20:15,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:15,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:15,753 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 01:20:15,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 01:20:15,754 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:20:15,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:15,754 INFO L85 PathProgramCache]: Analyzing trace with hash 64652850, now seen corresponding path program 22 times [2024-06-28 01:20:15,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:15,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812655705] [2024-06-28 01:20:15,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:15,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:17,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:17,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:17,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812655705] [2024-06-28 01:20:17,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812655705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:17,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:17,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:20:17,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358912634] [2024-06-28 01:20:17,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:17,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:20:17,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:17,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:20:17,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:20:17,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:20:17,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 351 transitions, 3821 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:17,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:17,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:20:17,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:18,856 INFO L124 PetriNetUnfolderBase]: 1970/4095 cut-off events. [2024-06-28 01:20:18,856 INFO L125 PetriNetUnfolderBase]: For 137466/137469 co-relation queries the response was YES. [2024-06-28 01:20:18,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19557 conditions, 4095 events. 1970/4095 cut-off events. For 137466/137469 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 31031 event pairs, 499 based on Foata normal form. 1/3791 useless extension candidates. Maximal degree in co-relation 19374. Up to 2944 conditions per place. [2024-06-28 01:20:18,913 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 244 selfloop transitions, 116 changer transitions 0/369 dead transitions. [2024-06-28 01:20:18,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 369 transitions, 4611 flow [2024-06-28 01:20:18,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:20:18,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:20:18,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-28 01:20:18,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-28 01:20:18,914 INFO L175 Difference]: Start difference. First operand has 398 places, 351 transitions, 3821 flow. Second operand 11 states and 182 transitions. [2024-06-28 01:20:18,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 369 transitions, 4611 flow [2024-06-28 01:20:19,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 369 transitions, 4377 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-28 01:20:19,776 INFO L231 Difference]: Finished difference. Result has 399 places, 351 transitions, 3824 flow [2024-06-28 01:20:19,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3587, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3824, PETRI_PLACES=399, PETRI_TRANSITIONS=351} [2024-06-28 01:20:19,777 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 358 predicate places. [2024-06-28 01:20:19,777 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 351 transitions, 3824 flow [2024-06-28 01:20:19,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:19,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:19,777 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 01:20:19,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 01:20:19,778 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:20:19,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:19,779 INFO L85 PathProgramCache]: Analyzing trace with hash 125940280, now seen corresponding path program 16 times [2024-06-28 01:20:19,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:19,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795024100] [2024-06-28 01:20:19,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:19,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:20,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:20,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:20,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795024100] [2024-06-28 01:20:20,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795024100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:20,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:20,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:20:20,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609747399] [2024-06-28 01:20:20,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:20,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:20:20,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:20,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:20:20,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:20:21,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:20:21,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 351 transitions, 3824 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 01:20:21,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:21,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:20:21,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:21,966 INFO L124 PetriNetUnfolderBase]: 2000/4162 cut-off events. [2024-06-28 01:20:21,966 INFO L125 PetriNetUnfolderBase]: For 129574/129574 co-relation queries the response was YES. [2024-06-28 01:20:22,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19627 conditions, 4162 events. 2000/4162 cut-off events. For 129574/129574 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 31694 event pairs, 491 based on Foata normal form. 2/3860 useless extension candidates. Maximal degree in co-relation 19443. Up to 3292 conditions per place. [2024-06-28 01:20:22,027 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 334 selfloop transitions, 49 changer transitions 0/392 dead transitions. [2024-06-28 01:20:22,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 392 transitions, 4914 flow [2024-06-28 01:20:22,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:20:22,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:20:22,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 01:20:22,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-28 01:20:22,028 INFO L175 Difference]: Start difference. First operand has 399 places, 351 transitions, 3824 flow. Second operand 11 states and 183 transitions. [2024-06-28 01:20:22,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 392 transitions, 4914 flow [2024-06-28 01:20:22,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 392 transitions, 4597 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 01:20:22,890 INFO L231 Difference]: Finished difference. Result has 402 places, 363 transitions, 3891 flow [2024-06-28 01:20:22,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3523, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3891, PETRI_PLACES=402, PETRI_TRANSITIONS=363} [2024-06-28 01:20:22,891 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 361 predicate places. [2024-06-28 01:20:22,891 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 363 transitions, 3891 flow [2024-06-28 01:20:22,891 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 01:20:22,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:22,892 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 01:20:22,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 01:20:22,892 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:20:22,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:22,893 INFO L85 PathProgramCache]: Analyzing trace with hash -59600311, now seen corresponding path program 1 times [2024-06-28 01:20:22,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:22,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439575946] [2024-06-28 01:20:22,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:22,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:23,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:23,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:23,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439575946] [2024-06-28 01:20:23,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439575946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:23,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:23,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:20:23,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352053427] [2024-06-28 01:20:23,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:23,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:20:23,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:23,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:20:23,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:20:23,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:20:23,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 363 transitions, 3891 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:23,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:23,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:20:23,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:24,986 INFO L124 PetriNetUnfolderBase]: 2054/4270 cut-off events. [2024-06-28 01:20:24,986 INFO L125 PetriNetUnfolderBase]: For 182899/182899 co-relation queries the response was YES. [2024-06-28 01:20:25,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19888 conditions, 4270 events. 2054/4270 cut-off events. For 182899/182899 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 32720 event pairs, 455 based on Foata normal form. 8/3994 useless extension candidates. Maximal degree in co-relation 19701. Up to 3237 conditions per place. [2024-06-28 01:20:25,046 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 365 selfloop transitions, 32 changer transitions 0/406 dead transitions. [2024-06-28 01:20:25,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 406 transitions, 4889 flow [2024-06-28 01:20:25,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:20:25,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:20:25,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-28 01:20:25,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-06-28 01:20:25,047 INFO L175 Difference]: Start difference. First operand has 402 places, 363 transitions, 3891 flow. Second operand 11 states and 191 transitions. [2024-06-28 01:20:25,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 406 transitions, 4889 flow [2024-06-28 01:20:26,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 406 transitions, 4751 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 01:20:26,235 INFO L231 Difference]: Finished difference. Result has 405 places, 363 transitions, 3824 flow [2024-06-28 01:20:26,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3757, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3824, PETRI_PLACES=405, PETRI_TRANSITIONS=363} [2024-06-28 01:20:26,235 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 364 predicate places. [2024-06-28 01:20:26,235 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 363 transitions, 3824 flow [2024-06-28 01:20:26,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:26,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:26,236 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 01:20:26,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 01:20:26,236 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:20:26,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:26,237 INFO L85 PathProgramCache]: Analyzing trace with hash -156384435, now seen corresponding path program 2 times [2024-06-28 01:20:26,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:26,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054933700] [2024-06-28 01:20:26,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:26,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:27,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:27,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:27,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054933700] [2024-06-28 01:20:27,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054933700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:27,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:27,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:20:27,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838285736] [2024-06-28 01:20:27,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:27,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:20:27,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:27,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:20:27,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:20:27,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:20:27,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 363 transitions, 3824 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:27,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:27,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:20:27,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:28,828 INFO L124 PetriNetUnfolderBase]: 2071/4318 cut-off events. [2024-06-28 01:20:28,829 INFO L125 PetriNetUnfolderBase]: For 131802/131802 co-relation queries the response was YES. [2024-06-28 01:20:28,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19840 conditions, 4318 events. 2071/4318 cut-off events. For 131802/131802 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 33274 event pairs, 528 based on Foata normal form. 2/4010 useless extension candidates. Maximal degree in co-relation 19652. Up to 3446 conditions per place. [2024-06-28 01:20:28,891 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 363 selfloop transitions, 30 changer transitions 0/402 dead transitions. [2024-06-28 01:20:28,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 402 transitions, 4784 flow [2024-06-28 01:20:28,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:20:28,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:20:28,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-28 01:20:28,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:20:28,893 INFO L175 Difference]: Start difference. First operand has 405 places, 363 transitions, 3824 flow. Second operand 11 states and 187 transitions. [2024-06-28 01:20:28,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 402 transitions, 4784 flow [2024-06-28 01:20:29,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 402 transitions, 4721 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:20:30,000 INFO L231 Difference]: Finished difference. Result has 407 places, 364 transitions, 3855 flow [2024-06-28 01:20:30,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3761, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3855, PETRI_PLACES=407, PETRI_TRANSITIONS=364} [2024-06-28 01:20:30,001 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 366 predicate places. [2024-06-28 01:20:30,001 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 364 transitions, 3855 flow [2024-06-28 01:20:30,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:30,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:30,001 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 01:20:30,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 01:20:30,001 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:20:30,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:30,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1275056043, now seen corresponding path program 3 times [2024-06-28 01:20:30,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:30,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049595060] [2024-06-28 01:20:30,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:30,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:31,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:31,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:31,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049595060] [2024-06-28 01:20:31,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049595060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:31,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:31,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:20:31,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679551843] [2024-06-28 01:20:31,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:31,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:20:31,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:31,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:20:31,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:20:31,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:20:31,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 364 transitions, 3855 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:31,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:31,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:20:31,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:32,482 INFO L124 PetriNetUnfolderBase]: 2142/4510 cut-off events. [2024-06-28 01:20:32,482 INFO L125 PetriNetUnfolderBase]: For 207872/207872 co-relation queries the response was YES. [2024-06-28 01:20:32,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20850 conditions, 4510 events. 2142/4510 cut-off events. For 207872/207872 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 35305 event pairs, 611 based on Foata normal form. 10/4198 useless extension candidates. Maximal degree in co-relation 20661. Up to 3502 conditions per place. [2024-06-28 01:20:32,547 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 357 selfloop transitions, 32 changer transitions 0/398 dead transitions. [2024-06-28 01:20:32,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 398 transitions, 4835 flow [2024-06-28 01:20:32,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:20:32,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:20:32,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-28 01:20:32,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 01:20:32,549 INFO L175 Difference]: Start difference. First operand has 407 places, 364 transitions, 3855 flow. Second operand 11 states and 185 transitions. [2024-06-28 01:20:32,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 398 transitions, 4835 flow [2024-06-28 01:20:33,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 398 transitions, 4751 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 01:20:33,723 INFO L231 Difference]: Finished difference. Result has 409 places, 364 transitions, 3840 flow [2024-06-28 01:20:33,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3771, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3840, PETRI_PLACES=409, PETRI_TRANSITIONS=364} [2024-06-28 01:20:33,723 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 368 predicate places. [2024-06-28 01:20:33,723 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 364 transitions, 3840 flow [2024-06-28 01:20:33,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:33,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:33,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:33,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 01:20:33,724 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:20:33,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:33,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1274848653, now seen corresponding path program 4 times [2024-06-28 01:20:33,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:33,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846412775] [2024-06-28 01:20:33,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:33,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:34,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:34,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:34,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846412775] [2024-06-28 01:20:34,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846412775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:34,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:34,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:20:34,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879532794] [2024-06-28 01:20:34,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:34,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:20:34,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:34,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:20:34,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:20:35,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:20:35,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 364 transitions, 3840 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:35,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:35,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:20:35,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:36,272 INFO L124 PetriNetUnfolderBase]: 2196/4645 cut-off events. [2024-06-28 01:20:36,272 INFO L125 PetriNetUnfolderBase]: For 193503/193503 co-relation queries the response was YES. [2024-06-28 01:20:36,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21250 conditions, 4645 events. 2196/4645 cut-off events. For 193503/193503 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 36725 event pairs, 611 based on Foata normal form. 8/4323 useless extension candidates. Maximal degree in co-relation 21060. Up to 3467 conditions per place. [2024-06-28 01:20:36,347 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 364 selfloop transitions, 32 changer transitions 0/405 dead transitions. [2024-06-28 01:20:36,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 405 transitions, 4896 flow [2024-06-28 01:20:36,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:20:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:20:36,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-28 01:20:36,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-28 01:20:36,348 INFO L175 Difference]: Start difference. First operand has 409 places, 364 transitions, 3840 flow. Second operand 11 states and 192 transitions. [2024-06-28 01:20:36,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 405 transitions, 4896 flow [2024-06-28 01:20:37,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 405 transitions, 4835 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:20:37,627 INFO L231 Difference]: Finished difference. Result has 411 places, 364 transitions, 3846 flow [2024-06-28 01:20:37,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3779, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3846, PETRI_PLACES=411, PETRI_TRANSITIONS=364} [2024-06-28 01:20:37,627 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 370 predicate places. [2024-06-28 01:20:37,628 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 364 transitions, 3846 flow [2024-06-28 01:20:37,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:37,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:37,628 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 01:20:37,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 01:20:37,628 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:20:37,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:37,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1552007457, now seen corresponding path program 5 times [2024-06-28 01:20:37,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:37,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411237152] [2024-06-28 01:20:37,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:37,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:38,627 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 01:20:38,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:38,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411237152] [2024-06-28 01:20:38,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411237152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:38,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:38,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:20:38,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019760554] [2024-06-28 01:20:38,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:38,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:20:38,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:38,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:20:38,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:20:38,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:20:38,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 364 transitions, 3846 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:38,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:38,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:20:38,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:39,984 INFO L124 PetriNetUnfolderBase]: 2213/4659 cut-off events. [2024-06-28 01:20:39,985 INFO L125 PetriNetUnfolderBase]: For 144111/144111 co-relation queries the response was YES. [2024-06-28 01:20:40,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21534 conditions, 4659 events. 2213/4659 cut-off events. For 144111/144111 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 36795 event pairs, 667 based on Foata normal form. 2/4335 useless extension candidates. Maximal degree in co-relation 21343. Up to 3737 conditions per place. [2024-06-28 01:20:40,049 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 336 selfloop transitions, 48 changer transitions 0/393 dead transitions. [2024-06-28 01:20:40,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 393 transitions, 4756 flow [2024-06-28 01:20:40,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:20:40,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:20:40,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-28 01:20:40,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-28 01:20:40,051 INFO L175 Difference]: Start difference. First operand has 411 places, 364 transitions, 3846 flow. Second operand 11 states and 182 transitions. [2024-06-28 01:20:40,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 393 transitions, 4756 flow [2024-06-28 01:20:41,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 393 transitions, 4693 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:20:41,206 INFO L231 Difference]: Finished difference. Result has 413 places, 365 transitions, 3915 flow [2024-06-28 01:20:41,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3783, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3915, PETRI_PLACES=413, PETRI_TRANSITIONS=365} [2024-06-28 01:20:41,207 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 372 predicate places. [2024-06-28 01:20:41,207 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 365 transitions, 3915 flow [2024-06-28 01:20:41,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:41,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:41,207 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 01:20:41,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 01:20:41,208 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:20:41,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:41,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1552214847, now seen corresponding path program 6 times [2024-06-28 01:20:41,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:41,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244655635] [2024-06-28 01:20:41,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:41,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:42,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:42,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:42,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244655635] [2024-06-28 01:20:42,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244655635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:42,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:42,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:20:42,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925682268] [2024-06-28 01:20:42,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:42,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:20:42,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:42,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:20:42,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:20:42,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:20:42,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 365 transitions, 3915 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:42,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:42,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:20:42,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:43,751 INFO L124 PetriNetUnfolderBase]: 2314/4903 cut-off events. [2024-06-28 01:20:43,751 INFO L125 PetriNetUnfolderBase]: For 246708/246708 co-relation queries the response was YES. [2024-06-28 01:20:43,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24427 conditions, 4903 events. 2314/4903 cut-off events. For 246708/246708 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 39377 event pairs, 711 based on Foata normal form. 2/4568 useless extension candidates. Maximal degree in co-relation 24235. Up to 3695 conditions per place. [2024-06-28 01:20:43,826 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 336 selfloop transitions, 58 changer transitions 0/403 dead transitions. [2024-06-28 01:20:43,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 403 transitions, 5225 flow [2024-06-28 01:20:43,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:20:43,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:20:43,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-28 01:20:43,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-28 01:20:43,827 INFO L175 Difference]: Start difference. First operand has 413 places, 365 transitions, 3915 flow. Second operand 11 states and 192 transitions. [2024-06-28 01:20:43,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 403 transitions, 5225 flow [2024-06-28 01:20:45,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 403 transitions, 5103 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 01:20:45,788 INFO L231 Difference]: Finished difference. Result has 415 places, 367 transitions, 3979 flow [2024-06-28 01:20:45,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3793, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3979, PETRI_PLACES=415, PETRI_TRANSITIONS=367} [2024-06-28 01:20:45,789 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 374 predicate places. [2024-06-28 01:20:45,789 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 367 transitions, 3979 flow [2024-06-28 01:20:45,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:45,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:45,789 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 01:20:45,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 01:20:45,790 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:20:45,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:45,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1746154257, now seen corresponding path program 7 times [2024-06-28 01:20:45,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:45,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653104807] [2024-06-28 01:20:45,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:45,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:46,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:46,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:46,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653104807] [2024-06-28 01:20:46,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653104807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:46,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:46,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:20:46,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869061779] [2024-06-28 01:20:46,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:46,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:20:46,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:46,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:20:46,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:20:46,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:20:46,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 367 transitions, 3979 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:46,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:46,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:20:46,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:48,217 INFO L124 PetriNetUnfolderBase]: 2368/5015 cut-off events. [2024-06-28 01:20:48,218 INFO L125 PetriNetUnfolderBase]: For 304890/304890 co-relation queries the response was YES. [2024-06-28 01:20:48,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25028 conditions, 5015 events. 2368/5015 cut-off events. For 304890/304890 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 40438 event pairs, 724 based on Foata normal form. 8/4685 useless extension candidates. Maximal degree in co-relation 24835. Up to 3793 conditions per place. [2024-06-28 01:20:48,282 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 357 selfloop transitions, 42 changer transitions 0/408 dead transitions. [2024-06-28 01:20:48,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 408 transitions, 5069 flow [2024-06-28 01:20:48,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:20:48,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:20:48,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-28 01:20:48,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-28 01:20:48,283 INFO L175 Difference]: Start difference. First operand has 415 places, 367 transitions, 3979 flow. Second operand 11 states and 189 transitions. [2024-06-28 01:20:48,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 408 transitions, 5069 flow [2024-06-28 01:20:49,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 408 transitions, 4971 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 01:20:49,990 INFO L231 Difference]: Finished difference. Result has 421 places, 368 transitions, 3991 flow [2024-06-28 01:20:49,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3881, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3991, PETRI_PLACES=421, PETRI_TRANSITIONS=368} [2024-06-28 01:20:49,990 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 380 predicate places. [2024-06-28 01:20:49,990 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 368 transitions, 3991 flow [2024-06-28 01:20:49,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:49,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:49,991 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 01:20:49,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 01:20:49,991 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:20:49,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:49,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1971851703, now seen corresponding path program 8 times [2024-06-28 01:20:49,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:49,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734593646] [2024-06-28 01:20:49,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:49,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:51,132 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 01:20:51,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:51,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734593646] [2024-06-28 01:20:51,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734593646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:51,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:51,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:20:51,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417616234] [2024-06-28 01:20:51,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:51,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:20:51,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:51,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:20:51,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:20:51,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:20:51,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 368 transitions, 3991 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:51,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:51,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:20:51,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:52,525 INFO L124 PetriNetUnfolderBase]: 2385/5055 cut-off events. [2024-06-28 01:20:52,525 INFO L125 PetriNetUnfolderBase]: For 252655/252655 co-relation queries the response was YES. [2024-06-28 01:20:52,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25167 conditions, 5055 events. 2385/5055 cut-off events. For 252655/252655 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 40815 event pairs, 757 based on Foata normal form. 2/4713 useless extension candidates. Maximal degree in co-relation 24971. Up to 4050 conditions per place. [2024-06-28 01:20:52,601 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 356 selfloop transitions, 40 changer transitions 0/405 dead transitions. [2024-06-28 01:20:52,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 405 transitions, 4957 flow [2024-06-28 01:20:52,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:20:52,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:20:52,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-28 01:20:52,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-28 01:20:52,603 INFO L175 Difference]: Start difference. First operand has 421 places, 368 transitions, 3991 flow. Second operand 11 states and 184 transitions. [2024-06-28 01:20:52,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 405 transitions, 4957 flow [2024-06-28 01:20:54,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 405 transitions, 4883 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:20:54,355 INFO L231 Difference]: Finished difference. Result has 424 places, 369 transitions, 4037 flow [2024-06-28 01:20:54,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3917, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4037, PETRI_PLACES=424, PETRI_TRANSITIONS=369} [2024-06-28 01:20:54,356 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 383 predicate places. [2024-06-28 01:20:54,356 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 369 transitions, 4037 flow [2024-06-28 01:20:54,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:54,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:54,356 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 01:20:54,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 01:20:54,357 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:20:54,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:54,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1544857617, now seen corresponding path program 9 times [2024-06-28 01:20:54,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:54,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537719786] [2024-06-28 01:20:54,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:54,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:55,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:55,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537719786] [2024-06-28 01:20:55,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537719786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:55,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:55,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:20:55,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125785712] [2024-06-28 01:20:55,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:55,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:20:55,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:55,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:20:55,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:20:55,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:20:55,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 369 transitions, 4037 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:55,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:55,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:20:55,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:56,967 INFO L124 PetriNetUnfolderBase]: 2372/5048 cut-off events. [2024-06-28 01:20:56,968 INFO L125 PetriNetUnfolderBase]: For 239667/239667 co-relation queries the response was YES. [2024-06-28 01:20:57,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23845 conditions, 5048 events. 2372/5048 cut-off events. For 239667/239667 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 40880 event pairs, 774 based on Foata normal form. 10/4712 useless extension candidates. Maximal degree in co-relation 23648. Up to 3907 conditions per place. [2024-06-28 01:20:57,033 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 334 selfloop transitions, 57 changer transitions 0/400 dead transitions. [2024-06-28 01:20:57,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 400 transitions, 4985 flow [2024-06-28 01:20:57,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:20:57,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:20:57,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-28 01:20:57,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-28 01:20:57,048 INFO L175 Difference]: Start difference. First operand has 424 places, 369 transitions, 4037 flow. Second operand 11 states and 186 transitions. [2024-06-28 01:20:57,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 400 transitions, 4985 flow [2024-06-28 01:20:58,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 400 transitions, 4863 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 01:20:58,279 INFO L231 Difference]: Finished difference. Result has 426 places, 369 transitions, 4035 flow [2024-06-28 01:20:58,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3915, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4035, PETRI_PLACES=426, PETRI_TRANSITIONS=369} [2024-06-28 01:20:58,281 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 385 predicate places. [2024-06-28 01:20:58,281 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 369 transitions, 4035 flow [2024-06-28 01:20:58,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:58,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:58,281 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 01:20:58,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 01:20:58,281 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:20:58,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:58,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1551999521, now seen corresponding path program 1 times [2024-06-28 01:20:58,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:58,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075926450] [2024-06-28 01:20:58,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:58,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:59,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:59,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:59,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075926450] [2024-06-28 01:20:59,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075926450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:59,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:59,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:20:59,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306374370] [2024-06-28 01:20:59,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:59,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:20:59,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:59,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:20:59,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:21:00,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:21:00,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 369 transitions, 4035 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:00,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:00,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:21:00,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:01,534 INFO L124 PetriNetUnfolderBase]: 2426/5192 cut-off events. [2024-06-28 01:21:01,534 INFO L125 PetriNetUnfolderBase]: For 222615/222615 co-relation queries the response was YES. [2024-06-28 01:21:01,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24243 conditions, 5192 events. 2426/5192 cut-off events. For 222615/222615 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 42493 event pairs, 806 based on Foata normal form. 8/4843 useless extension candidates. Maximal degree in co-relation 24045. Up to 4058 conditions per place. [2024-06-28 01:21:01,600 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 344 selfloop transitions, 49 changer transitions 0/402 dead transitions. [2024-06-28 01:21:01,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 402 transitions, 4995 flow [2024-06-28 01:21:01,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:21:01,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:21:01,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 198 transitions. [2024-06-28 01:21:01,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:21:01,601 INFO L175 Difference]: Start difference. First operand has 426 places, 369 transitions, 4035 flow. Second operand 12 states and 198 transitions. [2024-06-28 01:21:01,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 402 transitions, 4995 flow [2024-06-28 01:21:02,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 402 transitions, 4875 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 01:21:02,806 INFO L231 Difference]: Finished difference. Result has 428 places, 369 transitions, 4017 flow [2024-06-28 01:21:02,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3915, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4017, PETRI_PLACES=428, PETRI_TRANSITIONS=369} [2024-06-28 01:21:02,807 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 387 predicate places. [2024-06-28 01:21:02,807 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 369 transitions, 4017 flow [2024-06-28 01:21:02,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:02,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:02,807 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 01:21:02,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 01:21:02,807 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:02,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:02,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1544849681, now seen corresponding path program 2 times [2024-06-28 01:21:02,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:02,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066613635] [2024-06-28 01:21:02,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:02,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:04,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:04,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:04,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066613635] [2024-06-28 01:21:04,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066613635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:04,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:04,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:21:04,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992318726] [2024-06-28 01:21:04,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:04,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:21:04,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:04,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:21:04,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:21:04,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:21:04,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 369 transitions, 4017 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:04,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:04,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:21:04,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:06,248 INFO L124 PetriNetUnfolderBase]: 2480/5345 cut-off events. [2024-06-28 01:21:06,248 INFO L125 PetriNetUnfolderBase]: For 225976/225976 co-relation queries the response was YES. [2024-06-28 01:21:06,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24833 conditions, 5345 events. 2480/5345 cut-off events. For 225976/225976 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 44260 event pairs, 848 based on Foata normal form. 8/4987 useless extension candidates. Maximal degree in co-relation 24634. Up to 4168 conditions per place. [2024-06-28 01:21:06,319 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 343 selfloop transitions, 50 changer transitions 0/402 dead transitions. [2024-06-28 01:21:06,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 402 transitions, 4977 flow [2024-06-28 01:21:06,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:21:06,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:21:06,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 197 transitions. [2024-06-28 01:21:06,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4436936936936937 [2024-06-28 01:21:06,320 INFO L175 Difference]: Start difference. First operand has 428 places, 369 transitions, 4017 flow. Second operand 12 states and 197 transitions. [2024-06-28 01:21:06,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 402 transitions, 4977 flow [2024-06-28 01:21:07,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 402 transitions, 4856 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 01:21:07,625 INFO L231 Difference]: Finished difference. Result has 429 places, 369 transitions, 4000 flow [2024-06-28 01:21:07,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3896, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4000, PETRI_PLACES=429, PETRI_TRANSITIONS=369} [2024-06-28 01:21:07,625 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 388 predicate places. [2024-06-28 01:21:07,625 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 369 transitions, 4000 flow [2024-06-28 01:21:07,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:07,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:07,626 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 01:21:07,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 01:21:07,626 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:07,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:07,626 INFO L85 PathProgramCache]: Analyzing trace with hash 797282653, now seen corresponding path program 3 times [2024-06-28 01:21:07,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:07,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638111914] [2024-06-28 01:21:07,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:07,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:08,970 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 01:21:08,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:08,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638111914] [2024-06-28 01:21:08,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638111914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:08,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:08,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:21:08,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592619519] [2024-06-28 01:21:08,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:08,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:21:08,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:08,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:21:08,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:21:09,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:21:09,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 369 transitions, 4000 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:09,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:09,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:21:09,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:10,492 INFO L124 PetriNetUnfolderBase]: 2591/5645 cut-off events. [2024-06-28 01:21:10,492 INFO L125 PetriNetUnfolderBase]: For 208689/208689 co-relation queries the response was YES. [2024-06-28 01:21:10,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25889 conditions, 5645 events. 2591/5645 cut-off events. For 208689/208689 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 47696 event pairs, 917 based on Foata normal form. 6/5279 useless extension candidates. Maximal degree in co-relation 25689. Up to 3752 conditions per place. [2024-06-28 01:21:10,573 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 336 selfloop transitions, 63 changer transitions 0/408 dead transitions. [2024-06-28 01:21:10,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 408 transitions, 5024 flow [2024-06-28 01:21:10,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:21:10,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:21:10,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 204 transitions. [2024-06-28 01:21:10,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:21:10,574 INFO L175 Difference]: Start difference. First operand has 429 places, 369 transitions, 4000 flow. Second operand 12 states and 204 transitions. [2024-06-28 01:21:10,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 408 transitions, 5024 flow [2024-06-28 01:21:12,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 408 transitions, 4926 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:21:12,403 INFO L231 Difference]: Finished difference. Result has 431 places, 369 transitions, 4031 flow [2024-06-28 01:21:12,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3902, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4031, PETRI_PLACES=431, PETRI_TRANSITIONS=369} [2024-06-28 01:21:12,404 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 390 predicate places. [2024-06-28 01:21:12,404 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 369 transitions, 4031 flow [2024-06-28 01:21:12,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:12,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:12,404 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 01:21:12,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 01:21:12,404 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:12,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:12,405 INFO L85 PathProgramCache]: Analyzing trace with hash -2143071493, now seen corresponding path program 10 times [2024-06-28 01:21:12,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:12,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21461928] [2024-06-28 01:21:12,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:12,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:13,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:13,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21461928] [2024-06-28 01:21:13,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21461928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:13,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:13,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:21:13,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239699032] [2024-06-28 01:21:13,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:13,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:21:13,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:13,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:21:13,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:21:13,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:21:13,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 369 transitions, 4031 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:13,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:13,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:21:13,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:15,405 INFO L124 PetriNetUnfolderBase]: 2608/5674 cut-off events. [2024-06-28 01:21:15,405 INFO L125 PetriNetUnfolderBase]: For 176195/176195 co-relation queries the response was YES. [2024-06-28 01:21:15,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26288 conditions, 5674 events. 2608/5674 cut-off events. For 176195/176195 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 48072 event pairs, 961 based on Foata normal form. 2/5295 useless extension candidates. Maximal degree in co-relation 26087. Up to 4413 conditions per place. [2024-06-28 01:21:15,499 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 307 selfloop transitions, 78 changer transitions 0/394 dead transitions. [2024-06-28 01:21:15,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 394 transitions, 4927 flow [2024-06-28 01:21:15,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:21:15,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:21:15,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-28 01:21:15,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-28 01:21:15,501 INFO L175 Difference]: Start difference. First operand has 431 places, 369 transitions, 4031 flow. Second operand 11 states and 184 transitions. [2024-06-28 01:21:15,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 394 transitions, 4927 flow [2024-06-28 01:21:17,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 394 transitions, 4812 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 01:21:17,453 INFO L231 Difference]: Finished difference. Result has 433 places, 370 transitions, 4114 flow [2024-06-28 01:21:17,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3916, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4114, PETRI_PLACES=433, PETRI_TRANSITIONS=370} [2024-06-28 01:21:17,454 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 392 predicate places. [2024-06-28 01:21:17,454 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 370 transitions, 4114 flow [2024-06-28 01:21:17,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:17,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:17,454 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 01:21:17,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 01:21:17,454 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:17,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:17,455 INFO L85 PathProgramCache]: Analyzing trace with hash 2144745963, now seen corresponding path program 11 times [2024-06-28 01:21:17,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:17,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148756339] [2024-06-28 01:21:17,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:17,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:18,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:18,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:18,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148756339] [2024-06-28 01:21:18,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148756339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:18,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:18,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:21:18,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943911059] [2024-06-28 01:21:18,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:18,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:21:18,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:18,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:21:18,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:21:18,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:21:18,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 370 transitions, 4114 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:18,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:18,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:21:18,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:20,047 INFO L124 PetriNetUnfolderBase]: 2625/5704 cut-off events. [2024-06-28 01:21:20,047 INFO L125 PetriNetUnfolderBase]: For 182272/182272 co-relation queries the response was YES. [2024-06-28 01:21:20,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26820 conditions, 5704 events. 2625/5704 cut-off events. For 182272/182272 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 48384 event pairs, 960 based on Foata normal form. 2/5322 useless extension candidates. Maximal degree in co-relation 26618. Up to 4344 conditions per place. [2024-06-28 01:21:20,133 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 279 selfloop transitions, 107 changer transitions 0/395 dead transitions. [2024-06-28 01:21:20,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 395 transitions, 5014 flow [2024-06-28 01:21:20,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:21:20,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:21:20,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-28 01:21:20,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:21:20,134 INFO L175 Difference]: Start difference. First operand has 433 places, 370 transitions, 4114 flow. Second operand 11 states and 187 transitions. [2024-06-28 01:21:20,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 395 transitions, 5014 flow [2024-06-28 01:21:21,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 395 transitions, 4826 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 01:21:21,677 INFO L231 Difference]: Finished difference. Result has 435 places, 371 transitions, 4184 flow [2024-06-28 01:21:21,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3926, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4184, PETRI_PLACES=435, PETRI_TRANSITIONS=371} [2024-06-28 01:21:21,677 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 394 predicate places. [2024-06-28 01:21:21,678 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 371 transitions, 4184 flow [2024-06-28 01:21:21,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:21,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:21,678 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 01:21:21,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 01:21:21,678 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:21,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:21,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1994658419, now seen corresponding path program 12 times [2024-06-28 01:21:21,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:21,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616625422] [2024-06-28 01:21:21,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:21,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:22,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:22,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:22,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616625422] [2024-06-28 01:21:22,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616625422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:22,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:22,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:21:22,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010513324] [2024-06-28 01:21:22,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:22,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:21:22,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:22,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:21:22,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:21:22,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:21:22,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 371 transitions, 4184 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:22,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:22,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:21:22,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:24,627 INFO L124 PetriNetUnfolderBase]: 2726/5943 cut-off events. [2024-06-28 01:21:24,627 INFO L125 PetriNetUnfolderBase]: For 298340/298340 co-relation queries the response was YES. [2024-06-28 01:21:24,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29765 conditions, 5943 events. 2726/5943 cut-off events. For 298340/298340 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 51037 event pairs, 998 based on Foata normal form. 2/5552 useless extension candidates. Maximal degree in co-relation 29562. Up to 4290 conditions per place. [2024-06-28 01:21:24,707 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 286 selfloop transitions, 110 changer transitions 0/405 dead transitions. [2024-06-28 01:21:24,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 405 transitions, 5510 flow [2024-06-28 01:21:24,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:21:24,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:21:24,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-28 01:21:24,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47911547911547914 [2024-06-28 01:21:24,708 INFO L175 Difference]: Start difference. First operand has 435 places, 371 transitions, 4184 flow. Second operand 11 states and 195 transitions. [2024-06-28 01:21:24,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 405 transitions, 5510 flow [2024-06-28 01:21:27,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 405 transitions, 5262 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 01:21:27,174 INFO L231 Difference]: Finished difference. Result has 437 places, 373 transitions, 4242 flow [2024-06-28 01:21:27,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3936, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4242, PETRI_PLACES=437, PETRI_TRANSITIONS=373} [2024-06-28 01:21:27,175 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 396 predicate places. [2024-06-28 01:21:27,175 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 373 transitions, 4242 flow [2024-06-28 01:21:27,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:27,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:27,175 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 01:21:27,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 01:21:27,176 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:27,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:27,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1737950519, now seen corresponding path program 13 times [2024-06-28 01:21:27,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:27,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114682343] [2024-06-28 01:21:27,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:27,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:28,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:28,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:28,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114682343] [2024-06-28 01:21:28,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114682343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:28,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:28,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:21:28,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049125893] [2024-06-28 01:21:28,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:28,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:21:28,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:28,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:21:28,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:21:28,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:21:28,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 373 transitions, 4242 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:28,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:28,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:21:28,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:30,208 INFO L124 PetriNetUnfolderBase]: 2723/5955 cut-off events. [2024-06-28 01:21:30,208 INFO L125 PetriNetUnfolderBase]: For 277808/277808 co-relation queries the response was YES. [2024-06-28 01:21:30,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29391 conditions, 5955 events. 2723/5955 cut-off events. For 277808/277808 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 51244 event pairs, 1020 based on Foata normal form. 2/5558 useless extension candidates. Maximal degree in co-relation 29187. Up to 4634 conditions per place. [2024-06-28 01:21:30,301 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 304 selfloop transitions, 84 changer transitions 0/397 dead transitions. [2024-06-28 01:21:30,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 397 transitions, 5108 flow [2024-06-28 01:21:30,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:21:30,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:21:30,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-28 01:21:30,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-28 01:21:30,303 INFO L175 Difference]: Start difference. First operand has 437 places, 373 transitions, 4242 flow. Second operand 11 states and 182 transitions. [2024-06-28 01:21:30,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 397 transitions, 5108 flow [2024-06-28 01:21:32,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 397 transitions, 4887 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-28 01:21:32,525 INFO L231 Difference]: Finished difference. Result has 440 places, 373 transitions, 4193 flow [2024-06-28 01:21:32,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4021, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4193, PETRI_PLACES=440, PETRI_TRANSITIONS=373} [2024-06-28 01:21:32,526 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 399 predicate places. [2024-06-28 01:21:32,526 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 373 transitions, 4193 flow [2024-06-28 01:21:32,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:32,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:32,526 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 01:21:32,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 01:21:32,527 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:32,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:32,527 INFO L85 PathProgramCache]: Analyzing trace with hash -275512677, now seen corresponding path program 14 times [2024-06-28 01:21:32,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:32,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462827944] [2024-06-28 01:21:32,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:32,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:33,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:33,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:33,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462827944] [2024-06-28 01:21:33,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462827944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:33,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:33,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:21:33,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584767021] [2024-06-28 01:21:33,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:33,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:21:33,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:33,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:21:33,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:21:33,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:21:33,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 373 transitions, 4193 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:33,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:33,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:21:33,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:35,336 INFO L124 PetriNetUnfolderBase]: 2740/5986 cut-off events. [2024-06-28 01:21:35,337 INFO L125 PetriNetUnfolderBase]: For 274772/274772 co-relation queries the response was YES. [2024-06-28 01:21:35,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29267 conditions, 5986 events. 2740/5986 cut-off events. For 274772/274772 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 51609 event pairs, 1013 based on Foata normal form. 2/5585 useless extension candidates. Maximal degree in co-relation 29062. Up to 4740 conditions per place. [2024-06-28 01:21:35,444 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 320 selfloop transitions, 69 changer transitions 0/398 dead transitions. [2024-06-28 01:21:35,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 398 transitions, 5099 flow [2024-06-28 01:21:35,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:21:35,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:21:35,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-28 01:21:35,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-28 01:21:35,445 INFO L175 Difference]: Start difference. First operand has 440 places, 373 transitions, 4193 flow. Second operand 11 states and 184 transitions. [2024-06-28 01:21:35,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 398 transitions, 5099 flow [2024-06-28 01:21:38,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 398 transitions, 4895 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 01:21:38,037 INFO L231 Difference]: Finished difference. Result has 441 places, 374 transitions, 4171 flow [2024-06-28 01:21:38,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3989, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4171, PETRI_PLACES=441, PETRI_TRANSITIONS=374} [2024-06-28 01:21:38,038 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 400 predicate places. [2024-06-28 01:21:38,038 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 374 transitions, 4171 flow [2024-06-28 01:21:38,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:38,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:38,038 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 01:21:38,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 01:21:38,038 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:38,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:38,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1757824467, now seen corresponding path program 15 times [2024-06-28 01:21:38,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:38,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753980349] [2024-06-28 01:21:38,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:38,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:39,187 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 01:21:39,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:39,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753980349] [2024-06-28 01:21:39,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753980349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:39,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:39,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:21:39,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102711534] [2024-06-28 01:21:39,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:39,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:21:39,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:39,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:21:39,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:21:39,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:21:39,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 374 transitions, 4171 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:39,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:39,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:21:39,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:41,123 INFO L124 PetriNetUnfolderBase]: 2757/6034 cut-off events. [2024-06-28 01:21:41,123 INFO L125 PetriNetUnfolderBase]: For 279248/279248 co-relation queries the response was YES. [2024-06-28 01:21:41,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29514 conditions, 6034 events. 2757/6034 cut-off events. For 279248/279248 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 52158 event pairs, 1032 based on Foata normal form. 2/5632 useless extension candidates. Maximal degree in co-relation 29308. Up to 4796 conditions per place. [2024-06-28 01:21:41,215 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 328 selfloop transitions, 62 changer transitions 0/399 dead transitions. [2024-06-28 01:21:41,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 399 transitions, 5081 flow [2024-06-28 01:21:41,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:21:41,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:21:41,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-28 01:21:41,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-28 01:21:41,216 INFO L175 Difference]: Start difference. First operand has 441 places, 374 transitions, 4171 flow. Second operand 11 states and 181 transitions. [2024-06-28 01:21:41,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 399 transitions, 5081 flow [2024-06-28 01:21:43,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 399 transitions, 4909 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 01:21:43,629 INFO L231 Difference]: Finished difference. Result has 443 places, 375 transitions, 4169 flow [2024-06-28 01:21:43,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3999, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4169, PETRI_PLACES=443, PETRI_TRANSITIONS=375} [2024-06-28 01:21:43,629 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 402 predicate places. [2024-06-28 01:21:43,630 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 375 transitions, 4169 flow [2024-06-28 01:21:43,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:43,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:43,630 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 01:21:43,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 01:21:43,630 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:43,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:43,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1750467237, now seen corresponding path program 16 times [2024-06-28 01:21:43,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:43,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852647896] [2024-06-28 01:21:43,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:43,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:44,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:44,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:44,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852647896] [2024-06-28 01:21:44,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852647896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:44,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:44,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:21:44,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223738146] [2024-06-28 01:21:44,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:44,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:21:44,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:44,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:21:44,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:21:44,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:21:44,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 375 transitions, 4169 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:44,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:44,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:21:44,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:46,562 INFO L124 PetriNetUnfolderBase]: 2838/6218 cut-off events. [2024-06-28 01:21:46,562 INFO L125 PetriNetUnfolderBase]: For 378243/378243 co-relation queries the response was YES. [2024-06-28 01:21:46,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31651 conditions, 6218 events. 2838/6218 cut-off events. For 378243/378243 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 54172 event pairs, 1062 based on Foata normal form. 2/5809 useless extension candidates. Maximal degree in co-relation 31444. Up to 4721 conditions per place. [2024-06-28 01:21:46,675 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 328 selfloop transitions, 71 changer transitions 0/408 dead transitions. [2024-06-28 01:21:46,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 408 transitions, 5471 flow [2024-06-28 01:21:46,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:21:46,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:21:46,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-28 01:21:46,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-28 01:21:46,676 INFO L175 Difference]: Start difference. First operand has 443 places, 375 transitions, 4169 flow. Second operand 11 states and 192 transitions. [2024-06-28 01:21:46,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 408 transitions, 5471 flow [2024-06-28 01:21:49,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 408 transitions, 5311 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 01:21:49,111 INFO L231 Difference]: Finished difference. Result has 445 places, 376 transitions, 4199 flow [2024-06-28 01:21:49,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4009, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4199, PETRI_PLACES=445, PETRI_TRANSITIONS=376} [2024-06-28 01:21:49,112 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 404 predicate places. [2024-06-28 01:21:49,112 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 376 transitions, 4199 flow [2024-06-28 01:21:49,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:49,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:49,112 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 01:21:49,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 01:21:49,113 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:49,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:49,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2007078707, now seen corresponding path program 17 times [2024-06-28 01:21:49,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:49,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343511184] [2024-06-28 01:21:49,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:49,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:50,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:50,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:50,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343511184] [2024-06-28 01:21:50,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343511184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:50,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:50,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:21:50,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790189767] [2024-06-28 01:21:50,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:50,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:21:50,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:50,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:21:50,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:21:50,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:21:50,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 376 transitions, 4199 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:50,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:50,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:21:50,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:51,836 INFO L124 PetriNetUnfolderBase]: 2892/6360 cut-off events. [2024-06-28 01:21:51,836 INFO L125 PetriNetUnfolderBase]: For 447403/447403 co-relation queries the response was YES. [2024-06-28 01:21:51,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32297 conditions, 6360 events. 2892/6360 cut-off events. For 447403/447403 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 55776 event pairs, 1081 based on Foata normal form. 8/5946 useless extension candidates. Maximal degree in co-relation 32089. Up to 4812 conditions per place. [2024-06-28 01:21:51,941 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 347 selfloop transitions, 57 changer transitions 0/413 dead transitions. [2024-06-28 01:21:51,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 413 transitions, 5294 flow [2024-06-28 01:21:51,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:21:51,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:21:51,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-28 01:21:51,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-28 01:21:51,942 INFO L175 Difference]: Start difference. First operand has 445 places, 376 transitions, 4199 flow. Second operand 11 states and 189 transitions. [2024-06-28 01:21:51,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 413 transitions, 5294 flow [2024-06-28 01:21:55,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 413 transitions, 5112 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 01:21:55,130 INFO L231 Difference]: Finished difference. Result has 448 places, 377 transitions, 4155 flow [2024-06-28 01:21:55,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4019, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4155, PETRI_PLACES=448, PETRI_TRANSITIONS=377} [2024-06-28 01:21:55,131 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 407 predicate places. [2024-06-28 01:21:55,131 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 377 transitions, 4155 flow [2024-06-28 01:21:55,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:55,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:55,132 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 01:21:55,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 01:21:55,132 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:55,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:55,133 INFO L85 PathProgramCache]: Analyzing trace with hash -475166007, now seen corresponding path program 18 times [2024-06-28 01:21:55,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:55,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220390579] [2024-06-28 01:21:55,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:55,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:56,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:56,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:56,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220390579] [2024-06-28 01:21:56,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220390579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:56,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:56,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:21:56,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547234514] [2024-06-28 01:21:56,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:56,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:21:56,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:56,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:21:56,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:21:56,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:21:56,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 377 transitions, 4155 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:56,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:56,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:21:56,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:58,317 INFO L124 PetriNetUnfolderBase]: 2882/6286 cut-off events. [2024-06-28 01:21:58,318 INFO L125 PetriNetUnfolderBase]: For 360383/360383 co-relation queries the response was YES. [2024-06-28 01:21:58,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30679 conditions, 6286 events. 2882/6286 cut-off events. For 360383/360383 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 54782 event pairs, 1054 based on Foata normal form. 8/5891 useless extension candidates. Maximal degree in co-relation 30469. Up to 4825 conditions per place. [2024-06-28 01:21:58,414 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 345 selfloop transitions, 58 changer transitions 0/412 dead transitions. [2024-06-28 01:21:58,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 412 transitions, 5141 flow [2024-06-28 01:21:58,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:21:58,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:21:58,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-28 01:21:58,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-28 01:21:58,415 INFO L175 Difference]: Start difference. First operand has 448 places, 377 transitions, 4155 flow. Second operand 11 states and 186 transitions. [2024-06-28 01:21:58,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 412 transitions, 5141 flow [2024-06-28 01:22:00,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 412 transitions, 5035 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:22:01,003 INFO L231 Difference]: Finished difference. Result has 451 places, 377 transitions, 4170 flow [2024-06-28 01:22:01,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4049, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4170, PETRI_PLACES=451, PETRI_TRANSITIONS=377} [2024-06-28 01:22:01,003 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 410 predicate places. [2024-06-28 01:22:01,003 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 377 transitions, 4170 flow [2024-06-28 01:22:01,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:01,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:01,004 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 01:22:01,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 01:22:01,004 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:01,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:01,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1987024483, now seen corresponding path program 4 times [2024-06-28 01:22:01,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:01,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234702819] [2024-06-28 01:22:01,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:01,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:02,268 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 01:22:02,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:02,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234702819] [2024-06-28 01:22:02,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234702819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:02,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:02,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:22:02,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821516068] [2024-06-28 01:22:02,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:02,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:22:02,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:02,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:22:02,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:22:02,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:22:02,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 377 transitions, 4170 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:02,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:02,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:22:02,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:04,529 INFO L124 PetriNetUnfolderBase]: 3047/6734 cut-off events. [2024-06-28 01:22:04,529 INFO L125 PetriNetUnfolderBase]: For 535417/535417 co-relation queries the response was YES. [2024-06-28 01:22:04,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35133 conditions, 6734 events. 3047/6734 cut-off events. For 535417/535417 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 60169 event pairs, 1207 based on Foata normal form. 6/6308 useless extension candidates. Maximal degree in co-relation 34922. Up to 4847 conditions per place. [2024-06-28 01:22:04,654 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 317 selfloop transitions, 87 changer transitions 0/413 dead transitions. [2024-06-28 01:22:04,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 413 transitions, 5492 flow [2024-06-28 01:22:04,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:22:04,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:22:04,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 208 transitions. [2024-06-28 01:22:04,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-28 01:22:04,655 INFO L175 Difference]: Start difference. First operand has 451 places, 377 transitions, 4170 flow. Second operand 12 states and 208 transitions. [2024-06-28 01:22:04,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 413 transitions, 5492 flow [2024-06-28 01:22:07,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 413 transitions, 5379 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:22:07,903 INFO L231 Difference]: Finished difference. Result has 454 places, 377 transitions, 4234 flow [2024-06-28 01:22:07,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4057, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4234, PETRI_PLACES=454, PETRI_TRANSITIONS=377} [2024-06-28 01:22:07,904 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 413 predicate places. [2024-06-28 01:22:07,904 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 377 transitions, 4234 flow [2024-06-28 01:22:07,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:07,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:07,904 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 01:22:07,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 01:22:07,904 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:07,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:07,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1987033783, now seen corresponding path program 5 times [2024-06-28 01:22:07,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:07,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824013913] [2024-06-28 01:22:07,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:07,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:09,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:09,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:09,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824013913] [2024-06-28 01:22:09,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824013913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:09,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:09,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:22:09,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806262426] [2024-06-28 01:22:09,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:09,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:22:09,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:09,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:22:09,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:22:09,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:22:09,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 377 transitions, 4234 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:09,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:09,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:22:09,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:11,770 INFO L124 PetriNetUnfolderBase]: 3037/6729 cut-off events. [2024-06-28 01:22:11,770 INFO L125 PetriNetUnfolderBase]: For 475216/475216 co-relation queries the response was YES. [2024-06-28 01:22:11,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33976 conditions, 6729 events. 3037/6729 cut-off events. For 475216/475216 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 60194 event pairs, 1254 based on Foata normal form. 8/6301 useless extension candidates. Maximal degree in co-relation 33764. Up to 5147 conditions per place. [2024-06-28 01:22:11,877 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 313 selfloop transitions, 84 changer transitions 0/406 dead transitions. [2024-06-28 01:22:11,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 406 transitions, 5180 flow [2024-06-28 01:22:11,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:22:11,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:22:11,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 201 transitions. [2024-06-28 01:22:11,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527027027027027 [2024-06-28 01:22:11,879 INFO L175 Difference]: Start difference. First operand has 454 places, 377 transitions, 4234 flow. Second operand 12 states and 201 transitions. [2024-06-28 01:22:11,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 406 transitions, 5180 flow [2024-06-28 01:22:14,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 406 transitions, 5007 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:22:14,748 INFO L231 Difference]: Finished difference. Result has 456 places, 377 transitions, 4233 flow [2024-06-28 01:22:14,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4061, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4233, PETRI_PLACES=456, PETRI_TRANSITIONS=377} [2024-06-28 01:22:14,756 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 415 predicate places. [2024-06-28 01:22:14,757 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 377 transitions, 4233 flow [2024-06-28 01:22:14,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:14,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:14,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:14,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 01:22:14,757 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:14,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:14,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1994443093, now seen corresponding path program 6 times [2024-06-28 01:22:14,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:14,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326103878] [2024-06-28 01:22:14,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:14,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:16,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:16,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:16,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326103878] [2024-06-28 01:22:16,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326103878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:16,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:16,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:22:16,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72670160] [2024-06-28 01:22:16,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:16,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:22:16,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:16,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:22:16,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:22:16,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:22:16,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 377 transitions, 4233 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:16,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:16,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:22:16,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:18,683 INFO L124 PetriNetUnfolderBase]: 3027/6718 cut-off events. [2024-06-28 01:22:18,683 INFO L125 PetriNetUnfolderBase]: For 384311/384311 co-relation queries the response was YES. [2024-06-28 01:22:18,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32662 conditions, 6718 events. 3027/6718 cut-off events. For 384311/384311 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 60145 event pairs, 1236 based on Foata normal form. 8/6286 useless extension candidates. Maximal degree in co-relation 32449. Up to 5028 conditions per place. [2024-06-28 01:22:18,774 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 289 selfloop transitions, 108 changer transitions 0/406 dead transitions. [2024-06-28 01:22:18,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 406 transitions, 5179 flow [2024-06-28 01:22:18,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:22:18,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:22:18,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 204 transitions. [2024-06-28 01:22:18,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:22:18,776 INFO L175 Difference]: Start difference. First operand has 456 places, 377 transitions, 4233 flow. Second operand 12 states and 204 transitions. [2024-06-28 01:22:18,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 406 transitions, 5179 flow [2024-06-28 01:22:21,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 406 transitions, 5013 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:22:21,115 INFO L231 Difference]: Finished difference. Result has 458 places, 377 transitions, 4289 flow [2024-06-28 01:22:21,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4067, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4289, PETRI_PLACES=458, PETRI_TRANSITIONS=377} [2024-06-28 01:22:21,115 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 417 predicate places. [2024-06-28 01:22:21,115 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 377 transitions, 4289 flow [2024-06-28 01:22:21,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:21,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:21,116 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 01:22:21,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 01:22:21,116 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:21,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:21,117 INFO L85 PathProgramCache]: Analyzing trace with hash -275504741, now seen corresponding path program 7 times [2024-06-28 01:22:21,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:21,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323703648] [2024-06-28 01:22:21,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:21,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:22,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:22,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:22,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323703648] [2024-06-28 01:22:22,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323703648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:22,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:22,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:22:22,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493047945] [2024-06-28 01:22:22,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:22,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:22:22,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:22,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:22:22,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:22:22,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:22:22,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 377 transitions, 4289 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:22,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:22,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:22:22,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:24,836 INFO L124 PetriNetUnfolderBase]: 3081/6830 cut-off events. [2024-06-28 01:22:24,837 INFO L125 PetriNetUnfolderBase]: For 391463/391463 co-relation queries the response was YES. [2024-06-28 01:22:24,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33407 conditions, 6830 events. 3081/6830 cut-off events. For 391463/391463 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 61412 event pairs, 1268 based on Foata normal form. 8/6395 useless extension candidates. Maximal degree in co-relation 33193. Up to 5354 conditions per place. [2024-06-28 01:22:24,946 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 335 selfloop transitions, 62 changer transitions 0/406 dead transitions. [2024-06-28 01:22:24,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 406 transitions, 5235 flow [2024-06-28 01:22:24,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:22:24,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:22:24,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 198 transitions. [2024-06-28 01:22:24,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:22:24,947 INFO L175 Difference]: Start difference. First operand has 458 places, 377 transitions, 4289 flow. Second operand 12 states and 198 transitions. [2024-06-28 01:22:24,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 406 transitions, 5235 flow [2024-06-28 01:22:27,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 406 transitions, 5019 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 01:22:27,675 INFO L231 Difference]: Finished difference. Result has 459 places, 377 transitions, 4201 flow [2024-06-28 01:22:27,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4073, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4201, PETRI_PLACES=459, PETRI_TRANSITIONS=377} [2024-06-28 01:22:27,676 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 418 predicate places. [2024-06-28 01:22:27,676 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 377 transitions, 4201 flow [2024-06-28 01:22:27,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:27,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:27,677 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 01:22:27,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 01:22:27,677 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:27,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:27,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1987293253, now seen corresponding path program 8 times [2024-06-28 01:22:27,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:27,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761445416] [2024-06-28 01:22:27,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:27,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:29,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:29,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:29,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761445416] [2024-06-28 01:22:29,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761445416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:29,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:29,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:22:29,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073234748] [2024-06-28 01:22:29,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:29,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:22:29,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:29,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:22:29,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:22:29,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:22:29,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 377 transitions, 4201 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call 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 01:22:29,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:22:29,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:31,905 INFO L124 PetriNetUnfolderBase]: 3135/6974 cut-off events. [2024-06-28 01:22:31,905 INFO L125 PetriNetUnfolderBase]: For 397540/397540 co-relation queries the response was YES. [2024-06-28 01:22:31,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33869 conditions, 6974 events. 3135/6974 cut-off events. For 397540/397540 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 63177 event pairs, 1300 based on Foata normal form. 8/6529 useless extension candidates. Maximal degree in co-relation 33654. Up to 5364 conditions per place. [2024-06-28 01:22:32,010 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 318 selfloop transitions, 79 changer transitions 0/406 dead transitions. [2024-06-28 01:22:32,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 406 transitions, 5147 flow [2024-06-28 01:22:32,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:22:32,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:22:32,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 200 transitions. [2024-06-28 01:22:32,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-28 01:22:32,011 INFO L175 Difference]: Start difference. First operand has 459 places, 377 transitions, 4201 flow. Second operand 12 states and 200 transitions. [2024-06-28 01:22:32,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 406 transitions, 5147 flow [2024-06-28 01:22:34,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 406 transitions, 5025 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:22:34,755 INFO L231 Difference]: Finished difference. Result has 461 places, 377 transitions, 4241 flow [2024-06-28 01:22:34,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4079, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4241, PETRI_PLACES=461, PETRI_TRANSITIONS=377} [2024-06-28 01:22:34,756 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 420 predicate places. [2024-06-28 01:22:34,756 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 377 transitions, 4241 flow [2024-06-28 01:22:34,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:34,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:34,756 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 01:22:34,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 01:22:34,756 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:34,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:34,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1737942583, now seen corresponding path program 9 times [2024-06-28 01:22:34,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:34,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704737614] [2024-06-28 01:22:34,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:34,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:36,889 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 01:22:36,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:36,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704737614] [2024-06-28 01:22:36,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704737614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:36,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:36,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:22:36,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637254318] [2024-06-28 01:22:36,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:36,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:22:36,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:36,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:22:36,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:22:37,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:22:37,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 377 transitions, 4241 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:37,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:37,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:22:37,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:39,143 INFO L124 PetriNetUnfolderBase]: 3189/7111 cut-off events. [2024-06-28 01:22:39,143 INFO L125 PetriNetUnfolderBase]: For 403794/403794 co-relation queries the response was YES. [2024-06-28 01:22:39,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34585 conditions, 7111 events. 3189/7111 cut-off events. For 403794/403794 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 64757 event pairs, 1342 based on Foata normal form. 8/6661 useless extension candidates. Maximal degree in co-relation 34369. Up to 5474 conditions per place. [2024-06-28 01:22:39,262 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 312 selfloop transitions, 85 changer transitions 0/406 dead transitions. [2024-06-28 01:22:39,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 406 transitions, 5187 flow [2024-06-28 01:22:39,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:22:39,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:22:39,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 198 transitions. [2024-06-28 01:22:39,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:22:39,263 INFO L175 Difference]: Start difference. First operand has 461 places, 377 transitions, 4241 flow. Second operand 12 states and 198 transitions. [2024-06-28 01:22:39,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 406 transitions, 5187 flow [2024-06-28 01:22:41,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 406 transitions, 5031 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:22:41,839 INFO L231 Difference]: Finished difference. Result has 463 places, 377 transitions, 4259 flow [2024-06-28 01:22:41,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4085, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4259, PETRI_PLACES=463, PETRI_TRANSITIONS=377} [2024-06-28 01:22:41,840 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 422 predicate places. [2024-06-28 01:22:41,840 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 377 transitions, 4259 flow [2024-06-28 01:22:41,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:41,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:41,840 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 01:22:41,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 01:22:41,840 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:41,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:41,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1737683113, now seen corresponding path program 10 times [2024-06-28 01:22:41,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:41,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972486486] [2024-06-28 01:22:41,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:41,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:43,637 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 01:22:43,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:43,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972486486] [2024-06-28 01:22:43,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972486486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:43,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:43,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:22:43,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509602450] [2024-06-28 01:22:43,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:43,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:22:43,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:43,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:22:43,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:22:43,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:22:43,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 377 transitions, 4259 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:43,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:43,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:22:43,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:45,985 INFO L124 PetriNetUnfolderBase]: 3243/7271 cut-off events. [2024-06-28 01:22:45,985 INFO L125 PetriNetUnfolderBase]: For 410281/410281 co-relation queries the response was YES. [2024-06-28 01:22:46,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35278 conditions, 7271 events. 3243/7271 cut-off events. For 410281/410281 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 66837 event pairs, 1374 based on Foata normal form. 8/6807 useless extension candidates. Maximal degree in co-relation 35061. Up to 5574 conditions per place. [2024-06-28 01:22:46,097 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 309 selfloop transitions, 88 changer transitions 0/406 dead transitions. [2024-06-28 01:22:46,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 406 transitions, 5205 flow [2024-06-28 01:22:46,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:22:46,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:22:46,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 200 transitions. [2024-06-28 01:22:46,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-28 01:22:46,098 INFO L175 Difference]: Start difference. First operand has 463 places, 377 transitions, 4259 flow. Second operand 12 states and 200 transitions. [2024-06-28 01:22:46,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 406 transitions, 5205 flow [2024-06-28 01:22:48,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 406 transitions, 5037 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:22:48,852 INFO L231 Difference]: Finished difference. Result has 465 places, 377 transitions, 4271 flow [2024-06-28 01:22:48,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4091, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4271, PETRI_PLACES=465, PETRI_TRANSITIONS=377} [2024-06-28 01:22:48,852 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 424 predicate places. [2024-06-28 01:22:48,852 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 377 transitions, 4271 flow [2024-06-28 01:22:48,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:48,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:48,853 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 01:22:48,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 01:22:48,853 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:48,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:48,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1737673813, now seen corresponding path program 11 times [2024-06-28 01:22:48,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:48,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976851803] [2024-06-28 01:22:48,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:48,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:50,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:50,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:50,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976851803] [2024-06-28 01:22:50,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976851803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:50,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:50,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:22:50,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155590227] [2024-06-28 01:22:50,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:50,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:22:50,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:50,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:22:50,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:22:50,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:22:50,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 377 transitions, 4271 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:50,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:50,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:22:50,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:52,435 INFO L124 PetriNetUnfolderBase]: 3297/7404 cut-off events. [2024-06-28 01:22:52,435 INFO L125 PetriNetUnfolderBase]: For 388573/388573 co-relation queries the response was YES. [2024-06-28 01:22:52,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35853 conditions, 7404 events. 3297/7404 cut-off events. For 388573/388573 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 68374 event pairs, 1371 based on Foata normal form. 6/6938 useless extension candidates. Maximal degree in co-relation 35635. Up to 5410 conditions per place. [2024-06-28 01:22:52,560 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 312 selfloop transitions, 92 changer transitions 0/413 dead transitions. [2024-06-28 01:22:52,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 413 transitions, 5287 flow [2024-06-28 01:22:52,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:22:52,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:22:52,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 206 transitions. [2024-06-28 01:22:52,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46396396396396394 [2024-06-28 01:22:52,561 INFO L175 Difference]: Start difference. First operand has 465 places, 377 transitions, 4271 flow. Second operand 12 states and 206 transitions. [2024-06-28 01:22:52,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 413 transitions, 5287 flow [2024-06-28 01:22:55,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 413 transitions, 5113 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:22:55,338 INFO L231 Difference]: Finished difference. Result has 468 places, 378 transitions, 4296 flow [2024-06-28 01:22:55,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4097, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4296, PETRI_PLACES=468, PETRI_TRANSITIONS=378} [2024-06-28 01:22:55,338 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 427 predicate places. [2024-06-28 01:22:55,338 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 378 transitions, 4296 flow [2024-06-28 01:22:55,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:55,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:55,339 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 01:22:55,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 01:22:55,339 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:55,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:55,339 INFO L85 PathProgramCache]: Analyzing trace with hash 297450791, now seen corresponding path program 12 times [2024-06-28 01:22:55,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:55,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778433482] [2024-06-28 01:22:55,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:55,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:56,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:56,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:56,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778433482] [2024-06-28 01:22:56,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778433482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:56,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:56,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:22:56,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427118407] [2024-06-28 01:22:56,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:56,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:22:56,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:56,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:22:56,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:22:56,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:22:56,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 378 transitions, 4296 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:56,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:56,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:22:56,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:58,900 INFO L124 PetriNetUnfolderBase]: 3334/7517 cut-off events. [2024-06-28 01:22:58,900 INFO L125 PetriNetUnfolderBase]: For 394751/394751 co-relation queries the response was YES. [2024-06-28 01:22:59,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36403 conditions, 7517 events. 3334/7517 cut-off events. For 394751/394751 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 69839 event pairs, 1410 based on Foata normal form. 6/7043 useless extension candidates. Maximal degree in co-relation 36183. Up to 5499 conditions per place. [2024-06-28 01:22:59,026 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 282 selfloop transitions, 123 changer transitions 0/414 dead transitions. [2024-06-28 01:22:59,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 414 transitions, 5636 flow [2024-06-28 01:22:59,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:22:59,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:22:59,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 208 transitions. [2024-06-28 01:22:59,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-28 01:22:59,027 INFO L175 Difference]: Start difference. First operand has 468 places, 378 transitions, 4296 flow. Second operand 12 states and 208 transitions. [2024-06-28 01:22:59,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 414 transitions, 5636 flow [2024-06-28 01:23:02,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 414 transitions, 5459 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:23:02,038 INFO L231 Difference]: Finished difference. Result has 471 places, 378 transitions, 4368 flow [2024-06-28 01:23:02,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4119, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4368, PETRI_PLACES=471, PETRI_TRANSITIONS=378} [2024-06-28 01:23:02,039 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 430 predicate places. [2024-06-28 01:23:02,039 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 378 transitions, 4368 flow [2024-06-28 01:23:02,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:02,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:02,040 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 01:23:02,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 01:23:02,040 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:02,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:02,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1728745813, now seen corresponding path program 13 times [2024-06-28 01:23:02,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:02,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845340707] [2024-06-28 01:23:02,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:02,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:03,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:03,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:03,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845340707] [2024-06-28 01:23:03,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845340707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:03,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:03,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:23:03,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814595180] [2024-06-28 01:23:03,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:03,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:23:03,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:03,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:23:03,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:23:03,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:23:03,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 378 transitions, 4368 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:03,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:03,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:23:03,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:05,994 INFO L124 PetriNetUnfolderBase]: 3324/7503 cut-off events. [2024-06-28 01:23:05,994 INFO L125 PetriNetUnfolderBase]: For 324989/324989 co-relation queries the response was YES. [2024-06-28 01:23:06,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35196 conditions, 7503 events. 3324/7503 cut-off events. For 324989/324989 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 69757 event pairs, 1441 based on Foata normal form. 8/7028 useless extension candidates. Maximal degree in co-relation 34975. Up to 5613 conditions per place. [2024-06-28 01:23:06,130 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 275 selfloop transitions, 123 changer transitions 0/407 dead transitions. [2024-06-28 01:23:06,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 407 transitions, 5316 flow [2024-06-28 01:23:06,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:23:06,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:23:06,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 201 transitions. [2024-06-28 01:23:06,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527027027027027 [2024-06-28 01:23:06,131 INFO L175 Difference]: Start difference. First operand has 471 places, 378 transitions, 4368 flow. Second operand 12 states and 201 transitions. [2024-06-28 01:23:06,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 407 transitions, 5316 flow [2024-06-28 01:23:08,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 407 transitions, 5028 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 01:23:08,962 INFO L231 Difference]: Finished difference. Result has 472 places, 378 transitions, 4330 flow [2024-06-28 01:23:08,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4080, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4330, PETRI_PLACES=472, PETRI_TRANSITIONS=378} [2024-06-28 01:23:08,962 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 431 predicate places. [2024-06-28 01:23:08,962 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 378 transitions, 4330 flow [2024-06-28 01:23:08,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:08,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:08,963 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 01:23:08,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 01:23:08,963 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:08,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:08,963 INFO L85 PathProgramCache]: Analyzing trace with hash 297767921, now seen corresponding path program 14 times [2024-06-28 01:23:08,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:08,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141157355] [2024-06-28 01:23:08,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:08,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:10,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:10,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:10,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141157355] [2024-06-28 01:23:10,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141157355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:10,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:10,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:23:10,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501016048] [2024-06-28 01:23:10,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:10,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:23:10,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:10,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:23:10,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:23:10,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:23:10,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 378 transitions, 4330 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:10,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:10,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:23:10,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:12,659 INFO L124 PetriNetUnfolderBase]: 3462/7898 cut-off events. [2024-06-28 01:23:12,660 INFO L125 PetriNetUnfolderBase]: For 410261/410261 co-relation queries the response was YES. [2024-06-28 01:23:12,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37781 conditions, 7898 events. 3462/7898 cut-off events. For 410261/410261 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 74505 event pairs, 1497 based on Foata normal form. 6/7424 useless extension candidates. Maximal degree in co-relation 37563. Up to 3703 conditions per place. [2024-06-28 01:23:12,790 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 286 selfloop transitions, 123 changer transitions 0/418 dead transitions. [2024-06-28 01:23:12,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 418 transitions, 5696 flow [2024-06-28 01:23:12,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:23:12,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:23:12,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 211 transitions. [2024-06-28 01:23:12,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4752252252252252 [2024-06-28 01:23:12,792 INFO L175 Difference]: Start difference. First operand has 472 places, 378 transitions, 4330 flow. Second operand 12 states and 211 transitions. [2024-06-28 01:23:12,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 418 transitions, 5696 flow [2024-06-28 01:23:15,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 418 transitions, 5433 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 01:23:15,937 INFO L231 Difference]: Finished difference. Result has 473 places, 378 transitions, 4316 flow [2024-06-28 01:23:15,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4067, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4316, PETRI_PLACES=473, PETRI_TRANSITIONS=378} [2024-06-28 01:23:15,938 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 432 predicate places. [2024-06-28 01:23:15,938 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 378 transitions, 4316 flow [2024-06-28 01:23:15,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:15,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:15,938 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 01:23:15,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 01:23:15,938 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:15,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:15,939 INFO L85 PathProgramCache]: Analyzing trace with hash -268354901, now seen corresponding path program 15 times [2024-06-28 01:23:15,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:15,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205916098] [2024-06-28 01:23:15,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:15,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:17,900 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 01:23:17,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:17,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205916098] [2024-06-28 01:23:17,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205916098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:17,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:17,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:23:17,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164251624] [2024-06-28 01:23:17,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:17,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:23:17,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:17,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:23:17,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:23:18,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:23:18,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 378 transitions, 4316 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:18,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:18,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:23:18,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:20,255 INFO L124 PetriNetUnfolderBase]: 3516/7977 cut-off events. [2024-06-28 01:23:20,255 INFO L125 PetriNetUnfolderBase]: For 442183/442183 co-relation queries the response was YES. [2024-06-28 01:23:20,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38364 conditions, 7977 events. 3516/7977 cut-off events. For 442183/442183 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 75387 event pairs, 1597 based on Foata normal form. 8/7482 useless extension candidates. Maximal degree in co-relation 38146. Up to 6251 conditions per place. [2024-06-28 01:23:20,393 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 335 selfloop transitions, 63 changer transitions 0/407 dead transitions. [2024-06-28 01:23:20,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 407 transitions, 5264 flow [2024-06-28 01:23:20,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:23:20,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:23:20,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 197 transitions. [2024-06-28 01:23:20,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4436936936936937 [2024-06-28 01:23:20,394 INFO L175 Difference]: Start difference. First operand has 473 places, 378 transitions, 4316 flow. Second operand 12 states and 197 transitions. [2024-06-28 01:23:20,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 407 transitions, 5264 flow [2024-06-28 01:23:23,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 407 transitions, 5019 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:23:23,851 INFO L231 Difference]: Finished difference. Result has 475 places, 378 transitions, 4201 flow [2024-06-28 01:23:23,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4071, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4201, PETRI_PLACES=475, PETRI_TRANSITIONS=378} [2024-06-28 01:23:23,852 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 434 predicate places. [2024-06-28 01:23:23,852 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 378 transitions, 4201 flow [2024-06-28 01:23:23,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:23,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:23,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:23,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 01:23:23,852 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:23,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:23,853 INFO L85 PathProgramCache]: Analyzing trace with hash -268086131, now seen corresponding path program 16 times [2024-06-28 01:23:23,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:23,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225046049] [2024-06-28 01:23:23,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:23,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:25,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:25,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:25,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225046049] [2024-06-28 01:23:25,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225046049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:25,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:25,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:23:25,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33486367] [2024-06-28 01:23:25,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:25,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:23:25,466 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 13 interpolants. [2024-06-28 01:23:25,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:23:25,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:23:25,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 378 transitions, 4201 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:25,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:25,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:23:25,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:27,810 INFO L124 PetriNetUnfolderBase]: 3553/8125 cut-off events. [2024-06-28 01:23:27,811 INFO L125 PetriNetUnfolderBase]: For 418108/418108 co-relation queries the response was YES. [2024-06-28 01:23:27,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38632 conditions, 8125 events. 3553/8125 cut-off events. For 418108/418108 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 77419 event pairs, 1585 based on Foata normal form. 6/7616 useless extension candidates. Maximal degree in co-relation 38413. Up to 5792 conditions per place. [2024-06-28 01:23:27,944 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 335 selfloop transitions, 70 changer transitions 0/414 dead transitions. [2024-06-28 01:23:27,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 414 transitions, 5549 flow [2024-06-28 01:23:27,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:23:27,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:23:27,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 205 transitions. [2024-06-28 01:23:27,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617117117117117 [2024-06-28 01:23:27,945 INFO L175 Difference]: Start difference. First operand has 475 places, 378 transitions, 4201 flow. Second operand 12 states and 205 transitions. [2024-06-28 01:23:27,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 414 transitions, 5549 flow [2024-06-28 01:23:31,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 414 transitions, 5425 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:23:31,358 INFO L231 Difference]: Finished difference. Result has 477 places, 378 transitions, 4220 flow [2024-06-28 01:23:31,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4077, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4220, PETRI_PLACES=477, PETRI_TRANSITIONS=378} [2024-06-28 01:23:31,359 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 436 predicate places. [2024-06-28 01:23:31,359 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 378 transitions, 4220 flow [2024-06-28 01:23:31,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:31,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:31,359 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 01:23:31,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 01:23:31,359 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:31,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:31,359 INFO L85 PathProgramCache]: Analyzing trace with hash -268095431, now seen corresponding path program 17 times [2024-06-28 01:23:31,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:31,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000852159] [2024-06-28 01:23:31,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:31,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:32,560 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 01:23:32,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:32,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000852159] [2024-06-28 01:23:32,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000852159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:32,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:32,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:23:32,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953077441] [2024-06-28 01:23:32,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:32,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:23:32,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:32,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:23:32,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:23:32,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:23:32,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 378 transitions, 4220 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:32,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:32,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:23:32,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:34,875 INFO L124 PetriNetUnfolderBase]: 3543/8095 cut-off events. [2024-06-28 01:23:34,876 INFO L125 PetriNetUnfolderBase]: For 346396/346396 co-relation queries the response was YES. [2024-06-28 01:23:34,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37275 conditions, 8095 events. 3543/8095 cut-off events. For 346396/346396 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 77070 event pairs, 1612 based on Foata normal form. 8/7585 useless extension candidates. Maximal degree in co-relation 37055. Up to 6260 conditions per place. [2024-06-28 01:23:35,024 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 328 selfloop transitions, 70 changer transitions 0/407 dead transitions. [2024-06-28 01:23:35,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 407 transitions, 5168 flow [2024-06-28 01:23:35,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:23:35,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:23:35,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 199 transitions. [2024-06-28 01:23:35,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44819819819819817 [2024-06-28 01:23:35,025 INFO L175 Difference]: Start difference. First operand has 477 places, 378 transitions, 4220 flow. Second operand 12 states and 199 transitions. [2024-06-28 01:23:35,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 407 transitions, 5168 flow [2024-06-28 01:23:38,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 407 transitions, 5002 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 01:23:38,167 INFO L231 Difference]: Finished difference. Result has 480 places, 378 transitions, 4198 flow [2024-06-28 01:23:38,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4054, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4198, PETRI_PLACES=480, PETRI_TRANSITIONS=378} [2024-06-28 01:23:38,167 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 439 predicate places. [2024-06-28 01:23:38,167 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 378 transitions, 4198 flow [2024-06-28 01:23:38,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:38,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:38,167 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 01:23:38,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 01:23:38,168 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:38,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:38,168 INFO L85 PathProgramCache]: Analyzing trace with hash -248500997, now seen corresponding path program 19 times [2024-06-28 01:23:38,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:38,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180070380] [2024-06-28 01:23:38,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:38,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:39,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:39,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:39,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180070380] [2024-06-28 01:23:39,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180070380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:39,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:39,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:23:39,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230611517] [2024-06-28 01:23:39,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:39,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:23:39,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:39,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:23:39,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:23:39,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:23:39,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 378 transitions, 4198 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:39,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:39,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:23:39,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:41,737 INFO L124 PetriNetUnfolderBase]: 3560/8184 cut-off events. [2024-06-28 01:23:41,737 INFO L125 PetriNetUnfolderBase]: For 269406/269409 co-relation queries the response was YES. [2024-06-28 01:23:41,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37703 conditions, 8184 events. 3560/8184 cut-off events. For 269406/269409 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 78239 event pairs, 1627 based on Foata normal form. 2/7649 useless extension candidates. Maximal degree in co-relation 37482. Up to 6388 conditions per place. [2024-06-28 01:23:41,891 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 318 selfloop transitions, 74 changer transitions 0/401 dead transitions. [2024-06-28 01:23:41,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 401 transitions, 5110 flow [2024-06-28 01:23:41,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:41,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:41,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-28 01:23:41,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 01:23:41,892 INFO L175 Difference]: Start difference. First operand has 480 places, 378 transitions, 4198 flow. Second operand 11 states and 185 transitions. [2024-06-28 01:23:41,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 401 transitions, 5110 flow [2024-06-28 01:23:45,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 401 transitions, 4944 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 01:23:45,501 INFO L231 Difference]: Finished difference. Result has 480 places, 379 transitions, 4230 flow [2024-06-28 01:23:45,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4034, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4230, PETRI_PLACES=480, PETRI_TRANSITIONS=379} [2024-06-28 01:23:45,501 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 439 predicate places. [2024-06-28 01:23:45,501 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 379 transitions, 4230 flow [2024-06-28 01:23:45,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:45,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:45,502 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 01:23:45,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 01:23:45,502 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:45,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:45,503 INFO L85 PathProgramCache]: Analyzing trace with hash -255650837, now seen corresponding path program 20 times [2024-06-28 01:23:45,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:45,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379624413] [2024-06-28 01:23:45,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:45,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:46,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:46,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:46,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379624413] [2024-06-28 01:23:46,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379624413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:46,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:46,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:23:46,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590100999] [2024-06-28 01:23:46,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:46,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:23:46,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:46,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:23:46,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:23:47,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:23:47,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 379 transitions, 4230 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:47,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:47,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:23:47,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:49,413 INFO L124 PetriNetUnfolderBase]: 3577/8201 cut-off events. [2024-06-28 01:23:49,413 INFO L125 PetriNetUnfolderBase]: For 274572/274575 co-relation queries the response was YES. [2024-06-28 01:23:49,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38037 conditions, 8201 events. 3577/8201 cut-off events. For 274572/274575 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 78356 event pairs, 1640 based on Foata normal form. 2/7672 useless extension candidates. Maximal degree in co-relation 37816. Up to 6419 conditions per place. [2024-06-28 01:23:49,549 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 318 selfloop transitions, 75 changer transitions 0/402 dead transitions. [2024-06-28 01:23:49,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 402 transitions, 5144 flow [2024-06-28 01:23:49,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:49,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:49,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-28 01:23:49,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-28 01:23:49,551 INFO L175 Difference]: Start difference. First operand has 480 places, 379 transitions, 4230 flow. Second operand 11 states and 184 transitions. [2024-06-28 01:23:49,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 402 transitions, 5144 flow [2024-06-28 01:23:53,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 402 transitions, 4958 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 01:23:53,074 INFO L231 Difference]: Finished difference. Result has 482 places, 380 transitions, 4244 flow [2024-06-28 01:23:53,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4044, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4244, PETRI_PLACES=482, PETRI_TRANSITIONS=380} [2024-06-28 01:23:53,074 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 441 predicate places. [2024-06-28 01:23:53,075 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 380 transitions, 4244 flow [2024-06-28 01:23:53,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:53,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:53,075 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 01:23:53,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 01:23:53,075 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:53,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:53,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1216985335, now seen corresponding path program 21 times [2024-06-28 01:23:53,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:53,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20143002] [2024-06-28 01:23:53,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:53,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:54,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:54,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:54,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20143002] [2024-06-28 01:23:54,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20143002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:54,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:54,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:23:54,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249862217] [2024-06-28 01:23:54,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:54,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:23:54,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:54,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:23:54,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:23:54,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:23:54,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 380 transitions, 4244 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:54,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:54,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:23:54,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:56,555 INFO L124 PetriNetUnfolderBase]: 3594/8243 cut-off events. [2024-06-28 01:23:56,556 INFO L125 PetriNetUnfolderBase]: For 280244/280244 co-relation queries the response was YES. [2024-06-28 01:23:56,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38326 conditions, 8243 events. 3594/8243 cut-off events. For 280244/280244 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 78931 event pairs, 1659 based on Foata normal form. 2/7714 useless extension candidates. Maximal degree in co-relation 38104. Up to 6623 conditions per place. [2024-06-28 01:23:56,706 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 376 selfloop transitions, 18 changer transitions 0/403 dead transitions. [2024-06-28 01:23:56,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 403 transitions, 5162 flow [2024-06-28 01:23:56,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:56,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:56,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-28 01:23:56,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226044226044226 [2024-06-28 01:23:56,708 INFO L175 Difference]: Start difference. First operand has 482 places, 380 transitions, 4244 flow. Second operand 11 states and 172 transitions. [2024-06-28 01:23:56,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 403 transitions, 5162 flow [2024-06-28 01:23:59,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 403 transitions, 4972 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 01:23:59,823 INFO L231 Difference]: Finished difference. Result has 484 places, 381 transitions, 4142 flow [2024-06-28 01:23:59,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4054, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4142, PETRI_PLACES=484, PETRI_TRANSITIONS=381} [2024-06-28 01:23:59,824 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 443 predicate places. [2024-06-28 01:23:59,824 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 381 transitions, 4142 flow [2024-06-28 01:23:59,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:59,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:59,824 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 01:23:59,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 01:23:59,824 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:59,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:59,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1000413325, now seen corresponding path program 22 times [2024-06-28 01:23:59,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:59,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220299985] [2024-06-28 01:23:59,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:59,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:01,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:01,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:01,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220299985] [2024-06-28 01:24:01,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220299985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:01,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:01,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:01,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398555123] [2024-06-28 01:24:01,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:01,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:01,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:01,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:01,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:01,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:24:01,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 381 transitions, 4142 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:01,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:01,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:24:01,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:03,288 INFO L124 PetriNetUnfolderBase]: 3665/8414 cut-off events. [2024-06-28 01:24:03,288 INFO L125 PetriNetUnfolderBase]: For 402845/402845 co-relation queries the response was YES. [2024-06-28 01:24:03,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39060 conditions, 8414 events. 3665/8414 cut-off events. For 402845/402845 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 80856 event pairs, 1674 based on Foata normal form. 10/7880 useless extension candidates. Maximal degree in co-relation 38837. Up to 6405 conditions per place. [2024-06-28 01:24:03,450 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 306 selfloop transitions, 92 changer transitions 0/407 dead transitions. [2024-06-28 01:24:03,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 407 transitions, 5124 flow [2024-06-28 01:24:03,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:03,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:03,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-28 01:24:03,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4668304668304668 [2024-06-28 01:24:03,451 INFO L175 Difference]: Start difference. First operand has 484 places, 381 transitions, 4142 flow. Second operand 11 states and 190 transitions. [2024-06-28 01:24:03,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 407 transitions, 5124 flow [2024-06-28 01:24:06,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 407 transitions, 5046 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 01:24:06,775 INFO L231 Difference]: Finished difference. Result has 486 places, 382 transitions, 4304 flow [2024-06-28 01:24:06,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4064, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4304, PETRI_PLACES=486, PETRI_TRANSITIONS=382} [2024-06-28 01:24:06,776 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 445 predicate places. [2024-06-28 01:24:06,776 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 382 transitions, 4304 flow [2024-06-28 01:24:06,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:06,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:06,776 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 01:24:06,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 01:24:06,777 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:06,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:06,777 INFO L85 PathProgramCache]: Analyzing trace with hash -255858227, now seen corresponding path program 23 times [2024-06-28 01:24:06,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:06,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942967484] [2024-06-28 01:24:06,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:06,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:08,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:08,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:08,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942967484] [2024-06-28 01:24:08,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942967484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:08,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:08,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:08,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14168889] [2024-06-28 01:24:08,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:08,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:08,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:08,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:08,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:08,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:24:08,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 382 transitions, 4304 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:08,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:08,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:24:08,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:10,707 INFO L124 PetriNetUnfolderBase]: 3682/8461 cut-off events. [2024-06-28 01:24:10,708 INFO L125 PetriNetUnfolderBase]: For 294392/294392 co-relation queries the response was YES. [2024-06-28 01:24:10,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39583 conditions, 8461 events. 3682/8461 cut-off events. For 294392/294392 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 81488 event pairs, 1678 based on Foata normal form. 2/7918 useless extension candidates. Maximal degree in co-relation 39359. Up to 6528 conditions per place. [2024-06-28 01:24:10,876 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 322 selfloop transitions, 78 changer transitions 0/409 dead transitions. [2024-06-28 01:24:10,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 409 transitions, 5252 flow [2024-06-28 01:24:10,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:10,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:10,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-28 01:24:10,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-28 01:24:10,878 INFO L175 Difference]: Start difference. First operand has 486 places, 382 transitions, 4304 flow. Second operand 11 states and 188 transitions. [2024-06-28 01:24:10,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 409 transitions, 5252 flow [2024-06-28 01:24:14,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 409 transitions, 5030 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 01:24:14,444 INFO L231 Difference]: Finished difference. Result has 488 places, 383 transitions, 4294 flow [2024-06-28 01:24:14,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4082, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4294, PETRI_PLACES=488, PETRI_TRANSITIONS=383} [2024-06-28 01:24:14,444 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 447 predicate places. [2024-06-28 01:24:14,444 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 383 transitions, 4294 flow [2024-06-28 01:24:14,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:14,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:14,445 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 01:24:14,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 01:24:14,445 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:14,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:14,446 INFO L85 PathProgramCache]: Analyzing trace with hash 365112183, now seen corresponding path program 24 times [2024-06-28 01:24:14,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:14,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685132041] [2024-06-28 01:24:14,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:14,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:15,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:15,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:15,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685132041] [2024-06-28 01:24:15,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685132041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:15,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:15,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:15,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569492406] [2024-06-28 01:24:15,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:15,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:15,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:15,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:15,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:15,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:24:15,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 383 transitions, 4294 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:15,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:15,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:24:15,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:18,060 INFO L124 PetriNetUnfolderBase]: 3699/8502 cut-off events. [2024-06-28 01:24:18,061 INFO L125 PetriNetUnfolderBase]: For 300479/300479 co-relation queries the response was YES. [2024-06-28 01:24:18,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39880 conditions, 8502 events. 3699/8502 cut-off events. For 300479/300479 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 81863 event pairs, 1700 based on Foata normal form. 2/7954 useless extension candidates. Maximal degree in co-relation 39655. Up to 6174 conditions per place. [2024-06-28 01:24:18,208 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 212 selfloop transitions, 185 changer transitions 0/406 dead transitions. [2024-06-28 01:24:18,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 406 transitions, 5224 flow [2024-06-28 01:24:18,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:18,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:18,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-28 01:24:18,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-28 01:24:18,209 INFO L175 Difference]: Start difference. First operand has 488 places, 383 transitions, 4294 flow. Second operand 11 states and 189 transitions. [2024-06-28 01:24:18,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 406 transitions, 5224 flow [2024-06-28 01:24:21,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 406 transitions, 5026 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:21,481 INFO L231 Difference]: Finished difference. Result has 491 places, 384 transitions, 4524 flow [2024-06-28 01:24:21,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4096, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4524, PETRI_PLACES=491, PETRI_TRANSITIONS=384} [2024-06-28 01:24:21,482 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 450 predicate places. [2024-06-28 01:24:21,482 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 384 transitions, 4524 flow [2024-06-28 01:24:21,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:21,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:21,482 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 01:24:21,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 01:24:21,482 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:21,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:21,483 INFO L85 PathProgramCache]: Analyzing trace with hash -148469281, now seen corresponding path program 25 times [2024-06-28 01:24:21,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:21,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455280395] [2024-06-28 01:24:21,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:21,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:22,828 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 01:24:22,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:22,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455280395] [2024-06-28 01:24:22,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455280395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:22,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:22,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:22,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981371370] [2024-06-28 01:24:22,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:22,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:22,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:22,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:22,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:22,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:24:22,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 384 transitions, 4524 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:22,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:22,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:24:22,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:25,220 INFO L124 PetriNetUnfolderBase]: 3736/8490 cut-off events. [2024-06-28 01:24:25,220 INFO L125 PetriNetUnfolderBase]: For 342961/342961 co-relation queries the response was YES. [2024-06-28 01:24:25,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41299 conditions, 8490 events. 3736/8490 cut-off events. For 342961/342961 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 81283 event pairs, 1688 based on Foata normal form. 2/7960 useless extension candidates. Maximal degree in co-relation 41073. Up to 6406 conditions per place. [2024-06-28 01:24:25,376 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 282 selfloop transitions, 122 changer transitions 0/413 dead transitions. [2024-06-28 01:24:25,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 413 transitions, 5888 flow [2024-06-28 01:24:25,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:25,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:25,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-28 01:24:25,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-28 01:24:25,377 INFO L175 Difference]: Start difference. First operand has 491 places, 384 transitions, 4524 flow. Second operand 11 states and 189 transitions. [2024-06-28 01:24:25,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 413 transitions, 5888 flow [2024-06-28 01:24:28,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 413 transitions, 5470 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-28 01:24:28,853 INFO L231 Difference]: Finished difference. Result has 493 places, 386 transitions, 4464 flow [2024-06-28 01:24:28,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4106, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4464, PETRI_PLACES=493, PETRI_TRANSITIONS=386} [2024-06-28 01:24:28,854 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 452 predicate places. [2024-06-28 01:24:28,854 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 386 transitions, 4464 flow [2024-06-28 01:24:28,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:28,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:28,854 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 01:24:28,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 01:24:28,854 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:28,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:28,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1463085705, now seen corresponding path program 26 times [2024-06-28 01:24:28,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:28,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83919523] [2024-06-28 01:24:28,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:28,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:29,970 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 01:24:29,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:29,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83919523] [2024-06-28 01:24:29,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83919523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:29,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:29,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:29,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488049473] [2024-06-28 01:24:29,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:29,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:29,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:29,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:29,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:30,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:24:30,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 386 transitions, 4464 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:30,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:30,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:24:30,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:32,411 INFO L124 PetriNetUnfolderBase]: 3753/8601 cut-off events. [2024-06-28 01:24:32,411 INFO L125 PetriNetUnfolderBase]: For 348858/348858 co-relation queries the response was YES. [2024-06-28 01:24:32,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41431 conditions, 8601 events. 3753/8601 cut-off events. For 348858/348858 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 82816 event pairs, 1710 based on Foata normal form. 2/8048 useless extension candidates. Maximal degree in co-relation 41204. Up to 6796 conditions per place. [2024-06-28 01:24:32,581 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 337 selfloop transitions, 63 changer transitions 0/409 dead transitions. [2024-06-28 01:24:32,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 409 transitions, 5404 flow [2024-06-28 01:24:32,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:32,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:32,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-28 01:24:32,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-28 01:24:32,582 INFO L175 Difference]: Start difference. First operand has 493 places, 386 transitions, 4464 flow. Second operand 11 states and 181 transitions. [2024-06-28 01:24:32,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 409 transitions, 5404 flow [2024-06-28 01:24:36,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 409 transitions, 5183 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:36,540 INFO L231 Difference]: Finished difference. Result has 497 places, 387 transitions, 4431 flow [2024-06-28 01:24:36,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4243, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4431, PETRI_PLACES=497, PETRI_TRANSITIONS=387} [2024-06-28 01:24:36,540 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 456 predicate places. [2024-06-28 01:24:36,540 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 387 transitions, 4431 flow [2024-06-28 01:24:36,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:36,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:36,541 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 01:24:36,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-28 01:24:36,541 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:36,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:36,541 INFO L85 PathProgramCache]: Analyzing trace with hash -141112051, now seen corresponding path program 27 times [2024-06-28 01:24:36,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:36,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55524023] [2024-06-28 01:24:36,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:36,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:37,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:37,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:37,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55524023] [2024-06-28 01:24:37,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55524023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:37,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:37,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:37,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736654014] [2024-06-28 01:24:37,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:37,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:37,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:37,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:37,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:37,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:24:37,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 387 transitions, 4431 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:37,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:37,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:24:37,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:40,170 INFO L124 PetriNetUnfolderBase]: 3770/8641 cut-off events. [2024-06-28 01:24:40,171 INFO L125 PetriNetUnfolderBase]: For 351945/351945 co-relation queries the response was YES. [2024-06-28 01:24:40,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41627 conditions, 8641 events. 3770/8641 cut-off events. For 351945/351945 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 83355 event pairs, 1713 based on Foata normal form. 2/8085 useless extension candidates. Maximal degree in co-relation 41398. Up to 6569 conditions per place. [2024-06-28 01:24:40,328 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 284 selfloop transitions, 117 changer transitions 0/410 dead transitions. [2024-06-28 01:24:40,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 410 transitions, 5363 flow [2024-06-28 01:24:40,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:40,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:40,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-28 01:24:40,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 01:24:40,330 INFO L175 Difference]: Start difference. First operand has 497 places, 387 transitions, 4431 flow. Second operand 11 states and 185 transitions. [2024-06-28 01:24:40,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 410 transitions, 5363 flow [2024-06-28 01:24:43,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 410 transitions, 5185 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-28 01:24:43,771 INFO L231 Difference]: Finished difference. Result has 499 places, 388 transitions, 4539 flow [2024-06-28 01:24:43,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4253, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4539, PETRI_PLACES=499, PETRI_TRANSITIONS=388} [2024-06-28 01:24:43,771 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 458 predicate places. [2024-06-28 01:24:43,771 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 388 transitions, 4539 flow [2024-06-28 01:24:43,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:43,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:43,772 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 01:24:43,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-28 01:24:43,772 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:43,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:43,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1463080125, now seen corresponding path program 28 times [2024-06-28 01:24:43,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:43,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266454008] [2024-06-28 01:24:43,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:43,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:44,956 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 01:24:44,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:44,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266454008] [2024-06-28 01:24:44,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266454008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:44,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:44,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:44,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104611827] [2024-06-28 01:24:44,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:44,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:44,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:44,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:44,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:45,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:24:45,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 388 transitions, 4539 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:45,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:45,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:24:45,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:47,447 INFO L124 PetriNetUnfolderBase]: 3807/8723 cut-off events. [2024-06-28 01:24:47,448 INFO L125 PetriNetUnfolderBase]: For 392159/392159 co-relation queries the response was YES. [2024-06-28 01:24:47,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42851 conditions, 8723 events. 3807/8723 cut-off events. For 392159/392159 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 84296 event pairs, 1717 based on Foata normal form. 2/8164 useless extension candidates. Maximal degree in co-relation 42621. Up to 6818 conditions per place. [2024-06-28 01:24:47,591 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 343 selfloop transitions, 65 changer transitions 0/417 dead transitions. [2024-06-28 01:24:47,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 417 transitions, 5925 flow [2024-06-28 01:24:47,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:47,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:47,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-28 01:24:47,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-28 01:24:47,592 INFO L175 Difference]: Start difference. First operand has 499 places, 388 transitions, 4539 flow. Second operand 11 states and 186 transitions. [2024-06-28 01:24:47,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 417 transitions, 5925 flow [2024-06-28 01:24:50,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 417 transitions, 5666 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:50,817 INFO L231 Difference]: Finished difference. Result has 503 places, 390 transitions, 4532 flow [2024-06-28 01:24:50,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4280, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4532, PETRI_PLACES=503, PETRI_TRANSITIONS=390} [2024-06-28 01:24:50,817 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 462 predicate places. [2024-06-28 01:24:50,817 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 390 transitions, 4532 flow [2024-06-28 01:24:50,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:50,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:50,817 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 01:24:50,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-28 01:24:50,818 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:50,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:50,818 INFO L85 PathProgramCache]: Analyzing trace with hash -2034234645, now seen corresponding path program 29 times [2024-06-28 01:24:50,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:50,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592519978] [2024-06-28 01:24:50,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:50,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:51,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:51,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:51,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592519978] [2024-06-28 01:24:51,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592519978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:51,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:51,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:51,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193952656] [2024-06-28 01:24:51,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:51,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:51,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:51,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:51,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:52,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:24:52,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 390 transitions, 4532 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:52,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:52,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:24:52,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:54,458 INFO L124 PetriNetUnfolderBase]: 3858/8864 cut-off events. [2024-06-28 01:24:54,459 INFO L125 PetriNetUnfolderBase]: For 491235/491235 co-relation queries the response was YES. [2024-06-28 01:24:54,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42816 conditions, 8864 events. 3858/8864 cut-off events. For 491235/491235 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 86017 event pairs, 1761 based on Foata normal form. 10/8303 useless extension candidates. Maximal degree in co-relation 42585. Up to 6357 conditions per place. [2024-06-28 01:24:54,626 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 233 selfloop transitions, 173 changer transitions 0/415 dead transitions. [2024-06-28 01:24:54,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 415 transitions, 5482 flow [2024-06-28 01:24:54,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:54,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:54,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-28 01:24:54,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47911547911547914 [2024-06-28 01:24:54,628 INFO L175 Difference]: Start difference. First operand has 503 places, 390 transitions, 4532 flow. Second operand 11 states and 195 transitions. [2024-06-28 01:24:54,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 415 transitions, 5482 flow [2024-06-28 01:24:58,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 415 transitions, 5299 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:58,343 INFO L231 Difference]: Finished difference. Result has 507 places, 390 transitions, 4701 flow [2024-06-28 01:24:58,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4349, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4701, PETRI_PLACES=507, PETRI_TRANSITIONS=390} [2024-06-28 01:24:58,344 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 466 predicate places. [2024-06-28 01:24:58,344 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 390 transitions, 4701 flow [2024-06-28 01:24:58,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:58,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:58,344 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 01:24:58,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-28 01:24:58,344 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:58,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:58,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1470437355, now seen corresponding path program 30 times [2024-06-28 01:24:58,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:58,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253294759] [2024-06-28 01:24:58,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:58,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:59,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:59,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:59,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253294759] [2024-06-28 01:24:59,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253294759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:59,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:59,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:59,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484046671] [2024-06-28 01:24:59,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:59,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:59,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:59,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:59,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:59,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:24:59,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 390 transitions, 4701 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:59,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:59,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:24:59,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:02,102 INFO L124 PetriNetUnfolderBase]: 3909/9003 cut-off events. [2024-06-28 01:25:02,102 INFO L125 PetriNetUnfolderBase]: For 455876/455876 co-relation queries the response was YES. [2024-06-28 01:25:02,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42889 conditions, 9003 events. 3909/9003 cut-off events. For 455876/455876 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 87747 event pairs, 1792 based on Foata normal form. 10/8432 useless extension candidates. Maximal degree in co-relation 42656. Up to 6961 conditions per place. [2024-06-28 01:25:02,284 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 335 selfloop transitions, 71 changer transitions 0/415 dead transitions. [2024-06-28 01:25:02,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 415 transitions, 5651 flow [2024-06-28 01:25:02,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:02,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:02,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-28 01:25:02,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 01:25:02,285 INFO L175 Difference]: Start difference. First operand has 507 places, 390 transitions, 4701 flow. Second operand 11 states and 185 transitions. [2024-06-28 01:25:02,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 415 transitions, 5651 flow [2024-06-28 01:25:06,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 415 transitions, 5261 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 01:25:06,416 INFO L231 Difference]: Finished difference. Result has 509 places, 390 transitions, 4459 flow [2024-06-28 01:25:06,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4311, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4459, PETRI_PLACES=509, PETRI_TRANSITIONS=390} [2024-06-28 01:25:06,417 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 468 predicate places. [2024-06-28 01:25:06,417 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 390 transitions, 4459 flow [2024-06-28 01:25:06,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:06,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:06,417 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 01:25:06,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-28 01:25:06,418 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:06,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:06,418 INFO L85 PathProgramCache]: Analyzing trace with hash -2031625309, now seen corresponding path program 31 times [2024-06-28 01:25:06,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:06,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857616270] [2024-06-28 01:25:06,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:06,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:07,671 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 01:25:07,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:07,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857616270] [2024-06-28 01:25:07,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857616270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:07,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:07,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:07,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086694112] [2024-06-28 01:25:07,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:07,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:07,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:07,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:07,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:07,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:25:07,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 390 transitions, 4459 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:07,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:07,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:25:07,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:10,432 INFO L124 PetriNetUnfolderBase]: 3963/9178 cut-off events. [2024-06-28 01:25:10,433 INFO L125 PetriNetUnfolderBase]: For 421068/421068 co-relation queries the response was YES. [2024-06-28 01:25:10,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43014 conditions, 9178 events. 3963/9178 cut-off events. For 421068/421068 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 90081 event pairs, 1808 based on Foata normal form. 8/8591 useless extension candidates. Maximal degree in co-relation 42780. Up to 6878 conditions per place. [2024-06-28 01:25:10,596 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 359 selfloop transitions, 57 changer transitions 0/425 dead transitions. [2024-06-28 01:25:10,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 425 transitions, 5610 flow [2024-06-28 01:25:10,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:10,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:10,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-28 01:25:10,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-28 01:25:10,598 INFO L175 Difference]: Start difference. First operand has 509 places, 390 transitions, 4459 flow. Second operand 11 states and 188 transitions. [2024-06-28 01:25:10,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 425 transitions, 5610 flow [2024-06-28 01:25:14,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 425 transitions, 5468 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 01:25:14,708 INFO L231 Difference]: Finished difference. Result has 512 places, 391 transitions, 4456 flow [2024-06-28 01:25:14,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4319, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4456, PETRI_PLACES=512, PETRI_TRANSITIONS=391} [2024-06-28 01:25:14,709 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 471 predicate places. [2024-06-28 01:25:14,709 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 391 transitions, 4456 flow [2024-06-28 01:25:14,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:14,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:14,709 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 01:25:14,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-28 01:25:14,710 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:14,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:14,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1263634185, now seen corresponding path program 32 times [2024-06-28 01:25:14,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:14,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30592022] [2024-06-28 01:25:14,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:14,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:15,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:15,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:15,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30592022] [2024-06-28 01:25:15,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30592022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:15,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:15,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:15,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002279264] [2024-06-28 01:25:15,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:15,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:15,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:15,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:15,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:16,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:25:16,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 391 transitions, 4456 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:16,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:16,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:25:16,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:18,442 INFO L124 PetriNetUnfolderBase]: 4001/9219 cut-off events. [2024-06-28 01:25:18,442 INFO L125 PetriNetUnfolderBase]: For 393683/393683 co-relation queries the response was YES. [2024-06-28 01:25:18,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42937 conditions, 9219 events. 4001/9219 cut-off events. For 393683/393683 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 90412 event pairs, 1823 based on Foata normal form. 8/8638 useless extension candidates. Maximal degree in co-relation 42701. Up to 7176 conditions per place. [2024-06-28 01:25:18,632 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 361 selfloop transitions, 54 changer transitions 0/424 dead transitions. [2024-06-28 01:25:18,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 424 transitions, 5476 flow [2024-06-28 01:25:18,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:18,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:18,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-28 01:25:18,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 01:25:18,633 INFO L175 Difference]: Start difference. First operand has 512 places, 391 transitions, 4456 flow. Second operand 11 states and 185 transitions. [2024-06-28 01:25:18,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 424 transitions, 5476 flow [2024-06-28 01:25:23,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 424 transitions, 5368 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:25:23,078 INFO L231 Difference]: Finished difference. Result has 515 places, 391 transitions, 4459 flow [2024-06-28 01:25:23,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4348, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4459, PETRI_PLACES=515, PETRI_TRANSITIONS=391} [2024-06-28 01:25:23,079 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 474 predicate places. [2024-06-28 01:25:23,079 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 391 transitions, 4459 flow [2024-06-28 01:25:23,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:23,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:23,079 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 01:25:23,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-28 01:25:23,080 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:23,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:23,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1463295451, now seen corresponding path program 18 times [2024-06-28 01:25:23,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:23,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563323183] [2024-06-28 01:25:23,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:23,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:25,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:25,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:25,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563323183] [2024-06-28 01:25:25,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563323183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:25,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:25,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:25:25,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871581299] [2024-06-28 01:25:25,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:25,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:25:25,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:25,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:25:25,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:25:25,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:25:25,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 391 transitions, 4459 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:25,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:25,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:25:25,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:27,836 INFO L124 PetriNetUnfolderBase]: 4055/9395 cut-off events. [2024-06-28 01:25:27,837 INFO L125 PetriNetUnfolderBase]: For 406393/406393 co-relation queries the response was YES. [2024-06-28 01:25:27,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43623 conditions, 9395 events. 4055/9395 cut-off events. For 406393/406393 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 92846 event pairs, 1940 based on Foata normal form. 8/8801 useless extension candidates. Maximal degree in co-relation 43386. Up to 7269 conditions per place. [2024-06-28 01:25:27,990 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 345 selfloop transitions, 64 changer transitions 0/418 dead transitions. [2024-06-28 01:25:27,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 418 transitions, 5423 flow [2024-06-28 01:25:27,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:25:27,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:25:27,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 198 transitions. [2024-06-28 01:25:27,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:25:27,992 INFO L175 Difference]: Start difference. First operand has 515 places, 391 transitions, 4459 flow. Second operand 12 states and 198 transitions. [2024-06-28 01:25:27,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 418 transitions, 5423 flow [2024-06-28 01:25:31,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 418 transitions, 5316 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:25:31,642 INFO L231 Difference]: Finished difference. Result has 518 places, 391 transitions, 4485 flow [2024-06-28 01:25:31,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4352, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4485, PETRI_PLACES=518, PETRI_TRANSITIONS=391} [2024-06-28 01:25:31,643 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 477 predicate places. [2024-06-28 01:25:31,643 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 391 transitions, 4485 flow [2024-06-28 01:25:31,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:31,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:31,643 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 01:25:31,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-28 01:25:31,645 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:31,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:31,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1184765449, now seen corresponding path program 19 times [2024-06-28 01:25:31,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:31,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765994718] [2024-06-28 01:25:31,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:31,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:33,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:33,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765994718] [2024-06-28 01:25:33,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765994718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:33,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:33,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:25:33,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027701280] [2024-06-28 01:25:33,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:33,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:25:33,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:33,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:25:33,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:25:33,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:25:33,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 391 transitions, 4485 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:33,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:33,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:25:33,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:35,897 INFO L124 PetriNetUnfolderBase]: 4156/9850 cut-off events. [2024-06-28 01:25:35,897 INFO L125 PetriNetUnfolderBase]: For 507691/507691 co-relation queries the response was YES. [2024-06-28 01:25:36,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46488 conditions, 9850 events. 4156/9850 cut-off events. For 507691/507691 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 99288 event pairs, 1960 based on Foata normal form. 6/9230 useless extension candidates. Maximal degree in co-relation 46250. Up to 7232 conditions per place. [2024-06-28 01:25:36,111 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 394 selfloop transitions, 32 changer transitions 0/435 dead transitions. [2024-06-28 01:25:36,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 435 transitions, 5939 flow [2024-06-28 01:25:36,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:25:36,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:25:36,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 220 transitions. [2024-06-28 01:25:36,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573804573804574 [2024-06-28 01:25:36,112 INFO L175 Difference]: Start difference. First operand has 518 places, 391 transitions, 4485 flow. Second operand 13 states and 220 transitions. [2024-06-28 01:25:36,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 435 transitions, 5939 flow [2024-06-28 01:25:41,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 435 transitions, 5814 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:25:41,555 INFO L231 Difference]: Finished difference. Result has 521 places, 391 transitions, 4427 flow [2024-06-28 01:25:41,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4360, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4427, PETRI_PLACES=521, PETRI_TRANSITIONS=391} [2024-06-28 01:25:41,555 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 480 predicate places. [2024-06-28 01:25:41,555 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 391 transitions, 4427 flow [2024-06-28 01:25:41,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:41,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:41,556 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 01:25:41,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-28 01:25:41,556 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:41,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:41,557 INFO L85 PathProgramCache]: Analyzing trace with hash 421025263, now seen corresponding path program 20 times [2024-06-28 01:25:41,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:41,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247880224] [2024-06-28 01:25:41,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:41,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:43,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:43,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:43,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247880224] [2024-06-28 01:25:43,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247880224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:43,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:43,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:25:43,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178145283] [2024-06-28 01:25:43,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:43,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:25:43,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:43,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:25:43,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:25:43,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:25:43,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 391 transitions, 4427 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:43,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:43,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:25:43,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:46,510 INFO L124 PetriNetUnfolderBase]: 4274/9959 cut-off events. [2024-06-28 01:25:46,510 INFO L125 PetriNetUnfolderBase]: For 647119/647119 co-relation queries the response was YES. [2024-06-28 01:25:46,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49016 conditions, 9959 events. 4274/9959 cut-off events. For 647119/647119 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 100171 event pairs, 2072 based on Foata normal form. 6/9334 useless extension candidates. Maximal degree in co-relation 48777. Up to 7700 conditions per place. [2024-06-28 01:25:46,675 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 387 selfloop transitions, 32 changer transitions 0/428 dead transitions. [2024-06-28 01:25:46,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 428 transitions, 5845 flow [2024-06-28 01:25:46,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:25:46,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:25:46,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 214 transitions. [2024-06-28 01:25:46,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44490644490644493 [2024-06-28 01:25:46,676 INFO L175 Difference]: Start difference. First operand has 521 places, 391 transitions, 4427 flow. Second operand 13 states and 214 transitions. [2024-06-28 01:25:46,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 428 transitions, 5845 flow [2024-06-28 01:25:52,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 428 transitions, 5782 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 01:25:52,754 INFO L231 Difference]: Finished difference. Result has 524 places, 392 transitions, 4441 flow [2024-06-28 01:25:52,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4364, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4441, PETRI_PLACES=524, PETRI_TRANSITIONS=392} [2024-06-28 01:25:52,755 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 483 predicate places. [2024-06-28 01:25:52,755 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 392 transitions, 4441 flow [2024-06-28 01:25:52,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:52,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:52,755 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 01:25:52,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-28 01:25:52,755 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:52,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:52,756 INFO L85 PathProgramCache]: Analyzing trace with hash -141104115, now seen corresponding path program 21 times [2024-06-28 01:25:52,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:52,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699163921] [2024-06-28 01:25:52,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:52,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:54,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:54,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:54,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699163921] [2024-06-28 01:25:54,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699163921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:54,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:54,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:25:54,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461184544] [2024-06-28 01:25:54,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:54,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:25:54,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:54,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:25:54,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:25:54,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:25:54,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 392 transitions, 4441 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:54,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:54,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:25:54,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:58,033 INFO L124 PetriNetUnfolderBase]: 4264/9943 cut-off events. [2024-06-28 01:25:58,033 INFO L125 PetriNetUnfolderBase]: For 557128/557131 co-relation queries the response was YES. [2024-06-28 01:25:58,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47497 conditions, 9943 events. 4264/9943 cut-off events. For 557128/557131 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 99952 event pairs, 2083 based on Foata normal form. 8/9317 useless extension candidates. Maximal degree in co-relation 47256. Up to 7452 conditions per place. [2024-06-28 01:25:58,429 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 291 selfloop transitions, 119 changer transitions 0/419 dead transitions. [2024-06-28 01:25:58,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 419 transitions, 5407 flow [2024-06-28 01:25:58,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:25:58,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:25:58,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 202 transitions. [2024-06-28 01:25:58,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45495495495495497 [2024-06-28 01:25:58,430 INFO L175 Difference]: Start difference. First operand has 524 places, 392 transitions, 4441 flow. Second operand 12 states and 202 transitions. [2024-06-28 01:25:58,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 419 transitions, 5407 flow [2024-06-28 01:26:03,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 419 transitions, 5348 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:26:03,758 INFO L231 Difference]: Finished difference. Result has 526 places, 392 transitions, 4626 flow [2024-06-28 01:26:03,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4382, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4626, PETRI_PLACES=526, PETRI_TRANSITIONS=392} [2024-06-28 01:26:03,759 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 485 predicate places. [2024-06-28 01:26:03,759 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 392 transitions, 4626 flow [2024-06-28 01:26:03,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:03,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:03,759 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 01:26:03,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-28 01:26:03,760 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:03,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:03,760 INFO L85 PathProgramCache]: Analyzing trace with hash -248493061, now seen corresponding path program 22 times [2024-06-28 01:26:03,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:03,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302342644] [2024-06-28 01:26:03,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:03,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:05,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:05,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:05,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302342644] [2024-06-28 01:26:05,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302342644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:05,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:05,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:26:05,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302877199] [2024-06-28 01:26:05,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:05,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:26:05,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:05,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:26:05,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:26:05,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:26:05,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 392 transitions, 4626 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:05,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:05,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:26:05,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:09,415 INFO L124 PetriNetUnfolderBase]: 4318/10097 cut-off events. [2024-06-28 01:26:09,416 INFO L125 PetriNetUnfolderBase]: For 563121/563124 co-relation queries the response was YES. [2024-06-28 01:26:09,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48462 conditions, 10097 events. 4318/10097 cut-off events. For 563121/563124 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 102128 event pairs, 2115 based on Foata normal form. 8/9460 useless extension candidates. Maximal degree in co-relation 48220. Up to 7733 conditions per place. [2024-06-28 01:26:09,601 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 321 selfloop transitions, 89 changer transitions 0/419 dead transitions. [2024-06-28 01:26:09,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 419 transitions, 5592 flow [2024-06-28 01:26:09,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:26:09,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:26:09,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 205 transitions. [2024-06-28 01:26:09,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617117117117117 [2024-06-28 01:26:09,602 INFO L175 Difference]: Start difference. First operand has 526 places, 392 transitions, 4626 flow. Second operand 12 states and 205 transitions. [2024-06-28 01:26:09,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 419 transitions, 5592 flow [2024-06-28 01:26:15,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 419 transitions, 5350 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-28 01:26:15,706 INFO L231 Difference]: Finished difference. Result has 526 places, 392 transitions, 4566 flow [2024-06-28 01:26:15,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4384, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4566, PETRI_PLACES=526, PETRI_TRANSITIONS=392} [2024-06-28 01:26:15,707 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 485 predicate places. [2024-06-28 01:26:15,707 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 392 transitions, 4566 flow [2024-06-28 01:26:15,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:15,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:15,708 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 01:26:15,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-28 01:26:15,708 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:15,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:15,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1980459887, now seen corresponding path program 23 times [2024-06-28 01:26:15,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:15,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619705155] [2024-06-28 01:26:15,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:15,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:17,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:17,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:17,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619705155] [2024-06-28 01:26:17,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619705155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:17,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:17,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:26:17,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557741878] [2024-06-28 01:26:17,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:17,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:26:17,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:17,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:26:17,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:26:17,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:26:17,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 392 transitions, 4566 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:17,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:17,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:26:17,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:20,960 INFO L124 PetriNetUnfolderBase]: 4456/10439 cut-off events. [2024-06-28 01:26:20,960 INFO L125 PetriNetUnfolderBase]: For 664347/664350 co-relation queries the response was YES. [2024-06-28 01:26:21,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51277 conditions, 10439 events. 4456/10439 cut-off events. For 664347/664350 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 106453 event pairs, 2195 based on Foata normal form. 6/9792 useless extension candidates. Maximal degree in co-relation 51035. Up to 7589 conditions per place. [2024-06-28 01:26:21,146 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 345 selfloop transitions, 72 changer transitions 0/426 dead transitions. [2024-06-28 01:26:21,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 426 transitions, 5972 flow [2024-06-28 01:26:21,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:26:21,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:26:21,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 204 transitions. [2024-06-28 01:26:21,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:26:21,148 INFO L175 Difference]: Start difference. First operand has 526 places, 392 transitions, 4566 flow. Second operand 12 states and 204 transitions. [2024-06-28 01:26:21,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 426 transitions, 5972 flow [2024-06-28 01:26:26,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 426 transitions, 5796 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:26:26,607 INFO L231 Difference]: Finished difference. Result has 528 places, 392 transitions, 4537 flow [2024-06-28 01:26:26,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4390, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4537, PETRI_PLACES=528, PETRI_TRANSITIONS=392} [2024-06-28 01:26:26,607 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 487 predicate places. [2024-06-28 01:26:26,607 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 392 transitions, 4537 flow [2024-06-28 01:26:26,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:26,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:26,608 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 01:26:26,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-28 01:26:26,608 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:26,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:26,608 INFO L85 PathProgramCache]: Analyzing trace with hash 265245659, now seen corresponding path program 24 times [2024-06-28 01:26:26,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:26,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92517136] [2024-06-28 01:26:26,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:26,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:26,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:28,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:28,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:28,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92517136] [2024-06-28 01:26:28,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92517136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:28,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:28,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:26:28,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264178691] [2024-06-28 01:26:28,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:28,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:26:28,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:28,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:26:28,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:26:28,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:26:28,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 392 transitions, 4537 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:28,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:28,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:26:28,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:31,826 INFO L124 PetriNetUnfolderBase]: 4446/10386 cut-off events. [2024-06-28 01:26:31,826 INFO L125 PetriNetUnfolderBase]: For 576618/576618 co-relation queries the response was YES. [2024-06-28 01:26:31,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49654 conditions, 10386 events. 4446/10386 cut-off events. For 576618/576618 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 105676 event pairs, 2231 based on Foata normal form. 8/9745 useless extension candidates. Maximal degree in co-relation 49411. Up to 8192 conditions per place. [2024-06-28 01:26:32,012 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 382 selfloop transitions, 32 changer transitions 0/423 dead transitions. [2024-06-28 01:26:32,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 423 transitions, 5527 flow [2024-06-28 01:26:32,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 01:26:32,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 01:26:32,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 220 transitions. [2024-06-28 01:26:32,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4247104247104247 [2024-06-28 01:26:32,014 INFO L175 Difference]: Start difference. First operand has 528 places, 392 transitions, 4537 flow. Second operand 14 states and 220 transitions. [2024-06-28 01:26:32,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 423 transitions, 5527 flow [2024-06-28 01:26:38,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 423 transitions, 5401 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 01:26:38,093 INFO L231 Difference]: Finished difference. Result has 533 places, 392 transitions, 4479 flow [2024-06-28 01:26:38,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4411, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4479, PETRI_PLACES=533, PETRI_TRANSITIONS=392} [2024-06-28 01:26:38,094 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 492 predicate places. [2024-06-28 01:26:38,094 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 392 transitions, 4479 flow [2024-06-28 01:26:38,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:38,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:38,094 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 01:26:38,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-28 01:26:38,094 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:38,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:38,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1470445291, now seen corresponding path program 25 times [2024-06-28 01:26:38,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:38,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888476679] [2024-06-28 01:26:38,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:38,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:39,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:39,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:39,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888476679] [2024-06-28 01:26:39,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888476679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:39,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:39,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:26:39,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016395535] [2024-06-28 01:26:39,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:39,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:26:39,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:39,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:26:39,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:26:39,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:26:39,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 392 transitions, 4479 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:39,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:39,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:26:39,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:43,214 INFO L124 PetriNetUnfolderBase]: 4436/10382 cut-off events. [2024-06-28 01:26:43,215 INFO L125 PetriNetUnfolderBase]: For 441182/441185 co-relation queries the response was YES. [2024-06-28 01:26:43,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48021 conditions, 10382 events. 4436/10382 cut-off events. For 441182/441185 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 105798 event pairs, 2207 based on Foata normal form. 8/9734 useless extension candidates. Maximal degree in co-relation 47778. Up to 8091 conditions per place. [2024-06-28 01:26:43,421 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 345 selfloop transitions, 65 changer transitions 0/419 dead transitions. [2024-06-28 01:26:43,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 419 transitions, 5445 flow [2024-06-28 01:26:43,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:26:43,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:26:43,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 196 transitions. [2024-06-28 01:26:43,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-28 01:26:43,422 INFO L175 Difference]: Start difference. First operand has 533 places, 392 transitions, 4479 flow. Second operand 12 states and 196 transitions. [2024-06-28 01:26:43,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 419 transitions, 5445 flow [2024-06-28 01:26:48,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 419 transitions, 5383 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-28 01:26:48,211 INFO L231 Difference]: Finished difference. Result has 533 places, 392 transitions, 4551 flow [2024-06-28 01:26:48,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4417, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4551, PETRI_PLACES=533, PETRI_TRANSITIONS=392} [2024-06-28 01:26:48,212 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 492 predicate places. [2024-06-28 01:26:48,212 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 392 transitions, 4551 flow [2024-06-28 01:26:48,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:48,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:48,212 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 01:26:48,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-28 01:26:48,212 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:48,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:48,213 INFO L85 PathProgramCache]: Analyzing trace with hash -248233591, now seen corresponding path program 26 times [2024-06-28 01:26:48,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:48,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165366501] [2024-06-28 01:26:48,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:48,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:49,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:49,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:49,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165366501] [2024-06-28 01:26:49,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165366501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:49,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:49,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:26:49,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526560054] [2024-06-28 01:26:49,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:49,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:26:49,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:49,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:26:49,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:26:49,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:26:49,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 392 transitions, 4551 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:49,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:49,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:26:49,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand