./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix035.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix035.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix035.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix035.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:28:34,535 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:28:34,636 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:28:34,642 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:28:34,642 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:28:34,672 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:28:34,674 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:28:34,674 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:28:34,675 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:28:34,678 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:28:34,679 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:28:34,679 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:28:34,680 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:28:34,681 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:28:34,681 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:28:34,681 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:28:34,682 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:28:34,682 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:28:34,682 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:28:34,682 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:28:34,683 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:28:34,683 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:28:34,683 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:28:34,684 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:28:34,684 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:28:34,684 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:28:34,684 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:28:34,685 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:28:34,685 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:28:34,686 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:28:34,686 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:28:34,687 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:28:34,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:28:34,687 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:28:34,687 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:28:34,688 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:28:34,688 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:28:34,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:28:34,688 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:28:34,688 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:28:34,689 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:28:34,689 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:28:34,689 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:28:34,689 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:28:34,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:28:34,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:28:34,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:28:34,970 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:28:34,972 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:28:34,973 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix035.oepc.i [2024-06-27 18:28:36,125 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:28:36,380 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:28:36,380 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix035.oepc.i [2024-06-27 18:28:36,401 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c43bdb1e8/127fa8bdbed04a3aa988419056898dd9/FLAGbd2d5378a [2024-06-27 18:28:36,413 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c43bdb1e8/127fa8bdbed04a3aa988419056898dd9 [2024-06-27 18:28:36,415 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:28:36,416 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:28:36,418 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix035.oepc.yml/witness.yml [2024-06-27 18:28:36,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:28:36,639 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:28:36,640 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:28:36,640 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:28:36,645 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:28:36,646 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:28:36" (1/2) ... [2024-06-27 18:28:36,647 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f5ec4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:36, skipping insertion in model container [2024-06-27 18:28:36,647 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:28:36" (1/2) ... [2024-06-27 18:28:36,649 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3c3651d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:36, skipping insertion in model container [2024-06-27 18:28:36,650 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:28:36" (2/2) ... [2024-06-27 18:28:36,650 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f5ec4d5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:36, skipping insertion in model container [2024-06-27 18:28:36,650 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:28:36" (2/2) ... [2024-06-27 18:28:36,650 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:28:36,761 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:28:36,763 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ((((((((((((((((((((! multithreaded || a$r_buff0_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 18:28:36,763 INFO L97 edCorrectnessWitness]: Location invariant before [L848-L848] ((((((((((((((((((((! multithreaded || a$r_buff0_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 18:28:36,763 INFO L97 edCorrectnessWitness]: Location invariant before [L850-L850] ((((((((((((((((((((! multithreaded || a$r_buff0_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 18:28:36,763 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:28:36,763 INFO L106 edCorrectnessWitness]: ghost_update [L846-L846] multithreaded = 1; [2024-06-27 18:28:36,811 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:28:37,009 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/mix035.oepc.i[945,958] [2024-06-27 18:28:37,159 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:28:37,169 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:28:37,206 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/mix035.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:28:37,313 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:28:37,365 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:28:37,366 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:37 WrapperNode [2024-06-27 18:28:37,366 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:28:37,367 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:28:37,368 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:28:37,368 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:28:37,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:37" (1/1) ... [2024-06-27 18:28:37,410 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:37" (1/1) ... [2024-06-27 18:28:37,451 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 124 [2024-06-27 18:28:37,452 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:28:37,453 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:28:37,453 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:28:37,453 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:28:37,463 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:37" (1/1) ... [2024-06-27 18:28:37,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:37" (1/1) ... [2024-06-27 18:28:37,471 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:37" (1/1) ... [2024-06-27 18:28:37,491 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 18:28:37,499 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:37" (1/1) ... [2024-06-27 18:28:37,499 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:37" (1/1) ... [2024-06-27 18:28:37,511 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:37" (1/1) ... [2024-06-27 18:28:37,527 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:37" (1/1) ... [2024-06-27 18:28:37,529 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:37" (1/1) ... [2024-06-27 18:28:37,530 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:37" (1/1) ... [2024-06-27 18:28:37,540 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:28:37,541 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:28:37,541 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:28:37,541 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:28:37,542 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:37" (1/1) ... [2024-06-27 18:28:37,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:28:37,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:28:37,578 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 18:28:37,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 18:28:37,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:28:37,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:28:37,622 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:28:37,622 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:28:37,623 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:28:37,623 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:28:37,623 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:28:37,623 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:28:37,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:28:37,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:28:37,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:28:37,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:28:37,626 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:28:37,785 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:28:37,789 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:28:38,210 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:28:38,210 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:28:38,480 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:28:38,480 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:28:38,485 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:28:38 BoogieIcfgContainer [2024-06-27 18:28:38,486 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:28:38,490 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:28:38,490 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:28:38,493 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:28:38,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:28:36" (1/4) ... [2024-06-27 18:28:38,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b21a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:28:38, skipping insertion in model container [2024-06-27 18:28:38,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:28:36" (2/4) ... [2024-06-27 18:28:38,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b21a5e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:28:38, skipping insertion in model container [2024-06-27 18:28:38,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:37" (3/4) ... [2024-06-27 18:28:38,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b21a5e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:28:38, skipping insertion in model container [2024-06-27 18:28:38,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:28:38" (4/4) ... [2024-06-27 18:28:38,498 INFO L112 eAbstractionObserver]: Analyzing ICFG mix035.oepc.i [2024-06-27 18:28:38,516 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:28:38,516 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:28:38,517 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:28:38,569 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:28:38,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 18:28:38,648 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-27 18:28:38,648 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:28:38,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-27 18:28:38,652 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 18:28:38,657 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-27 18:28:38,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:28:38,682 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;@1c371e33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:28:38,682 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:28:38,689 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:28:38,690 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:28:38,690 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:28:38,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:38,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:28:38,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:38,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:38,699 INFO L85 PathProgramCache]: Analyzing trace with hash 363555772, now seen corresponding path program 1 times [2024-06-27 18:28:38,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:38,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519951498] [2024-06-27 18:28:38,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:38,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:40,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:40,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:40,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519951498] [2024-06-27 18:28:40,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519951498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:40,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:40,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:28:40,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735525951] [2024-06-27 18:28:40,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:40,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:28:40,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:40,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:28:40,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:28:40,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 18:28:40,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:40,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:40,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 18:28:40,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:41,037 INFO L124 PetriNetUnfolderBase]: 3659/5970 cut-off events. [2024-06-27 18:28:41,037 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-06-27 18:28:41,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11320 conditions, 5970 events. 3659/5970 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 38191 event pairs, 2782 based on Foata normal form. 181/5628 useless extension candidates. Maximal degree in co-relation 11308. Up to 5259 conditions per place. [2024-06-27 18:28:41,081 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 41 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-27 18:28:41,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 225 flow [2024-06-27 18:28:41,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:28:41,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:28:41,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-06-27 18:28:41,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-06-27 18:28:41,097 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 99 transitions. [2024-06-27 18:28:41,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 225 flow [2024-06-27 18:28:41,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 220 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:28:41,108 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 131 flow [2024-06-27 18:28:41,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-27 18:28:41,114 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-27 18:28:41,115 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 131 flow [2024-06-27 18:28:41,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:41,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:41,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:28:41,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:28:41,116 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:41,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:41,117 INFO L85 PathProgramCache]: Analyzing trace with hash 363556668, now seen corresponding path program 1 times [2024-06-27 18:28:41,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:41,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107413598] [2024-06-27 18:28:41,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:41,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:41,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:41,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:41,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107413598] [2024-06-27 18:28:41,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107413598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:41,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:41,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:28:41,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589086197] [2024-06-27 18:28:41,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:41,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:28:41,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:41,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:28:41,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:28:41,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 48 [2024-06-27 18:28:41,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:41,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:41,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 48 [2024-06-27 18:28:41,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:41,535 INFO L124 PetriNetUnfolderBase]: 932/1798 cut-off events. [2024-06-27 18:28:41,536 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-06-27 18:28:41,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3482 conditions, 1798 events. 932/1798 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11969 event pairs, 418 based on Foata normal form. 0/1685 useless extension candidates. Maximal degree in co-relation 3470. Up to 1189 conditions per place. [2024-06-27 18:28:41,549 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 35 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-06-27 18:28:41,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 62 transitions, 234 flow [2024-06-27 18:28:41,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:28:41,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:28:41,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-06-27 18:28:41,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7847222222222222 [2024-06-27 18:28:41,554 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 131 flow. Second operand 3 states and 113 transitions. [2024-06-27 18:28:41,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 62 transitions, 234 flow [2024-06-27 18:28:41,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 62 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:28:41,557 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 124 flow [2024-06-27 18:28:41,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-27 18:28:41,558 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-27 18:28:41,559 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 124 flow [2024-06-27 18:28:41,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:41,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:41,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:41,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:28:41,562 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:41,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:41,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1484783226, now seen corresponding path program 1 times [2024-06-27 18:28:41,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:41,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779882122] [2024-06-27 18:28:41,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:41,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:42,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:42,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:42,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779882122] [2024-06-27 18:28:42,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779882122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:42,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:42,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:28:42,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474681742] [2024-06-27 18:28:42,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:42,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:28:42,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:42,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:28:42,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:28:42,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 18:28:42,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:42,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:42,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 18:28:42,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:43,140 INFO L124 PetriNetUnfolderBase]: 3008/4943 cut-off events. [2024-06-27 18:28:43,140 INFO L125 PetriNetUnfolderBase]: For 1232/1232 co-relation queries the response was YES. [2024-06-27 18:28:43,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10533 conditions, 4943 events. 3008/4943 cut-off events. For 1232/1232 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 30688 event pairs, 1824 based on Foata normal form. 3/4734 useless extension candidates. Maximal degree in co-relation 10520. Up to 4322 conditions per place. [2024-06-27 18:28:43,178 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 49 selfloop transitions, 8 changer transitions 2/72 dead transitions. [2024-06-27 18:28:43,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 314 flow [2024-06-27 18:28:43,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:28:43,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:28:43,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-27 18:28:43,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.640625 [2024-06-27 18:28:43,181 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 124 flow. Second operand 4 states and 123 transitions. [2024-06-27 18:28:43,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 314 flow [2024-06-27 18:28:43,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 306 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:28:43,183 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 185 flow [2024-06-27 18:28:43,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-27 18:28:43,184 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-27 18:28:43,184 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 185 flow [2024-06-27 18:28:43,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:43,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:43,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:43,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:28:43,185 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:43,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:43,186 INFO L85 PathProgramCache]: Analyzing trace with hash 947578169, now seen corresponding path program 1 times [2024-06-27 18:28:43,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:43,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906529470] [2024-06-27 18:28:43,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:43,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:44,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:44,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:44,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906529470] [2024-06-27 18:28:44,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906529470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:44,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:44,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:28:44,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540598443] [2024-06-27 18:28:44,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:44,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:28:44,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:44,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:28:44,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:28:44,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 18:28:44,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 185 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:44,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:44,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 18:28:44,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:45,633 INFO L124 PetriNetUnfolderBase]: 3131/4798 cut-off events. [2024-06-27 18:28:45,633 INFO L125 PetriNetUnfolderBase]: For 2201/2201 co-relation queries the response was YES. [2024-06-27 18:28:45,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11521 conditions, 4798 events. 3131/4798 cut-off events. For 2201/2201 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 27628 event pairs, 1223 based on Foata normal form. 3/4720 useless extension candidates. Maximal degree in co-relation 11506. Up to 4448 conditions per place. [2024-06-27 18:28:45,665 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 69 selfloop transitions, 21 changer transitions 0/102 dead transitions. [2024-06-27 18:28:45,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 102 transitions, 523 flow [2024-06-27 18:28:45,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:28:45,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:28:45,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-06-27 18:28:45,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6076388888888888 [2024-06-27 18:28:45,668 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 185 flow. Second operand 6 states and 175 transitions. [2024-06-27 18:28:45,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 102 transitions, 523 flow [2024-06-27 18:28:45,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 102 transitions, 506 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 18:28:45,672 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 303 flow [2024-06-27 18:28:45,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2024-06-27 18:28:45,673 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2024-06-27 18:28:45,673 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 303 flow [2024-06-27 18:28:45,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:45,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:45,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:45,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:28:45,674 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:45,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:45,675 INFO L85 PathProgramCache]: Analyzing trace with hash -689846514, now seen corresponding path program 1 times [2024-06-27 18:28:45,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:45,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788209876] [2024-06-27 18:28:45,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:45,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:47,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:47,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:47,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788209876] [2024-06-27 18:28:47,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788209876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:47,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:47,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:28:47,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218090222] [2024-06-27 18:28:47,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:47,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:28:47,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:47,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:28:47,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:28:47,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 18:28:47,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 303 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-27 18:28:47,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:47,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 18:28:47,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:48,581 INFO L124 PetriNetUnfolderBase]: 3122/4781 cut-off events. [2024-06-27 18:28:48,581 INFO L125 PetriNetUnfolderBase]: For 4621/4621 co-relation queries the response was YES. [2024-06-27 18:28:48,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12862 conditions, 4781 events. 3122/4781 cut-off events. For 4621/4621 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 27517 event pairs, 922 based on Foata normal form. 6/4706 useless extension candidates. Maximal degree in co-relation 12843. Up to 4391 conditions per place. [2024-06-27 18:28:48,618 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 76 selfloop transitions, 23 changer transitions 0/111 dead transitions. [2024-06-27 18:28:48,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 111 transitions, 629 flow [2024-06-27 18:28:48,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:28:48,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:28:48,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-06-27 18:28:48,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5922619047619048 [2024-06-27 18:28:48,622 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 303 flow. Second operand 7 states and 199 transitions. [2024-06-27 18:28:48,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 111 transitions, 629 flow [2024-06-27 18:28:48,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 111 transitions, 606 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-27 18:28:48,634 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 345 flow [2024-06-27 18:28:48,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=345, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-06-27 18:28:48,637 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-06-27 18:28:48,642 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 345 flow [2024-06-27 18:28:48,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-27 18:28:48,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:48,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:48,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:28:48,643 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:48,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:48,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1415999150, now seen corresponding path program 1 times [2024-06-27 18:28:48,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:48,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436733388] [2024-06-27 18:28:48,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:48,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:49,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:49,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:49,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436733388] [2024-06-27 18:28:49,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436733388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:49,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:49,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:28:49,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279033501] [2024-06-27 18:28:49,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:49,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:28:49,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:49,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:28:49,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:28:49,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:28:49,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 345 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:49,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:49,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:28:49,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:50,276 INFO L124 PetriNetUnfolderBase]: 3635/6021 cut-off events. [2024-06-27 18:28:50,276 INFO L125 PetriNetUnfolderBase]: For 7593/7593 co-relation queries the response was YES. [2024-06-27 18:28:50,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15985 conditions, 6021 events. 3635/6021 cut-off events. For 7593/7593 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 38484 event pairs, 1536 based on Foata normal form. 4/5865 useless extension candidates. Maximal degree in co-relation 15963. Up to 5186 conditions per place. [2024-06-27 18:28:50,369 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 65 selfloop transitions, 11 changer transitions 0/86 dead transitions. [2024-06-27 18:28:50,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 86 transitions, 559 flow [2024-06-27 18:28:50,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:28:50,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:28:50,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-27 18:28:50,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-06-27 18:28:50,372 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 345 flow. Second operand 5 states and 124 transitions. [2024-06-27 18:28:50,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 86 transitions, 559 flow [2024-06-27 18:28:50,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 86 transitions, 504 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:50,381 INFO L231 Difference]: Finished difference. Result has 68 places, 67 transitions, 343 flow [2024-06-27 18:28:50,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=343, PETRI_PLACES=68, PETRI_TRANSITIONS=67} [2024-06-27 18:28:50,384 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-06-27 18:28:50,384 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 67 transitions, 343 flow [2024-06-27 18:28:50,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:50,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:50,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:50,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:28:50,385 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:50,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:50,386 INFO L85 PathProgramCache]: Analyzing trace with hash 722838032, now seen corresponding path program 1 times [2024-06-27 18:28:50,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:50,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450088994] [2024-06-27 18:28:50,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:50,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:51,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:51,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:51,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450088994] [2024-06-27 18:28:51,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450088994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:51,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:51,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:28:51,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864286846] [2024-06-27 18:28:51,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:51,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:28:51,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:51,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:28:51,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:28:51,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:28:51,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 343 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:51,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:51,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:28:51,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:52,301 INFO L124 PetriNetUnfolderBase]: 3714/6113 cut-off events. [2024-06-27 18:28:52,301 INFO L125 PetriNetUnfolderBase]: For 9791/9791 co-relation queries the response was YES. [2024-06-27 18:28:52,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17158 conditions, 6113 events. 3714/6113 cut-off events. For 9791/9791 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 38421 event pairs, 1282 based on Foata normal form. 4/5928 useless extension candidates. Maximal degree in co-relation 17134. Up to 5226 conditions per place. [2024-06-27 18:28:52,342 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 82 selfloop transitions, 18 changer transitions 0/110 dead transitions. [2024-06-27 18:28:52,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 110 transitions, 713 flow [2024-06-27 18:28:52,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:28:52,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:28:52,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-27 18:28:52,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5381944444444444 [2024-06-27 18:28:52,345 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 343 flow. Second operand 6 states and 155 transitions. [2024-06-27 18:28:52,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 110 transitions, 713 flow [2024-06-27 18:28:52,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 110 transitions, 674 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 18:28:52,352 INFO L231 Difference]: Finished difference. Result has 73 places, 78 transitions, 452 flow [2024-06-27 18:28:52,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=452, PETRI_PLACES=73, PETRI_TRANSITIONS=78} [2024-06-27 18:28:52,354 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2024-06-27 18:28:52,354 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 78 transitions, 452 flow [2024-06-27 18:28:52,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:52,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:52,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:52,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:28:52,355 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:52,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:52,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1102332902, now seen corresponding path program 2 times [2024-06-27 18:28:52,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:52,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574987802] [2024-06-27 18:28:52,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:52,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:53,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:53,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:53,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574987802] [2024-06-27 18:28:53,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574987802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:53,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:53,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:28:53,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332424703] [2024-06-27 18:28:53,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:53,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:28:53,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:53,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:28:53,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:28:53,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:28:53,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 78 transitions, 452 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:53,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:53,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:28:53,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:54,146 INFO L124 PetriNetUnfolderBase]: 3704/6127 cut-off events. [2024-06-27 18:28:54,146 INFO L125 PetriNetUnfolderBase]: For 13482/13482 co-relation queries the response was YES. [2024-06-27 18:28:54,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18753 conditions, 6127 events. 3704/6127 cut-off events. For 13482/13482 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 39133 event pairs, 1497 based on Foata normal form. 4/5966 useless extension candidates. Maximal degree in co-relation 18726. Up to 5273 conditions per place. [2024-06-27 18:28:54,195 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 79 selfloop transitions, 13 changer transitions 0/102 dead transitions. [2024-06-27 18:28:54,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 102 transitions, 698 flow [2024-06-27 18:28:54,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:28:54,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:28:54,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-27 18:28:54,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-27 18:28:54,197 INFO L175 Difference]: Start difference. First operand has 73 places, 78 transitions, 452 flow. Second operand 6 states and 146 transitions. [2024-06-27 18:28:54,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 102 transitions, 698 flow [2024-06-27 18:28:54,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 102 transitions, 674 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-27 18:28:54,209 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 462 flow [2024-06-27 18:28:54,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=462, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2024-06-27 18:28:54,210 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 24 predicate places. [2024-06-27 18:28:54,210 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 462 flow [2024-06-27 18:28:54,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:54,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:54,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:54,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:28:54,211 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:54,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:54,212 INFO L85 PathProgramCache]: Analyzing trace with hash 933023409, now seen corresponding path program 1 times [2024-06-27 18:28:54,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:54,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979226149] [2024-06-27 18:28:54,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:54,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:55,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:55,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:55,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979226149] [2024-06-27 18:28:55,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979226149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:55,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:55,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:28:55,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317927579] [2024-06-27 18:28:55,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:55,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:28:55,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:55,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:28:55,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:28:55,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:28:55,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 462 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:55,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:55,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:28:55,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:56,379 INFO L124 PetriNetUnfolderBase]: 3750/6156 cut-off events. [2024-06-27 18:28:56,379 INFO L125 PetriNetUnfolderBase]: For 14969/14969 co-relation queries the response was YES. [2024-06-27 18:28:56,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19201 conditions, 6156 events. 3750/6156 cut-off events. For 14969/14969 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 38597 event pairs, 1301 based on Foata normal form. 4/5964 useless extension candidates. Maximal degree in co-relation 19171. Up to 5304 conditions per place. [2024-06-27 18:28:56,425 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 96 selfloop transitions, 15 changer transitions 0/121 dead transitions. [2024-06-27 18:28:56,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 121 transitions, 818 flow [2024-06-27 18:28:56,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:28:56,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:28:56,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-27 18:28:56,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-06-27 18:28:56,428 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 462 flow. Second operand 7 states and 177 transitions. [2024-06-27 18:28:56,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 121 transitions, 818 flow [2024-06-27 18:28:56,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 121 transitions, 785 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:28:56,443 INFO L231 Difference]: Finished difference. Result has 81 places, 81 transitions, 499 flow [2024-06-27 18:28:56,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=499, PETRI_PLACES=81, PETRI_TRANSITIONS=81} [2024-06-27 18:28:56,444 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 27 predicate places. [2024-06-27 18:28:56,444 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 81 transitions, 499 flow [2024-06-27 18:28:56,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:56,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:56,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:56,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:28:56,445 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:56,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:56,446 INFO L85 PathProgramCache]: Analyzing trace with hash 933143379, now seen corresponding path program 2 times [2024-06-27 18:28:56,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:56,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587800804] [2024-06-27 18:28:56,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:56,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:57,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:57,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:57,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587800804] [2024-06-27 18:28:57,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587800804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:57,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:57,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:28:57,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681898555] [2024-06-27 18:28:57,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:57,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:28:57,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:57,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:28:57,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:28:57,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:28:57,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 81 transitions, 499 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:57,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:57,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:28:57,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:58,227 INFO L124 PetriNetUnfolderBase]: 3829/6267 cut-off events. [2024-06-27 18:28:58,228 INFO L125 PetriNetUnfolderBase]: For 19198/19198 co-relation queries the response was YES. [2024-06-27 18:28:58,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20738 conditions, 6267 events. 3829/6267 cut-off events. For 19198/19198 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 39282 event pairs, 1233 based on Foata normal form. 4/6074 useless extension candidates. Maximal degree in co-relation 20708. Up to 5243 conditions per place. [2024-06-27 18:28:58,266 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 90 selfloop transitions, 28 changer transitions 0/128 dead transitions. [2024-06-27 18:28:58,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 128 transitions, 943 flow [2024-06-27 18:28:58,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:28:58,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:28:58,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-27 18:28:58,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 18:28:58,269 INFO L175 Difference]: Start difference. First operand has 81 places, 81 transitions, 499 flow. Second operand 7 states and 182 transitions. [2024-06-27 18:28:58,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 128 transitions, 943 flow [2024-06-27 18:28:58,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 128 transitions, 891 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:58,289 INFO L231 Difference]: Finished difference. Result has 83 places, 87 transitions, 581 flow [2024-06-27 18:28:58,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=581, PETRI_PLACES=83, PETRI_TRANSITIONS=87} [2024-06-27 18:28:58,291 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 29 predicate places. [2024-06-27 18:28:58,291 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 87 transitions, 581 flow [2024-06-27 18:28:58,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:58,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:58,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:58,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:28:58,292 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:58,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:58,292 INFO L85 PathProgramCache]: Analyzing trace with hash 575975431, now seen corresponding path program 3 times [2024-06-27 18:28:58,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:58,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679685146] [2024-06-27 18:28:58,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:58,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:59,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:59,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:59,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679685146] [2024-06-27 18:28:59,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679685146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:59,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:59,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:28:59,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975689376] [2024-06-27 18:28:59,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:59,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:28:59,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:59,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:28:59,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:28:59,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:28:59,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 87 transitions, 581 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:59,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:59,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:28:59,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:59,990 INFO L124 PetriNetUnfolderBase]: 3819/6293 cut-off events. [2024-06-27 18:28:59,990 INFO L125 PetriNetUnfolderBase]: For 24019/24019 co-relation queries the response was YES. [2024-06-27 18:29:00,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21656 conditions, 6293 events. 3819/6293 cut-off events. For 24019/24019 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 40176 event pairs, 1495 based on Foata normal form. 4/6121 useless extension candidates. Maximal degree in co-relation 21625. Up to 5390 conditions per place. [2024-06-27 18:29:00,036 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 94 selfloop transitions, 16 changer transitions 0/120 dead transitions. [2024-06-27 18:29:00,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 120 transitions, 889 flow [2024-06-27 18:29:00,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:29:00,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:29:00,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 18:29:00,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2024-06-27 18:29:00,040 INFO L175 Difference]: Start difference. First operand has 83 places, 87 transitions, 581 flow. Second operand 7 states and 171 transitions. [2024-06-27 18:29:00,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 120 transitions, 889 flow [2024-06-27 18:29:00,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 120 transitions, 831 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-27 18:29:00,072 INFO L231 Difference]: Finished difference. Result has 87 places, 87 transitions, 563 flow [2024-06-27 18:29:00,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=563, PETRI_PLACES=87, PETRI_TRANSITIONS=87} [2024-06-27 18:29:00,073 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 33 predicate places. [2024-06-27 18:29:00,073 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 87 transitions, 563 flow [2024-06-27 18:29:00,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:00,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:00,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:00,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:29:00,075 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:00,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:00,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1139150314, now seen corresponding path program 1 times [2024-06-27 18:29:00,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:00,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452619125] [2024-06-27 18:29:00,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:00,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:01,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:01,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:01,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452619125] [2024-06-27 18:29:01,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452619125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:01,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:01,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:29:01,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127144687] [2024-06-27 18:29:01,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:01,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:29:01,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:01,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:29:01,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:29:01,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:29:01,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 563 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:01,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:01,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:29:01,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:02,757 INFO L124 PetriNetUnfolderBase]: 4668/7601 cut-off events. [2024-06-27 18:29:02,757 INFO L125 PetriNetUnfolderBase]: For 29489/29489 co-relation queries the response was YES. [2024-06-27 18:29:02,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25647 conditions, 7601 events. 4668/7601 cut-off events. For 29489/29489 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 48363 event pairs, 1843 based on Foata normal form. 4/7389 useless extension candidates. Maximal degree in co-relation 25614. Up to 6579 conditions per place. [2024-06-27 18:29:02,809 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 101 selfloop transitions, 20 changer transitions 0/130 dead transitions. [2024-06-27 18:29:02,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 130 transitions, 963 flow [2024-06-27 18:29:02,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:29:02,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:29:02,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-27 18:29:02,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-06-27 18:29:02,812 INFO L175 Difference]: Start difference. First operand has 87 places, 87 transitions, 563 flow. Second operand 7 states and 166 transitions. [2024-06-27 18:29:02,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 130 transitions, 963 flow [2024-06-27 18:29:02,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 130 transitions, 904 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 18:29:02,842 INFO L231 Difference]: Finished difference. Result has 89 places, 94 transitions, 626 flow [2024-06-27 18:29:02,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=626, PETRI_PLACES=89, PETRI_TRANSITIONS=94} [2024-06-27 18:29:02,843 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 35 predicate places. [2024-06-27 18:29:02,843 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 94 transitions, 626 flow [2024-06-27 18:29:02,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:02,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:02,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:02,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:29:02,844 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:02,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:02,845 INFO L85 PathProgramCache]: Analyzing trace with hash 582806354, now seen corresponding path program 1 times [2024-06-27 18:29:02,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:02,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291993839] [2024-06-27 18:29:02,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:02,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:03,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:03,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:03,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291993839] [2024-06-27 18:29:03,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291993839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:03,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:03,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:29:03,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735386579] [2024-06-27 18:29:03,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:03,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:29:03,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:03,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:29:03,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:29:03,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:03,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 94 transitions, 626 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:03,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:03,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:03,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:04,589 INFO L124 PetriNetUnfolderBase]: 4312/7178 cut-off events. [2024-06-27 18:29:04,589 INFO L125 PetriNetUnfolderBase]: For 32708/32712 co-relation queries the response was YES. [2024-06-27 18:29:04,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24925 conditions, 7178 events. 4312/7178 cut-off events. For 32708/32712 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 46880 event pairs, 1851 based on Foata normal form. 5/6980 useless extension candidates. Maximal degree in co-relation 24890. Up to 6180 conditions per place. [2024-06-27 18:29:04,633 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 87 selfloop transitions, 11 changer transitions 0/112 dead transitions. [2024-06-27 18:29:04,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 112 transitions, 880 flow [2024-06-27 18:29:04,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:29:04,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:29:04,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-27 18:29:04,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2024-06-27 18:29:04,635 INFO L175 Difference]: Start difference. First operand has 89 places, 94 transitions, 626 flow. Second operand 5 states and 119 transitions. [2024-06-27 18:29:04,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 112 transitions, 880 flow [2024-06-27 18:29:04,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 112 transitions, 825 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 18:29:04,662 INFO L231 Difference]: Finished difference. Result has 90 places, 97 transitions, 626 flow [2024-06-27 18:29:04,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=626, PETRI_PLACES=90, PETRI_TRANSITIONS=97} [2024-06-27 18:29:04,664 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 36 predicate places. [2024-06-27 18:29:04,664 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 97 transitions, 626 flow [2024-06-27 18:29:04,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:04,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:04,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:04,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:29:04,665 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:04,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:04,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1141134705, now seen corresponding path program 1 times [2024-06-27 18:29:04,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:04,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777094244] [2024-06-27 18:29:04,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:04,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:06,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:06,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:06,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777094244] [2024-06-27 18:29:06,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777094244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:06,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:06,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:29:06,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014551100] [2024-06-27 18:29:06,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:06,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:29:06,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:06,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:29:06,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:29:06,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:06,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 97 transitions, 626 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:06,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:06,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:06,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:07,611 INFO L124 PetriNetUnfolderBase]: 4608/7107 cut-off events. [2024-06-27 18:29:07,611 INFO L125 PetriNetUnfolderBase]: For 37367/37367 co-relation queries the response was YES. [2024-06-27 18:29:07,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26913 conditions, 7107 events. 4608/7107 cut-off events. For 37367/37367 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 42370 event pairs, 1309 based on Foata normal form. 4/7050 useless extension candidates. Maximal degree in co-relation 26877. Up to 6378 conditions per place. [2024-06-27 18:29:07,659 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 124 selfloop transitions, 35 changer transitions 0/170 dead transitions. [2024-06-27 18:29:07,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 170 transitions, 1272 flow [2024-06-27 18:29:07,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:07,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:07,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-27 18:29:07,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 18:29:07,661 INFO L175 Difference]: Start difference. First operand has 90 places, 97 transitions, 626 flow. Second operand 9 states and 234 transitions. [2024-06-27 18:29:07,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 170 transitions, 1272 flow [2024-06-27 18:29:07,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 170 transitions, 1241 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 18:29:07,706 INFO L231 Difference]: Finished difference. Result has 97 places, 106 transitions, 797 flow [2024-06-27 18:29:07,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=797, PETRI_PLACES=97, PETRI_TRANSITIONS=106} [2024-06-27 18:29:07,707 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 43 predicate places. [2024-06-27 18:29:07,707 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 106 transitions, 797 flow [2024-06-27 18:29:07,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:07,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:07,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:07,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:29:07,708 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:07,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:07,708 INFO L85 PathProgramCache]: Analyzing trace with hash -189422513, now seen corresponding path program 2 times [2024-06-27 18:29:07,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:07,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281949990] [2024-06-27 18:29:07,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:07,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:08,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:08,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:08,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281949990] [2024-06-27 18:29:08,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281949990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:08,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:08,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:29:08,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592396504] [2024-06-27 18:29:08,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:08,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:29:08,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:08,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:29:08,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:29:09,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:09,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 106 transitions, 797 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:09,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:09,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:09,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:10,134 INFO L124 PetriNetUnfolderBase]: 4598/7093 cut-off events. [2024-06-27 18:29:10,135 INFO L125 PetriNetUnfolderBase]: For 44381/44381 co-relation queries the response was YES. [2024-06-27 18:29:10,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28362 conditions, 7093 events. 4598/7093 cut-off events. For 44381/44381 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 42304 event pairs, 1315 based on Foata normal form. 4/7036 useless extension candidates. Maximal degree in co-relation 28324. Up to 6429 conditions per place. [2024-06-27 18:29:10,179 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 116 selfloop transitions, 29 changer transitions 0/156 dead transitions. [2024-06-27 18:29:10,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 156 transitions, 1223 flow [2024-06-27 18:29:10,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:10,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:10,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 18:29:10,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286458333333334 [2024-06-27 18:29:10,183 INFO L175 Difference]: Start difference. First operand has 97 places, 106 transitions, 797 flow. Second operand 8 states and 203 transitions. [2024-06-27 18:29:10,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 156 transitions, 1223 flow [2024-06-27 18:29:10,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 156 transitions, 1124 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-27 18:29:10,236 INFO L231 Difference]: Finished difference. Result has 101 places, 106 transitions, 765 flow [2024-06-27 18:29:10,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=765, PETRI_PLACES=101, PETRI_TRANSITIONS=106} [2024-06-27 18:29:10,236 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 47 predicate places. [2024-06-27 18:29:10,237 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 106 transitions, 765 flow [2024-06-27 18:29:10,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:10,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:10,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:10,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:29:10,237 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:10,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:10,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1863133723, now seen corresponding path program 3 times [2024-06-27 18:29:10,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:10,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249529520] [2024-06-27 18:29:10,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:10,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:11,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:11,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249529520] [2024-06-27 18:29:11,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249529520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:11,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:11,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:29:11,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877127547] [2024-06-27 18:29:11,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:11,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:29:11,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:11,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:29:11,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:29:11,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:11,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 106 transitions, 765 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:11,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:11,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:11,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:12,636 INFO L124 PetriNetUnfolderBase]: 4653/7108 cut-off events. [2024-06-27 18:29:12,636 INFO L125 PetriNetUnfolderBase]: For 48032/48032 co-relation queries the response was YES. [2024-06-27 18:29:12,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28902 conditions, 7108 events. 4653/7108 cut-off events. For 48032/48032 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 41959 event pairs, 1103 based on Foata normal form. 4/7069 useless extension candidates. Maximal degree in co-relation 28862. Up to 6222 conditions per place. [2024-06-27 18:29:12,685 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 107 selfloop transitions, 54 changer transitions 0/172 dead transitions. [2024-06-27 18:29:12,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 172 transitions, 1469 flow [2024-06-27 18:29:12,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:12,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:12,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-27 18:29:12,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5442708333333334 [2024-06-27 18:29:12,687 INFO L175 Difference]: Start difference. First operand has 101 places, 106 transitions, 765 flow. Second operand 8 states and 209 transitions. [2024-06-27 18:29:12,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 172 transitions, 1469 flow [2024-06-27 18:29:12,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 172 transitions, 1402 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:12,724 INFO L231 Difference]: Finished difference. Result has 103 places, 118 transitions, 1013 flow [2024-06-27 18:29:12,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1013, PETRI_PLACES=103, PETRI_TRANSITIONS=118} [2024-06-27 18:29:12,725 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 49 predicate places. [2024-06-27 18:29:12,725 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 118 transitions, 1013 flow [2024-06-27 18:29:12,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:12,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:12,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:12,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:29:12,726 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:12,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:12,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1242778093, now seen corresponding path program 1 times [2024-06-27 18:29:12,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:12,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136542053] [2024-06-27 18:29:12,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:12,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:13,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:13,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:13,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136542053] [2024-06-27 18:29:13,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136542053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:13,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:13,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:29:13,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161356024] [2024-06-27 18:29:13,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:13,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:29:13,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:13,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:29:13,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:29:14,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:29:14,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 118 transitions, 1013 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:14,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:14,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:29:14,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:15,191 INFO L124 PetriNetUnfolderBase]: 4968/7850 cut-off events. [2024-06-27 18:29:15,191 INFO L125 PetriNetUnfolderBase]: For 60610/60610 co-relation queries the response was YES. [2024-06-27 18:29:15,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32980 conditions, 7850 events. 4968/7850 cut-off events. For 60610/60610 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 48432 event pairs, 1870 based on Foata normal form. 2/7709 useless extension candidates. Maximal degree in co-relation 32938. Up to 6977 conditions per place. [2024-06-27 18:29:15,255 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 127 selfloop transitions, 24 changer transitions 0/160 dead transitions. [2024-06-27 18:29:15,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 160 transitions, 1485 flow [2024-06-27 18:29:15,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:29:15,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:29:15,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 18:29:15,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-27 18:29:15,256 INFO L175 Difference]: Start difference. First operand has 103 places, 118 transitions, 1013 flow. Second operand 7 states and 167 transitions. [2024-06-27 18:29:15,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 160 transitions, 1485 flow [2024-06-27 18:29:15,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 160 transitions, 1365 flow, removed 48 selfloop flow, removed 3 redundant places. [2024-06-27 18:29:15,322 INFO L231 Difference]: Finished difference. Result has 107 places, 124 transitions, 1037 flow [2024-06-27 18:29:15,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1037, PETRI_PLACES=107, PETRI_TRANSITIONS=124} [2024-06-27 18:29:15,322 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 53 predicate places. [2024-06-27 18:29:15,323 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 124 transitions, 1037 flow [2024-06-27 18:29:15,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:15,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:15,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:15,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:29:15,323 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:15,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:15,324 INFO L85 PathProgramCache]: Analyzing trace with hash 945364559, now seen corresponding path program 4 times [2024-06-27 18:29:15,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:15,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855991607] [2024-06-27 18:29:15,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:15,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:16,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:16,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:16,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855991607] [2024-06-27 18:29:16,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855991607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:16,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:16,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:29:16,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221425942] [2024-06-27 18:29:16,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:16,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:29:16,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:16,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:29:16,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:29:16,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:16,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 124 transitions, 1037 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:16,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:16,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:16,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:17,759 INFO L124 PetriNetUnfolderBase]: 4692/7476 cut-off events. [2024-06-27 18:29:17,760 INFO L125 PetriNetUnfolderBase]: For 55898/55898 co-relation queries the response was YES. [2024-06-27 18:29:17,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30475 conditions, 7476 events. 4692/7476 cut-off events. For 55898/55898 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 47206 event pairs, 1577 based on Foata normal form. 6/7347 useless extension candidates. Maximal degree in co-relation 30432. Up to 6381 conditions per place. [2024-06-27 18:29:17,805 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 129 selfloop transitions, 38 changer transitions 0/178 dead transitions. [2024-06-27 18:29:17,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 178 transitions, 1659 flow [2024-06-27 18:29:17,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:17,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:17,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 18:29:17,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-06-27 18:29:17,807 INFO L175 Difference]: Start difference. First operand has 107 places, 124 transitions, 1037 flow. Second operand 8 states and 201 transitions. [2024-06-27 18:29:17,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 178 transitions, 1659 flow [2024-06-27 18:29:17,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 178 transitions, 1593 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 18:29:17,851 INFO L231 Difference]: Finished difference. Result has 111 places, 130 transitions, 1174 flow [2024-06-27 18:29:17,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=971, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1174, PETRI_PLACES=111, PETRI_TRANSITIONS=130} [2024-06-27 18:29:17,852 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 57 predicate places. [2024-06-27 18:29:17,852 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 130 transitions, 1174 flow [2024-06-27 18:29:17,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:17,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:17,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:17,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:29:17,853 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:17,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:17,854 INFO L85 PathProgramCache]: Analyzing trace with hash 902322769, now seen corresponding path program 1 times [2024-06-27 18:29:17,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:17,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040012883] [2024-06-27 18:29:17,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:17,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:18,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:18,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:18,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040012883] [2024-06-27 18:29:18,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040012883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:18,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:18,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:29:18,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999608227] [2024-06-27 18:29:18,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:18,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:29:18,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:18,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:29:18,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:29:18,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:29:18,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 130 transitions, 1174 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:18,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:18,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:29:18,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:19,551 INFO L124 PetriNetUnfolderBase]: 5232/8168 cut-off events. [2024-06-27 18:29:19,551 INFO L125 PetriNetUnfolderBase]: For 72279/72353 co-relation queries the response was YES. [2024-06-27 18:29:19,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34489 conditions, 8168 events. 5232/8168 cut-off events. For 72279/72353 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 50313 event pairs, 2114 based on Foata normal form. 15/7990 useless extension candidates. Maximal degree in co-relation 34444. Up to 7435 conditions per place. [2024-06-27 18:29:19,614 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 122 selfloop transitions, 14 changer transitions 0/153 dead transitions. [2024-06-27 18:29:19,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 153 transitions, 1522 flow [2024-06-27 18:29:19,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:29:19,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:29:19,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-27 18:29:19,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-27 18:29:19,617 INFO L175 Difference]: Start difference. First operand has 111 places, 130 transitions, 1174 flow. Second operand 6 states and 135 transitions. [2024-06-27 18:29:19,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 153 transitions, 1522 flow [2024-06-27 18:29:19,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 153 transitions, 1365 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-27 18:29:19,684 INFO L231 Difference]: Finished difference. Result has 111 places, 133 transitions, 1081 flow [2024-06-27 18:29:19,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1081, PETRI_PLACES=111, PETRI_TRANSITIONS=133} [2024-06-27 18:29:19,685 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 57 predicate places. [2024-06-27 18:29:19,685 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 133 transitions, 1081 flow [2024-06-27 18:29:19,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:19,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:19,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:19,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:29:19,686 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:19,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:19,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1015497008, now seen corresponding path program 1 times [2024-06-27 18:29:19,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:19,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631405744] [2024-06-27 18:29:19,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:19,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:21,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:21,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:21,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631405744] [2024-06-27 18:29:21,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631405744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:21,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:21,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:21,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817457228] [2024-06-27 18:29:21,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:21,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:21,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:21,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:21,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:21,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:21,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 133 transitions, 1081 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:21,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:21,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:21,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:22,696 INFO L124 PetriNetUnfolderBase]: 5222/7941 cut-off events. [2024-06-27 18:29:22,696 INFO L125 PetriNetUnfolderBase]: For 87672/87672 co-relation queries the response was YES. [2024-06-27 18:29:22,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36819 conditions, 7941 events. 5222/7941 cut-off events. For 87672/87672 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 47969 event pairs, 1139 based on Foata normal form. 16/7881 useless extension candidates. Maximal degree in co-relation 36774. Up to 6741 conditions per place. [2024-06-27 18:29:22,758 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 165 selfloop transitions, 38 changer transitions 0/215 dead transitions. [2024-06-27 18:29:22,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 215 transitions, 1849 flow [2024-06-27 18:29:22,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:22,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:22,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 263 transitions. [2024-06-27 18:29:22,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5479166666666667 [2024-06-27 18:29:22,761 INFO L175 Difference]: Start difference. First operand has 111 places, 133 transitions, 1081 flow. Second operand 10 states and 263 transitions. [2024-06-27 18:29:22,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 215 transitions, 1849 flow [2024-06-27 18:29:22,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 215 transitions, 1807 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 18:29:22,832 INFO L231 Difference]: Finished difference. Result has 117 places, 135 transitions, 1171 flow [2024-06-27 18:29:22,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1171, PETRI_PLACES=117, PETRI_TRANSITIONS=135} [2024-06-27 18:29:22,833 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 63 predicate places. [2024-06-27 18:29:22,833 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 135 transitions, 1171 flow [2024-06-27 18:29:22,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:22,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:22,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:22,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:29:22,834 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:22,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:22,834 INFO L85 PathProgramCache]: Analyzing trace with hash 789651788, now seen corresponding path program 2 times [2024-06-27 18:29:22,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:22,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683592509] [2024-06-27 18:29:22,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:22,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:24,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:24,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:24,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683592509] [2024-06-27 18:29:24,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683592509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:24,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:24,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:24,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048191223] [2024-06-27 18:29:24,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:24,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:24,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:24,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:24,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:24,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:24,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 135 transitions, 1171 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:24,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:24,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:24,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:25,658 INFO L124 PetriNetUnfolderBase]: 5385/8218 cut-off events. [2024-06-27 18:29:25,658 INFO L125 PetriNetUnfolderBase]: For 100072/100072 co-relation queries the response was YES. [2024-06-27 18:29:25,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39073 conditions, 8218 events. 5385/8218 cut-off events. For 100072/100072 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 50168 event pairs, 1450 based on Foata normal form. 20/8166 useless extension candidates. Maximal degree in co-relation 39027. Up to 7281 conditions per place. [2024-06-27 18:29:25,709 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 163 selfloop transitions, 36 changer transitions 0/211 dead transitions. [2024-06-27 18:29:25,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 211 transitions, 1819 flow [2024-06-27 18:29:25,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:25,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:25,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-06-27 18:29:25,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5395833333333333 [2024-06-27 18:29:25,710 INFO L175 Difference]: Start difference. First operand has 117 places, 135 transitions, 1171 flow. Second operand 10 states and 259 transitions. [2024-06-27 18:29:25,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 211 transitions, 1819 flow [2024-06-27 18:29:25,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 211 transitions, 1760 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 18:29:25,787 INFO L231 Difference]: Finished difference. Result has 121 places, 136 transitions, 1219 flow [2024-06-27 18:29:25,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1219, PETRI_PLACES=121, PETRI_TRANSITIONS=136} [2024-06-27 18:29:25,788 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 67 predicate places. [2024-06-27 18:29:25,788 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 136 transitions, 1219 flow [2024-06-27 18:29:25,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:25,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:25,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:25,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:29:25,788 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:25,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:25,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1807280324, now seen corresponding path program 3 times [2024-06-27 18:29:25,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:25,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459292128] [2024-06-27 18:29:25,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:25,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:27,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:27,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:27,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459292128] [2024-06-27 18:29:27,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459292128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:27,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:27,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:27,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278881691] [2024-06-27 18:29:27,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:27,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:27,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:27,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:27,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:27,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:27,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 136 transitions, 1219 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:27,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:27,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:27,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:28,554 INFO L124 PetriNetUnfolderBase]: 5346/8171 cut-off events. [2024-06-27 18:29:28,554 INFO L125 PetriNetUnfolderBase]: For 100811/100811 co-relation queries the response was YES. [2024-06-27 18:29:28,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38727 conditions, 8171 events. 5346/8171 cut-off events. For 100811/100811 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 49961 event pairs, 1412 based on Foata normal form. 20/8121 useless extension candidates. Maximal degree in co-relation 38679. Up to 7279 conditions per place. [2024-06-27 18:29:28,614 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 157 selfloop transitions, 30 changer transitions 0/199 dead transitions. [2024-06-27 18:29:28,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 199 transitions, 1783 flow [2024-06-27 18:29:28,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:28,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:28,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-27 18:29:28,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5324074074074074 [2024-06-27 18:29:28,615 INFO L175 Difference]: Start difference. First operand has 121 places, 136 transitions, 1219 flow. Second operand 9 states and 230 transitions. [2024-06-27 18:29:28,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 199 transitions, 1783 flow [2024-06-27 18:29:28,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 199 transitions, 1700 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 18:29:28,714 INFO L231 Difference]: Finished difference. Result has 122 places, 136 transitions, 1203 flow [2024-06-27 18:29:28,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1203, PETRI_PLACES=122, PETRI_TRANSITIONS=136} [2024-06-27 18:29:28,715 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 68 predicate places. [2024-06-27 18:29:28,715 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 136 transitions, 1203 flow [2024-06-27 18:29:28,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:28,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:28,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:28,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:29:28,715 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:28,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:28,716 INFO L85 PathProgramCache]: Analyzing trace with hash -897164180, now seen corresponding path program 1 times [2024-06-27 18:29:28,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:28,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113506576] [2024-06-27 18:29:28,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:28,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:30,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:30,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:30,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113506576] [2024-06-27 18:29:30,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113506576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:30,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:30,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:30,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972908952] [2024-06-27 18:29:30,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:30,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:30,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:30,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:30,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:30,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:29:30,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 136 transitions, 1203 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:30,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:30,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:29:30,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:31,458 INFO L124 PetriNetUnfolderBase]: 5738/9058 cut-off events. [2024-06-27 18:29:31,458 INFO L125 PetriNetUnfolderBase]: For 104907/104909 co-relation queries the response was YES. [2024-06-27 18:29:31,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41415 conditions, 9058 events. 5738/9058 cut-off events. For 104907/104909 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 57355 event pairs, 1720 based on Foata normal form. 4/8851 useless extension candidates. Maximal degree in co-relation 41366. Up to 7987 conditions per place. [2024-06-27 18:29:31,533 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 152 selfloop transitions, 28 changer transitions 0/190 dead transitions. [2024-06-27 18:29:31,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 190 transitions, 1761 flow [2024-06-27 18:29:31,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:31,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:31,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 18:29:31,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-27 18:29:31,534 INFO L175 Difference]: Start difference. First operand has 122 places, 136 transitions, 1203 flow. Second operand 8 states and 196 transitions. [2024-06-27 18:29:31,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 190 transitions, 1761 flow [2024-06-27 18:29:31,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 190 transitions, 1691 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 18:29:31,643 INFO L231 Difference]: Finished difference. Result has 123 places, 141 transitions, 1267 flow [2024-06-27 18:29:31,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1267, PETRI_PLACES=123, PETRI_TRANSITIONS=141} [2024-06-27 18:29:31,643 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 69 predicate places. [2024-06-27 18:29:31,644 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 141 transitions, 1267 flow [2024-06-27 18:29:31,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:31,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:31,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:31,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:29:31,644 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:31,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:31,645 INFO L85 PathProgramCache]: Analyzing trace with hash -897348878, now seen corresponding path program 4 times [2024-06-27 18:29:31,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:31,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288975566] [2024-06-27 18:29:31,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:31,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:33,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:33,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:33,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288975566] [2024-06-27 18:29:33,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288975566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:33,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:33,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:33,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788471379] [2024-06-27 18:29:33,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:33,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:33,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:33,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:33,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:33,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:33,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 141 transitions, 1267 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:33,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:33,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:33,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:34,451 INFO L124 PetriNetUnfolderBase]: 5514/8384 cut-off events. [2024-06-27 18:29:34,451 INFO L125 PetriNetUnfolderBase]: For 117668/117672 co-relation queries the response was YES. [2024-06-27 18:29:34,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40991 conditions, 8384 events. 5514/8384 cut-off events. For 117668/117672 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 51190 event pairs, 1301 based on Foata normal form. 20/8341 useless extension candidates. Maximal degree in co-relation 40940. Up to 7208 conditions per place. [2024-06-27 18:29:34,513 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 132 selfloop transitions, 63 changer transitions 0/208 dead transitions. [2024-06-27 18:29:34,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 208 transitions, 1973 flow [2024-06-27 18:29:34,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:34,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:34,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-27 18:29:34,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5462962962962963 [2024-06-27 18:29:34,515 INFO L175 Difference]: Start difference. First operand has 123 places, 141 transitions, 1267 flow. Second operand 9 states and 236 transitions. [2024-06-27 18:29:34,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 208 transitions, 1973 flow [2024-06-27 18:29:34,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 208 transitions, 1886 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 18:29:34,637 INFO L231 Difference]: Finished difference. Result has 127 places, 142 transitions, 1343 flow [2024-06-27 18:29:34,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1343, PETRI_PLACES=127, PETRI_TRANSITIONS=142} [2024-06-27 18:29:34,638 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 73 predicate places. [2024-06-27 18:29:34,638 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 142 transitions, 1343 flow [2024-06-27 18:29:34,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:34,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:34,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:34,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:29:34,638 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:34,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:34,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1718842704, now seen corresponding path program 1 times [2024-06-27 18:29:34,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:34,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649633993] [2024-06-27 18:29:34,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:34,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:35,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:35,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:35,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649633993] [2024-06-27 18:29:35,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649633993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:35,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:35,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:29:35,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445024787] [2024-06-27 18:29:35,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:35,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:29:35,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:35,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:29:35,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:29:35,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:35,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 142 transitions, 1343 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:35,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:35,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:35,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:36,550 INFO L124 PetriNetUnfolderBase]: 5713/9166 cut-off events. [2024-06-27 18:29:36,551 INFO L125 PetriNetUnfolderBase]: For 123170/123230 co-relation queries the response was YES. [2024-06-27 18:29:36,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42985 conditions, 9166 events. 5713/9166 cut-off events. For 123170/123230 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 59879 event pairs, 1901 based on Foata normal form. 14/8934 useless extension candidates. Maximal degree in co-relation 42933. Up to 8074 conditions per place. [2024-06-27 18:29:36,641 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 137 selfloop transitions, 20 changer transitions 0/178 dead transitions. [2024-06-27 18:29:36,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 178 transitions, 1843 flow [2024-06-27 18:29:36,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:29:36,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:29:36,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-27 18:29:36,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-27 18:29:36,642 INFO L175 Difference]: Start difference. First operand has 127 places, 142 transitions, 1343 flow. Second operand 6 states and 148 transitions. [2024-06-27 18:29:36,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 178 transitions, 1843 flow [2024-06-27 18:29:36,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 178 transitions, 1706 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:36,738 INFO L231 Difference]: Finished difference. Result has 127 places, 152 transitions, 1347 flow [2024-06-27 18:29:36,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1347, PETRI_PLACES=127, PETRI_TRANSITIONS=152} [2024-06-27 18:29:36,738 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 73 predicate places. [2024-06-27 18:29:36,738 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 152 transitions, 1347 flow [2024-06-27 18:29:36,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:36,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:36,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:36,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:29:36,739 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:36,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:36,739 INFO L85 PathProgramCache]: Analyzing trace with hash -752028006, now seen corresponding path program 2 times [2024-06-27 18:29:36,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:36,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40504204] [2024-06-27 18:29:36,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:36,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:37,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:37,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:37,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40504204] [2024-06-27 18:29:37,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40504204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:37,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:37,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:37,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266220325] [2024-06-27 18:29:37,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:37,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:37,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:37,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:37,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:37,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:29:37,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 152 transitions, 1347 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:37,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:37,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:29:37,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:39,175 INFO L124 PetriNetUnfolderBase]: 6106/9700 cut-off events. [2024-06-27 18:29:39,175 INFO L125 PetriNetUnfolderBase]: For 133935/133935 co-relation queries the response was YES. [2024-06-27 18:29:39,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46516 conditions, 9700 events. 6106/9700 cut-off events. For 133935/133935 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 62683 event pairs, 2205 based on Foata normal form. 4/9494 useless extension candidates. Maximal degree in co-relation 46462. Up to 8630 conditions per place. [2024-06-27 18:29:39,259 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 166 selfloop transitions, 19 changer transitions 0/195 dead transitions. [2024-06-27 18:29:39,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 195 transitions, 1876 flow [2024-06-27 18:29:39,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:39,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:39,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 18:29:39,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-27 18:29:39,260 INFO L175 Difference]: Start difference. First operand has 127 places, 152 transitions, 1347 flow. Second operand 8 states and 186 transitions. [2024-06-27 18:29:39,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 195 transitions, 1876 flow [2024-06-27 18:29:39,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 195 transitions, 1854 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-06-27 18:29:39,399 INFO L231 Difference]: Finished difference. Result has 135 places, 156 transitions, 1436 flow [2024-06-27 18:29:39,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1325, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1436, PETRI_PLACES=135, PETRI_TRANSITIONS=156} [2024-06-27 18:29:39,400 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 81 predicate places. [2024-06-27 18:29:39,400 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 156 transitions, 1436 flow [2024-06-27 18:29:39,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:39,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:39,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:39,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:29:39,401 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:39,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:39,401 INFO L85 PathProgramCache]: Analyzing trace with hash 598013986, now seen corresponding path program 3 times [2024-06-27 18:29:39,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:39,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999313270] [2024-06-27 18:29:39,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:39,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:39,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:40,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:40,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:40,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999313270] [2024-06-27 18:29:40,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999313270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:40,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:40,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:40,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284462167] [2024-06-27 18:29:40,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:40,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:40,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:40,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:40,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:40,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:29:40,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 156 transitions, 1436 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:40,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:40,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:29:40,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:41,813 INFO L124 PetriNetUnfolderBase]: 6143/9771 cut-off events. [2024-06-27 18:29:41,813 INFO L125 PetriNetUnfolderBase]: For 146298/146298 co-relation queries the response was YES. [2024-06-27 18:29:41,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47732 conditions, 9771 events. 6143/9771 cut-off events. For 146298/146298 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 63236 event pairs, 2196 based on Foata normal form. 4/9561 useless extension candidates. Maximal degree in co-relation 47674. Up to 8673 conditions per place. [2024-06-27 18:29:42,046 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 170 selfloop transitions, 22 changer transitions 0/202 dead transitions. [2024-06-27 18:29:42,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 202 transitions, 2008 flow [2024-06-27 18:29:42,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:42,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:42,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 18:29:42,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817708333333333 [2024-06-27 18:29:42,048 INFO L175 Difference]: Start difference. First operand has 135 places, 156 transitions, 1436 flow. Second operand 8 states and 185 transitions. [2024-06-27 18:29:42,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 202 transitions, 2008 flow [2024-06-27 18:29:42,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 202 transitions, 1939 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-27 18:29:42,138 INFO L231 Difference]: Finished difference. Result has 141 places, 165 transitions, 1544 flow [2024-06-27 18:29:42,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1544, PETRI_PLACES=141, PETRI_TRANSITIONS=165} [2024-06-27 18:29:42,138 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 87 predicate places. [2024-06-27 18:29:42,139 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 165 transitions, 1544 flow [2024-06-27 18:29:42,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:42,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:42,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:42,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:29:42,139 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:42,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:42,140 INFO L85 PathProgramCache]: Analyzing trace with hash -758284116, now seen corresponding path program 4 times [2024-06-27 18:29:42,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:42,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315059840] [2024-06-27 18:29:42,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:42,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:43,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:43,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:43,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315059840] [2024-06-27 18:29:43,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315059840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:43,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:43,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:29:43,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031167228] [2024-06-27 18:29:43,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:43,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:29:43,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:43,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:29:43,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:29:43,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:29:43,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 165 transitions, 1544 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:43,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:43,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:29:43,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:44,839 INFO L124 PetriNetUnfolderBase]: 6180/9816 cut-off events. [2024-06-27 18:29:44,839 INFO L125 PetriNetUnfolderBase]: For 160637/160637 co-relation queries the response was YES. [2024-06-27 18:29:44,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49366 conditions, 9816 events. 6180/9816 cut-off events. For 160637/160637 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 63470 event pairs, 2192 based on Foata normal form. 4/9608 useless extension candidates. Maximal degree in co-relation 49305. Up to 8691 conditions per place. [2024-06-27 18:29:44,927 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 178 selfloop transitions, 24 changer transitions 0/212 dead transitions. [2024-06-27 18:29:44,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 212 transitions, 2161 flow [2024-06-27 18:29:44,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:44,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:44,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 18:29:44,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-06-27 18:29:44,928 INFO L175 Difference]: Start difference. First operand has 141 places, 165 transitions, 1544 flow. Second operand 8 states and 190 transitions. [2024-06-27 18:29:44,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 212 transitions, 2161 flow [2024-06-27 18:29:45,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 212 transitions, 2078 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-27 18:29:45,062 INFO L231 Difference]: Finished difference. Result has 146 places, 170 transitions, 1613 flow [2024-06-27 18:29:45,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1461, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1613, PETRI_PLACES=146, PETRI_TRANSITIONS=170} [2024-06-27 18:29:45,063 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 92 predicate places. [2024-06-27 18:29:45,063 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 170 transitions, 1613 flow [2024-06-27 18:29:45,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:45,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:45,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:45,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:29:45,064 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:45,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:45,065 INFO L85 PathProgramCache]: Analyzing trace with hash 332729068, now seen corresponding path program 5 times [2024-06-27 18:29:45,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:45,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573185450] [2024-06-27 18:29:45,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:45,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:46,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:46,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:46,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573185450] [2024-06-27 18:29:46,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573185450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:46,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:46,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:46,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240376034] [2024-06-27 18:29:46,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:46,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:46,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:46,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:46,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:46,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:46,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 170 transitions, 1613 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:46,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:46,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:46,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:47,734 INFO L124 PetriNetUnfolderBase]: 5803/9266 cut-off events. [2024-06-27 18:29:47,734 INFO L125 PetriNetUnfolderBase]: For 172980/172984 co-relation queries the response was YES. [2024-06-27 18:29:47,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47799 conditions, 9266 events. 5803/9266 cut-off events. For 172980/172984 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 61085 event pairs, 1930 based on Foata normal form. 20/9097 useless extension candidates. Maximal degree in co-relation 47736. Up to 7772 conditions per place. [2024-06-27 18:29:47,815 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 172 selfloop transitions, 44 changer transitions 0/231 dead transitions. [2024-06-27 18:29:47,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 231 transitions, 2387 flow [2024-06-27 18:29:47,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:47,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:47,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-27 18:29:47,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-27 18:29:47,816 INFO L175 Difference]: Start difference. First operand has 146 places, 170 transitions, 1613 flow. Second operand 9 states and 228 transitions. [2024-06-27 18:29:47,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 231 transitions, 2387 flow [2024-06-27 18:29:47,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 231 transitions, 2286 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-27 18:29:47,941 INFO L231 Difference]: Finished difference. Result has 150 places, 171 transitions, 1645 flow [2024-06-27 18:29:47,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1512, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1645, PETRI_PLACES=150, PETRI_TRANSITIONS=171} [2024-06-27 18:29:47,942 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 96 predicate places. [2024-06-27 18:29:47,942 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 171 transitions, 1645 flow [2024-06-27 18:29:47,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:47,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:47,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:47,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:29:47,943 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:47,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:47,943 INFO L85 PathProgramCache]: Analyzing trace with hash -493509644, now seen corresponding path program 1 times [2024-06-27 18:29:47,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:47,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554378660] [2024-06-27 18:29:47,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:47,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:49,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:49,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:49,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554378660] [2024-06-27 18:29:49,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554378660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:49,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:49,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:49,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928446981] [2024-06-27 18:29:49,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:49,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:49,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:49,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:49,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:49,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:29:49,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 171 transitions, 1645 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:49,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:49,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:29:49,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:50,564 INFO L124 PetriNetUnfolderBase]: 6297/10032 cut-off events. [2024-06-27 18:29:50,564 INFO L125 PetriNetUnfolderBase]: For 179398/179398 co-relation queries the response was YES. [2024-06-27 18:29:50,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51501 conditions, 10032 events. 6297/10032 cut-off events. For 179398/179398 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 65402 event pairs, 2202 based on Foata normal form. 2/9812 useless extension candidates. Maximal degree in co-relation 51437. Up to 8837 conditions per place. [2024-06-27 18:29:50,647 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 176 selfloop transitions, 34 changer transitions 0/220 dead transitions. [2024-06-27 18:29:50,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 220 transitions, 2268 flow [2024-06-27 18:29:50,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:50,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:50,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 18:29:50,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-06-27 18:29:50,649 INFO L175 Difference]: Start difference. First operand has 150 places, 171 transitions, 1645 flow. Second operand 8 states and 191 transitions. [2024-06-27 18:29:50,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 220 transitions, 2268 flow [2024-06-27 18:29:50,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 220 transitions, 2101 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:50,813 INFO L231 Difference]: Finished difference. Result has 151 places, 177 transitions, 1649 flow [2024-06-27 18:29:50,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1514, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1649, PETRI_PLACES=151, PETRI_TRANSITIONS=177} [2024-06-27 18:29:50,814 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 97 predicate places. [2024-06-27 18:29:50,814 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 177 transitions, 1649 flow [2024-06-27 18:29:50,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:50,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:50,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:50,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:29:50,814 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:50,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:50,815 INFO L85 PathProgramCache]: Analyzing trace with hash -493509396, now seen corresponding path program 5 times [2024-06-27 18:29:50,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:50,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220053836] [2024-06-27 18:29:50,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:50,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:51,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:51,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:51,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220053836] [2024-06-27 18:29:51,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220053836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:51,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:51,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:51,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215404781] [2024-06-27 18:29:51,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:51,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:51,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:51,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:51,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:52,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:29:52,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 177 transitions, 1649 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:52,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:52,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:29:52,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:53,557 INFO L124 PetriNetUnfolderBase]: 6297/10039 cut-off events. [2024-06-27 18:29:53,557 INFO L125 PetriNetUnfolderBase]: For 177141/177141 co-relation queries the response was YES. [2024-06-27 18:29:53,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50666 conditions, 10039 events. 6297/10039 cut-off events. For 177141/177141 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 65492 event pairs, 2238 based on Foata normal form. 4/9819 useless extension candidates. Maximal degree in co-relation 50601. Up to 8834 conditions per place. [2024-06-27 18:29:53,649 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 180 selfloop transitions, 32 changer transitions 0/222 dead transitions. [2024-06-27 18:29:53,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 222 transitions, 2253 flow [2024-06-27 18:29:53,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:53,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:53,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 18:29:53,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-06-27 18:29:53,651 INFO L175 Difference]: Start difference. First operand has 151 places, 177 transitions, 1649 flow. Second operand 8 states and 190 transitions. [2024-06-27 18:29:53,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 222 transitions, 2253 flow [2024-06-27 18:29:53,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 222 transitions, 2193 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 18:29:53,803 INFO L231 Difference]: Finished difference. Result has 153 places, 179 transitions, 1725 flow [2024-06-27 18:29:53,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1589, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1725, PETRI_PLACES=153, PETRI_TRANSITIONS=179} [2024-06-27 18:29:53,804 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 99 predicate places. [2024-06-27 18:29:53,804 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 179 transitions, 1725 flow [2024-06-27 18:29:53,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:53,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:53,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:53,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:29:53,805 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:53,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:53,806 INFO L85 PathProgramCache]: Analyzing trace with hash -2092778482, now seen corresponding path program 2 times [2024-06-27 18:29:53,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:53,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348636640] [2024-06-27 18:29:53,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:53,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:54,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:54,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:54,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348636640] [2024-06-27 18:29:54,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348636640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:54,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:54,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:29:54,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205813766] [2024-06-27 18:29:54,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:54,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:29:54,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:54,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:29:54,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:29:54,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:29:54,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 179 transitions, 1725 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:54,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:54,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:29:54,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:55,833 INFO L124 PetriNetUnfolderBase]: 5897/9584 cut-off events. [2024-06-27 18:29:55,833 INFO L125 PetriNetUnfolderBase]: For 174129/174178 co-relation queries the response was YES. [2024-06-27 18:29:55,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47419 conditions, 9584 events. 5897/9584 cut-off events. For 174129/174178 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 64196 event pairs, 2231 based on Foata normal form. 26/9374 useless extension candidates. Maximal degree in co-relation 47353. Up to 8404 conditions per place. [2024-06-27 18:29:55,915 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 157 selfloop transitions, 13 changer transitions 0/196 dead transitions. [2024-06-27 18:29:55,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 196 transitions, 2113 flow [2024-06-27 18:29:55,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:29:55,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:29:55,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-27 18:29:55,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 18:29:55,917 INFO L175 Difference]: Start difference. First operand has 153 places, 179 transitions, 1725 flow. Second operand 6 states and 138 transitions. [2024-06-27 18:29:55,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 196 transitions, 2113 flow [2024-06-27 18:29:56,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 196 transitions, 1985 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 18:29:56,084 INFO L231 Difference]: Finished difference. Result has 153 places, 179 transitions, 1629 flow [2024-06-27 18:29:56,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1597, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1629, PETRI_PLACES=153, PETRI_TRANSITIONS=179} [2024-06-27 18:29:56,084 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 99 predicate places. [2024-06-27 18:29:56,084 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 179 transitions, 1629 flow [2024-06-27 18:29:56,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:56,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:56,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:56,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:29:56,085 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:56,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:56,086 INFO L85 PathProgramCache]: Analyzing trace with hash -386004377, now seen corresponding path program 1 times [2024-06-27 18:29:56,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:56,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085453364] [2024-06-27 18:29:56,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:56,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:56,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:56,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:56,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085453364] [2024-06-27 18:29:56,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085453364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:56,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:56,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:29:56,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299009719] [2024-06-27 18:29:56,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:56,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:29:56,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:56,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:29:56,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:29:56,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:29:56,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 179 transitions, 1629 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:56,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:56,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:29:56,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:58,150 INFO L124 PetriNetUnfolderBase]: 6308/10072 cut-off events. [2024-06-27 18:29:58,150 INFO L125 PetriNetUnfolderBase]: For 180149/180149 co-relation queries the response was YES. [2024-06-27 18:29:58,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50512 conditions, 10072 events. 6308/10072 cut-off events. For 180149/180149 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 65883 event pairs, 2231 based on Foata normal form. 1/9845 useless extension candidates. Maximal degree in co-relation 50445. Up to 8971 conditions per place. [2024-06-27 18:29:58,239 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 175 selfloop transitions, 24 changer transitions 0/209 dead transitions. [2024-06-27 18:29:58,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 209 transitions, 2213 flow [2024-06-27 18:29:58,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:29:58,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:29:58,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-27 18:29:58,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-27 18:29:58,240 INFO L175 Difference]: Start difference. First operand has 153 places, 179 transitions, 1629 flow. Second operand 6 states and 141 transitions. [2024-06-27 18:29:58,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 209 transitions, 2213 flow [2024-06-27 18:29:58,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 209 transitions, 2166 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:29:58,388 INFO L231 Difference]: Finished difference. Result has 154 places, 185 transitions, 1695 flow [2024-06-27 18:29:58,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1695, PETRI_PLACES=154, PETRI_TRANSITIONS=185} [2024-06-27 18:29:58,388 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 100 predicate places. [2024-06-27 18:29:58,389 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 185 transitions, 1695 flow [2024-06-27 18:29:58,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:58,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:58,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:58,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:29:58,389 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:58,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:58,390 INFO L85 PathProgramCache]: Analyzing trace with hash -2076684429, now seen corresponding path program 2 times [2024-06-27 18:29:58,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:58,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208381542] [2024-06-27 18:29:58,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:58,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:58,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:58,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:58,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208381542] [2024-06-27 18:29:58,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208381542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:58,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:58,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:29:58,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894488615] [2024-06-27 18:29:58,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:58,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:29:58,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:59,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:29:59,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:29:59,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:29:59,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 185 transitions, 1695 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:59,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:59,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:29:59,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:00,375 INFO L124 PetriNetUnfolderBase]: 6305/10066 cut-off events. [2024-06-27 18:30:00,376 INFO L125 PetriNetUnfolderBase]: For 190784/190786 co-relation queries the response was YES. [2024-06-27 18:30:00,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51658 conditions, 10066 events. 6305/10066 cut-off events. For 190784/190786 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 65821 event pairs, 2257 based on Foata normal form. 3/9842 useless extension candidates. Maximal degree in co-relation 51591. Up to 8968 conditions per place. [2024-06-27 18:30:00,486 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 171 selfloop transitions, 24 changer transitions 0/205 dead transitions. [2024-06-27 18:30:00,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 205 transitions, 2149 flow [2024-06-27 18:30:00,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:30:00,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:30:00,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-27 18:30:00,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756944444444444 [2024-06-27 18:30:00,487 INFO L175 Difference]: Start difference. First operand has 154 places, 185 transitions, 1695 flow. Second operand 6 states and 137 transitions. [2024-06-27 18:30:00,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 205 transitions, 2149 flow [2024-06-27 18:30:00,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 205 transitions, 2098 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-27 18:30:00,665 INFO L231 Difference]: Finished difference. Result has 158 places, 185 transitions, 1699 flow [2024-06-27 18:30:00,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1644, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1699, PETRI_PLACES=158, PETRI_TRANSITIONS=185} [2024-06-27 18:30:00,666 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 104 predicate places. [2024-06-27 18:30:00,666 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 185 transitions, 1699 flow [2024-06-27 18:30:00,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:00,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:00,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:00,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:30:00,666 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:00,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:00,667 INFO L85 PathProgramCache]: Analyzing trace with hash -2092763633, now seen corresponding path program 1 times [2024-06-27 18:30:00,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:00,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015120352] [2024-06-27 18:30:00,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:00,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:01,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:01,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:01,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015120352] [2024-06-27 18:30:01,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015120352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:01,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:01,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:30:01,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302704628] [2024-06-27 18:30:01,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:01,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:30:01,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:01,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:30:01,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:30:01,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:30:01,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 185 transitions, 1699 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:01,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:01,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:30:01,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:02,787 INFO L124 PetriNetUnfolderBase]: 6253/9956 cut-off events. [2024-06-27 18:30:02,787 INFO L125 PetriNetUnfolderBase]: For 186355/186404 co-relation queries the response was YES. [2024-06-27 18:30:02,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49350 conditions, 9956 events. 6253/9956 cut-off events. For 186355/186404 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 64888 event pairs, 2406 based on Foata normal form. 27/9763 useless extension candidates. Maximal degree in co-relation 49281. Up to 8943 conditions per place. [2024-06-27 18:30:02,888 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 170 selfloop transitions, 20 changer transitions 0/214 dead transitions. [2024-06-27 18:30:02,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 214 transitions, 2187 flow [2024-06-27 18:30:02,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:30:02,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:30:02,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-27 18:30:02,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-27 18:30:02,890 INFO L175 Difference]: Start difference. First operand has 158 places, 185 transitions, 1699 flow. Second operand 7 states and 157 transitions. [2024-06-27 18:30:02,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 214 transitions, 2187 flow [2024-06-27 18:30:03,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 214 transitions, 2119 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 18:30:03,069 INFO L231 Difference]: Finished difference. Result has 159 places, 188 transitions, 1715 flow [2024-06-27 18:30:03,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1715, PETRI_PLACES=159, PETRI_TRANSITIONS=188} [2024-06-27 18:30:03,070 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 105 predicate places. [2024-06-27 18:30:03,070 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 188 transitions, 1715 flow [2024-06-27 18:30:03,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:03,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:03,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:03,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:30:03,070 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:03,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:03,071 INFO L85 PathProgramCache]: Analyzing trace with hash 191270071, now seen corresponding path program 1 times [2024-06-27 18:30:03,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:03,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895388747] [2024-06-27 18:30:03,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:03,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:04,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:04,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:04,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895388747] [2024-06-27 18:30:04,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895388747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:04,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:04,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:30:04,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950217550] [2024-06-27 18:30:04,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:04,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:30:04,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:04,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:30:04,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:30:04,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:30:04,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 188 transitions, 1715 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:04,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:04,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:30:04,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:06,018 INFO L124 PetriNetUnfolderBase]: 6298/9938 cut-off events. [2024-06-27 18:30:06,018 INFO L125 PetriNetUnfolderBase]: For 206367/206371 co-relation queries the response was YES. [2024-06-27 18:30:06,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52436 conditions, 9938 events. 6298/9938 cut-off events. For 206367/206371 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 63804 event pairs, 1907 based on Foata normal form. 8/9719 useless extension candidates. Maximal degree in co-relation 52367. Up to 8887 conditions per place. [2024-06-27 18:30:06,113 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 220 selfloop transitions, 20 changer transitions 0/250 dead transitions. [2024-06-27 18:30:06,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 250 transitions, 2457 flow [2024-06-27 18:30:06,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:30:06,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:30:06,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-27 18:30:06,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023148148148148 [2024-06-27 18:30:06,114 INFO L175 Difference]: Start difference. First operand has 159 places, 188 transitions, 1715 flow. Second operand 9 states and 217 transitions. [2024-06-27 18:30:06,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 250 transitions, 2457 flow [2024-06-27 18:30:06,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 250 transitions, 2395 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 18:30:06,285 INFO L231 Difference]: Finished difference. Result has 164 places, 193 transitions, 1788 flow [2024-06-27 18:30:06,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1653, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1788, PETRI_PLACES=164, PETRI_TRANSITIONS=193} [2024-06-27 18:30:06,286 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 110 predicate places. [2024-06-27 18:30:06,286 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 193 transitions, 1788 flow [2024-06-27 18:30:06,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:06,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:06,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:06,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:30:06,286 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:06,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:06,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1507696737, now seen corresponding path program 2 times [2024-06-27 18:30:06,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:06,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951093938] [2024-06-27 18:30:06,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:06,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:07,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:07,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:07,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951093938] [2024-06-27 18:30:07,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951093938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:07,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:07,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:07,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160780040] [2024-06-27 18:30:07,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:07,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:07,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:07,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:07,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:07,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:30:07,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 193 transitions, 1788 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 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) [2024-06-27 18:30:07,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:07,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:30:07,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:09,253 INFO L124 PetriNetUnfolderBase]: 6378/10016 cut-off events. [2024-06-27 18:30:09,253 INFO L125 PetriNetUnfolderBase]: For 219818/219824 co-relation queries the response was YES. [2024-06-27 18:30:09,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54005 conditions, 10016 events. 6378/10016 cut-off events. For 219818/219824 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 63908 event pairs, 1740 based on Foata normal form. 8/9810 useless extension candidates. Maximal degree in co-relation 53934. Up to 8637 conditions per place. [2024-06-27 18:30:09,352 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 200 selfloop transitions, 47 changer transitions 0/257 dead transitions. [2024-06-27 18:30:09,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 257 transitions, 2564 flow [2024-06-27 18:30:09,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:30:09,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:30:09,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-27 18:30:09,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 18:30:09,353 INFO L175 Difference]: Start difference. First operand has 164 places, 193 transitions, 1788 flow. Second operand 9 states and 225 transitions. [2024-06-27 18:30:09,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 257 transitions, 2564 flow [2024-06-27 18:30:09,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 257 transitions, 2479 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 18:30:09,611 INFO L231 Difference]: Finished difference. Result has 168 places, 199 transitions, 1900 flow [2024-06-27 18:30:09,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1703, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1900, PETRI_PLACES=168, PETRI_TRANSITIONS=199} [2024-06-27 18:30:09,611 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 114 predicate places. [2024-06-27 18:30:09,611 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 199 transitions, 1900 flow [2024-06-27 18:30:09,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 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) [2024-06-27 18:30:09,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:09,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:09,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:30:09,612 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:09,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:09,612 INFO L85 PathProgramCache]: Analyzing trace with hash -2042292377, now seen corresponding path program 3 times [2024-06-27 18:30:09,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:09,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226719588] [2024-06-27 18:30:09,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:09,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:10,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:10,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:10,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226719588] [2024-06-27 18:30:10,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226719588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:10,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:10,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:10,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418154309] [2024-06-27 18:30:10,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:10,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:10,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:10,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:10,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:11,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:30:11,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 199 transitions, 1900 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 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) [2024-06-27 18:30:11,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:11,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:30:11,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:12,826 INFO L124 PetriNetUnfolderBase]: 6415/10086 cut-off events. [2024-06-27 18:30:12,827 INFO L125 PetriNetUnfolderBase]: For 236272/236278 co-relation queries the response was YES. [2024-06-27 18:30:12,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55590 conditions, 10086 events. 6415/10086 cut-off events. For 236272/236278 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 64519 event pairs, 1685 based on Foata normal form. 8/9878 useless extension candidates. Maximal degree in co-relation 55517. Up to 8692 conditions per place. [2024-06-27 18:30:12,928 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 200 selfloop transitions, 50 changer transitions 0/260 dead transitions. [2024-06-27 18:30:12,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 260 transitions, 2673 flow [2024-06-27 18:30:12,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:30:12,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:30:12,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 18:30:12,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162037037037037 [2024-06-27 18:30:12,929 INFO L175 Difference]: Start difference. First operand has 168 places, 199 transitions, 1900 flow. Second operand 9 states and 223 transitions. [2024-06-27 18:30:12,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 260 transitions, 2673 flow [2024-06-27 18:30:13,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 260 transitions, 2524 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 18:30:13,189 INFO L231 Difference]: Finished difference. Result has 171 places, 203 transitions, 1939 flow [2024-06-27 18:30:13,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1755, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1939, PETRI_PLACES=171, PETRI_TRANSITIONS=203} [2024-06-27 18:30:13,189 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 117 predicate places. [2024-06-27 18:30:13,189 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 203 transitions, 1939 flow [2024-06-27 18:30:13,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 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) [2024-06-27 18:30:13,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:13,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:13,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:30:13,190 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:13,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:13,190 INFO L85 PathProgramCache]: Analyzing trace with hash -2042284937, now seen corresponding path program 4 times [2024-06-27 18:30:13,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:13,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342953411] [2024-06-27 18:30:13,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:13,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:14,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:14,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:14,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342953411] [2024-06-27 18:30:14,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342953411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:14,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:14,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:14,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874544387] [2024-06-27 18:30:14,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:14,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:14,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:14,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:14,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:14,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:30:14,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 203 transitions, 1939 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 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) [2024-06-27 18:30:14,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:14,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:30:14,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:16,234 INFO L124 PetriNetUnfolderBase]: 6458/10179 cut-off events. [2024-06-27 18:30:16,235 INFO L125 PetriNetUnfolderBase]: For 249132/249138 co-relation queries the response was YES. [2024-06-27 18:30:16,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56471 conditions, 10179 events. 6458/10179 cut-off events. For 249132/249138 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 65379 event pairs, 1669 based on Foata normal form. 8/9961 useless extension candidates. Maximal degree in co-relation 56397. Up to 8612 conditions per place. [2024-06-27 18:30:16,340 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 195 selfloop transitions, 57 changer transitions 0/262 dead transitions. [2024-06-27 18:30:16,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 262 transitions, 2697 flow [2024-06-27 18:30:16,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:30:16,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:30:16,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 18:30:16,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162037037037037 [2024-06-27 18:30:16,342 INFO L175 Difference]: Start difference. First operand has 171 places, 203 transitions, 1939 flow. Second operand 9 states and 223 transitions. [2024-06-27 18:30:16,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 262 transitions, 2697 flow [2024-06-27 18:30:16,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 262 transitions, 2562 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-27 18:30:16,605 INFO L231 Difference]: Finished difference. Result has 175 places, 205 transitions, 1989 flow [2024-06-27 18:30:16,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1804, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1989, PETRI_PLACES=175, PETRI_TRANSITIONS=205} [2024-06-27 18:30:16,605 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 121 predicate places. [2024-06-27 18:30:16,605 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 205 transitions, 1989 flow [2024-06-27 18:30:16,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 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) [2024-06-27 18:30:16,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:16,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:16,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:30:16,606 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:16,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:16,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1744517841, now seen corresponding path program 1 times [2024-06-27 18:30:16,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:16,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823555490] [2024-06-27 18:30:16,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:16,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:17,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:17,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:17,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823555490] [2024-06-27 18:30:17,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823555490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:17,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:17,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:30:17,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867173877] [2024-06-27 18:30:17,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:17,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:30:17,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:17,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:30:17,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:30:17,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:30:17,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 205 transitions, 1989 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:17,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:17,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:30:17,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:18,962 INFO L124 PetriNetUnfolderBase]: 6456/10191 cut-off events. [2024-06-27 18:30:18,962 INFO L125 PetriNetUnfolderBase]: For 251180/251242 co-relation queries the response was YES. [2024-06-27 18:30:19,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55587 conditions, 10191 events. 6456/10191 cut-off events. For 251180/251242 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 65986 event pairs, 2028 based on Foata normal form. 31/9953 useless extension candidates. Maximal degree in co-relation 55512. Up to 9156 conditions per place. [2024-06-27 18:30:19,060 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 194 selfloop transitions, 28 changer transitions 0/246 dead transitions. [2024-06-27 18:30:19,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 246 transitions, 2713 flow [2024-06-27 18:30:19,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:30:19,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:30:19,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-27 18:30:19,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2024-06-27 18:30:19,062 INFO L175 Difference]: Start difference. First operand has 175 places, 205 transitions, 1989 flow. Second operand 7 states and 165 transitions. [2024-06-27 18:30:19,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 246 transitions, 2713 flow [2024-06-27 18:30:19,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 246 transitions, 2546 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-27 18:30:19,273 INFO L231 Difference]: Finished difference. Result has 176 places, 215 transitions, 2015 flow [2024-06-27 18:30:19,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2015, PETRI_PLACES=176, PETRI_TRANSITIONS=215} [2024-06-27 18:30:19,274 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 122 predicate places. [2024-06-27 18:30:19,274 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 215 transitions, 2015 flow [2024-06-27 18:30:19,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:19,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:19,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:19,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:30:19,275 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:19,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:19,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2037541879, now seen corresponding path program 5 times [2024-06-27 18:30:19,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:19,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393156998] [2024-06-27 18:30:19,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:19,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:20,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:20,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393156998] [2024-06-27 18:30:20,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393156998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:20,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:20,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:20,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312293299] [2024-06-27 18:30:20,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:20,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:20,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:20,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:20,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:20,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:30:20,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 215 transitions, 2015 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 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) [2024-06-27 18:30:20,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:20,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:30:20,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:22,428 INFO L124 PetriNetUnfolderBase]: 6651/10592 cut-off events. [2024-06-27 18:30:22,428 INFO L125 PetriNetUnfolderBase]: For 278625/278645 co-relation queries the response was YES. [2024-06-27 18:30:22,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59575 conditions, 10592 events. 6651/10592 cut-off events. For 278625/278645 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 69341 event pairs, 2150 based on Foata normal form. 4/10356 useless extension candidates. Maximal degree in co-relation 59498. Up to 9218 conditions per place. [2024-06-27 18:30:22,530 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 226 selfloop transitions, 33 changer transitions 0/272 dead transitions. [2024-06-27 18:30:22,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 272 transitions, 2810 flow [2024-06-27 18:30:22,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:30:22,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:30:22,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-27 18:30:22,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976851851851852 [2024-06-27 18:30:22,532 INFO L175 Difference]: Start difference. First operand has 176 places, 215 transitions, 2015 flow. Second operand 9 states and 215 transitions. [2024-06-27 18:30:22,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 272 transitions, 2810 flow [2024-06-27 18:30:22,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 272 transitions, 2765 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-27 18:30:22,785 INFO L231 Difference]: Finished difference. Result has 184 places, 221 transitions, 2166 flow [2024-06-27 18:30:22,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1970, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2166, PETRI_PLACES=184, PETRI_TRANSITIONS=221} [2024-06-27 18:30:22,786 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 130 predicate places. [2024-06-27 18:30:22,786 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 221 transitions, 2166 flow [2024-06-27 18:30:22,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 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) [2024-06-27 18:30:22,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:22,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:22,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:30:22,787 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:22,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:22,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1596865195, now seen corresponding path program 6 times [2024-06-27 18:30:22,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:22,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707287715] [2024-06-27 18:30:22,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:22,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:24,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:24,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:24,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707287715] [2024-06-27 18:30:24,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707287715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:24,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:24,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:24,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558644522] [2024-06-27 18:30:24,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:24,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:24,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:24,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:24,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:24,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:30:24,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 221 transitions, 2166 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 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) [2024-06-27 18:30:24,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:24,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:30:24,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:26,104 INFO L124 PetriNetUnfolderBase]: 6688/10666 cut-off events. [2024-06-27 18:30:26,104 INFO L125 PetriNetUnfolderBase]: For 299662/299674 co-relation queries the response was YES. [2024-06-27 18:30:26,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61492 conditions, 10666 events. 6688/10666 cut-off events. For 299662/299674 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 70051 event pairs, 2199 based on Foata normal form. 4/10426 useless extension candidates. Maximal degree in co-relation 61411. Up to 9416 conditions per place. [2024-06-27 18:30:26,207 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 236 selfloop transitions, 22 changer transitions 0/271 dead transitions. [2024-06-27 18:30:26,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 271 transitions, 2902 flow [2024-06-27 18:30:26,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:30:26,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:30:26,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-27 18:30:26,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-27 18:30:26,208 INFO L175 Difference]: Start difference. First operand has 184 places, 221 transitions, 2166 flow. Second operand 9 states and 210 transitions. [2024-06-27 18:30:26,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 271 transitions, 2902 flow [2024-06-27 18:30:26,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 271 transitions, 2763 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-27 18:30:26,577 INFO L231 Difference]: Finished difference. Result has 187 places, 223 transitions, 2152 flow [2024-06-27 18:30:26,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2027, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2152, PETRI_PLACES=187, PETRI_TRANSITIONS=223} [2024-06-27 18:30:26,577 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 133 predicate places. [2024-06-27 18:30:26,578 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 223 transitions, 2152 flow [2024-06-27 18:30:26,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 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) [2024-06-27 18:30:26,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:26,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:26,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:30:26,578 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:26,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:26,579 INFO L85 PathProgramCache]: Analyzing trace with hash -2031977689, now seen corresponding path program 7 times [2024-06-27 18:30:26,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:26,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726298824] [2024-06-27 18:30:26,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:26,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:27,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:27,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:27,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726298824] [2024-06-27 18:30:27,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726298824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:27,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:27,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:30:27,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473487640] [2024-06-27 18:30:27,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:27,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:30:27,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:27,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:30:27,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:30:27,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:30:27,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 223 transitions, 2152 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:27,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:27,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:30:27,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:29,655 INFO L124 PetriNetUnfolderBase]: 6725/10707 cut-off events. [2024-06-27 18:30:29,656 INFO L125 PetriNetUnfolderBase]: For 314243/314255 co-relation queries the response was YES. [2024-06-27 18:30:29,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62114 conditions, 10707 events. 6725/10707 cut-off events. For 314243/314255 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 70122 event pairs, 2158 based on Foata normal form. 4/10471 useless extension candidates. Maximal degree in co-relation 62032. Up to 9328 conditions per place. [2024-06-27 18:30:29,779 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 231 selfloop transitions, 34 changer transitions 0/278 dead transitions. [2024-06-27 18:30:29,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 278 transitions, 2948 flow [2024-06-27 18:30:29,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:30:29,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:30:29,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-27 18:30:29,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:30:29,780 INFO L175 Difference]: Start difference. First operand has 187 places, 223 transitions, 2152 flow. Second operand 9 states and 216 transitions. [2024-06-27 18:30:29,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 278 transitions, 2948 flow [2024-06-27 18:30:30,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 278 transitions, 2845 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 18:30:30,119 INFO L231 Difference]: Finished difference. Result has 190 places, 227 transitions, 2224 flow [2024-06-27 18:30:30,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2049, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2224, PETRI_PLACES=190, PETRI_TRANSITIONS=227} [2024-06-27 18:30:30,120 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 136 predicate places. [2024-06-27 18:30:30,120 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 227 transitions, 2224 flow [2024-06-27 18:30:30,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:30,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:30,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:30,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:30:30,120 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:30,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:30,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1891169275, now seen corresponding path program 8 times [2024-06-27 18:30:30,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:30,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004130745] [2024-06-27 18:30:30,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:30,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:31,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:31,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:31,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004130745] [2024-06-27 18:30:31,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004130745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:31,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:31,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:31,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901332596] [2024-06-27 18:30:31,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:31,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:31,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:31,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:31,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:31,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:30:31,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 227 transitions, 2224 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 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) [2024-06-27 18:30:31,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:31,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:30:31,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:33,006 INFO L124 PetriNetUnfolderBase]: 6762/10786 cut-off events. [2024-06-27 18:30:33,006 INFO L125 PetriNetUnfolderBase]: For 330337/330349 co-relation queries the response was YES. [2024-06-27 18:30:33,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63147 conditions, 10786 events. 6762/10786 cut-off events. For 330337/330349 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 70807 event pairs, 2128 based on Foata normal form. 4/10544 useless extension candidates. Maximal degree in co-relation 63064. Up to 9514 conditions per place. [2024-06-27 18:30:33,133 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 238 selfloop transitions, 24 changer transitions 0/275 dead transitions. [2024-06-27 18:30:33,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 275 transitions, 2956 flow [2024-06-27 18:30:33,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:30:33,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:30:33,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-27 18:30:33,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-27 18:30:33,134 INFO L175 Difference]: Start difference. First operand has 190 places, 227 transitions, 2224 flow. Second operand 9 states and 208 transitions. [2024-06-27 18:30:33,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 275 transitions, 2956 flow [2024-06-27 18:30:33,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 275 transitions, 2831 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-27 18:30:33,719 INFO L231 Difference]: Finished difference. Result has 194 places, 229 transitions, 2236 flow [2024-06-27 18:30:33,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2099, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2236, PETRI_PLACES=194, PETRI_TRANSITIONS=229} [2024-06-27 18:30:33,719 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 140 predicate places. [2024-06-27 18:30:33,720 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 229 transitions, 2236 flow [2024-06-27 18:30:33,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 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) [2024-06-27 18:30:33,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:33,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:33,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:30:33,720 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:33,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:33,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1348467309, now seen corresponding path program 9 times [2024-06-27 18:30:33,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:33,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309111452] [2024-06-27 18:30:33,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:33,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:34,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:34,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:34,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309111452] [2024-06-27 18:30:34,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309111452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:34,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:34,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:34,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543996173] [2024-06-27 18:30:34,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:34,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:34,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:34,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:34,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:35,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:30:35,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 229 transitions, 2236 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 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) [2024-06-27 18:30:35,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:35,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:30:35,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:36,879 INFO L124 PetriNetUnfolderBase]: 6799/10846 cut-off events. [2024-06-27 18:30:36,880 INFO L125 PetriNetUnfolderBase]: For 347026/347038 co-relation queries the response was YES. [2024-06-27 18:30:36,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63862 conditions, 10846 events. 6799/10846 cut-off events. For 347026/347038 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 71406 event pairs, 2187 based on Foata normal form. 4/10602 useless extension candidates. Maximal degree in co-relation 63778. Up to 9476 conditions per place. [2024-06-27 18:30:37,007 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 232 selfloop transitions, 38 changer transitions 0/283 dead transitions. [2024-06-27 18:30:37,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 283 transitions, 3018 flow [2024-06-27 18:30:37,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:30:37,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:30:37,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-27 18:30:37,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49537037037037035 [2024-06-27 18:30:37,013 INFO L175 Difference]: Start difference. First operand has 194 places, 229 transitions, 2236 flow. Second operand 9 states and 214 transitions. [2024-06-27 18:30:37,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 283 transitions, 3018 flow [2024-06-27 18:30:37,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 283 transitions, 2899 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-27 18:30:37,432 INFO L231 Difference]: Finished difference. Result has 196 places, 231 transitions, 2289 flow [2024-06-27 18:30:37,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2289, PETRI_PLACES=196, PETRI_TRANSITIONS=231} [2024-06-27 18:30:37,433 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 142 predicate places. [2024-06-27 18:30:37,433 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 231 transitions, 2289 flow [2024-06-27 18:30:37,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 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) [2024-06-27 18:30:37,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:37,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:37,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:30:37,434 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:37,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:37,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1596872635, now seen corresponding path program 10 times [2024-06-27 18:30:37,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:37,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605207134] [2024-06-27 18:30:37,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:37,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:38,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:38,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:38,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605207134] [2024-06-27 18:30:38,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605207134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:38,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:38,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:38,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064093751] [2024-06-27 18:30:38,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:38,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:38,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:38,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:38,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:38,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:30:38,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 231 transitions, 2289 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 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) [2024-06-27 18:30:38,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:38,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:30:38,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:40,493 INFO L124 PetriNetUnfolderBase]: 6836/10904 cut-off events. [2024-06-27 18:30:40,494 INFO L125 PetriNetUnfolderBase]: For 365025/365037 co-relation queries the response was YES. [2024-06-27 18:30:40,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64892 conditions, 10904 events. 6836/10904 cut-off events. For 365025/365037 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 71801 event pairs, 2231 based on Foata normal form. 4/10660 useless extension candidates. Maximal degree in co-relation 64807. Up to 9559 conditions per place. [2024-06-27 18:30:40,624 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 243 selfloop transitions, 25 changer transitions 0/281 dead transitions. [2024-06-27 18:30:40,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 281 transitions, 3059 flow [2024-06-27 18:30:40,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:30:40,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:30:40,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-27 18:30:40,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48842592592592593 [2024-06-27 18:30:40,626 INFO L175 Difference]: Start difference. First operand has 196 places, 231 transitions, 2289 flow. Second operand 9 states and 211 transitions. [2024-06-27 18:30:40,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 281 transitions, 3059 flow [2024-06-27 18:30:41,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 281 transitions, 2903 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-27 18:30:41,086 INFO L231 Difference]: Finished difference. Result has 198 places, 233 transitions, 2280 flow [2024-06-27 18:30:41,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2137, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2280, PETRI_PLACES=198, PETRI_TRANSITIONS=233} [2024-06-27 18:30:41,087 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 144 predicate places. [2024-06-27 18:30:41,087 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 233 transitions, 2280 flow [2024-06-27 18:30:41,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 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) [2024-06-27 18:30:41,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:41,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:41,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:30:41,087 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:41,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:41,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1730393021, now seen corresponding path program 11 times [2024-06-27 18:30:41,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:41,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242188116] [2024-06-27 18:30:41,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:41,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:42,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:42,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:42,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242188116] [2024-06-27 18:30:42,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242188116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:42,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:42,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:30:42,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423201187] [2024-06-27 18:30:42,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:42,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:30:42,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:42,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:30:42,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:30:42,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:30:42,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 233 transitions, 2280 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:42,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:42,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:30:42,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:44,046 INFO L124 PetriNetUnfolderBase]: 6873/10945 cut-off events. [2024-06-27 18:30:44,046 INFO L125 PetriNetUnfolderBase]: For 364456/364468 co-relation queries the response was YES. [2024-06-27 18:30:44,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65009 conditions, 10945 events. 6873/10945 cut-off events. For 364456/364468 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 71937 event pairs, 2213 based on Foata normal form. 4/10703 useless extension candidates. Maximal degree in co-relation 64923. Up to 9437 conditions per place. [2024-06-27 18:30:44,174 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 234 selfloop transitions, 39 changer transitions 0/286 dead transitions. [2024-06-27 18:30:44,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 286 transitions, 3080 flow [2024-06-27 18:30:44,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:30:44,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:30:44,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-27 18:30:44,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:30:44,176 INFO L175 Difference]: Start difference. First operand has 198 places, 233 transitions, 2280 flow. Second operand 9 states and 216 transitions. [2024-06-27 18:30:44,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 286 transitions, 3080 flow [2024-06-27 18:30:44,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 286 transitions, 2955 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-27 18:30:44,609 INFO L231 Difference]: Finished difference. Result has 200 places, 235 transitions, 2330 flow [2024-06-27 18:30:44,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2155, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2330, PETRI_PLACES=200, PETRI_TRANSITIONS=235} [2024-06-27 18:30:44,610 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 146 predicate places. [2024-06-27 18:30:44,610 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 235 transitions, 2330 flow [2024-06-27 18:30:44,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:44,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:44,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:44,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:30:44,610 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:44,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:44,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1348474749, now seen corresponding path program 12 times [2024-06-27 18:30:44,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:44,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996329614] [2024-06-27 18:30:44,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:44,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:44,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:45,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:45,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:45,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996329614] [2024-06-27 18:30:45,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996329614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:45,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:45,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:45,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783768395] [2024-06-27 18:30:45,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:45,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:45,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:45,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:45,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:45,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:30:45,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 235 transitions, 2330 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 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) [2024-06-27 18:30:45,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:45,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:30:45,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:47,782 INFO L124 PetriNetUnfolderBase]: 6873/10952 cut-off events. [2024-06-27 18:30:47,783 INFO L125 PetriNetUnfolderBase]: For 375148/375160 co-relation queries the response was YES. [2024-06-27 18:30:47,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65210 conditions, 10952 events. 6873/10952 cut-off events. For 375148/375160 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 72089 event pairs, 2180 based on Foata normal form. 4/10709 useless extension candidates. Maximal degree in co-relation 65123. Up to 9432 conditions per place. [2024-06-27 18:30:47,912 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 232 selfloop transitions, 44 changer transitions 0/289 dead transitions. [2024-06-27 18:30:47,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 289 transitions, 3130 flow [2024-06-27 18:30:47,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:30:47,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:30:47,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-27 18:30:47,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976851851851852 [2024-06-27 18:30:47,913 INFO L175 Difference]: Start difference. First operand has 200 places, 235 transitions, 2330 flow. Second operand 9 states and 215 transitions. [2024-06-27 18:30:47,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 289 transitions, 3130 flow [2024-06-27 18:30:48,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 289 transitions, 2973 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-27 18:30:48,297 INFO L231 Difference]: Finished difference. Result has 202 places, 237 transitions, 2365 flow [2024-06-27 18:30:48,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2173, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2365, PETRI_PLACES=202, PETRI_TRANSITIONS=237} [2024-06-27 18:30:48,297 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 148 predicate places. [2024-06-27 18:30:48,297 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 237 transitions, 2365 flow [2024-06-27 18:30:48,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 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) [2024-06-27 18:30:48,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:48,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:48,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:30:48,298 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:48,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:48,298 INFO L85 PathProgramCache]: Analyzing trace with hash 2127380241, now seen corresponding path program 2 times [2024-06-27 18:30:48,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:48,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390892804] [2024-06-27 18:30:48,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:48,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:49,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:49,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:49,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390892804] [2024-06-27 18:30:49,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390892804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:49,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:49,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:30:49,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604616335] [2024-06-27 18:30:49,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:49,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:30:49,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:49,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:30:49,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:30:49,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:30:49,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 237 transitions, 2365 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:49,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:49,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:30:49,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:50,755 INFO L124 PetriNetUnfolderBase]: 6699/10703 cut-off events. [2024-06-27 18:30:50,755 INFO L125 PetriNetUnfolderBase]: For 381698/381827 co-relation queries the response was YES. [2024-06-27 18:30:50,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62710 conditions, 10703 events. 6699/10703 cut-off events. For 381698/381827 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 70638 event pairs, 2277 based on Foata normal form. 79/10455 useless extension candidates. Maximal degree in co-relation 62622. Up to 9559 conditions per place. [2024-06-27 18:30:50,861 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 217 selfloop transitions, 22 changer transitions 0/263 dead transitions. [2024-06-27 18:30:50,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 263 transitions, 3053 flow [2024-06-27 18:30:50,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:30:50,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:30:50,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-27 18:30:50,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-27 18:30:50,862 INFO L175 Difference]: Start difference. First operand has 202 places, 237 transitions, 2365 flow. Second operand 7 states and 156 transitions. [2024-06-27 18:30:50,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 263 transitions, 3053 flow [2024-06-27 18:30:51,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 263 transitions, 2879 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 18:30:51,308 INFO L231 Difference]: Finished difference. Result has 202 places, 240 transitions, 2289 flow [2024-06-27 18:30:51,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2193, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2289, PETRI_PLACES=202, PETRI_TRANSITIONS=240} [2024-06-27 18:30:51,309 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 148 predicate places. [2024-06-27 18:30:51,309 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 240 transitions, 2289 flow [2024-06-27 18:30:51,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:51,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:51,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:51,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:30:51,310 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:51,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:51,310 INFO L85 PathProgramCache]: Analyzing trace with hash -451177393, now seen corresponding path program 3 times [2024-06-27 18:30:51,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:51,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072881497] [2024-06-27 18:30:51,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:51,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:52,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:52,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:52,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072881497] [2024-06-27 18:30:52,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072881497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:52,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:52,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:30:52,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098917139] [2024-06-27 18:30:52,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:52,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:30:52,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:52,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:30:52,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:30:52,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:30:52,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 240 transitions, 2289 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:52,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:52,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:30:52,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:53,824 INFO L124 PetriNetUnfolderBase]: 6693/10699 cut-off events. [2024-06-27 18:30:53,824 INFO L125 PetriNetUnfolderBase]: For 365037/365158 co-relation queries the response was YES. [2024-06-27 18:30:53,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61427 conditions, 10699 events. 6693/10699 cut-off events. For 365037/365158 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 70730 event pairs, 2278 based on Foata normal form. 80/10451 useless extension candidates. Maximal degree in co-relation 61338. Up to 9574 conditions per place. [2024-06-27 18:30:53,965 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 219 selfloop transitions, 17 changer transitions 0/260 dead transitions. [2024-06-27 18:30:53,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 260 transitions, 2817 flow [2024-06-27 18:30:53,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:30:53,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:30:53,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-06-27 18:30:53,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-27 18:30:53,966 INFO L175 Difference]: Start difference. First operand has 202 places, 240 transitions, 2289 flow. Second operand 7 states and 152 transitions. [2024-06-27 18:30:53,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 260 transitions, 2817 flow [2024-06-27 18:30:54,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 260 transitions, 2698 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-27 18:30:54,428 INFO L231 Difference]: Finished difference. Result has 204 places, 240 transitions, 2210 flow [2024-06-27 18:30:54,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2170, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2210, PETRI_PLACES=204, PETRI_TRANSITIONS=240} [2024-06-27 18:30:54,429 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 150 predicate places. [2024-06-27 18:30:54,429 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 240 transitions, 2210 flow [2024-06-27 18:30:54,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:54,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:54,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:54,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:30:54,430 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:54,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:54,430 INFO L85 PathProgramCache]: Analyzing trace with hash 918647614, now seen corresponding path program 1 times [2024-06-27 18:30:54,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:54,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645797252] [2024-06-27 18:30:54,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:54,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:55,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:55,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:55,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645797252] [2024-06-27 18:30:55,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645797252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:55,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:55,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:30:55,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585544804] [2024-06-27 18:30:55,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:55,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:30:55,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:55,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:30:55,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:30:55,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:30:55,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 240 transitions, 2210 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:55,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:55,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:30:55,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:56,961 INFO L124 PetriNetUnfolderBase]: 6927/11098 cut-off events. [2024-06-27 18:30:56,961 INFO L125 PetriNetUnfolderBase]: For 380956/380968 co-relation queries the response was YES. [2024-06-27 18:30:57,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64641 conditions, 11098 events. 6927/11098 cut-off events. For 380956/380968 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 73698 event pairs, 2227 based on Foata normal form. 2/10835 useless extension candidates. Maximal degree in co-relation 64552. Up to 9819 conditions per place. [2024-06-27 18:30:57,096 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 235 selfloop transitions, 25 changer transitions 0/274 dead transitions. [2024-06-27 18:30:57,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 274 transitions, 2854 flow [2024-06-27 18:30:57,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:30:57,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:30:57,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 18:30:57,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-27 18:30:57,098 INFO L175 Difference]: Start difference. First operand has 204 places, 240 transitions, 2210 flow. Second operand 7 states and 163 transitions. [2024-06-27 18:30:57,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 274 transitions, 2854 flow [2024-06-27 18:30:57,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 274 transitions, 2807 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 18:30:57,581 INFO L231 Difference]: Finished difference. Result has 205 places, 243 transitions, 2265 flow [2024-06-27 18:30:57,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2163, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2265, PETRI_PLACES=205, PETRI_TRANSITIONS=243} [2024-06-27 18:30:57,581 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 151 predicate places. [2024-06-27 18:30:57,581 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 243 transitions, 2265 flow [2024-06-27 18:30:57,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:57,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:57,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:57,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:30:57,582 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:57,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:57,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1950463024, now seen corresponding path program 1 times [2024-06-27 18:30:57,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:57,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008366854] [2024-06-27 18:30:57,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:57,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:58,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:58,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:58,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008366854] [2024-06-27 18:30:58,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008366854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:58,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:58,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:30:58,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366756026] [2024-06-27 18:30:58,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:58,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:30:58,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:58,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:30:58,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:30:58,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:30:58,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 243 transitions, 2265 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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) [2024-06-27 18:30:58,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:58,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:30:58,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:00,142 INFO L124 PetriNetUnfolderBase]: 7298/11357 cut-off events. [2024-06-27 18:31:00,142 INFO L125 PetriNetUnfolderBase]: For 395176/395176 co-relation queries the response was YES. [2024-06-27 18:31:00,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67538 conditions, 11357 events. 7298/11357 cut-off events. For 395176/395176 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 72532 event pairs, 2410 based on Foata normal form. 1/11144 useless extension candidates. Maximal degree in co-relation 67448. Up to 10409 conditions per place. [2024-06-27 18:31:00,272 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 237 selfloop transitions, 33 changer transitions 0/278 dead transitions. [2024-06-27 18:31:00,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 278 transitions, 3075 flow [2024-06-27 18:31:00,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:31:00,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:31:00,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-27 18:31:00,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-27 18:31:00,274 INFO L175 Difference]: Start difference. First operand has 205 places, 243 transitions, 2265 flow. Second operand 7 states and 157 transitions. [2024-06-27 18:31:00,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 278 transitions, 3075 flow [2024-06-27 18:31:00,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 278 transitions, 2999 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 18:31:00,858 INFO L231 Difference]: Finished difference. Result has 207 places, 249 transitions, 2343 flow [2024-06-27 18:31:00,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2189, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2343, PETRI_PLACES=207, PETRI_TRANSITIONS=249} [2024-06-27 18:31:00,859 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 153 predicate places. [2024-06-27 18:31:00,859 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 249 transitions, 2343 flow [2024-06-27 18:31:00,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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) [2024-06-27 18:31:00,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:00,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:00,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:31:00,860 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:31:00,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:00,861 INFO L85 PathProgramCache]: Analyzing trace with hash 918767584, now seen corresponding path program 2 times [2024-06-27 18:31:00,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:00,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538921911] [2024-06-27 18:31:00,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:00,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:01,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:01,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:01,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538921911] [2024-06-27 18:31:01,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538921911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:01,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:01,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:31:01,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165031837] [2024-06-27 18:31:01,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:01,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:31:01,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:01,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:31:01,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:31:01,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:31:01,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 249 transitions, 2343 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:01,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:01,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:31:01,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:03,530 INFO L124 PetriNetUnfolderBase]: 7012/11212 cut-off events. [2024-06-27 18:31:03,530 INFO L125 PetriNetUnfolderBase]: For 414334/414352 co-relation queries the response was YES. [2024-06-27 18:31:03,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67549 conditions, 11212 events. 7012/11212 cut-off events. For 414334/414352 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 74353 event pairs, 2246 based on Foata normal form. 2/10926 useless extension candidates. Maximal degree in co-relation 67458. Up to 9838 conditions per place. [2024-06-27 18:31:03,636 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 233 selfloop transitions, 38 changer transitions 0/287 dead transitions. [2024-06-27 18:31:03,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 287 transitions, 3185 flow [2024-06-27 18:31:03,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:31:03,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:31:03,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-27 18:31:03,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-06-27 18:31:03,637 INFO L175 Difference]: Start difference. First operand has 207 places, 249 transitions, 2343 flow. Second operand 7 states and 166 transitions. [2024-06-27 18:31:03,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 287 transitions, 3185 flow [2024-06-27 18:31:04,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 287 transitions, 3119 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-27 18:31:04,089 INFO L231 Difference]: Finished difference. Result has 211 places, 255 transitions, 2457 flow [2024-06-27 18:31:04,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2277, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2457, PETRI_PLACES=211, PETRI_TRANSITIONS=255} [2024-06-27 18:31:04,090 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 157 predicate places. [2024-06-27 18:31:04,090 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 255 transitions, 2457 flow [2024-06-27 18:31:04,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:04,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:04,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:04,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:31:04,091 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:31:04,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:04,092 INFO L85 PathProgramCache]: Analyzing trace with hash 47530860, now seen corresponding path program 2 times [2024-06-27 18:31:04,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:04,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351818] [2024-06-27 18:31:04,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:04,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:04,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:04,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:04,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351818] [2024-06-27 18:31:04,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:04,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:04,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:31:04,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265597140] [2024-06-27 18:31:04,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:04,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:31:04,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:04,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:31:04,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:31:04,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:31:04,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 255 transitions, 2457 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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) [2024-06-27 18:31:04,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:04,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:31:04,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:06,640 INFO L124 PetriNetUnfolderBase]: 7349/11435 cut-off events. [2024-06-27 18:31:06,640 INFO L125 PetriNetUnfolderBase]: For 430161/430163 co-relation queries the response was YES. [2024-06-27 18:31:06,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70197 conditions, 11435 events. 7349/11435 cut-off events. For 430161/430163 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 73067 event pairs, 2436 based on Foata normal form. 3/11223 useless extension candidates. Maximal degree in co-relation 70104. Up to 10473 conditions per place. [2024-06-27 18:31:06,787 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 239 selfloop transitions, 37 changer transitions 0/284 dead transitions. [2024-06-27 18:31:06,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 284 transitions, 3231 flow [2024-06-27 18:31:06,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:31:06,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:31:06,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-27 18:31:06,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-27 18:31:06,788 INFO L175 Difference]: Start difference. First operand has 211 places, 255 transitions, 2457 flow. Second operand 7 states and 153 transitions. [2024-06-27 18:31:06,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 284 transitions, 3231 flow [2024-06-27 18:31:07,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 284 transitions, 3163 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-27 18:31:07,371 INFO L231 Difference]: Finished difference. Result has 215 places, 258 transitions, 2502 flow [2024-06-27 18:31:07,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2389, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2502, PETRI_PLACES=215, PETRI_TRANSITIONS=258} [2024-06-27 18:31:07,372 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 161 predicate places. [2024-06-27 18:31:07,372 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 258 transitions, 2502 flow [2024-06-27 18:31:07,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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) [2024-06-27 18:31:07,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:07,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:07,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:31:07,372 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:31:07,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:07,373 INFO L85 PathProgramCache]: Analyzing trace with hash -451407630, now seen corresponding path program 3 times [2024-06-27 18:31:07,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:07,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897330268] [2024-06-27 18:31:07,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:07,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:08,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:08,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:08,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897330268] [2024-06-27 18:31:08,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897330268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:08,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:08,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:31:08,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440458585] [2024-06-27 18:31:08,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:08,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:31:08,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:08,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:31:08,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:31:08,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:31:08,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 258 transitions, 2502 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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) [2024-06-27 18:31:08,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:08,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:31:08,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:10,049 INFO L124 PetriNetUnfolderBase]: 7346/11435 cut-off events. [2024-06-27 18:31:10,049 INFO L125 PetriNetUnfolderBase]: For 440380/440382 co-relation queries the response was YES. [2024-06-27 18:31:10,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70323 conditions, 11435 events. 7346/11435 cut-off events. For 440380/440382 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 73102 event pairs, 2438 based on Foata normal form. 3/11222 useless extension candidates. Maximal degree in co-relation 70228. Up to 10470 conditions per place. [2024-06-27 18:31:10,199 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 239 selfloop transitions, 36 changer transitions 0/283 dead transitions. [2024-06-27 18:31:10,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 283 transitions, 3142 flow [2024-06-27 18:31:10,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:31:10,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:31:10,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-27 18:31:10,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-27 18:31:10,201 INFO L175 Difference]: Start difference. First operand has 215 places, 258 transitions, 2502 flow. Second operand 7 states and 153 transitions. [2024-06-27 18:31:10,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 283 transitions, 3142 flow [2024-06-27 18:31:10,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 283 transitions, 3049 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-27 18:31:10,847 INFO L231 Difference]: Finished difference. Result has 218 places, 258 transitions, 2487 flow [2024-06-27 18:31:10,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2409, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2487, PETRI_PLACES=218, PETRI_TRANSITIONS=258} [2024-06-27 18:31:10,847 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 164 predicate places. [2024-06-27 18:31:10,848 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 258 transitions, 2487 flow [2024-06-27 18:31:10,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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) [2024-06-27 18:31:10,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:10,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:10,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:31:10,848 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:31:10,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:10,848 INFO L85 PathProgramCache]: Analyzing trace with hash -451407816, now seen corresponding path program 3 times [2024-06-27 18:31:10,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:10,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814713696] [2024-06-27 18:31:10,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:10,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:11,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:11,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:11,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814713696] [2024-06-27 18:31:11,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814713696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:11,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:11,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:31:11,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732091611] [2024-06-27 18:31:11,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:11,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:31:11,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:11,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:31:11,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:31:11,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:31:11,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 258 transitions, 2487 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:11,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:11,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:31:11,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:13,504 INFO L124 PetriNetUnfolderBase]: 7018/11219 cut-off events. [2024-06-27 18:31:13,505 INFO L125 PetriNetUnfolderBase]: For 452148/452164 co-relation queries the response was YES. [2024-06-27 18:31:13,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68955 conditions, 11219 events. 7018/11219 cut-off events. For 452148/452164 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 74402 event pairs, 2282 based on Foata normal form. 2/10935 useless extension candidates. Maximal degree in co-relation 68859. Up to 9847 conditions per place. [2024-06-27 18:31:13,634 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 231 selfloop transitions, 38 changer transitions 0/286 dead transitions. [2024-06-27 18:31:13,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 286 transitions, 3127 flow [2024-06-27 18:31:13,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:31:13,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:31:13,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-27 18:31:13,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-27 18:31:13,636 INFO L175 Difference]: Start difference. First operand has 218 places, 258 transitions, 2487 flow. Second operand 7 states and 162 transitions. [2024-06-27 18:31:13,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 286 transitions, 3127 flow [2024-06-27 18:31:14,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 286 transitions, 3001 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 18:31:14,206 INFO L231 Difference]: Finished difference. Result has 218 places, 258 transitions, 2443 flow [2024-06-27 18:31:14,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2361, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2443, PETRI_PLACES=218, PETRI_TRANSITIONS=258} [2024-06-27 18:31:14,207 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 164 predicate places. [2024-06-27 18:31:14,207 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 258 transitions, 2443 flow [2024-06-27 18:31:14,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:14,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:14,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:14,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:31:14,207 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:31:14,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:14,208 INFO L85 PathProgramCache]: Analyzing trace with hash 760665123, now seen corresponding path program 1 times [2024-06-27 18:31:14,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:14,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412107963] [2024-06-27 18:31:14,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:14,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:15,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:15,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:15,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412107963] [2024-06-27 18:31:15,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412107963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:15,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:15,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:15,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204184583] [2024-06-27 18:31:15,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:15,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:15,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:15,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:15,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:16,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:31:16,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 258 transitions, 2443 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:16,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:16,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:31:16,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:18,248 INFO L124 PetriNetUnfolderBase]: 7050/10729 cut-off events. [2024-06-27 18:31:18,248 INFO L125 PetriNetUnfolderBase]: For 482857/482905 co-relation queries the response was YES. [2024-06-27 18:31:18,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69651 conditions, 10729 events. 7050/10729 cut-off events. For 482857/482905 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 66207 event pairs, 1751 based on Foata normal form. 12/10611 useless extension candidates. Maximal degree in co-relation 69554. Up to 9782 conditions per place. [2024-06-27 18:31:18,354 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 279 selfloop transitions, 37 changer transitions 0/333 dead transitions. [2024-06-27 18:31:18,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 333 transitions, 3503 flow [2024-06-27 18:31:18,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:31:18,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:31:18,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 242 transitions. [2024-06-27 18:31:18,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041666666666667 [2024-06-27 18:31:18,356 INFO L175 Difference]: Start difference. First operand has 218 places, 258 transitions, 2443 flow. Second operand 10 states and 242 transitions. [2024-06-27 18:31:18,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 333 transitions, 3503 flow [2024-06-27 18:31:18,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 333 transitions, 3396 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 18:31:18,927 INFO L231 Difference]: Finished difference. Result has 224 places, 264 transitions, 2625 flow [2024-06-27 18:31:18,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2336, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2625, PETRI_PLACES=224, PETRI_TRANSITIONS=264} [2024-06-27 18:31:18,928 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 170 predicate places. [2024-06-27 18:31:18,928 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 264 transitions, 2625 flow [2024-06-27 18:31:18,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:18,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:18,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:18,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:31:18,928 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:31:18,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:18,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1514318349, now seen corresponding path program 1 times [2024-06-27 18:31:18,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:18,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862857054] [2024-06-27 18:31:18,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:18,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:19,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:19,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:19,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862857054] [2024-06-27 18:31:19,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862857054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:19,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:19,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:31:19,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672049244] [2024-06-27 18:31:19,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:19,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:31:19,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:19,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:31:19,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:31:20,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:31:20,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 264 transitions, 2625 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-27 18:31:20,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:20,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:31:20,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:21,703 INFO L124 PetriNetUnfolderBase]: 7072/10762 cut-off events. [2024-06-27 18:31:21,703 INFO L125 PetriNetUnfolderBase]: For 496238/496254 co-relation queries the response was YES. [2024-06-27 18:31:21,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70939 conditions, 10762 events. 7072/10762 cut-off events. For 496238/496254 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 66236 event pairs, 1726 based on Foata normal form. 1/10655 useless extension candidates. Maximal degree in co-relation 70839. Up to 9914 conditions per place. [2024-06-27 18:31:21,862 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 267 selfloop transitions, 45 changer transitions 0/329 dead transitions. [2024-06-27 18:31:21,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 329 transitions, 3745 flow [2024-06-27 18:31:21,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:31:21,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:31:21,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 18:31:21,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-06-27 18:31:21,863 INFO L175 Difference]: Start difference. First operand has 224 places, 264 transitions, 2625 flow. Second operand 8 states and 198 transitions. [2024-06-27 18:31:21,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 329 transitions, 3745 flow [2024-06-27 18:31:22,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 329 transitions, 3560 flow, removed 74 selfloop flow, removed 5 redundant places. [2024-06-27 18:31:22,643 INFO L231 Difference]: Finished difference. Result has 229 places, 280 transitions, 2805 flow [2024-06-27 18:31:22,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2440, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2805, PETRI_PLACES=229, PETRI_TRANSITIONS=280} [2024-06-27 18:31:22,644 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 175 predicate places. [2024-06-27 18:31:22,644 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 280 transitions, 2805 flow [2024-06-27 18:31:22,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-27 18:31:22,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:22,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:22,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:31:22,645 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:31:22,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:22,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1754849211, now seen corresponding path program 2 times [2024-06-27 18:31:22,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:22,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871584341] [2024-06-27 18:31:22,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:22,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:23,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:23,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:23,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871584341] [2024-06-27 18:31:23,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871584341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:23,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:23,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:31:23,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752711024] [2024-06-27 18:31:23,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:23,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:31:23,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:23,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:31:23,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:31:23,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:31:23,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 280 transitions, 2805 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-27 18:31:23,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:23,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:31:23,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:25,665 INFO L124 PetriNetUnfolderBase]: 7111/10815 cut-off events. [2024-06-27 18:31:25,665 INFO L125 PetriNetUnfolderBase]: For 501991/502007 co-relation queries the response was YES. [2024-06-27 18:31:25,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71768 conditions, 10815 events. 7111/10815 cut-off events. For 501991/502007 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 66597 event pairs, 1726 based on Foata normal form. 1/10708 useless extension candidates. Maximal degree in co-relation 71664. Up to 10004 conditions per place. [2024-06-27 18:31:25,814 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 267 selfloop transitions, 47 changer transitions 0/331 dead transitions. [2024-06-27 18:31:25,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 331 transitions, 3728 flow [2024-06-27 18:31:25,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:31:25,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:31:25,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 18:31:25,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-06-27 18:31:25,815 INFO L175 Difference]: Start difference. First operand has 229 places, 280 transitions, 2805 flow. Second operand 8 states and 190 transitions. [2024-06-27 18:31:25,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 331 transitions, 3728 flow [2024-06-27 18:31:26,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 331 transitions, 3541 flow, removed 87 selfloop flow, removed 2 redundant places. [2024-06-27 18:31:26,706 INFO L231 Difference]: Finished difference. Result has 235 places, 289 transitions, 2876 flow [2024-06-27 18:31:26,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2670, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2876, PETRI_PLACES=235, PETRI_TRANSITIONS=289} [2024-06-27 18:31:26,706 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 181 predicate places. [2024-06-27 18:31:26,707 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 289 transitions, 2876 flow [2024-06-27 18:31:26,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-27 18:31:26,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:26,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:26,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:31:26,708 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:31:26,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:26,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1234901491, now seen corresponding path program 1 times [2024-06-27 18:31:26,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:26,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390958330] [2024-06-27 18:31:26,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:26,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:27,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:27,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:27,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390958330] [2024-06-27 18:31:27,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390958330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:27,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:27,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:31:27,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182339599] [2024-06-27 18:31:27,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:27,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:31:27,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:27,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:31:27,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:31:27,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:31:27,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 289 transitions, 2876 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:27,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:27,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:31:27,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:29,378 INFO L124 PetriNetUnfolderBase]: 7159/11226 cut-off events. [2024-06-27 18:31:29,378 INFO L125 PetriNetUnfolderBase]: For 515788/515808 co-relation queries the response was YES. [2024-06-27 18:31:29,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72576 conditions, 11226 events. 7159/11226 cut-off events. For 515788/515808 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 72756 event pairs, 1995 based on Foata normal form. 3/10995 useless extension candidates. Maximal degree in co-relation 72470. Up to 10057 conditions per place. [2024-06-27 18:31:29,520 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 286 selfloop transitions, 38 changer transitions 0/341 dead transitions. [2024-06-27 18:31:29,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 341 transitions, 4082 flow [2024-06-27 18:31:29,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:31:29,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:31:29,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 18:31:29,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-06-27 18:31:29,521 INFO L175 Difference]: Start difference. First operand has 235 places, 289 transitions, 2876 flow. Second operand 7 states and 170 transitions. [2024-06-27 18:31:29,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 341 transitions, 4082 flow [2024-06-27 18:31:30,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 341 transitions, 3961 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 18:31:30,118 INFO L231 Difference]: Finished difference. Result has 239 places, 306 transitions, 3114 flow [2024-06-27 18:31:30,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2757, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3114, PETRI_PLACES=239, PETRI_TRANSITIONS=306} [2024-06-27 18:31:30,118 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 185 predicate places. [2024-06-27 18:31:30,118 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 306 transitions, 3114 flow [2024-06-27 18:31:30,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:30,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:30,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:30,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:31:30,119 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:31:30,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:30,119 INFO L85 PathProgramCache]: Analyzing trace with hash 95590261, now seen corresponding path program 2 times [2024-06-27 18:31:30,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:30,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737193475] [2024-06-27 18:31:30,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:30,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:30,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:30,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:30,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737193475] [2024-06-27 18:31:30,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737193475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:30,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:30,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:31:30,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455027099] [2024-06-27 18:31:30,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:30,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:31:30,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:30,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:31:30,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:31:30,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:31:30,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 306 transitions, 3114 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:30,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:30,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:31:30,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:33,072 INFO L124 PetriNetUnfolderBase]: 7191/11275 cut-off events. [2024-06-27 18:31:33,072 INFO L125 PetriNetUnfolderBase]: For 540894/540914 co-relation queries the response was YES. [2024-06-27 18:31:33,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74698 conditions, 11275 events. 7191/11275 cut-off events. For 540894/540914 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 73103 event pairs, 1995 based on Foata normal form. 3/11043 useless extension candidates. Maximal degree in co-relation 74589. Up to 10096 conditions per place. [2024-06-27 18:31:33,196 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 283 selfloop transitions, 45 changer transitions 0/345 dead transitions. [2024-06-27 18:31:33,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 345 transitions, 4236 flow [2024-06-27 18:31:33,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:31:33,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:31:33,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 18:31:33,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-27 18:31:33,197 INFO L175 Difference]: Start difference. First operand has 239 places, 306 transitions, 3114 flow. Second operand 7 states and 167 transitions. [2024-06-27 18:31:33,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 345 transitions, 4236 flow [2024-06-27 18:31:33,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 345 transitions, 4100 flow, removed 67 selfloop flow, removed 1 redundant places. [2024-06-27 18:31:33,927 INFO L231 Difference]: Finished difference. Result has 245 places, 313 transitions, 3202 flow [2024-06-27 18:31:33,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3020, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3202, PETRI_PLACES=245, PETRI_TRANSITIONS=313} [2024-06-27 18:31:33,928 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 191 predicate places. [2024-06-27 18:31:33,928 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 313 transitions, 3202 flow [2024-06-27 18:31:33,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:33,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:33,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:33,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:31:33,929 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:31:33,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:33,929 INFO L85 PathProgramCache]: Analyzing trace with hash 940956761, now seen corresponding path program 2 times [2024-06-27 18:31:33,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:33,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907445818] [2024-06-27 18:31:33,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:33,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:35,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:35,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:35,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907445818] [2024-06-27 18:31:35,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907445818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:35,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:35,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:35,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495517461] [2024-06-27 18:31:35,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:35,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:35,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:35,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:35,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:35,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:31:35,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 313 transitions, 3202 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:35,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:35,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:31:35,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:37,844 INFO L124 PetriNetUnfolderBase]: 7297/10974 cut-off events. [2024-06-27 18:31:37,845 INFO L125 PetriNetUnfolderBase]: For 578302/578320 co-relation queries the response was YES. [2024-06-27 18:31:37,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75583 conditions, 10974 events. 7297/10974 cut-off events. For 578302/578320 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 66566 event pairs, 1512 based on Foata normal form. 12/10907 useless extension candidates. Maximal degree in co-relation 75471. Up to 9633 conditions per place. [2024-06-27 18:31:38,299 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 282 selfloop transitions, 93 changer transitions 0/392 dead transitions. [2024-06-27 18:31:38,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 392 transitions, 4437 flow [2024-06-27 18:31:38,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:31:38,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:31:38,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-06-27 18:31:38,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5229166666666667 [2024-06-27 18:31:38,301 INFO L175 Difference]: Start difference. First operand has 245 places, 313 transitions, 3202 flow. Second operand 10 states and 251 transitions. [2024-06-27 18:31:38,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 392 transitions, 4437 flow [2024-06-27 18:31:39,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 392 transitions, 4354 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-27 18:31:39,109 INFO L231 Difference]: Finished difference. Result has 254 places, 320 transitions, 3528 flow [2024-06-27 18:31:39,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3119, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3528, PETRI_PLACES=254, PETRI_TRANSITIONS=320} [2024-06-27 18:31:39,109 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 200 predicate places. [2024-06-27 18:31:39,109 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 320 transitions, 3528 flow [2024-06-27 18:31:39,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:39,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:39,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:39,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:31:39,110 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:31:39,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:39,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1113446651, now seen corresponding path program 3 times [2024-06-27 18:31:39,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:39,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711234189] [2024-06-27 18:31:39,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:39,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:40,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:40,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:40,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711234189] [2024-06-27 18:31:40,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711234189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:40,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:40,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:40,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454966860] [2024-06-27 18:31:40,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:40,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:40,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:40,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:40,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:41,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:31:41,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 320 transitions, 3528 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:41,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:41,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:31:41,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:43,739 INFO L124 PetriNetUnfolderBase]: 7703/11582 cut-off events. [2024-06-27 18:31:43,739 INFO L125 PetriNetUnfolderBase]: For 625525/625543 co-relation queries the response was YES. [2024-06-27 18:31:43,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80952 conditions, 11582 events. 7703/11582 cut-off events. For 625525/625543 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 70793 event pairs, 1557 based on Foata normal form. 12/11515 useless extension candidates. Maximal degree in co-relation 80837. Up to 9876 conditions per place. [2024-06-27 18:31:43,920 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 304 selfloop transitions, 109 changer transitions 0/430 dead transitions. [2024-06-27 18:31:43,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 430 transitions, 5036 flow [2024-06-27 18:31:43,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:31:43,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:31:43,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 301 transitions. [2024-06-27 18:31:43,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225694444444444 [2024-06-27 18:31:43,921 INFO L175 Difference]: Start difference. First operand has 254 places, 320 transitions, 3528 flow. Second operand 12 states and 301 transitions. [2024-06-27 18:31:43,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 430 transitions, 5036 flow [2024-06-27 18:31:45,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 430 transitions, 4770 flow, removed 80 selfloop flow, removed 5 redundant places. [2024-06-27 18:31:45,344 INFO L231 Difference]: Finished difference. Result has 265 places, 338 transitions, 3872 flow [2024-06-27 18:31:45,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3271, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3872, PETRI_PLACES=265, PETRI_TRANSITIONS=338} [2024-06-27 18:31:45,345 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 211 predicate places. [2024-06-27 18:31:45,345 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 338 transitions, 3872 flow [2024-06-27 18:31:45,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:45,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:45,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:45,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:31:45,346 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:31:45,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:45,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1113677291, now seen corresponding path program 4 times [2024-06-27 18:31:45,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:45,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952742121] [2024-06-27 18:31:45,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:45,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:46,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:46,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:46,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952742121] [2024-06-27 18:31:46,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952742121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:46,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:46,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:46,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533227416] [2024-06-27 18:31:46,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:46,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:46,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:46,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:46,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:47,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:31:47,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 338 transitions, 3872 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:47,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:47,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:31:47,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:49,479 INFO L124 PetriNetUnfolderBase]: 7812/11753 cut-off events. [2024-06-27 18:31:49,479 INFO L125 PetriNetUnfolderBase]: For 653792/653810 co-relation queries the response was YES. [2024-06-27 18:31:49,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83774 conditions, 11753 events. 7812/11753 cut-off events. For 653792/653810 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 72308 event pairs, 1565 based on Foata normal form. 12/11686 useless extension candidates. Maximal degree in co-relation 83653. Up to 10241 conditions per place. [2024-06-27 18:31:49,663 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 283 selfloop transitions, 113 changer transitions 0/413 dead transitions. [2024-06-27 18:31:49,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 413 transitions, 5192 flow [2024-06-27 18:31:49,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:31:49,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:31:49,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 249 transitions. [2024-06-27 18:31:49,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51875 [2024-06-27 18:31:49,665 INFO L175 Difference]: Start difference. First operand has 265 places, 338 transitions, 3872 flow. Second operand 10 states and 249 transitions. [2024-06-27 18:31:49,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 413 transitions, 5192 flow [2024-06-27 18:31:51,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 413 transitions, 4988 flow, removed 71 selfloop flow, removed 3 redundant places. [2024-06-27 18:31:51,174 INFO L231 Difference]: Finished difference. Result has 274 places, 343 transitions, 4193 flow [2024-06-27 18:31:51,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3670, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4193, PETRI_PLACES=274, PETRI_TRANSITIONS=343} [2024-06-27 18:31:51,174 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 220 predicate places. [2024-06-27 18:31:51,175 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 343 transitions, 4193 flow [2024-06-27 18:31:51,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:51,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:51,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:51,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:31:51,176 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:31:51,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:51,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1229191539, now seen corresponding path program 3 times [2024-06-27 18:31:51,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:51,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821371742] [2024-06-27 18:31:51,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:51,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:52,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:52,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:52,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821371742] [2024-06-27 18:31:52,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821371742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:52,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:52,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:31:52,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92972995] [2024-06-27 18:31:52,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:52,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:31:52,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:52,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:31:52,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:31:52,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:31:52,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 343 transitions, 4193 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-27 18:31:52,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:52,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:31:52,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:54,486 INFO L124 PetriNetUnfolderBase]: 7843/11947 cut-off events. [2024-06-27 18:31:54,486 INFO L125 PetriNetUnfolderBase]: For 645069/645085 co-relation queries the response was YES. [2024-06-27 18:31:54,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84514 conditions, 11947 events. 7843/11947 cut-off events. For 645069/645085 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 74922 event pairs, 1905 based on Foata normal form. 1/11830 useless extension candidates. Maximal degree in co-relation 84389. Up to 11096 conditions per place. [2024-06-27 18:31:54,654 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 318 selfloop transitions, 53 changer transitions 0/388 dead transitions. [2024-06-27 18:31:54,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 388 transitions, 5180 flow [2024-06-27 18:31:54,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:31:54,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:31:54,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 18:31:54,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817708333333333 [2024-06-27 18:31:54,656 INFO L175 Difference]: Start difference. First operand has 274 places, 343 transitions, 4193 flow. Second operand 8 states and 185 transitions. [2024-06-27 18:31:54,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 388 transitions, 5180 flow [2024-06-27 18:31:56,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 388 transitions, 4832 flow, removed 119 selfloop flow, removed 5 redundant places. [2024-06-27 18:31:56,154 INFO L231 Difference]: Finished difference. Result has 278 places, 352 transitions, 4091 flow [2024-06-27 18:31:56,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3845, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4091, PETRI_PLACES=278, PETRI_TRANSITIONS=352} [2024-06-27 18:31:56,154 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 224 predicate places. [2024-06-27 18:31:56,155 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 352 transitions, 4091 flow [2024-06-27 18:31:56,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-27 18:31:56,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:56,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:56,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:31:56,155 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:31:56,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:56,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1754520177, now seen corresponding path program 1 times [2024-06-27 18:31:56,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:56,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219062312] [2024-06-27 18:31:56,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:56,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:57,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:57,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:57,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219062312] [2024-06-27 18:31:57,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219062312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:57,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:57,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:31:57,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626662007] [2024-06-27 18:31:57,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:57,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:31:57,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:57,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:31:57,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:31:57,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:31:57,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 352 transitions, 4091 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-27 18:31:57,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:57,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:31:57,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:59,399 INFO L124 PetriNetUnfolderBase]: 7867/12325 cut-off events. [2024-06-27 18:31:59,399 INFO L125 PetriNetUnfolderBase]: For 659589/659716 co-relation queries the response was YES. [2024-06-27 18:31:59,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83585 conditions, 12325 events. 7867/12325 cut-off events. For 659589/659716 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 80959 event pairs, 2236 based on Foata normal form. 83/12058 useless extension candidates. Maximal degree in co-relation 83457. Up to 10948 conditions per place. [2024-06-27 18:31:59,578 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 323 selfloop transitions, 44 changer transitions 0/402 dead transitions. [2024-06-27 18:31:59,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 402 transitions, 5253 flow [2024-06-27 18:31:59,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:31:59,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:31:59,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 18:31:59,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-06-27 18:31:59,579 INFO L175 Difference]: Start difference. First operand has 278 places, 352 transitions, 4091 flow. Second operand 8 states and 191 transitions. [2024-06-27 18:31:59,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 402 transitions, 5253 flow [2024-06-27 18:32:00,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 402 transitions, 5152 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-27 18:32:00,813 INFO L231 Difference]: Finished difference. Result has 284 places, 362 transitions, 4274 flow [2024-06-27 18:32:00,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3990, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4274, PETRI_PLACES=284, PETRI_TRANSITIONS=362} [2024-06-27 18:32:00,813 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 230 predicate places. [2024-06-27 18:32:00,813 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 362 transitions, 4274 flow [2024-06-27 18:32:00,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-27 18:32:00,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:00,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:00,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:32:00,814 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:32:00,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:00,815 INFO L85 PathProgramCache]: Analyzing trace with hash 322447951, now seen corresponding path program 3 times [2024-06-27 18:32:00,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:00,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374814958] [2024-06-27 18:32:00,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:00,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:01,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:01,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:01,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374814958] [2024-06-27 18:32:01,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374814958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:01,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:01,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:32:01,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152557520] [2024-06-27 18:32:01,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:01,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:32:01,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:01,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:32:01,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:32:01,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:32:01,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 362 transitions, 4274 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:01,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:01,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:32:01,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:04,080 INFO L124 PetriNetUnfolderBase]: 8037/12808 cut-off events. [2024-06-27 18:32:04,080 INFO L125 PetriNetUnfolderBase]: For 688355/688383 co-relation queries the response was YES. [2024-06-27 18:32:04,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88799 conditions, 12808 events. 8037/12808 cut-off events. For 688355/688383 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 86281 event pairs, 2559 based on Foata normal form. 1/12527 useless extension candidates. Maximal degree in co-relation 88669. Up to 11427 conditions per place. [2024-06-27 18:32:04,256 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 346 selfloop transitions, 28 changer transitions 0/391 dead transitions. [2024-06-27 18:32:04,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 391 transitions, 5244 flow [2024-06-27 18:32:04,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:32:04,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:32:04,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 18:32:04,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-27 18:32:04,257 INFO L175 Difference]: Start difference. First operand has 284 places, 362 transitions, 4274 flow. Second operand 7 states and 163 transitions. [2024-06-27 18:32:04,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 391 transitions, 5244 flow [2024-06-27 18:32:05,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 391 transitions, 5138 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-06-27 18:32:05,391 INFO L231 Difference]: Finished difference. Result has 288 places, 362 transitions, 4230 flow [2024-06-27 18:32:05,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4168, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4230, PETRI_PLACES=288, PETRI_TRANSITIONS=362} [2024-06-27 18:32:05,391 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 234 predicate places. [2024-06-27 18:32:05,392 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 362 transitions, 4230 flow [2024-06-27 18:32:05,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:05,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:05,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:05,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:32:05,392 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:32:05,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:05,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1582983451, now seen corresponding path program 4 times [2024-06-27 18:32:05,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:05,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761782179] [2024-06-27 18:32:05,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:05,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:06,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:06,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:06,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761782179] [2024-06-27 18:32:06,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761782179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:06,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:06,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:32:06,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241085302] [2024-06-27 18:32:06,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:06,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:32:06,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:06,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:32:06,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:32:06,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:32:06,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 362 transitions, 4230 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:06,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:06,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:32:06,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:08,700 INFO L124 PetriNetUnfolderBase]: 8035/12820 cut-off events. [2024-06-27 18:32:08,700 INFO L125 PetriNetUnfolderBase]: For 693185/693199 co-relation queries the response was YES. [2024-06-27 18:32:08,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88211 conditions, 12820 events. 8035/12820 cut-off events. For 693185/693199 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 86496 event pairs, 2550 based on Foata normal form. 1/12546 useless extension candidates. Maximal degree in co-relation 88078. Up to 11462 conditions per place. [2024-06-27 18:32:08,885 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 348 selfloop transitions, 24 changer transitions 0/389 dead transitions. [2024-06-27 18:32:08,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 389 transitions, 5107 flow [2024-06-27 18:32:08,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:32:08,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:32:08,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-27 18:32:08,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-27 18:32:08,887 INFO L175 Difference]: Start difference. First operand has 288 places, 362 transitions, 4230 flow. Second operand 7 states and 157 transitions. [2024-06-27 18:32:08,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 389 transitions, 5107 flow [2024-06-27 18:32:09,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 389 transitions, 5025 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 18:32:09,965 INFO L231 Difference]: Finished difference. Result has 291 places, 366 transitions, 4273 flow [2024-06-27 18:32:09,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4165, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4273, PETRI_PLACES=291, PETRI_TRANSITIONS=366} [2024-06-27 18:32:09,966 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 237 predicate places. [2024-06-27 18:32:09,966 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 366 transitions, 4273 flow [2024-06-27 18:32:09,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:09,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:09,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:09,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:32:09,966 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:32:09,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:09,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1466091761, now seen corresponding path program 5 times [2024-06-27 18:32:09,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:09,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769299904] [2024-06-27 18:32:09,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:09,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:10,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:10,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:10,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769299904] [2024-06-27 18:32:10,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769299904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:10,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:10,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:32:10,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582475275] [2024-06-27 18:32:10,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:10,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:32:10,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:10,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:32:10,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:32:10,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:32:10,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 366 transitions, 4273 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:10,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:10,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:32:10,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:13,026 INFO L124 PetriNetUnfolderBase]: 8032/12817 cut-off events. [2024-06-27 18:32:13,026 INFO L125 PetriNetUnfolderBase]: For 706889/706905 co-relation queries the response was YES. [2024-06-27 18:32:13,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88320 conditions, 12817 events. 8032/12817 cut-off events. For 706889/706905 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 86498 event pairs, 2589 based on Foata normal form. 3/12545 useless extension candidates. Maximal degree in co-relation 88187. Up to 11458 conditions per place. [2024-06-27 18:32:13,224 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 345 selfloop transitions, 24 changer transitions 0/386 dead transitions. [2024-06-27 18:32:13,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 386 transitions, 5071 flow [2024-06-27 18:32:13,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:32:13,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:32:13,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-27 18:32:13,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 18:32:13,225 INFO L175 Difference]: Start difference. First operand has 291 places, 366 transitions, 4273 flow. Second operand 7 states and 154 transitions. [2024-06-27 18:32:13,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 386 transitions, 5071 flow [2024-06-27 18:32:14,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 386 transitions, 4989 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-27 18:32:14,708 INFO L231 Difference]: Finished difference. Result has 294 places, 366 transitions, 4245 flow [2024-06-27 18:32:14,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4191, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4245, PETRI_PLACES=294, PETRI_TRANSITIONS=366} [2024-06-27 18:32:14,709 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 240 predicate places. [2024-06-27 18:32:14,709 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 366 transitions, 4245 flow [2024-06-27 18:32:14,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:14,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:14,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:14,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:32:14,710 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:32:14,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:14,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1115384371, now seen corresponding path program 6 times [2024-06-27 18:32:14,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:14,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759920738] [2024-06-27 18:32:14,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:14,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:15,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:15,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:15,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759920738] [2024-06-27 18:32:15,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759920738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:15,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:15,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:32:15,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505383502] [2024-06-27 18:32:15,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:15,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:32:15,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:15,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:32:15,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:32:15,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:32:15,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 366 transitions, 4245 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:15,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:15,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:32:15,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:17,820 INFO L124 PetriNetUnfolderBase]: 8048/12828 cut-off events. [2024-06-27 18:32:17,820 INFO L125 PetriNetUnfolderBase]: For 723687/723717 co-relation queries the response was YES. [2024-06-27 18:32:17,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88662 conditions, 12828 events. 8048/12828 cut-off events. For 723687/723717 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 86468 event pairs, 2589 based on Foata normal form. 3/12548 useless extension candidates. Maximal degree in co-relation 88528. Up to 11444 conditions per place. [2024-06-27 18:32:18,018 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 339 selfloop transitions, 32 changer transitions 0/388 dead transitions. [2024-06-27 18:32:18,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 388 transitions, 5067 flow [2024-06-27 18:32:18,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:32:18,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:32:18,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-27 18:32:18,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-27 18:32:18,019 INFO L175 Difference]: Start difference. First operand has 294 places, 366 transitions, 4245 flow. Second operand 7 states and 156 transitions. [2024-06-27 18:32:18,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 388 transitions, 5067 flow [2024-06-27 18:32:19,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 388 transitions, 4990 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 18:32:19,164 INFO L231 Difference]: Finished difference. Result has 296 places, 366 transitions, 4238 flow [2024-06-27 18:32:19,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4168, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4238, PETRI_PLACES=296, PETRI_TRANSITIONS=366} [2024-06-27 18:32:19,165 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 242 predicate places. [2024-06-27 18:32:19,165 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 366 transitions, 4238 flow [2024-06-27 18:32:19,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:19,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:19,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:19,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:32:19,165 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:32:19,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:19,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1114284007, now seen corresponding path program 5 times [2024-06-27 18:32:19,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:19,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748916752] [2024-06-27 18:32:19,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:19,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:20,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:20,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:20,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748916752] [2024-06-27 18:32:20,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748916752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:20,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:20,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:32:20,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462825960] [2024-06-27 18:32:20,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:20,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:32:20,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:20,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:32:20,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:32:20,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:32:20,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 366 transitions, 4238 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:20,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:20,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:32:20,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:23,454 INFO L124 PetriNetUnfolderBase]: 8122/12938 cut-off events. [2024-06-27 18:32:23,454 INFO L125 PetriNetUnfolderBase]: For 769776/769790 co-relation queries the response was YES. [2024-06-27 18:32:23,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90198 conditions, 12938 events. 8122/12938 cut-off events. For 769776/769790 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 87306 event pairs, 2528 based on Foata normal form. 12/12679 useless extension candidates. Maximal degree in co-relation 90063. Up to 11237 conditions per place. [2024-06-27 18:32:23,660 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 377 selfloop transitions, 35 changer transitions 0/429 dead transitions. [2024-06-27 18:32:23,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 429 transitions, 5364 flow [2024-06-27 18:32:23,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:32:23,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:32:23,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 240 transitions. [2024-06-27 18:32:23,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:32:23,661 INFO L175 Difference]: Start difference. First operand has 296 places, 366 transitions, 4238 flow. Second operand 10 states and 240 transitions. [2024-06-27 18:32:23,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 429 transitions, 5364 flow [2024-06-27 18:32:24,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 429 transitions, 5266 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 18:32:24,788 INFO L231 Difference]: Finished difference. Result has 299 places, 367 transitions, 4284 flow [2024-06-27 18:32:24,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4140, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4284, PETRI_PLACES=299, PETRI_TRANSITIONS=367} [2024-06-27 18:32:24,788 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 245 predicate places. [2024-06-27 18:32:24,789 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 367 transitions, 4284 flow [2024-06-27 18:32:24,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:24,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:24,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:24,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:32:24,789 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:32:24,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:24,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1433432619, now seen corresponding path program 6 times [2024-06-27 18:32:24,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:24,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651528921] [2024-06-27 18:32:24,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:24,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:26,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:26,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:26,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651528921] [2024-06-27 18:32:26,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651528921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:26,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:26,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:26,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363458655] [2024-06-27 18:32:26,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:26,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:26,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:26,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:26,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:26,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:32:26,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 367 transitions, 4284 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:26,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:26,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:32:26,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:29,280 INFO L124 PetriNetUnfolderBase]: 8239/13105 cut-off events. [2024-06-27 18:32:29,281 INFO L125 PetriNetUnfolderBase]: For 817457/817485 co-relation queries the response was YES. [2024-06-27 18:32:29,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92934 conditions, 13105 events. 8239/13105 cut-off events. For 817457/817485 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 88523 event pairs, 2508 based on Foata normal form. 12/12841 useless extension candidates. Maximal degree in co-relation 92799. Up to 11192 conditions per place. [2024-06-27 18:32:29,480 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 360 selfloop transitions, 66 changer transitions 0/443 dead transitions. [2024-06-27 18:32:29,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 443 transitions, 5757 flow [2024-06-27 18:32:29,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:32:29,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:32:29,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 243 transitions. [2024-06-27 18:32:29,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50625 [2024-06-27 18:32:29,481 INFO L175 Difference]: Start difference. First operand has 299 places, 367 transitions, 4284 flow. Second operand 10 states and 243 transitions. [2024-06-27 18:32:29,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 443 transitions, 5757 flow [2024-06-27 18:32:30,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 443 transitions, 5629 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-27 18:32:30,880 INFO L231 Difference]: Finished difference. Result has 303 places, 377 transitions, 4711 flow [2024-06-27 18:32:30,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4156, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4711, PETRI_PLACES=303, PETRI_TRANSITIONS=377} [2024-06-27 18:32:30,881 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 249 predicate places. [2024-06-27 18:32:30,881 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 377 transitions, 4711 flow [2024-06-27 18:32:30,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:30,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:30,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:30,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:32:30,881 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:32:30,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:30,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1260712089, now seen corresponding path program 7 times [2024-06-27 18:32:30,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:30,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743034812] [2024-06-27 18:32:30,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:30,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:32,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:32,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:32,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743034812] [2024-06-27 18:32:32,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743034812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:32,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:32,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:32,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725945235] [2024-06-27 18:32:32,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:32,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:32,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:32,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:32,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:32,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:32:32,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 377 transitions, 4711 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:32,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:32,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:32:32,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:35,375 INFO L124 PetriNetUnfolderBase]: 8350/13330 cut-off events. [2024-06-27 18:32:35,375 INFO L125 PetriNetUnfolderBase]: For 854412/854440 co-relation queries the response was YES. [2024-06-27 18:32:35,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95729 conditions, 13330 events. 8350/13330 cut-off events. For 854412/854440 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 90680 event pairs, 2550 based on Foata normal form. 12/13052 useless extension candidates. Maximal degree in co-relation 95591. Up to 11486 conditions per place. [2024-06-27 18:32:35,600 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 368 selfloop transitions, 64 changer transitions 0/449 dead transitions. [2024-06-27 18:32:35,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 449 transitions, 6068 flow [2024-06-27 18:32:35,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:32:35,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:32:35,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 242 transitions. [2024-06-27 18:32:35,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041666666666667 [2024-06-27 18:32:35,602 INFO L175 Difference]: Start difference. First operand has 303 places, 377 transitions, 4711 flow. Second operand 10 states and 242 transitions. [2024-06-27 18:32:35,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 449 transitions, 6068 flow [2024-06-27 18:32:37,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 449 transitions, 5633 flow, removed 206 selfloop flow, removed 3 redundant places. [2024-06-27 18:32:37,222 INFO L231 Difference]: Finished difference. Result has 312 places, 384 transitions, 4697 flow [2024-06-27 18:32:37,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4388, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4697, PETRI_PLACES=312, PETRI_TRANSITIONS=384} [2024-06-27 18:32:37,222 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 258 predicate places. [2024-06-27 18:32:37,222 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 384 transitions, 4697 flow [2024-06-27 18:32:37,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:37,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:37,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:37,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:32:37,223 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:32:37,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:37,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1503293721, now seen corresponding path program 8 times [2024-06-27 18:32:37,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:37,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412292029] [2024-06-27 18:32:37,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:37,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:38,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:38,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:38,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412292029] [2024-06-27 18:32:38,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412292029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:38,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:38,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:32:38,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975454902] [2024-06-27 18:32:38,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:38,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:32:38,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:38,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:32:38,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:32:38,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:32:38,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 384 transitions, 4697 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:38,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:38,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:32:38,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:41,114 INFO L124 PetriNetUnfolderBase]: 8443/13530 cut-off events. [2024-06-27 18:32:41,114 INFO L125 PetriNetUnfolderBase]: For 864588/864616 co-relation queries the response was YES. [2024-06-27 18:32:41,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96187 conditions, 13530 events. 8443/13530 cut-off events. For 864588/864616 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 92712 event pairs, 2588 based on Foata normal form. 12/13239 useless extension candidates. Maximal degree in co-relation 96045. Up to 11829 conditions per place. [2024-06-27 18:32:41,365 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 399 selfloop transitions, 35 changer transitions 0/451 dead transitions. [2024-06-27 18:32:41,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 451 transitions, 6053 flow [2024-06-27 18:32:41,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:32:41,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:32:41,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 236 transitions. [2024-06-27 18:32:41,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-06-27 18:32:41,367 INFO L175 Difference]: Start difference. First operand has 312 places, 384 transitions, 4697 flow. Second operand 10 states and 236 transitions. [2024-06-27 18:32:41,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 451 transitions, 6053 flow [2024-06-27 18:32:43,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 451 transitions, 5864 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-27 18:32:43,230 INFO L231 Difference]: Finished difference. Result has 318 places, 389 transitions, 4891 flow [2024-06-27 18:32:43,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4508, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4891, PETRI_PLACES=318, PETRI_TRANSITIONS=389} [2024-06-27 18:32:43,231 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 264 predicate places. [2024-06-27 18:32:43,231 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 389 transitions, 4891 flow [2024-06-27 18:32:43,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:43,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:43,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:43,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:32:43,232 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:32:43,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:43,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1690563039, now seen corresponding path program 9 times [2024-06-27 18:32:43,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:43,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932513355] [2024-06-27 18:32:43,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:43,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:44,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:44,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:44,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932513355] [2024-06-27 18:32:44,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932513355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:44,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:44,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:32:44,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192077718] [2024-06-27 18:32:44,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:44,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:32:44,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:44,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:32:44,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:32:44,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:32:44,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 389 transitions, 4891 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:44,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:44,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:32:44,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:47,545 INFO L124 PetriNetUnfolderBase]: 8536/13655 cut-off events. [2024-06-27 18:32:47,545 INFO L125 PetriNetUnfolderBase]: For 896675/896703 co-relation queries the response was YES. [2024-06-27 18:32:47,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97505 conditions, 13655 events. 8536/13655 cut-off events. For 896675/896703 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 93506 event pairs, 2673 based on Foata normal form. 12/13370 useless extension candidates. Maximal degree in co-relation 97360. Up to 11753 conditions per place. [2024-06-27 18:32:47,795 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 391 selfloop transitions, 45 changer transitions 0/453 dead transitions. [2024-06-27 18:32:47,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 453 transitions, 6057 flow [2024-06-27 18:32:47,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:32:47,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:32:47,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2024-06-27 18:32:47,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4979166666666667 [2024-06-27 18:32:47,797 INFO L175 Difference]: Start difference. First operand has 318 places, 389 transitions, 4891 flow. Second operand 10 states and 239 transitions. [2024-06-27 18:32:47,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 453 transitions, 6057 flow [2024-06-27 18:32:49,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 453 transitions, 5758 flow, removed 133 selfloop flow, removed 5 redundant places. [2024-06-27 18:32:49,674 INFO L231 Difference]: Finished difference. Result has 323 places, 390 transitions, 4765 flow [2024-06-27 18:32:49,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4592, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4765, PETRI_PLACES=323, PETRI_TRANSITIONS=390} [2024-06-27 18:32:49,675 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 269 predicate places. [2024-06-27 18:32:49,675 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 390 transitions, 4765 flow [2024-06-27 18:32:49,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:49,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:49,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:49,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:32:49,676 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:32:49,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:49,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1158189653, now seen corresponding path program 10 times [2024-06-27 18:32:49,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:49,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762719272] [2024-06-27 18:32:49,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:49,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:51,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:51,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:51,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762719272] [2024-06-27 18:32:51,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762719272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:51,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:51,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:51,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249568180] [2024-06-27 18:32:51,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:51,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:51,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:51,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:51,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:51,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:32:51,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 390 transitions, 4765 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:51,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:51,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:32:51,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:54,126 INFO L124 PetriNetUnfolderBase]: 8536/13675 cut-off events. [2024-06-27 18:32:54,126 INFO L125 PetriNetUnfolderBase]: For 875620/875648 co-relation queries the response was YES. [2024-06-27 18:32:54,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96181 conditions, 13675 events. 8536/13675 cut-off events. For 875620/875648 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 93892 event pairs, 2697 based on Foata normal form. 12/13385 useless extension candidates. Maximal degree in co-relation 96034. Up to 11907 conditions per place. [2024-06-27 18:32:54,437 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 397 selfloop transitions, 39 changer transitions 0/453 dead transitions. [2024-06-27 18:32:54,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 453 transitions, 5843 flow [2024-06-27 18:32:54,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:32:54,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:32:54,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 237 transitions. [2024-06-27 18:32:54,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49375 [2024-06-27 18:32:54,438 INFO L175 Difference]: Start difference. First operand has 323 places, 390 transitions, 4765 flow. Second operand 10 states and 237 transitions. [2024-06-27 18:32:54,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 453 transitions, 5843 flow [2024-06-27 18:32:56,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 453 transitions, 5688 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-27 18:32:56,304 INFO L231 Difference]: Finished difference. Result has 324 places, 390 transitions, 4679 flow [2024-06-27 18:32:56,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4518, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4679, PETRI_PLACES=324, PETRI_TRANSITIONS=390} [2024-06-27 18:32:56,305 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 270 predicate places. [2024-06-27 18:32:56,305 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 390 transitions, 4679 flow [2024-06-27 18:32:56,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:56,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:56,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:56,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:32:56,306 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:32:56,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:56,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1524279631, now seen corresponding path program 2 times [2024-06-27 18:32:56,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:56,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821393151] [2024-06-27 18:32:56,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:56,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:57,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:57,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:57,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821393151] [2024-06-27 18:32:57,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821393151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:57,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:57,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:32:57,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196799083] [2024-06-27 18:32:57,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:57,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:32:57,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:57,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:32:57,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:32:57,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:32:57,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 390 transitions, 4679 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-27 18:32:57,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:57,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:32:57,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:59,806 INFO L124 PetriNetUnfolderBase]: 8370/13320 cut-off events. [2024-06-27 18:32:59,806 INFO L125 PetriNetUnfolderBase]: For 853214/853401 co-relation queries the response was YES. [2024-06-27 18:33:00,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91997 conditions, 13320 events. 8370/13320 cut-off events. For 853214/853401 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 90607 event pairs, 2790 based on Foata normal form. 101/13053 useless extension candidates. Maximal degree in co-relation 91849. Up to 11895 conditions per place. [2024-06-27 18:33:00,075 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 355 selfloop transitions, 32 changer transitions 0/425 dead transitions. [2024-06-27 18:33:00,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 425 transitions, 5783 flow [2024-06-27 18:33:00,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:00,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:00,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-27 18:33:00,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4713541666666667 [2024-06-27 18:33:00,076 INFO L175 Difference]: Start difference. First operand has 324 places, 390 transitions, 4679 flow. Second operand 8 states and 181 transitions. [2024-06-27 18:33:00,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 425 transitions, 5783 flow [2024-06-27 18:33:01,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 425 transitions, 5638 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-27 18:33:01,670 INFO L231 Difference]: Finished difference. Result has 324 places, 393 transitions, 4670 flow [2024-06-27 18:33:01,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4534, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4670, PETRI_PLACES=324, PETRI_TRANSITIONS=393} [2024-06-27 18:33:01,670 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 270 predicate places. [2024-06-27 18:33:01,670 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 393 transitions, 4670 flow [2024-06-27 18:33:01,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-27 18:33:01,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:01,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:01,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:33:01,671 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:33:01,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:01,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1439045391, now seen corresponding path program 4 times [2024-06-27 18:33:01,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:01,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838563001] [2024-06-27 18:33:01,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:01,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:02,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:02,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:02,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838563001] [2024-06-27 18:33:02,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838563001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:02,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:02,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:02,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552003572] [2024-06-27 18:33:02,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:02,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:02,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:02,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:02,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:02,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:33:02,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 393 transitions, 4670 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-27 18:33:02,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:02,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:33:02,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:05,420 INFO L124 PetriNetUnfolderBase]: 8627/13850 cut-off events. [2024-06-27 18:33:05,421 INFO L125 PetriNetUnfolderBase]: For 850032/850064 co-relation queries the response was YES. [2024-06-27 18:33:05,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95348 conditions, 13850 events. 8627/13850 cut-off events. For 850032/850064 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 95553 event pairs, 2776 based on Foata normal form. 1/13527 useless extension candidates. Maximal degree in co-relation 95199. Up to 12360 conditions per place. [2024-06-27 18:33:05,676 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 376 selfloop transitions, 29 changer transitions 0/422 dead transitions. [2024-06-27 18:33:05,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 422 transitions, 5590 flow [2024-06-27 18:33:05,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:05,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:05,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2024-06-27 18:33:05,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-27 18:33:05,678 INFO L175 Difference]: Start difference. First operand has 324 places, 393 transitions, 4670 flow. Second operand 8 states and 174 transitions. [2024-06-27 18:33:05,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 422 transitions, 5590 flow [2024-06-27 18:33:07,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 422 transitions, 5436 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-27 18:33:07,426 INFO L231 Difference]: Finished difference. Result has 326 places, 393 transitions, 4581 flow [2024-06-27 18:33:07,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4516, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4581, PETRI_PLACES=326, PETRI_TRANSITIONS=393} [2024-06-27 18:33:07,427 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 272 predicate places. [2024-06-27 18:33:07,427 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 393 transitions, 4581 flow [2024-06-27 18:33:07,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-27 18:33:07,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:07,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:07,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:33:07,428 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:33:07,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:07,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1101595695, now seen corresponding path program 3 times [2024-06-27 18:33:07,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:07,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094304672] [2024-06-27 18:33:07,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:07,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:08,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:08,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:08,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094304672] [2024-06-27 18:33:08,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094304672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:08,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:08,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:08,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086469549] [2024-06-27 18:33:08,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:08,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:08,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:08,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:08,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:08,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:33:08,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 393 transitions, 4581 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-27 18:33:08,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:08,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:33:08,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:10,959 INFO L124 PetriNetUnfolderBase]: 8469/13490 cut-off events. [2024-06-27 18:33:10,960 INFO L125 PetriNetUnfolderBase]: For 859299/859478 co-relation queries the response was YES. [2024-06-27 18:33:11,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91413 conditions, 13490 events. 8469/13490 cut-off events. For 859299/859478 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 92091 event pairs, 2810 based on Foata normal form. 101/13216 useless extension candidates. Maximal degree in co-relation 91264. Up to 12061 conditions per place. [2024-06-27 18:33:11,226 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 362 selfloop transitions, 26 changer transitions 0/426 dead transitions. [2024-06-27 18:33:11,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 426 transitions, 5667 flow [2024-06-27 18:33:11,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:11,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:11,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-06-27 18:33:11,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2024-06-27 18:33:11,227 INFO L175 Difference]: Start difference. First operand has 326 places, 393 transitions, 4581 flow. Second operand 8 states and 178 transitions. [2024-06-27 18:33:11,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 426 transitions, 5667 flow [2024-06-27 18:33:13,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 426 transitions, 5502 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 18:33:13,055 INFO L231 Difference]: Finished difference. Result has 325 places, 396 transitions, 4536 flow [2024-06-27 18:33:13,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4416, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4536, PETRI_PLACES=325, PETRI_TRANSITIONS=396} [2024-06-27 18:33:13,055 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 271 predicate places. [2024-06-27 18:33:13,055 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 396 transitions, 4536 flow [2024-06-27 18:33:13,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-27 18:33:13,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:13,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:13,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:33:13,056 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:33:13,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:13,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1101121395, now seen corresponding path program 4 times [2024-06-27 18:33:13,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:13,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588351477] [2024-06-27 18:33:13,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:13,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:13,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:13,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:13,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588351477] [2024-06-27 18:33:13,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588351477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:13,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:13,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:13,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991171849] [2024-06-27 18:33:13,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:13,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:13,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:13,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:13,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:13,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:33:13,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 396 transitions, 4536 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-27 18:33:13,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:13,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:33:13,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:16,696 INFO L124 PetriNetUnfolderBase]: 8452/13479 cut-off events. [2024-06-27 18:33:16,696 INFO L125 PetriNetUnfolderBase]: For 860211/860366 co-relation queries the response was YES. [2024-06-27 18:33:16,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90914 conditions, 13479 events. 8452/13479 cut-off events. For 860211/860366 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 92123 event pairs, 2810 based on Foata normal form. 102/13205 useless extension candidates. Maximal degree in co-relation 90766. Up to 12092 conditions per place. [2024-06-27 18:33:16,921 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 362 selfloop transitions, 21 changer transitions 0/421 dead transitions. [2024-06-27 18:33:16,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 421 transitions, 5374 flow [2024-06-27 18:33:16,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:16,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:16,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-06-27 18:33:16,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-27 18:33:16,922 INFO L175 Difference]: Start difference. First operand has 325 places, 396 transitions, 4536 flow. Second operand 8 states and 172 transitions. [2024-06-27 18:33:16,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 421 transitions, 5374 flow [2024-06-27 18:33:18,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 421 transitions, 5215 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-27 18:33:18,634 INFO L231 Difference]: Finished difference. Result has 327 places, 396 transitions, 4425 flow [2024-06-27 18:33:18,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4377, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4425, PETRI_PLACES=327, PETRI_TRANSITIONS=396} [2024-06-27 18:33:18,635 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 273 predicate places. [2024-06-27 18:33:18,635 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 396 transitions, 4425 flow [2024-06-27 18:33:18,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-27 18:33:18,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:18,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:18,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:33:18,635 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:33:18,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:18,636 INFO L85 PathProgramCache]: Analyzing trace with hash 331088333, now seen corresponding path program 1 times [2024-06-27 18:33:18,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:18,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563541071] [2024-06-27 18:33:18,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:18,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:19,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:19,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563541071] [2024-06-27 18:33:19,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563541071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:19,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:19,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:19,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210974501] [2024-06-27 18:33:19,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:19,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:19,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:19,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:19,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:19,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:33:19,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 396 transitions, 4425 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:33:19,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:19,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:33:19,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:22,265 INFO L124 PetriNetUnfolderBase]: 9153/14505 cut-off events. [2024-06-27 18:33:22,265 INFO L125 PetriNetUnfolderBase]: For 881705/881705 co-relation queries the response was YES. [2024-06-27 18:33:22,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97367 conditions, 14505 events. 9153/14505 cut-off events. For 881705/881705 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 98609 event pairs, 2981 based on Foata normal form. 2/14194 useless extension candidates. Maximal degree in co-relation 97218. Up to 13142 conditions per place. [2024-06-27 18:33:22,544 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 400 selfloop transitions, 28 changer transitions 0/436 dead transitions. [2024-06-27 18:33:22,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 436 transitions, 5449 flow [2024-06-27 18:33:22,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:22,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:22,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-27 18:33:22,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 18:33:22,546 INFO L175 Difference]: Start difference. First operand has 327 places, 396 transitions, 4425 flow. Second operand 8 states and 176 transitions. [2024-06-27 18:33:22,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 436 transitions, 5449 flow [2024-06-27 18:33:24,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 436 transitions, 5394 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 18:33:24,782 INFO L231 Difference]: Finished difference. Result has 328 places, 399 transitions, 4486 flow [2024-06-27 18:33:24,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4370, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4486, PETRI_PLACES=328, PETRI_TRANSITIONS=399} [2024-06-27 18:33:24,783 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 274 predicate places. [2024-06-27 18:33:24,783 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 399 transitions, 4486 flow [2024-06-27 18:33:24,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:33:24,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:24,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:24,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:33:24,783 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:33:24,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:24,783 INFO L85 PathProgramCache]: Analyzing trace with hash 334807403, now seen corresponding path program 2 times [2024-06-27 18:33:24,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:24,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539529911] [2024-06-27 18:33:24,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:24,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:25,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:25,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:25,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539529911] [2024-06-27 18:33:25,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539529911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:25,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:25,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:25,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816536483] [2024-06-27 18:33:25,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:25,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:25,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:25,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:25,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:25,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:33:25,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 399 transitions, 4486 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:33:25,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:25,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:33:25,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:28,496 INFO L124 PetriNetUnfolderBase]: 9227/14611 cut-off events. [2024-06-27 18:33:28,496 INFO L125 PetriNetUnfolderBase]: For 910995/910995 co-relation queries the response was YES. [2024-06-27 18:33:28,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99363 conditions, 14611 events. 9227/14611 cut-off events. For 910995/910995 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 99301 event pairs, 2952 based on Foata normal form. 2/14298 useless extension candidates. Maximal degree in co-relation 99213. Up to 13025 conditions per place. [2024-06-27 18:33:28,738 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 379 selfloop transitions, 60 changer transitions 0/447 dead transitions. [2024-06-27 18:33:28,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 447 transitions, 5990 flow [2024-06-27 18:33:28,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:28,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:28,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 18:33:28,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 18:33:28,740 INFO L175 Difference]: Start difference. First operand has 328 places, 399 transitions, 4486 flow. Second operand 8 states and 184 transitions. [2024-06-27 18:33:28,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 447 transitions, 5990 flow [2024-06-27 18:33:30,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 447 transitions, 5896 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 18:33:30,552 INFO L231 Difference]: Finished difference. Result has 330 places, 408 transitions, 4686 flow [2024-06-27 18:33:30,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4392, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4686, PETRI_PLACES=330, PETRI_TRANSITIONS=408} [2024-06-27 18:33:30,553 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 276 predicate places. [2024-06-27 18:33:30,553 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 408 transitions, 4686 flow [2024-06-27 18:33:30,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:33:30,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:30,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:30,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:33:30,554 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:33:30,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:30,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1331621017, now seen corresponding path program 3 times [2024-06-27 18:33:30,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:30,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585021336] [2024-06-27 18:33:30,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:30,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:31,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:31,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:31,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585021336] [2024-06-27 18:33:31,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585021336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:31,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:31,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:31,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552012547] [2024-06-27 18:33:31,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:31,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:31,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:31,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:31,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:31,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:33:31,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 408 transitions, 4686 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:33:31,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:31,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:33:31,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:34,643 INFO L124 PetriNetUnfolderBase]: 9221/14595 cut-off events. [2024-06-27 18:33:34,643 INFO L125 PetriNetUnfolderBase]: For 929672/929672 co-relation queries the response was YES. [2024-06-27 18:33:34,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100244 conditions, 14595 events. 9221/14595 cut-off events. For 929672/929672 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 99152 event pairs, 2980 based on Foata normal form. 2/14284 useless extension candidates. Maximal degree in co-relation 100093. Up to 13020 conditions per place. [2024-06-27 18:33:34,964 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 377 selfloop transitions, 61 changer transitions 0/446 dead transitions. [2024-06-27 18:33:34,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 446 transitions, 5872 flow [2024-06-27 18:33:34,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:34,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:34,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-27 18:33:34,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4739583333333333 [2024-06-27 18:33:34,966 INFO L175 Difference]: Start difference. First operand has 330 places, 408 transitions, 4686 flow. Second operand 8 states and 182 transitions. [2024-06-27 18:33:34,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 446 transitions, 5872 flow [2024-06-27 18:33:36,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 446 transitions, 5742 flow, removed 48 selfloop flow, removed 3 redundant places. [2024-06-27 18:33:36,728 INFO L231 Difference]: Finished difference. Result has 335 places, 408 transitions, 4684 flow [2024-06-27 18:33:36,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4556, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4684, PETRI_PLACES=335, PETRI_TRANSITIONS=408} [2024-06-27 18:33:36,728 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 281 predicate places. [2024-06-27 18:33:36,728 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 408 transitions, 4684 flow [2024-06-27 18:33:36,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:33:36,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:36,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:36,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:33:36,729 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:33:36,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:36,729 INFO L85 PathProgramCache]: Analyzing trace with hash 334813200, now seen corresponding path program 1 times [2024-06-27 18:33:36,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:36,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195081318] [2024-06-27 18:33:36,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:36,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:38,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:38,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:38,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195081318] [2024-06-27 18:33:38,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195081318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:38,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:38,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:38,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695139220] [2024-06-27 18:33:38,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:38,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:38,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:38,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:38,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:38,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:33:38,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 408 transitions, 4684 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:33:38,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:38,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:33:38,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:42,089 INFO L124 PetriNetUnfolderBase]: 9272/14634 cut-off events. [2024-06-27 18:33:42,089 INFO L125 PetriNetUnfolderBase]: For 950845/950845 co-relation queries the response was YES. [2024-06-27 18:33:42,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100882 conditions, 14634 events. 9272/14634 cut-off events. For 950845/950845 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 98961 event pairs, 2987 based on Foata normal form. 3/14332 useless extension candidates. Maximal degree in co-relation 100729. Up to 13188 conditions per place. [2024-06-27 18:33:42,307 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 398 selfloop transitions, 48 changer transitions 0/454 dead transitions. [2024-06-27 18:33:42,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 454 transitions, 5986 flow [2024-06-27 18:33:42,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:42,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:42,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-27 18:33:42,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765625 [2024-06-27 18:33:42,309 INFO L175 Difference]: Start difference. First operand has 335 places, 408 transitions, 4684 flow. Second operand 8 states and 183 transitions. [2024-06-27 18:33:42,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 454 transitions, 5986 flow [2024-06-27 18:33:44,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 454 transitions, 5855 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 18:33:44,067 INFO L231 Difference]: Finished difference. Result has 336 places, 414 transitions, 4757 flow [2024-06-27 18:33:44,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4553, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4757, PETRI_PLACES=336, PETRI_TRANSITIONS=414} [2024-06-27 18:33:44,068 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 282 predicate places. [2024-06-27 18:33:44,068 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 414 transitions, 4757 flow [2024-06-27 18:33:44,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:33:44,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:44,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:44,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:33:44,069 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:33:44,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:44,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1466100813, now seen corresponding path program 4 times [2024-06-27 18:33:44,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:44,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141712171] [2024-06-27 18:33:44,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:44,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:44,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:44,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:44,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141712171] [2024-06-27 18:33:44,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141712171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:44,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:44,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:44,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039426192] [2024-06-27 18:33:44,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:44,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:44,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:44,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:44,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:44,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:33:44,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 414 transitions, 4757 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:33:44,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:44,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:33:44,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:48,859 INFO L124 PetriNetUnfolderBase]: 9306/14749 cut-off events. [2024-06-27 18:33:48,859 INFO L125 PetriNetUnfolderBase]: For 972901/972903 co-relation queries the response was YES. [2024-06-27 18:33:49,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102285 conditions, 14749 events. 9306/14749 cut-off events. For 972901/972903 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 100491 event pairs, 2958 based on Foata normal form. 2/14430 useless extension candidates. Maximal degree in co-relation 102131. Up to 13119 conditions per place. [2024-06-27 18:33:49,082 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 380 selfloop transitions, 64 changer transitions 0/452 dead transitions. [2024-06-27 18:33:49,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 452 transitions, 6007 flow [2024-06-27 18:33:49,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:49,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:49,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-27 18:33:49,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4661458333333333 [2024-06-27 18:33:49,084 INFO L175 Difference]: Start difference. First operand has 336 places, 414 transitions, 4757 flow. Second operand 8 states and 179 transitions. [2024-06-27 18:33:49,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 452 transitions, 6007 flow [2024-06-27 18:33:51,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 452 transitions, 5922 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 18:33:51,255 INFO L231 Difference]: Finished difference. Result has 340 places, 417 transitions, 4862 flow [2024-06-27 18:33:51,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4672, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4862, PETRI_PLACES=340, PETRI_TRANSITIONS=417} [2024-06-27 18:33:51,256 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 286 predicate places. [2024-06-27 18:33:51,256 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 417 transitions, 4862 flow [2024-06-27 18:33:51,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:33:51,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:51,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:51,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 18:33:51,257 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:33:51,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:51,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1108733042, now seen corresponding path program 2 times [2024-06-27 18:33:51,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:51,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223946128] [2024-06-27 18:33:51,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:51,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:52,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:52,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:52,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223946128] [2024-06-27 18:33:52,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223946128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:52,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:52,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:52,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455987421] [2024-06-27 18:33:52,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:52,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:52,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:52,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:52,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:52,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:33:52,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 417 transitions, 4862 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:33:52,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:52,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:33:52,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:55,968 INFO L124 PetriNetUnfolderBase]: 9357/14791 cut-off events. [2024-06-27 18:33:55,969 INFO L125 PetriNetUnfolderBase]: For 995422/995424 co-relation queries the response was YES. [2024-06-27 18:33:56,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102943 conditions, 14791 events. 9357/14791 cut-off events. For 995422/995424 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 100465 event pairs, 2970 based on Foata normal form. 5/14480 useless extension candidates. Maximal degree in co-relation 102787. Up to 13276 conditions per place. [2024-06-27 18:33:56,226 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 398 selfloop transitions, 51 changer transitions 0/457 dead transitions. [2024-06-27 18:33:56,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 457 transitions, 6114 flow [2024-06-27 18:33:56,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:56,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:56,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-27 18:33:56,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-27 18:33:56,228 INFO L175 Difference]: Start difference. First operand has 340 places, 417 transitions, 4862 flow. Second operand 8 states and 180 transitions. [2024-06-27 18:33:56,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 457 transitions, 6114 flow [2024-06-27 18:33:58,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 457 transitions, 5914 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 18:33:58,565 INFO L231 Difference]: Finished difference. Result has 342 places, 420 transitions, 4814 flow [2024-06-27 18:33:58,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4662, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4814, PETRI_PLACES=342, PETRI_TRANSITIONS=420} [2024-06-27 18:33:58,566 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 288 predicate places. [2024-06-27 18:33:58,566 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 420 transitions, 4814 flow [2024-06-27 18:33:58,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:33:58,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:58,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:58,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 18:33:58,566 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:33:58,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:58,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1538274457, now seen corresponding path program 5 times [2024-06-27 18:33:58,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:58,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736806817] [2024-06-27 18:33:58,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:58,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:59,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:59,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:59,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736806817] [2024-06-27 18:33:59,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736806817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:59,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:59,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:59,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096271901] [2024-06-27 18:33:59,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:59,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:59,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:59,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:59,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:59,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:33:59,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 420 transitions, 4814 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:33:59,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:59,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:33:59,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:03,302 INFO L124 PetriNetUnfolderBase]: 9391/14866 cut-off events. [2024-06-27 18:34:03,303 INFO L125 PetriNetUnfolderBase]: For 1010397/1010399 co-relation queries the response was YES. [2024-06-27 18:34:03,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103223 conditions, 14866 events. 9391/14866 cut-off events. For 1010397/1010399 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 101267 event pairs, 2978 based on Foata normal form. 2/14546 useless extension candidates. Maximal degree in co-relation 103066. Up to 13218 conditions per place. [2024-06-27 18:34:03,503 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 380 selfloop transitions, 70 changer transitions 0/458 dead transitions. [2024-06-27 18:34:03,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 458 transitions, 6070 flow [2024-06-27 18:34:03,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:34:03,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:34:03,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-06-27 18:34:03,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2024-06-27 18:34:03,505 INFO L175 Difference]: Start difference. First operand has 342 places, 420 transitions, 4814 flow. Second operand 8 states and 178 transitions. [2024-06-27 18:34:03,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 458 transitions, 6070 flow [2024-06-27 18:34:05,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 458 transitions, 5929 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 18:34:05,558 INFO L231 Difference]: Finished difference. Result has 344 places, 423 transitions, 4865 flow [2024-06-27 18:34:05,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4673, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4865, PETRI_PLACES=344, PETRI_TRANSITIONS=423} [2024-06-27 18:34:05,559 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 290 predicate places. [2024-06-27 18:34:05,559 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 423 transitions, 4865 flow [2024-06-27 18:34:05,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:34:05,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:05,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:05,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 18:34:05,559 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:34:05,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:05,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1530922807, now seen corresponding path program 6 times [2024-06-27 18:34:05,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:05,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914409540] [2024-06-27 18:34:05,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:05,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:06,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:06,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:06,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914409540] [2024-06-27 18:34:06,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914409540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:06,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:06,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:34:06,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251495617] [2024-06-27 18:34:06,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:06,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:34:06,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:06,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:34:06,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:34:06,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:34:06,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 423 transitions, 4865 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:34:06,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:06,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:34:06,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:10,329 INFO L124 PetriNetUnfolderBase]: 9385/14868 cut-off events. [2024-06-27 18:34:10,330 INFO L125 PetriNetUnfolderBase]: For 1021771/1021773 co-relation queries the response was YES. [2024-06-27 18:34:10,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103129 conditions, 14868 events. 9385/14868 cut-off events. For 1021771/1021773 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 101396 event pairs, 2990 based on Foata normal form. 2/14546 useless extension candidates. Maximal degree in co-relation 102971. Up to 13213 conditions per place. [2024-06-27 18:34:10,525 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 384 selfloop transitions, 66 changer transitions 0/458 dead transitions. [2024-06-27 18:34:10,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 458 transitions, 5913 flow [2024-06-27 18:34:10,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:34:10,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:34:10,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-27 18:34:10,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-27 18:34:10,526 INFO L175 Difference]: Start difference. First operand has 344 places, 423 transitions, 4865 flow. Second operand 8 states and 180 transitions. [2024-06-27 18:34:10,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 458 transitions, 5913 flow [2024-06-27 18:34:12,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 458 transitions, 5743 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-27 18:34:12,379 INFO L231 Difference]: Finished difference. Result has 347 places, 423 transitions, 4833 flow [2024-06-27 18:34:12,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4695, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4833, PETRI_PLACES=347, PETRI_TRANSITIONS=423} [2024-06-27 18:34:12,379 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 293 predicate places. [2024-06-27 18:34:12,379 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 423 transitions, 4833 flow [2024-06-27 18:34:12,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:34:12,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:12,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:12,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 18:34:12,380 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:34:12,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:12,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1101381392, now seen corresponding path program 3 times [2024-06-27 18:34:12,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:12,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284812919] [2024-06-27 18:34:12,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:12,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:13,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:13,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:13,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284812919] [2024-06-27 18:34:13,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284812919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:13,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:13,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:34:13,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484909281] [2024-06-27 18:34:13,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:13,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:34:13,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:13,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:34:13,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:34:13,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:34:13,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 423 transitions, 4833 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:34:13,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:13,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:34:13,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand