./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix038.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix038.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 76401ed0 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/mix038.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix038.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-76401ed-m [2024-06-20 16:19:54,689 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 16:19:54,765 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 16:19:54,770 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 16:19:54,771 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 16:19:54,800 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 16:19:54,801 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 16:19:54,801 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 16:19:54,802 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 16:19:54,805 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 16:19:54,806 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 16:19:54,806 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 16:19:54,807 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 16:19:54,808 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 16:19:54,808 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 16:19:54,809 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 16:19:54,809 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 16:19:54,809 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 16:19:54,810 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 16:19:54,810 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 16:19:54,810 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 16:19:54,811 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 16:19:54,811 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 16:19:54,811 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 16:19:54,812 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 16:19:54,812 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 16:19:54,812 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 16:19:54,813 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 16:19:54,813 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 16:19:54,814 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 16:19:54,815 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 16:19:54,815 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 16:19:54,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 16:19:54,815 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 16:19:54,816 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 16:19:54,830 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 16:19:54,830 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 16:19:54,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 16:19:54,831 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 16:19:54,831 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 16:19:54,831 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 16:19:54,831 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 16:19:54,832 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 16:19:54,832 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 16:19:55,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 16:19:55,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 16:19:55,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 16:19:55,161 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 16:19:55,162 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 16:19:55,163 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix038.opt.i [2024-06-20 16:19:56,232 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 16:19:56,461 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 16:19:56,461 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix038.opt.i [2024-06-20 16:19:56,486 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c494e027/d42fc0b53e32496ea5d1cc616552252d/FLAG39a52330c [2024-06-20 16:19:56,497 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c494e027/d42fc0b53e32496ea5d1cc616552252d [2024-06-20 16:19:56,500 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 16:19:56,500 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 16:19:56,501 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix038.opt.yml/witness.yml [2024-06-20 16:19:56,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 16:19:56,713 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 16:19:56,715 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 16:19:56,715 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 16:19:56,719 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 16:19:56,720 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 04:19:56" (1/2) ... [2024-06-20 16:19:56,721 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7088ba4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:19:56, skipping insertion in model container [2024-06-20 16:19:56,721 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 04:19:56" (1/2) ... [2024-06-20 16:19:56,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@60da1d2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:19:56, skipping insertion in model container [2024-06-20 16:19:56,724 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:19:56" (2/2) ... [2024-06-20 16:19:56,725 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7088ba4d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:19:56, skipping insertion in model container [2024-06-20 16:19:56,725 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:19:56" (2/2) ... [2024-06-20 16:19:56,725 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 16:19:56,822 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 16:19:56,824 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] (((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1))) [2024-06-20 16:19:56,824 INFO L97 edCorrectnessWitness]: Location invariant before [L836-L836] (((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1))) [2024-06-20 16:19:56,824 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1))) [2024-06-20 16:19:56,825 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 16:19:56,825 INFO L106 edCorrectnessWitness]: ghost_update [L834-L834] multithreaded = 1; [2024-06-20 16:19:56,869 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 16:19:57,247 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 16:19:57,260 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 16:19:57,384 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 16:19:57,433 INFO L206 MainTranslator]: Completed translation [2024-06-20 16:19:57,434 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:19:57 WrapperNode [2024-06-20 16:19:57,434 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 16:19:57,436 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 16:19:57,436 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 16:19:57,436 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 16:19:57,442 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 20.06 04:19:57" (1/1) ... [2024-06-20 16:19:57,463 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 20.06 04:19:57" (1/1) ... [2024-06-20 16:19:57,494 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 133 [2024-06-20 16:19:57,495 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 16:19:57,495 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 16:19:57,495 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 16:19:57,496 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 16:19:57,505 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:19:57" (1/1) ... [2024-06-20 16:19:57,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:19:57" (1/1) ... [2024-06-20 16:19:57,508 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:19:57" (1/1) ... [2024-06-20 16:19:57,525 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]. [2024-06-20 16:19:57,525 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:19:57" (1/1) ... [2024-06-20 16:19:57,526 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:19:57" (1/1) ... [2024-06-20 16:19:57,535 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:19:57" (1/1) ... [2024-06-20 16:19:57,540 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:19:57" (1/1) ... [2024-06-20 16:19:57,553 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:19:57" (1/1) ... [2024-06-20 16:19:57,554 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:19:57" (1/1) ... [2024-06-20 16:19:57,557 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 16:19:57,558 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 16:19:57,558 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 16:19:57,558 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 16:19:57,559 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:19:57" (1/1) ... [2024-06-20 16:19:57,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 16:19:57,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 16:19:57,618 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) [2024-06-20 16:19:57,679 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 [2024-06-20 16:19:57,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-20 16:19:57,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 16:19:57,705 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-20 16:19:57,705 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-20 16:19:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-20 16:19:57,706 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-20 16:19:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-20 16:19:57,706 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-20 16:19:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 16:19:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-20 16:19:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 16:19:57,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 16:19:57,708 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-20 16:19:57,873 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 16:19:57,875 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 16:19:58,241 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 16:19:58,241 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 16:19:58,406 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 16:19:58,407 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-20 16:19:58,407 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 04:19:58 BoogieIcfgContainer [2024-06-20 16:19:58,408 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 16:19:58,411 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 16:19:58,411 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 16:19:58,413 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 16:19:58,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 04:19:56" (1/4) ... [2024-06-20 16:19:58,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65390f39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 04:19:58, skipping insertion in model container [2024-06-20 16:19:58,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:19:56" (2/4) ... [2024-06-20 16:19:58,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65390f39 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 04:19:58, skipping insertion in model container [2024-06-20 16:19:58,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:19:57" (3/4) ... [2024-06-20 16:19:58,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65390f39 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 04:19:58, skipping insertion in model container [2024-06-20 16:19:58,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 04:19:58" (4/4) ... [2024-06-20 16:19:58,417 INFO L112 eAbstractionObserver]: Analyzing ICFG mix038.opt.i [2024-06-20 16:19:58,433 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 16:19:58,433 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-20 16:19:58,433 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 16:19:58,482 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-20 16:19:58,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 42 transitions, 96 flow [2024-06-20 16:19:58,579 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2024-06-20 16:19:58,580 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 16:19:58,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 39 events. 0/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-20 16:19:58,583 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 42 transitions, 96 flow [2024-06-20 16:19:58,587 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2024-06-20 16:19:58,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 16:19:58,604 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;@4ddaac96, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 16:19:58,604 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-20 16:19:58,609 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 16:19:58,610 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-20 16:19:58,610 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 16:19:58,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:19:58,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-20 16:19:58,611 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:19:58,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:19:58,616 INFO L85 PathProgramCache]: Analyzing trace with hash 359771266, now seen corresponding path program 1 times [2024-06-20 16:19:58,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:19:58,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491099255] [2024-06-20 16:19:58,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:19:58,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:19:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:19:59,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:19:59,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:19:59,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491099255] [2024-06-20 16:19:59,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491099255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:19:59,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:19:59,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 16:19:59,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137378452] [2024-06-20 16:19:59,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:19:59,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 16:19:59,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:19:59,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 16:19:59,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 16:19:59,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-20 16:19:59,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:59,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:19:59,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-20 16:19:59,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:00,303 INFO L124 PetriNetUnfolderBase]: 1116/1816 cut-off events. [2024-06-20 16:20:00,304 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-20 16:20:00,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3567 conditions, 1816 events. 1116/1816 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 9229 event pairs, 765 based on Foata normal form. 1/1752 useless extension candidates. Maximal degree in co-relation 3555. Up to 1676 conditions per place. [2024-06-20 16:20:00,322 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 31 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-06-20 16:20:00,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 171 flow [2024-06-20 16:20:00,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 16:20:00,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 16:20:00,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-20 16:20:00,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2024-06-20 16:20:00,336 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 3 states and 80 transitions. [2024-06-20 16:20:00,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 171 flow [2024-06-20 16:20:00,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 43 transitions, 166 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-20 16:20:00,342 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 102 flow [2024-06-20 16:20:00,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-06-20 16:20:00,346 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-06-20 16:20:00,346 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 102 flow [2024-06-20 16:20:00,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:00,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:00,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:00,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 16:20:00,347 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:00,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:00,348 INFO L85 PathProgramCache]: Analyzing trace with hash 2142835425, now seen corresponding path program 1 times [2024-06-20 16:20:00,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:00,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791853251] [2024-06-20 16:20:00,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:00,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:01,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:01,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:01,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791853251] [2024-06-20 16:20:01,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791853251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:01,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:01,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 16:20:01,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360371687] [2024-06-20 16:20:01,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:01,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 16:20:01,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:01,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 16:20:01,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-20 16:20:01,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-06-20 16:20:01,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:01,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:01,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-06-20 16:20:01,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:01,390 INFO L124 PetriNetUnfolderBase]: 1280/2007 cut-off events. [2024-06-20 16:20:01,390 INFO L125 PetriNetUnfolderBase]: For 383/383 co-relation queries the response was YES. [2024-06-20 16:20:01,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4528 conditions, 2007 events. 1280/2007 cut-off events. For 383/383 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9937 event pairs, 750 based on Foata normal form. 3/1978 useless extension candidates. Maximal degree in co-relation 4516. Up to 1897 conditions per place. [2024-06-20 16:20:01,402 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 39 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2024-06-20 16:20:01,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 240 flow [2024-06-20 16:20:01,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 16:20:01,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 16:20:01,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-06-20 16:20:01,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6011904761904762 [2024-06-20 16:20:01,405 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 102 flow. Second operand 4 states and 101 transitions. [2024-06-20 16:20:01,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 240 flow [2024-06-20 16:20:01,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-20 16:20:01,407 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 138 flow [2024-06-20 16:20:01,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-20 16:20:01,408 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-06-20 16:20:01,408 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 138 flow [2024-06-20 16:20:01,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:01,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:01,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:01,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 16:20:01,409 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:01,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:01,410 INFO L85 PathProgramCache]: Analyzing trace with hash 2003389811, now seen corresponding path program 1 times [2024-06-20 16:20:01,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:01,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96760353] [2024-06-20 16:20:01,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:01,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:02,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:02,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:02,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96760353] [2024-06-20 16:20:02,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96760353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:02,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:02,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 16:20:02,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14582850] [2024-06-20 16:20:02,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:02,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 16:20:02,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:02,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 16:20:02,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-20 16:20:02,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-06-20 16:20:02,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:02,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:02,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-06-20 16:20:02,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:02,573 INFO L124 PetriNetUnfolderBase]: 1302/2076 cut-off events. [2024-06-20 16:20:02,574 INFO L125 PetriNetUnfolderBase]: For 1126/1126 co-relation queries the response was YES. [2024-06-20 16:20:02,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5163 conditions, 2076 events. 1302/2076 cut-off events. For 1126/1126 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 10481 event pairs, 470 based on Foata normal form. 7/2070 useless extension candidates. Maximal degree in co-relation 5149. Up to 1800 conditions per place. [2024-06-20 16:20:02,589 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 55 selfloop transitions, 16 changer transitions 0/78 dead transitions. [2024-06-20 16:20:02,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 78 transitions, 406 flow [2024-06-20 16:20:02,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 16:20:02,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 16:20:02,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-06-20 16:20:02,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-06-20 16:20:02,592 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 138 flow. Second operand 5 states and 135 transitions. [2024-06-20 16:20:02,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 78 transitions, 406 flow [2024-06-20 16:20:02,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 78 transitions, 392 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-20 16:20:02,600 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 237 flow [2024-06-20 16:20:02,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2024-06-20 16:20:02,601 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2024-06-20 16:20:02,602 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 237 flow [2024-06-20 16:20:02,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:02,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:02,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:02,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 16:20:02,603 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:02,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:02,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1967601872, now seen corresponding path program 1 times [2024-06-20 16:20:02,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:02,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688045119] [2024-06-20 16:20:02,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:02,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:03,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:03,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:03,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688045119] [2024-06-20 16:20:03,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688045119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:03,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:03,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 16:20:03,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169260934] [2024-06-20 16:20:03,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:03,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 16:20:03,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:03,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 16:20:03,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-20 16:20:03,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-06-20 16:20:03,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:03,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:03,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-06-20 16:20:03,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:04,093 INFO L124 PetriNetUnfolderBase]: 1384/2220 cut-off events. [2024-06-20 16:20:04,094 INFO L125 PetriNetUnfolderBase]: For 2892/2892 co-relation queries the response was YES. [2024-06-20 16:20:04,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6579 conditions, 2220 events. 1384/2220 cut-off events. For 2892/2892 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11470 event pairs, 321 based on Foata normal form. 26/2231 useless extension candidates. Maximal degree in co-relation 6562. Up to 1764 conditions per place. [2024-06-20 16:20:04,109 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 63 selfloop transitions, 18 changer transitions 0/88 dead transitions. [2024-06-20 16:20:04,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 88 transitions, 523 flow [2024-06-20 16:20:04,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:20:04,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:20:04,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-06-20 16:20:04,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.626984126984127 [2024-06-20 16:20:04,111 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 237 flow. Second operand 6 states and 158 transitions. [2024-06-20 16:20:04,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 88 transitions, 523 flow [2024-06-20 16:20:04,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 88 transitions, 515 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-20 16:20:04,116 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 285 flow [2024-06-20 16:20:04,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=285, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-20 16:20:04,117 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2024-06-20 16:20:04,117 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 285 flow [2024-06-20 16:20:04,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:04,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:04,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:04,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-20 16:20:04,118 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:04,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:04,119 INFO L85 PathProgramCache]: Analyzing trace with hash 529676278, now seen corresponding path program 1 times [2024-06-20 16:20:04,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:04,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651345869] [2024-06-20 16:20:04,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:04,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:04,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:04,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:04,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651345869] [2024-06-20 16:20:04,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651345869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:04,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:04,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 16:20:04,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927692020] [2024-06-20 16:20:04,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:04,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 16:20:04,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:04,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 16:20:04,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-20 16:20:05,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-20 16:20:05,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 285 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:05,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:05,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-20 16:20:05,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:05,568 INFO L124 PetriNetUnfolderBase]: 1204/2027 cut-off events. [2024-06-20 16:20:05,569 INFO L125 PetriNetUnfolderBase]: For 3655/3655 co-relation queries the response was YES. [2024-06-20 16:20:05,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6360 conditions, 2027 events. 1204/2027 cut-off events. For 3655/3655 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 10900 event pairs, 447 based on Foata normal form. 4/2022 useless extension candidates. Maximal degree in co-relation 6339. Up to 1814 conditions per place. [2024-06-20 16:20:05,585 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 48 selfloop transitions, 8 changer transitions 0/63 dead transitions. [2024-06-20 16:20:05,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 63 transitions, 427 flow [2024-06-20 16:20:05,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 16:20:05,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 16:20:05,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-06-20 16:20:05,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-20 16:20:05,588 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 285 flow. Second operand 5 states and 105 transitions. [2024-06-20 16:20:05,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 63 transitions, 427 flow [2024-06-20 16:20:05,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 383 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-20 16:20:05,597 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 265 flow [2024-06-20 16:20:05,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=265, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-06-20 16:20:05,600 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-06-20 16:20:05,600 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 265 flow [2024-06-20 16:20:05,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:05,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:05,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:05,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-20 16:20:05,605 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:05,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:05,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1948773619, now seen corresponding path program 1 times [2024-06-20 16:20:05,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:05,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334445610] [2024-06-20 16:20:05,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:05,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:06,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:06,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:06,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334445610] [2024-06-20 16:20:06,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334445610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:06,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:06,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:20:06,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626581643] [2024-06-20 16:20:06,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:06,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:20:06,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:06,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:20:06,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:20:06,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:20:06,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 265 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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) [2024-06-20 16:20:06,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:06,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:20:06,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:07,374 INFO L124 PetriNetUnfolderBase]: 1386/2222 cut-off events. [2024-06-20 16:20:07,374 INFO L125 PetriNetUnfolderBase]: For 4743/4743 co-relation queries the response was YES. [2024-06-20 16:20:07,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7077 conditions, 2222 events. 1386/2222 cut-off events. For 4743/4743 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 11436 event pairs, 459 based on Foata normal form. 8/2214 useless extension candidates. Maximal degree in co-relation 7054. Up to 1943 conditions per place. [2024-06-20 16:20:07,392 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 52 selfloop transitions, 19 changer transitions 0/77 dead transitions. [2024-06-20 16:20:07,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 77 transitions, 505 flow [2024-06-20 16:20:07,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:20:07,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:20:07,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-20 16:20:07,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2024-06-20 16:20:07,395 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 265 flow. Second operand 6 states and 130 transitions. [2024-06-20 16:20:07,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 77 transitions, 505 flow [2024-06-20 16:20:07,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 77 transitions, 483 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-20 16:20:07,402 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 315 flow [2024-06-20 16:20:07,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=315, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-06-20 16:20:07,404 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2024-06-20 16:20:07,405 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 315 flow [2024-06-20 16:20:07,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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) [2024-06-20 16:20:07,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:07,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:07,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-20 16:20:07,406 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:07,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:07,406 INFO L85 PathProgramCache]: Analyzing trace with hash -2082191787, now seen corresponding path program 2 times [2024-06-20 16:20:07,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:07,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807614086] [2024-06-20 16:20:07,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:07,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:08,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:08,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:08,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807614086] [2024-06-20 16:20:08,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807614086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:08,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:08,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:20:08,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474321334] [2024-06-20 16:20:08,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:08,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:20:08,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:08,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:20:08,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:20:08,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:20:08,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 315 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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) [2024-06-20 16:20:08,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:08,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:20:08,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:09,064 INFO L124 PetriNetUnfolderBase]: 1354/2151 cut-off events. [2024-06-20 16:20:09,065 INFO L125 PetriNetUnfolderBase]: For 5814/5818 co-relation queries the response was YES. [2024-06-20 16:20:09,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7152 conditions, 2151 events. 1354/2151 cut-off events. For 5814/5818 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10816 event pairs, 469 based on Foata normal form. 5/2136 useless extension candidates. Maximal degree in co-relation 7129. Up to 1895 conditions per place. [2024-06-20 16:20:09,091 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 46 selfloop transitions, 20 changer transitions 0/72 dead transitions. [2024-06-20 16:20:09,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 72 transitions, 491 flow [2024-06-20 16:20:09,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:20:09,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:20:09,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-06-20 16:20:09,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-20 16:20:09,093 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 315 flow. Second operand 6 states and 126 transitions. [2024-06-20 16:20:09,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 72 transitions, 491 flow [2024-06-20 16:20:09,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 72 transitions, 462 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-20 16:20:09,101 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 334 flow [2024-06-20 16:20:09,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=334, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2024-06-20 16:20:09,103 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2024-06-20 16:20:09,103 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 334 flow [2024-06-20 16:20:09,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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) [2024-06-20 16:20:09,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:09,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:09,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-20 16:20:09,104 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:09,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:09,104 INFO L85 PathProgramCache]: Analyzing trace with hash -400245517, now seen corresponding path program 1 times [2024-06-20 16:20:09,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:09,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838613077] [2024-06-20 16:20:09,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:09,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:10,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:10,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:10,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838613077] [2024-06-20 16:20:10,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838613077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:10,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:10,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:20:10,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587915141] [2024-06-20 16:20:10,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:10,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:20:10,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:10,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:20:10,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:20:10,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-20 16:20:10,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 334 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:10,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:10,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-20 16:20:10,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:11,201 INFO L124 PetriNetUnfolderBase]: 1176/1972 cut-off events. [2024-06-20 16:20:11,201 INFO L125 PetriNetUnfolderBase]: For 6120/6120 co-relation queries the response was YES. [2024-06-20 16:20:11,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6560 conditions, 1972 events. 1176/1972 cut-off events. For 6120/6120 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 10431 event pairs, 406 based on Foata normal form. 4/1961 useless extension candidates. Maximal degree in co-relation 6536. Up to 1742 conditions per place. [2024-06-20 16:20:11,213 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 59 selfloop transitions, 13 changer transitions 0/79 dead transitions. [2024-06-20 16:20:11,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 79 transitions, 565 flow [2024-06-20 16:20:11,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:20:11,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:20:11,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-20 16:20:11,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2024-06-20 16:20:11,219 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 334 flow. Second operand 7 states and 142 transitions. [2024-06-20 16:20:11,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 79 transitions, 565 flow [2024-06-20 16:20:11,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 79 transitions, 495 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-20 16:20:11,226 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 344 flow [2024-06-20 16:20:11,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=344, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-06-20 16:20:11,228 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-06-20 16:20:11,228 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 344 flow [2024-06-20 16:20:11,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:11,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:11,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:11,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-20 16:20:11,229 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:11,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:11,230 INFO L85 PathProgramCache]: Analyzing trace with hash 275117078, now seen corresponding path program 1 times [2024-06-20 16:20:11,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:11,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149063332] [2024-06-20 16:20:11,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:11,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:12,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:12,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:12,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149063332] [2024-06-20 16:20:12,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149063332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:12,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:12,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 16:20:12,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95305937] [2024-06-20 16:20:12,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:12,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 16:20:12,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:12,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 16:20:12,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-20 16:20:12,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-20 16:20:12,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 344 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:12,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:12,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-20 16:20:12,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:12,579 INFO L124 PetriNetUnfolderBase]: 1173/1968 cut-off events. [2024-06-20 16:20:12,579 INFO L125 PetriNetUnfolderBase]: For 6996/6996 co-relation queries the response was YES. [2024-06-20 16:20:12,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6808 conditions, 1968 events. 1173/1968 cut-off events. For 6996/6996 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 10392 event pairs, 420 based on Foata normal form. 1/1954 useless extension candidates. Maximal degree in co-relation 6782. Up to 1771 conditions per place. [2024-06-20 16:20:12,590 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 55 selfloop transitions, 8 changer transitions 0/70 dead transitions. [2024-06-20 16:20:12,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 70 transitions, 510 flow [2024-06-20 16:20:12,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 16:20:12,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 16:20:12,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2024-06-20 16:20:12,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-20 16:20:12,592 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 344 flow. Second operand 5 states and 100 transitions. [2024-06-20 16:20:12,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 70 transitions, 510 flow [2024-06-20 16:20:12,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 70 transitions, 477 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-20 16:20:12,601 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 359 flow [2024-06-20 16:20:12,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=359, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2024-06-20 16:20:12,602 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places. [2024-06-20 16:20:12,602 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 359 flow [2024-06-20 16:20:12,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:12,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:12,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:12,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-20 16:20:12,603 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:12,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:12,604 INFO L85 PathProgramCache]: Analyzing trace with hash -61304236, now seen corresponding path program 1 times [2024-06-20 16:20:12,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:12,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226155449] [2024-06-20 16:20:12,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:12,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:13,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:13,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:13,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226155449] [2024-06-20 16:20:13,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226155449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:13,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:13,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:20:13,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044143111] [2024-06-20 16:20:13,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:13,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:20:13,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:13,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:20:13,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:20:13,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:20:13,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 359 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 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) [2024-06-20 16:20:13,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:13,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:20:13,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:14,093 INFO L124 PetriNetUnfolderBase]: 1340/2159 cut-off events. [2024-06-20 16:20:14,093 INFO L125 PetriNetUnfolderBase]: For 9934/9934 co-relation queries the response was YES. [2024-06-20 16:20:14,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7958 conditions, 2159 events. 1340/2159 cut-off events. For 9934/9934 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 11065 event pairs, 492 based on Foata normal form. 1/2158 useless extension candidates. Maximal degree in co-relation 7931. Up to 2009 conditions per place. [2024-06-20 16:20:14,107 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 57 selfloop transitions, 11 changer transitions 0/74 dead transitions. [2024-06-20 16:20:14,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 74 transitions, 541 flow [2024-06-20 16:20:14,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:20:14,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:20:14,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-20 16:20:14,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-20 16:20:14,109 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 359 flow. Second operand 6 states and 111 transitions. [2024-06-20 16:20:14,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 74 transitions, 541 flow [2024-06-20 16:20:14,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 74 transitions, 515 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-20 16:20:14,118 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 391 flow [2024-06-20 16:20:14,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=391, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-06-20 16:20:14,118 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2024-06-20 16:20:14,119 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 391 flow [2024-06-20 16:20:14,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 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) [2024-06-20 16:20:14,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:14,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:14,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-20 16:20:14,120 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:14,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:14,120 INFO L85 PathProgramCache]: Analyzing trace with hash -213503600, now seen corresponding path program 1 times [2024-06-20 16:20:14,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:14,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175786545] [2024-06-20 16:20:14,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:14,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:15,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:15,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:15,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175786545] [2024-06-20 16:20:15,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175786545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:15,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:15,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:20:15,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117499429] [2024-06-20 16:20:15,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:15,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:20:15,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:15,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:20:15,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:20:15,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:20:15,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 391 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:15,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:15,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:20:15,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:15,917 INFO L124 PetriNetUnfolderBase]: 1543/2451 cut-off events. [2024-06-20 16:20:15,918 INFO L125 PetriNetUnfolderBase]: For 16141/16141 co-relation queries the response was YES. [2024-06-20 16:20:15,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9796 conditions, 2451 events. 1543/2451 cut-off events. For 16141/16141 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12708 event pairs, 357 based on Foata normal form. 16/2458 useless extension candidates. Maximal degree in co-relation 9768. Up to 1728 conditions per place. [2024-06-20 16:20:15,936 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 73 selfloop transitions, 22 changer transitions 0/102 dead transitions. [2024-06-20 16:20:15,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 102 transitions, 739 flow [2024-06-20 16:20:15,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:20:15,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:20:15,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-20 16:20:15,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2024-06-20 16:20:15,938 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 391 flow. Second operand 7 states and 153 transitions. [2024-06-20 16:20:15,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 102 transitions, 739 flow [2024-06-20 16:20:15,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 102 transitions, 703 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-20 16:20:15,952 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 431 flow [2024-06-20 16:20:15,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=431, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2024-06-20 16:20:15,952 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2024-06-20 16:20:15,953 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 431 flow [2024-06-20 16:20:15,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:15,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:15,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:15,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-20 16:20:15,953 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:15,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:15,954 INFO L85 PathProgramCache]: Analyzing trace with hash 724329608, now seen corresponding path program 2 times [2024-06-20 16:20:15,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:15,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741148337] [2024-06-20 16:20:15,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:15,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:16,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:16,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:16,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741148337] [2024-06-20 16:20:16,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741148337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:16,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:16,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:20:16,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186894827] [2024-06-20 16:20:16,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:16,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:20:16,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:16,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:20:16,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:20:17,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:20:17,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 431 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:17,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:17,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:20:17,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:17,690 INFO L124 PetriNetUnfolderBase]: 1581/2534 cut-off events. [2024-06-20 16:20:17,690 INFO L125 PetriNetUnfolderBase]: For 19060/19060 co-relation queries the response was YES. [2024-06-20 16:20:17,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10381 conditions, 2534 events. 1581/2534 cut-off events. For 19060/19060 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 13390 event pairs, 510 based on Foata normal form. 24/2553 useless extension candidates. Maximal degree in co-relation 10352. Up to 2107 conditions per place. [2024-06-20 16:20:17,708 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 68 selfloop transitions, 23 changer transitions 0/98 dead transitions. [2024-06-20 16:20:17,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 98 transitions, 713 flow [2024-06-20 16:20:17,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:20:17,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:20:17,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-20 16:20:17,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-20 16:20:17,710 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 431 flow. Second operand 7 states and 150 transitions. [2024-06-20 16:20:17,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 98 transitions, 713 flow [2024-06-20 16:20:17,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 98 transitions, 683 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-20 16:20:17,728 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 479 flow [2024-06-20 16:20:17,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=479, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2024-06-20 16:20:17,729 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 32 predicate places. [2024-06-20 16:20:17,729 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 479 flow [2024-06-20 16:20:17,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:17,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:17,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:17,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-20 16:20:17,730 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:17,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:17,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1911872075, now seen corresponding path program 1 times [2024-06-20 16:20:17,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:17,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511571374] [2024-06-20 16:20:17,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:17,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:18,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:18,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:18,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511571374] [2024-06-20 16:20:18,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511571374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:18,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:18,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:20:18,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596390928] [2024-06-20 16:20:18,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:18,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:20:18,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:18,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:20:18,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:20:18,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:20:18,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 479 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 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) [2024-06-20 16:20:18,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:18,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:20:18,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:19,182 INFO L124 PetriNetUnfolderBase]: 1616/2586 cut-off events. [2024-06-20 16:20:19,182 INFO L125 PetriNetUnfolderBase]: For 20301/20301 co-relation queries the response was YES. [2024-06-20 16:20:19,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10972 conditions, 2586 events. 1616/2586 cut-off events. For 20301/20301 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 13626 event pairs, 587 based on Foata normal form. 1/2585 useless extension candidates. Maximal degree in co-relation 10941. Up to 2404 conditions per place. [2024-06-20 16:20:19,202 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 69 selfloop transitions, 11 changer transitions 0/87 dead transitions. [2024-06-20 16:20:19,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 87 transitions, 703 flow [2024-06-20 16:20:19,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:20:19,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:20:19,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-06-20 16:20:19,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-20 16:20:19,204 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 479 flow. Second operand 6 states and 117 transitions. [2024-06-20 16:20:19,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 87 transitions, 703 flow [2024-06-20 16:20:19,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 87 transitions, 649 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-20 16:20:19,224 INFO L231 Difference]: Finished difference. Result has 76 places, 72 transitions, 485 flow [2024-06-20 16:20:19,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=485, PETRI_PLACES=76, PETRI_TRANSITIONS=72} [2024-06-20 16:20:19,225 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 33 predicate places. [2024-06-20 16:20:19,226 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 72 transitions, 485 flow [2024-06-20 16:20:19,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 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) [2024-06-20 16:20:19,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:19,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:19,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-20 16:20:19,226 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:19,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:19,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1086757430, now seen corresponding path program 1 times [2024-06-20 16:20:19,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:19,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730916562] [2024-06-20 16:20:19,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:19,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:20,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:20,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:20,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730916562] [2024-06-20 16:20:20,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730916562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:20,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:20,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:20:20,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566399348] [2024-06-20 16:20:20,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:20,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:20:20,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:20,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:20:20,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:20:20,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:20:20,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 72 transitions, 485 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:20,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:20,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:20:20,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:21,287 INFO L124 PetriNetUnfolderBase]: 1644/2612 cut-off events. [2024-06-20 16:20:21,287 INFO L125 PetriNetUnfolderBase]: For 23320/23324 co-relation queries the response was YES. [2024-06-20 16:20:21,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11437 conditions, 2612 events. 1644/2612 cut-off events. For 23320/23324 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 13634 event pairs, 546 based on Foata normal form. 5/2608 useless extension candidates. Maximal degree in co-relation 11405. Up to 2298 conditions per place. [2024-06-20 16:20:21,306 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 69 selfloop transitions, 28 changer transitions 0/104 dead transitions. [2024-06-20 16:20:21,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 104 transitions, 798 flow [2024-06-20 16:20:21,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:20:21,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:20:21,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-20 16:20:21,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-20 16:20:21,308 INFO L175 Difference]: Start difference. First operand has 76 places, 72 transitions, 485 flow. Second operand 8 states and 162 transitions. [2024-06-20 16:20:21,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 104 transitions, 798 flow [2024-06-20 16:20:21,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 104 transitions, 760 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-20 16:20:21,328 INFO L231 Difference]: Finished difference. Result has 81 places, 78 transitions, 573 flow [2024-06-20 16:20:21,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=573, PETRI_PLACES=81, PETRI_TRANSITIONS=78} [2024-06-20 16:20:21,329 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2024-06-20 16:20:21,329 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 78 transitions, 573 flow [2024-06-20 16:20:21,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:21,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:21,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:21,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-20 16:20:21,329 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:21,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:21,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1080501320, now seen corresponding path program 2 times [2024-06-20 16:20:21,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:21,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718617102] [2024-06-20 16:20:21,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:21,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:22,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:22,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:22,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718617102] [2024-06-20 16:20:22,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718617102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:22,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:22,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:20:22,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370892674] [2024-06-20 16:20:22,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:22,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:20:22,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:22,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:20:22,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:20:22,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:20:22,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 78 transitions, 573 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:22,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:22,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:20:22,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:23,390 INFO L124 PetriNetUnfolderBase]: 1636/2600 cut-off events. [2024-06-20 16:20:23,390 INFO L125 PetriNetUnfolderBase]: For 26782/26786 co-relation queries the response was YES. [2024-06-20 16:20:23,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11960 conditions, 2600 events. 1636/2600 cut-off events. For 26782/26786 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 13558 event pairs, 544 based on Foata normal form. 5/2596 useless extension candidates. Maximal degree in co-relation 11926. Up to 2286 conditions per place. [2024-06-20 16:20:23,406 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 70 selfloop transitions, 34 changer transitions 0/111 dead transitions. [2024-06-20 16:20:23,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 111 transitions, 932 flow [2024-06-20 16:20:23,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:20:23,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:20:23,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-20 16:20:23,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-20 16:20:23,408 INFO L175 Difference]: Start difference. First operand has 81 places, 78 transitions, 573 flow. Second operand 8 states and 162 transitions. [2024-06-20 16:20:23,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 111 transitions, 932 flow [2024-06-20 16:20:23,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 111 transitions, 849 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-20 16:20:23,433 INFO L231 Difference]: Finished difference. Result has 85 places, 86 transitions, 668 flow [2024-06-20 16:20:23,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=668, PETRI_PLACES=85, PETRI_TRANSITIONS=86} [2024-06-20 16:20:23,434 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2024-06-20 16:20:23,434 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 86 transitions, 668 flow [2024-06-20 16:20:23,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:23,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:23,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:23,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-20 16:20:23,435 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:23,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:23,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1911128082, now seen corresponding path program 3 times [2024-06-20 16:20:23,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:23,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374961017] [2024-06-20 16:20:23,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:23,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:24,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:24,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:24,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374961017] [2024-06-20 16:20:24,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374961017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:24,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:24,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:20:24,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577614265] [2024-06-20 16:20:24,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:24,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:20:24,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:24,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:20:24,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:20:24,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:20:24,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 86 transitions, 668 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:24,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:24,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:20:24,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:25,484 INFO L124 PetriNetUnfolderBase]: 1669/2669 cut-off events. [2024-06-20 16:20:25,484 INFO L125 PetriNetUnfolderBase]: For 30151/30155 co-relation queries the response was YES. [2024-06-20 16:20:25,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12524 conditions, 2669 events. 1669/2669 cut-off events. For 30151/30155 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 14123 event pairs, 449 based on Foata normal form. 5/2665 useless extension candidates. Maximal degree in co-relation 12488. Up to 2176 conditions per place. [2024-06-20 16:20:25,502 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 70 selfloop transitions, 41 changer transitions 0/118 dead transitions. [2024-06-20 16:20:25,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 118 transitions, 1006 flow [2024-06-20 16:20:25,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:20:25,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:20:25,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-20 16:20:25,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-06-20 16:20:25,504 INFO L175 Difference]: Start difference. First operand has 85 places, 86 transitions, 668 flow. Second operand 8 states and 166 transitions. [2024-06-20 16:20:25,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 118 transitions, 1006 flow [2024-06-20 16:20:25,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 118 transitions, 942 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-20 16:20:25,538 INFO L231 Difference]: Finished difference. Result has 91 places, 89 transitions, 750 flow [2024-06-20 16:20:25,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=750, PETRI_PLACES=91, PETRI_TRANSITIONS=89} [2024-06-20 16:20:25,539 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2024-06-20 16:20:25,539 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 89 transitions, 750 flow [2024-06-20 16:20:25,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:25,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:25,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:25,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-20 16:20:25,540 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:25,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:25,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1900444235, now seen corresponding path program 2 times [2024-06-20 16:20:25,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:25,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250090645] [2024-06-20 16:20:25,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:25,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:26,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:26,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:26,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250090645] [2024-06-20 16:20:26,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250090645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:26,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:26,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:20:26,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018567489] [2024-06-20 16:20:26,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:26,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:20:26,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:26,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:20:26,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:20:26,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:20:26,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 89 transitions, 750 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 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) [2024-06-20 16:20:26,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:26,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:20:26,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:26,869 INFO L124 PetriNetUnfolderBase]: 1666/2684 cut-off events. [2024-06-20 16:20:26,869 INFO L125 PetriNetUnfolderBase]: For 33110/33117 co-relation queries the response was YES. [2024-06-20 16:20:26,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12821 conditions, 2684 events. 1666/2684 cut-off events. For 33110/33117 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 14312 event pairs, 548 based on Foata normal form. 7/2688 useless extension candidates. Maximal degree in co-relation 12783. Up to 2484 conditions per place. [2024-06-20 16:20:26,888 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 78 selfloop transitions, 16 changer transitions 0/101 dead transitions. [2024-06-20 16:20:26,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 101 transitions, 998 flow [2024-06-20 16:20:26,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:20:26,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:20:26,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-20 16:20:26,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44841269841269843 [2024-06-20 16:20:26,890 INFO L175 Difference]: Start difference. First operand has 91 places, 89 transitions, 750 flow. Second operand 6 states and 113 transitions. [2024-06-20 16:20:26,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 101 transitions, 998 flow [2024-06-20 16:20:26,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 101 transitions, 908 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-20 16:20:26,930 INFO L231 Difference]: Finished difference. Result has 92 places, 92 transitions, 742 flow [2024-06-20 16:20:26,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=742, PETRI_PLACES=92, PETRI_TRANSITIONS=92} [2024-06-20 16:20:26,930 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 49 predicate places. [2024-06-20 16:20:26,930 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 92 transitions, 742 flow [2024-06-20 16:20:26,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 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) [2024-06-20 16:20:26,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:26,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:26,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-20 16:20:26,931 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:26,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:26,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1906152203, now seen corresponding path program 1 times [2024-06-20 16:20:26,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:26,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461697019] [2024-06-20 16:20:26,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:26,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:27,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:27,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:27,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461697019] [2024-06-20 16:20:27,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461697019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:27,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:27,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:20:27,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120439573] [2024-06-20 16:20:27,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:27,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:20:27,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:27,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:20:27,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:20:27,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-20 16:20:27,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 92 transitions, 742 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) [2024-06-20 16:20:27,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:27,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-20 16:20:27,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:28,249 INFO L124 PetriNetUnfolderBase]: 1506/2503 cut-off events. [2024-06-20 16:20:28,250 INFO L125 PetriNetUnfolderBase]: For 31762/31762 co-relation queries the response was YES. [2024-06-20 16:20:28,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11859 conditions, 2503 events. 1506/2503 cut-off events. For 31762/31762 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 13700 event pairs, 473 based on Foata normal form. 2/2503 useless extension candidates. Maximal degree in co-relation 11820. Up to 2262 conditions per place. [2024-06-20 16:20:28,263 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 89 selfloop transitions, 11 changer transitions 0/108 dead transitions. [2024-06-20 16:20:28,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 108 transitions, 1002 flow [2024-06-20 16:20:28,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:20:28,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:20:28,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-20 16:20:28,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-20 16:20:28,265 INFO L175 Difference]: Start difference. First operand has 92 places, 92 transitions, 742 flow. Second operand 6 states and 120 transitions. [2024-06-20 16:20:28,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 108 transitions, 1002 flow [2024-06-20 16:20:28,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 108 transitions, 942 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-20 16:20:28,302 INFO L231 Difference]: Finished difference. Result has 94 places, 95 transitions, 740 flow [2024-06-20 16:20:28,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=740, PETRI_PLACES=94, PETRI_TRANSITIONS=95} [2024-06-20 16:20:28,303 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 51 predicate places. [2024-06-20 16:20:28,303 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 95 transitions, 740 flow [2024-06-20 16:20:28,303 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) [2024-06-20 16:20:28,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:28,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:28,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-20 16:20:28,304 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:28,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:28,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1900438283, now seen corresponding path program 2 times [2024-06-20 16:20:28,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:28,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715591521] [2024-06-20 16:20:28,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:28,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:29,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:29,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:29,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715591521] [2024-06-20 16:20:29,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715591521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:29,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:29,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:20:29,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941013028] [2024-06-20 16:20:29,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:29,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:20:29,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:29,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:20:29,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:20:29,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-20 16:20:29,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 95 transitions, 740 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) [2024-06-20 16:20:29,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:29,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-20 16:20:29,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:29,535 INFO L124 PetriNetUnfolderBase]: 1508/2509 cut-off events. [2024-06-20 16:20:29,536 INFO L125 PetriNetUnfolderBase]: For 34798/34801 co-relation queries the response was YES. [2024-06-20 16:20:29,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12272 conditions, 2509 events. 1508/2509 cut-off events. For 34798/34801 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 13756 event pairs, 477 based on Foata normal form. 4/2510 useless extension candidates. Maximal degree in co-relation 12232. Up to 2256 conditions per place. [2024-06-20 16:20:29,551 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 85 selfloop transitions, 16 changer transitions 0/109 dead transitions. [2024-06-20 16:20:29,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 109 transitions, 1006 flow [2024-06-20 16:20:29,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:20:29,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:20:29,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-20 16:20:29,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-20 16:20:29,553 INFO L175 Difference]: Start difference. First operand has 94 places, 95 transitions, 740 flow. Second operand 6 states and 120 transitions. [2024-06-20 16:20:29,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 109 transitions, 1006 flow [2024-06-20 16:20:29,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 109 transitions, 970 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-20 16:20:29,582 INFO L231 Difference]: Finished difference. Result has 96 places, 98 transitions, 778 flow [2024-06-20 16:20:29,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=778, PETRI_PLACES=96, PETRI_TRANSITIONS=98} [2024-06-20 16:20:29,583 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 53 predicate places. [2024-06-20 16:20:29,583 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 98 transitions, 778 flow [2024-06-20 16:20:29,583 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) [2024-06-20 16:20:29,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:29,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:29,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-20 16:20:29,584 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:29,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:29,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1900430347, now seen corresponding path program 1 times [2024-06-20 16:20:29,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:29,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408898630] [2024-06-20 16:20:29,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:29,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:30,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:30,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:30,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408898630] [2024-06-20 16:20:30,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408898630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:30,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:30,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:20:30,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164637763] [2024-06-20 16:20:30,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:30,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:20:30,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:30,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:20:30,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:20:30,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:20:30,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 98 transitions, 778 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) [2024-06-20 16:20:30,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:30,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:20:30,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:30,989 INFO L124 PetriNetUnfolderBase]: 1590/2589 cut-off events. [2024-06-20 16:20:30,989 INFO L125 PetriNetUnfolderBase]: For 37624/37624 co-relation queries the response was YES. [2024-06-20 16:20:30,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13028 conditions, 2589 events. 1590/2589 cut-off events. For 37624/37624 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 13870 event pairs, 500 based on Foata normal form. 1/2588 useless extension candidates. Maximal degree in co-relation 12987. Up to 2426 conditions per place. [2024-06-20 16:20:31,002 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 91 selfloop transitions, 14 changer transitions 0/111 dead transitions. [2024-06-20 16:20:31,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 111 transitions, 1048 flow [2024-06-20 16:20:31,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:20:31,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:20:31,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-20 16:20:31,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-20 16:20:31,003 INFO L175 Difference]: Start difference. First operand has 96 places, 98 transitions, 778 flow. Second operand 7 states and 126 transitions. [2024-06-20 16:20:31,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 111 transitions, 1048 flow [2024-06-20 16:20:31,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 111 transitions, 996 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-20 16:20:31,031 INFO L231 Difference]: Finished difference. Result has 99 places, 101 transitions, 802 flow [2024-06-20 16:20:31,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=802, PETRI_PLACES=99, PETRI_TRANSITIONS=101} [2024-06-20 16:20:31,032 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 56 predicate places. [2024-06-20 16:20:31,032 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 101 transitions, 802 flow [2024-06-20 16:20:31,032 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) [2024-06-20 16:20:31,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:31,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:31,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-20 16:20:31,033 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:31,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:31,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1199634223, now seen corresponding path program 1 times [2024-06-20 16:20:31,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:31,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334055412] [2024-06-20 16:20:31,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:31,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:31,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:31,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334055412] [2024-06-20 16:20:31,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334055412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:31,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:31,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:20:31,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763009782] [2024-06-20 16:20:31,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:31,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:20:31,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:31,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:20:31,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:20:31,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:20:31,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 101 transitions, 802 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) [2024-06-20 16:20:31,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:31,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:20:31,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:32,404 INFO L124 PetriNetUnfolderBase]: 1687/2721 cut-off events. [2024-06-20 16:20:32,404 INFO L125 PetriNetUnfolderBase]: For 48380/48383 co-relation queries the response was YES. [2024-06-20 16:20:32,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14454 conditions, 2721 events. 1687/2721 cut-off events. For 48380/48383 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 14525 event pairs, 536 based on Foata normal form. 5/2723 useless extension candidates. Maximal degree in co-relation 14412. Up to 2449 conditions per place. [2024-06-20 16:20:32,419 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 100 selfloop transitions, 24 changer transitions 0/131 dead transitions. [2024-06-20 16:20:32,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 131 transitions, 1176 flow [2024-06-20 16:20:32,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:20:32,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:20:32,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-20 16:20:32,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-20 16:20:32,421 INFO L175 Difference]: Start difference. First operand has 99 places, 101 transitions, 802 flow. Second operand 7 states and 144 transitions. [2024-06-20 16:20:32,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 131 transitions, 1176 flow [2024-06-20 16:20:32,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 131 transitions, 1122 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-20 16:20:32,459 INFO L231 Difference]: Finished difference. Result has 102 places, 108 transitions, 888 flow [2024-06-20 16:20:32,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=888, PETRI_PLACES=102, PETRI_TRANSITIONS=108} [2024-06-20 16:20:32,460 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 59 predicate places. [2024-06-20 16:20:32,460 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 108 transitions, 888 flow [2024-06-20 16:20:32,460 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) [2024-06-20 16:20:32,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:32,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:32,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-20 16:20:32,460 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:32,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:32,461 INFO L85 PathProgramCache]: Analyzing trace with hash 2119238666, now seen corresponding path program 1 times [2024-06-20 16:20:32,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:32,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749094163] [2024-06-20 16:20:32,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:32,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:33,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:33,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:33,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749094163] [2024-06-20 16:20:33,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749094163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:33,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:33,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:20:33,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43095696] [2024-06-20 16:20:33,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:33,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:20:33,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:33,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:20:33,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:20:33,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:20:33,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 108 transitions, 888 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:33,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:33,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:20:33,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:34,384 INFO L124 PetriNetUnfolderBase]: 1797/2920 cut-off events. [2024-06-20 16:20:34,384 INFO L125 PetriNetUnfolderBase]: For 55297/55297 co-relation queries the response was YES. [2024-06-20 16:20:34,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15968 conditions, 2920 events. 1797/2920 cut-off events. For 55297/55297 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 16082 event pairs, 546 based on Foata normal form. 12/2927 useless extension candidates. Maximal degree in co-relation 15924. Up to 2271 conditions per place. [2024-06-20 16:20:34,403 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 102 selfloop transitions, 37 changer transitions 0/146 dead transitions. [2024-06-20 16:20:34,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 146 transitions, 1316 flow [2024-06-20 16:20:34,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:20:34,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:20:34,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-06-20 16:20:34,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-20 16:20:34,411 INFO L175 Difference]: Start difference. First operand has 102 places, 108 transitions, 888 flow. Second operand 8 states and 167 transitions. [2024-06-20 16:20:34,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 146 transitions, 1316 flow [2024-06-20 16:20:34,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 146 transitions, 1246 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-20 16:20:34,452 INFO L231 Difference]: Finished difference. Result has 107 places, 113 transitions, 967 flow [2024-06-20 16:20:34,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=967, PETRI_PLACES=107, PETRI_TRANSITIONS=113} [2024-06-20 16:20:34,453 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 64 predicate places. [2024-06-20 16:20:34,453 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 113 transitions, 967 flow [2024-06-20 16:20:34,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:34,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:34,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:34,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-20 16:20:34,453 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:34,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:34,453 INFO L85 PathProgramCache]: Analyzing trace with hash 861508385, now seen corresponding path program 2 times [2024-06-20 16:20:34,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:34,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807339076] [2024-06-20 16:20:34,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:34,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:35,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:35,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:35,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807339076] [2024-06-20 16:20:35,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807339076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:35,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:35,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:20:35,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911615755] [2024-06-20 16:20:35,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:35,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:20:35,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:35,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:20:35,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:20:35,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:20:35,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 113 transitions, 967 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) [2024-06-20 16:20:35,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:35,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:20:35,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:35,881 INFO L124 PetriNetUnfolderBase]: 1848/3006 cut-off events. [2024-06-20 16:20:35,881 INFO L125 PetriNetUnfolderBase]: For 60053/60056 co-relation queries the response was YES. [2024-06-20 16:20:35,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16845 conditions, 3006 events. 1848/3006 cut-off events. For 60053/60056 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 16686 event pairs, 562 based on Foata normal form. 5/3008 useless extension candidates. Maximal degree in co-relation 16800. Up to 2662 conditions per place. [2024-06-20 16:20:35,898 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 104 selfloop transitions, 29 changer transitions 0/140 dead transitions. [2024-06-20 16:20:35,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 140 transitions, 1435 flow [2024-06-20 16:20:35,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:20:35,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:20:35,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-20 16:20:35,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2024-06-20 16:20:35,899 INFO L175 Difference]: Start difference. First operand has 107 places, 113 transitions, 967 flow. Second operand 7 states and 141 transitions. [2024-06-20 16:20:35,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 140 transitions, 1435 flow [2024-06-20 16:20:35,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 140 transitions, 1384 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-20 16:20:35,955 INFO L231 Difference]: Finished difference. Result has 112 places, 121 transitions, 1106 flow [2024-06-20 16:20:35,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1106, PETRI_PLACES=112, PETRI_TRANSITIONS=121} [2024-06-20 16:20:35,955 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 69 predicate places. [2024-06-20 16:20:35,955 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 121 transitions, 1106 flow [2024-06-20 16:20:35,956 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) [2024-06-20 16:20:35,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:35,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:35,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-20 16:20:35,956 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:35,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:35,956 INFO L85 PathProgramCache]: Analyzing trace with hash 861508757, now seen corresponding path program 1 times [2024-06-20 16:20:35,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:35,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184576529] [2024-06-20 16:20:35,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:35,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:36,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:36,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:36,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184576529] [2024-06-20 16:20:36,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184576529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:36,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:36,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:20:36,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831954030] [2024-06-20 16:20:36,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:36,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:20:36,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:36,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:20:36,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:20:36,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:20:36,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 121 transitions, 1106 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:36,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:36,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:20:36,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:37,258 INFO L124 PetriNetUnfolderBase]: 1938/3097 cut-off events. [2024-06-20 16:20:37,258 INFO L125 PetriNetUnfolderBase]: For 66540/66540 co-relation queries the response was YES. [2024-06-20 16:20:37,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18086 conditions, 3097 events. 1938/3097 cut-off events. For 66540/66540 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 16858 event pairs, 590 based on Foata normal form. 1/3096 useless extension candidates. Maximal degree in co-relation 18039. Up to 2939 conditions per place. [2024-06-20 16:20:37,286 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 121 selfloop transitions, 14 changer transitions 0/140 dead transitions. [2024-06-20 16:20:37,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 140 transitions, 1464 flow [2024-06-20 16:20:37,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:20:37,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:20:37,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-20 16:20:37,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-20 16:20:37,287 INFO L175 Difference]: Start difference. First operand has 112 places, 121 transitions, 1106 flow. Second operand 7 states and 126 transitions. [2024-06-20 16:20:37,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 140 transitions, 1464 flow [2024-06-20 16:20:37,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 140 transitions, 1395 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-20 16:20:37,359 INFO L231 Difference]: Finished difference. Result has 116 places, 124 transitions, 1125 flow [2024-06-20 16:20:37,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1125, PETRI_PLACES=116, PETRI_TRANSITIONS=124} [2024-06-20 16:20:37,360 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 73 predicate places. [2024-06-20 16:20:37,360 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 124 transitions, 1125 flow [2024-06-20 16:20:37,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:37,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:37,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:37,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-20 16:20:37,361 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:37,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:37,361 INFO L85 PathProgramCache]: Analyzing trace with hash 864197924, now seen corresponding path program 2 times [2024-06-20 16:20:37,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:37,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797526469] [2024-06-20 16:20:37,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:37,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:38,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:38,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:38,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797526469] [2024-06-20 16:20:38,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797526469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:38,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:38,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:20:38,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51664707] [2024-06-20 16:20:38,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:38,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:20:38,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:38,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:20:38,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:20:38,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:20:38,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 124 transitions, 1125 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:38,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:38,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:20:38,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:39,090 INFO L124 PetriNetUnfolderBase]: 1843/2990 cut-off events. [2024-06-20 16:20:39,090 INFO L125 PetriNetUnfolderBase]: For 71779/71779 co-relation queries the response was YES. [2024-06-20 16:20:39,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17758 conditions, 2990 events. 1843/2990 cut-off events. For 71779/71779 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 16457 event pairs, 347 based on Foata normal form. 12/2997 useless extension candidates. Maximal degree in co-relation 17709. Up to 1909 conditions per place. [2024-06-20 16:20:39,109 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 106 selfloop transitions, 40 changer transitions 0/154 dead transitions. [2024-06-20 16:20:39,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 154 transitions, 1517 flow [2024-06-20 16:20:39,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:20:39,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:20:39,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-20 16:20:39,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-20 16:20:39,111 INFO L175 Difference]: Start difference. First operand has 116 places, 124 transitions, 1125 flow. Second operand 7 states and 150 transitions. [2024-06-20 16:20:39,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 154 transitions, 1517 flow [2024-06-20 16:20:39,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 154 transitions, 1445 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-20 16:20:39,174 INFO L231 Difference]: Finished difference. Result has 118 places, 124 transitions, 1142 flow [2024-06-20 16:20:39,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1142, PETRI_PLACES=118, PETRI_TRANSITIONS=124} [2024-06-20 16:20:39,175 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 75 predicate places. [2024-06-20 16:20:39,175 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 124 transitions, 1142 flow [2024-06-20 16:20:39,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:39,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:39,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:39,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-20 16:20:39,175 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:39,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:39,176 INFO L85 PathProgramCache]: Analyzing trace with hash -566830356, now seen corresponding path program 3 times [2024-06-20 16:20:39,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:39,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080448465] [2024-06-20 16:20:39,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:39,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:40,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:40,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:40,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080448465] [2024-06-20 16:20:40,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080448465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:40,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:40,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:20:40,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372137390] [2024-06-20 16:20:40,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:40,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:20:40,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:40,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:20:40,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:20:40,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:20:40,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 124 transitions, 1142 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:40,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:40,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:20:40,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:40,959 INFO L124 PetriNetUnfolderBase]: 1823/2959 cut-off events. [2024-06-20 16:20:40,960 INFO L125 PetriNetUnfolderBase]: For 74627/74631 co-relation queries the response was YES. [2024-06-20 16:20:40,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17763 conditions, 2959 events. 1823/2959 cut-off events. For 74627/74631 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 16268 event pairs, 310 based on Foata normal form. 13/2962 useless extension candidates. Maximal degree in co-relation 17713. Up to 1767 conditions per place. [2024-06-20 16:20:40,982 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 101 selfloop transitions, 39 changer transitions 0/148 dead transitions. [2024-06-20 16:20:40,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 148 transitions, 1476 flow [2024-06-20 16:20:40,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:20:40,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:20:40,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-20 16:20:40,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2024-06-20 16:20:40,984 INFO L175 Difference]: Start difference. First operand has 118 places, 124 transitions, 1142 flow. Second operand 7 states and 142 transitions. [2024-06-20 16:20:40,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 148 transitions, 1476 flow [2024-06-20 16:20:41,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 148 transitions, 1372 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-20 16:20:41,031 INFO L231 Difference]: Finished difference. Result has 118 places, 123 transitions, 1088 flow [2024-06-20 16:20:41,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1088, PETRI_PLACES=118, PETRI_TRANSITIONS=123} [2024-06-20 16:20:41,032 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 75 predicate places. [2024-06-20 16:20:41,032 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 123 transitions, 1088 flow [2024-06-20 16:20:41,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:41,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:41,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:41,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-20 16:20:41,033 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:41,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:41,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1216187507, now seen corresponding path program 2 times [2024-06-20 16:20:41,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:41,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887627034] [2024-06-20 16:20:41,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:41,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:41,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:41,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:41,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887627034] [2024-06-20 16:20:41,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887627034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:41,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:41,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:20:41,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729788673] [2024-06-20 16:20:41,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:41,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:20:41,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:41,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:20:41,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:20:41,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:20:41,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 123 transitions, 1088 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:41,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:41,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:20:41,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:42,383 INFO L124 PetriNetUnfolderBase]: 1903/3042 cut-off events. [2024-06-20 16:20:42,383 INFO L125 PetriNetUnfolderBase]: For 71063/71073 co-relation queries the response was YES. [2024-06-20 16:20:42,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18086 conditions, 3042 events. 1903/3042 cut-off events. For 71063/71073 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 16446 event pairs, 569 based on Foata normal form. 9/3048 useless extension candidates. Maximal degree in co-relation 18035. Up to 2866 conditions per place. [2024-06-20 16:20:42,402 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 108 selfloop transitions, 27 changer transitions 0/140 dead transitions. [2024-06-20 16:20:42,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 140 transitions, 1542 flow [2024-06-20 16:20:42,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:20:42,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:20:42,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-20 16:20:42,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41836734693877553 [2024-06-20 16:20:42,405 INFO L175 Difference]: Start difference. First operand has 118 places, 123 transitions, 1088 flow. Second operand 7 states and 123 transitions. [2024-06-20 16:20:42,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 140 transitions, 1542 flow [2024-06-20 16:20:42,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 140 transitions, 1431 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-20 16:20:42,457 INFO L231 Difference]: Finished difference. Result has 119 places, 129 transitions, 1151 flow [2024-06-20 16:20:42,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1151, PETRI_PLACES=119, PETRI_TRANSITIONS=129} [2024-06-20 16:20:42,457 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 76 predicate places. [2024-06-20 16:20:42,457 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 129 transitions, 1151 flow [2024-06-20 16:20:42,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:42,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:42,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:42,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-20 16:20:42,458 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:42,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:42,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1215771425, now seen corresponding path program 3 times [2024-06-20 16:20:42,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:42,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052908926] [2024-06-20 16:20:42,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:42,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:43,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:43,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:43,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052908926] [2024-06-20 16:20:43,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052908926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:43,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:43,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:20:43,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128800565] [2024-06-20 16:20:43,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:43,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:20:43,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:43,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:20:43,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:20:43,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:20:43,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 129 transitions, 1151 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) [2024-06-20 16:20:43,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:43,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:20:43,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:43,821 INFO L124 PetriNetUnfolderBase]: 1855/3011 cut-off events. [2024-06-20 16:20:43,822 INFO L125 PetriNetUnfolderBase]: For 77983/77990 co-relation queries the response was YES. [2024-06-20 16:20:43,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18047 conditions, 3011 events. 1855/3011 cut-off events. For 77983/77990 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 16649 event pairs, 566 based on Foata normal form. 6/3009 useless extension candidates. Maximal degree in co-relation 17996. Up to 2598 conditions per place. [2024-06-20 16:20:43,841 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 100 selfloop transitions, 42 changer transitions 0/152 dead transitions. [2024-06-20 16:20:43,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 152 transitions, 1715 flow [2024-06-20 16:20:43,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:20:43,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:20:43,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-20 16:20:43,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47278911564625853 [2024-06-20 16:20:43,843 INFO L175 Difference]: Start difference. First operand has 119 places, 129 transitions, 1151 flow. Second operand 7 states and 139 transitions. [2024-06-20 16:20:43,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 152 transitions, 1715 flow [2024-06-20 16:20:43,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 152 transitions, 1645 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-20 16:20:43,899 INFO L231 Difference]: Finished difference. Result has 124 places, 137 transitions, 1317 flow [2024-06-20 16:20:43,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1317, PETRI_PLACES=124, PETRI_TRANSITIONS=137} [2024-06-20 16:20:43,900 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 81 predicate places. [2024-06-20 16:20:43,900 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 137 transitions, 1317 flow [2024-06-20 16:20:43,900 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) [2024-06-20 16:20:43,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:43,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:43,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-20 16:20:43,901 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:43,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:43,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1215771797, now seen corresponding path program 3 times [2024-06-20 16:20:43,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:43,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424036489] [2024-06-20 16:20:43,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:43,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:44,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:44,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:44,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424036489] [2024-06-20 16:20:44,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424036489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:44,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:44,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:20:44,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763667138] [2024-06-20 16:20:44,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:44,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:20:44,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:44,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:20:44,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:20:44,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:20:44,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 137 transitions, 1317 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:44,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:44,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:20:44,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:45,126 INFO L124 PetriNetUnfolderBase]: 1927/3082 cut-off events. [2024-06-20 16:20:45,127 INFO L125 PetriNetUnfolderBase]: For 84584/84594 co-relation queries the response was YES. [2024-06-20 16:20:45,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19247 conditions, 3082 events. 1927/3082 cut-off events. For 84584/84594 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 16727 event pairs, 575 based on Foata normal form. 9/3088 useless extension candidates. Maximal degree in co-relation 19193. Up to 2901 conditions per place. [2024-06-20 16:20:45,149 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 116 selfloop transitions, 26 changer transitions 0/147 dead transitions. [2024-06-20 16:20:45,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 147 transitions, 1625 flow [2024-06-20 16:20:45,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:20:45,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:20:45,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-20 16:20:45,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41836734693877553 [2024-06-20 16:20:45,150 INFO L175 Difference]: Start difference. First operand has 124 places, 137 transitions, 1317 flow. Second operand 7 states and 123 transitions. [2024-06-20 16:20:45,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 147 transitions, 1625 flow [2024-06-20 16:20:45,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 147 transitions, 1457 flow, removed 55 selfloop flow, removed 4 redundant places. [2024-06-20 16:20:45,207 INFO L231 Difference]: Finished difference. Result has 127 places, 137 transitions, 1207 flow [2024-06-20 16:20:45,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1149, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1207, PETRI_PLACES=127, PETRI_TRANSITIONS=137} [2024-06-20 16:20:45,207 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 84 predicate places. [2024-06-20 16:20:45,208 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 137 transitions, 1207 flow [2024-06-20 16:20:45,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:45,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:45,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:45,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-20 16:20:45,208 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:45,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:45,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1038819953, now seen corresponding path program 1 times [2024-06-20 16:20:45,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:45,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296242451] [2024-06-20 16:20:45,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:45,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:46,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:46,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:46,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296242451] [2024-06-20 16:20:46,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296242451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:46,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:46,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:20:46,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857851241] [2024-06-20 16:20:46,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:46,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:20:46,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:46,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:20:46,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:20:46,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-20 16:20:46,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 137 transitions, 1207 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) [2024-06-20 16:20:46,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:46,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-20 16:20:46,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:46,745 INFO L124 PetriNetUnfolderBase]: 1663/2809 cut-off events. [2024-06-20 16:20:46,746 INFO L125 PetriNetUnfolderBase]: For 75190/75190 co-relation queries the response was YES. [2024-06-20 16:20:46,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16624 conditions, 2809 events. 1663/2809 cut-off events. For 75190/75190 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 16064 event pairs, 459 based on Foata normal form. 1/2808 useless extension candidates. Maximal degree in co-relation 16569. Up to 2500 conditions per place. [2024-06-20 16:20:46,766 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 131 selfloop transitions, 14 changer transitions 0/156 dead transitions. [2024-06-20 16:20:46,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 156 transitions, 1583 flow [2024-06-20 16:20:46,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:20:46,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:20:46,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-20 16:20:46,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46598639455782315 [2024-06-20 16:20:46,768 INFO L175 Difference]: Start difference. First operand has 127 places, 137 transitions, 1207 flow. Second operand 7 states and 137 transitions. [2024-06-20 16:20:46,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 156 transitions, 1583 flow [2024-06-20 16:20:46,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 156 transitions, 1513 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-20 16:20:46,827 INFO L231 Difference]: Finished difference. Result has 128 places, 140 transitions, 1223 flow [2024-06-20 16:20:46,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1137, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1223, PETRI_PLACES=128, PETRI_TRANSITIONS=140} [2024-06-20 16:20:46,828 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 85 predicate places. [2024-06-20 16:20:46,828 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 140 transitions, 1223 flow [2024-06-20 16:20:46,828 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) [2024-06-20 16:20:46,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:46,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:46,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-20 16:20:46,829 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:46,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:46,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1038824789, now seen corresponding path program 1 times [2024-06-20 16:20:46,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:46,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664648570] [2024-06-20 16:20:46,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:46,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:47,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:47,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:47,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664648570] [2024-06-20 16:20:47,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664648570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:47,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:47,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:20:47,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029197953] [2024-06-20 16:20:47,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:47,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:20:47,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:47,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:20:47,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:20:47,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:20:47,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 140 transitions, 1223 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) [2024-06-20 16:20:47,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:47,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:20:47,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:48,167 INFO L124 PetriNetUnfolderBase]: 1767/2919 cut-off events. [2024-06-20 16:20:48,167 INFO L125 PetriNetUnfolderBase]: For 80331/80331 co-relation queries the response was YES. [2024-06-20 16:20:48,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17522 conditions, 2919 events. 1767/2919 cut-off events. For 80331/80331 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 16335 event pairs, 498 based on Foata normal form. 2/2919 useless extension candidates. Maximal degree in co-relation 17466. Up to 2683 conditions per place. [2024-06-20 16:20:48,189 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 138 selfloop transitions, 14 changer transitions 0/158 dead transitions. [2024-06-20 16:20:48,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 158 transitions, 1617 flow [2024-06-20 16:20:48,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:20:48,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:20:48,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-20 16:20:48,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421768707482993 [2024-06-20 16:20:48,190 INFO L175 Difference]: Start difference. First operand has 128 places, 140 transitions, 1223 flow. Second operand 7 states and 130 transitions. [2024-06-20 16:20:48,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 158 transitions, 1617 flow [2024-06-20 16:20:48,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 158 transitions, 1553 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-20 16:20:48,253 INFO L231 Difference]: Finished difference. Result has 130 places, 143 transitions, 1241 flow [2024-06-20 16:20:48,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1159, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1241, PETRI_PLACES=130, PETRI_TRANSITIONS=143} [2024-06-20 16:20:48,253 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 87 predicate places. [2024-06-20 16:20:48,253 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 143 transitions, 1241 flow [2024-06-20 16:20:48,254 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) [2024-06-20 16:20:48,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:48,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:48,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-20 16:20:48,254 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:48,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:48,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1216193459, now seen corresponding path program 2 times [2024-06-20 16:20:48,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:48,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196682923] [2024-06-20 16:20:48,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:48,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:49,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:49,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:49,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196682923] [2024-06-20 16:20:49,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196682923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:49,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:49,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:20:49,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97292814] [2024-06-20 16:20:49,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:49,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:20:49,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:49,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:20:49,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:20:49,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:20:49,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 143 transitions, 1241 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) [2024-06-20 16:20:49,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:49,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:20:49,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:49,554 INFO L124 PetriNetUnfolderBase]: 1785/2929 cut-off events. [2024-06-20 16:20:49,554 INFO L125 PetriNetUnfolderBase]: For 83823/83826 co-relation queries the response was YES. [2024-06-20 16:20:49,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18130 conditions, 2929 events. 1785/2929 cut-off events. For 83823/83826 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 16272 event pairs, 502 based on Foata normal form. 4/2930 useless extension candidates. Maximal degree in co-relation 18073. Up to 2679 conditions per place. [2024-06-20 16:20:49,575 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 130 selfloop transitions, 27 changer transitions 0/163 dead transitions. [2024-06-20 16:20:49,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 163 transitions, 1761 flow [2024-06-20 16:20:49,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:20:49,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:20:49,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-20 16:20:49,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2024-06-20 16:20:49,576 INFO L175 Difference]: Start difference. First operand has 130 places, 143 transitions, 1241 flow. Second operand 7 states and 132 transitions. [2024-06-20 16:20:49,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 163 transitions, 1761 flow [2024-06-20 16:20:49,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 163 transitions, 1701 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-20 16:20:49,652 INFO L231 Difference]: Finished difference. Result has 132 places, 149 transitions, 1343 flow [2024-06-20 16:20:49,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1343, PETRI_PLACES=132, PETRI_TRANSITIONS=149} [2024-06-20 16:20:49,652 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 89 predicate places. [2024-06-20 16:20:49,653 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 149 transitions, 1343 flow [2024-06-20 16:20:49,653 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) [2024-06-20 16:20:49,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:49,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:49,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-20 16:20:49,654 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:49,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:49,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1215956309, now seen corresponding path program 3 times [2024-06-20 16:20:49,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:49,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559936026] [2024-06-20 16:20:49,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:49,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:50,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:50,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:50,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559936026] [2024-06-20 16:20:50,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559936026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:50,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:50,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:20:50,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645203647] [2024-06-20 16:20:50,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:50,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:20:50,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:50,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:20:50,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:20:50,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:20:50,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 149 transitions, 1343 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) [2024-06-20 16:20:50,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:50,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:20:50,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:50,905 INFO L124 PetriNetUnfolderBase]: 1779/2923 cut-off events. [2024-06-20 16:20:50,905 INFO L125 PetriNetUnfolderBase]: For 88800/88803 co-relation queries the response was YES. [2024-06-20 16:20:50,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18430 conditions, 2923 events. 1779/2923 cut-off events. For 88800/88803 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 16305 event pairs, 504 based on Foata normal form. 4/2924 useless extension candidates. Maximal degree in co-relation 18372. Up to 2674 conditions per place. [2024-06-20 16:20:50,926 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 130 selfloop transitions, 26 changer transitions 0/162 dead transitions. [2024-06-20 16:20:50,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 162 transitions, 1703 flow [2024-06-20 16:20:50,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:20:50,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:20:50,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-20 16:20:50,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2024-06-20 16:20:50,927 INFO L175 Difference]: Start difference. First operand has 132 places, 149 transitions, 1343 flow. Second operand 7 states and 132 transitions. [2024-06-20 16:20:50,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 162 transitions, 1703 flow [2024-06-20 16:20:51,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 162 transitions, 1613 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-06-20 16:20:51,009 INFO L231 Difference]: Finished difference. Result has 136 places, 149 transitions, 1311 flow [2024-06-20 16:20:51,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1311, PETRI_PLACES=136, PETRI_TRANSITIONS=149} [2024-06-20 16:20:51,010 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 93 predicate places. [2024-06-20 16:20:51,010 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 149 transitions, 1311 flow [2024-06-20 16:20:51,010 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) [2024-06-20 16:20:51,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:51,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:51,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-20 16:20:51,011 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:51,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:51,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1466043813, now seen corresponding path program 1 times [2024-06-20 16:20:51,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:51,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597207015] [2024-06-20 16:20:51,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:51,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:51,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:51,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:51,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597207015] [2024-06-20 16:20:51,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597207015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:51,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:51,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:20:51,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125936488] [2024-06-20 16:20:51,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:51,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:20:51,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:51,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:20:51,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:20:51,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:20:51,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 149 transitions, 1311 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:51,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:51,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:20:51,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:52,453 INFO L124 PetriNetUnfolderBase]: 1961/3131 cut-off events. [2024-06-20 16:20:52,454 INFO L125 PetriNetUnfolderBase]: For 111114/111117 co-relation queries the response was YES. [2024-06-20 16:20:52,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20575 conditions, 3131 events. 1961/3131 cut-off events. For 111114/111117 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 17072 event pairs, 573 based on Foata normal form. 5/3133 useless extension candidates. Maximal degree in co-relation 20515. Up to 2885 conditions per place. [2024-06-20 16:20:52,482 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 145 selfloop transitions, 28 changer transitions 0/178 dead transitions. [2024-06-20 16:20:52,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 178 transitions, 1799 flow [2024-06-20 16:20:52,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:20:52,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:20:52,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-20 16:20:52,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-20 16:20:52,484 INFO L175 Difference]: Start difference. First operand has 136 places, 149 transitions, 1311 flow. Second operand 8 states and 153 transitions. [2024-06-20 16:20:52,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 178 transitions, 1799 flow [2024-06-20 16:20:52,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 178 transitions, 1727 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-20 16:20:52,565 INFO L231 Difference]: Finished difference. Result has 138 places, 153 transitions, 1378 flow [2024-06-20 16:20:52,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1378, PETRI_PLACES=138, PETRI_TRANSITIONS=153} [2024-06-20 16:20:52,566 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 95 predicate places. [2024-06-20 16:20:52,566 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 153 transitions, 1378 flow [2024-06-20 16:20:52,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:52,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:52,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:52,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-20 16:20:52,566 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:52,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:52,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1465930446, now seen corresponding path program 1 times [2024-06-20 16:20:52,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:52,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420949563] [2024-06-20 16:20:52,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:52,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:53,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:53,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:53,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420949563] [2024-06-20 16:20:53,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420949563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:53,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:53,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:20:53,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140377110] [2024-06-20 16:20:53,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:53,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:20:53,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:53,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:20:53,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:20:53,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:20:53,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 153 transitions, 1378 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) [2024-06-20 16:20:53,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:53,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:20:53,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:53,864 INFO L124 PetriNetUnfolderBase]: 1924/3106 cut-off events. [2024-06-20 16:20:53,864 INFO L125 PetriNetUnfolderBase]: For 120726/120729 co-relation queries the response was YES. [2024-06-20 16:20:53,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21211 conditions, 3106 events. 1924/3106 cut-off events. For 120726/120729 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 17219 event pairs, 547 based on Foata normal form. 6/3109 useless extension candidates. Maximal degree in co-relation 21150. Up to 2774 conditions per place. [2024-06-20 16:20:53,885 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 140 selfloop transitions, 23 changer transitions 0/177 dead transitions. [2024-06-20 16:20:53,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 177 transitions, 1815 flow [2024-06-20 16:20:53,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:20:53,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:20:53,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-20 16:20:53,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-20 16:20:53,886 INFO L175 Difference]: Start difference. First operand has 138 places, 153 transitions, 1378 flow. Second operand 7 states and 140 transitions. [2024-06-20 16:20:53,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 177 transitions, 1815 flow [2024-06-20 16:20:53,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 177 transitions, 1704 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-20 16:20:53,974 INFO L231 Difference]: Finished difference. Result has 139 places, 157 transitions, 1383 flow [2024-06-20 16:20:53,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1267, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1383, PETRI_PLACES=139, PETRI_TRANSITIONS=157} [2024-06-20 16:20:53,975 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 96 predicate places. [2024-06-20 16:20:53,975 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 157 transitions, 1383 flow [2024-06-20 16:20:53,975 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) [2024-06-20 16:20:53,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:53,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:53,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-20 16:20:53,976 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:53,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:53,976 INFO L85 PathProgramCache]: Analyzing trace with hash 865461500, now seen corresponding path program 2 times [2024-06-20 16:20:53,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:53,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181065192] [2024-06-20 16:20:53,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:53,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:54,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:54,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:54,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181065192] [2024-06-20 16:20:54,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181065192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:54,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:54,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:20:54,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570535128] [2024-06-20 16:20:54,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:54,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:20:54,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:54,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:20:54,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:20:54,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:20:54,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 157 transitions, 1383 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) [2024-06-20 16:20:54,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:54,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:20:54,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:55,274 INFO L124 PetriNetUnfolderBase]: 1926/3114 cut-off events. [2024-06-20 16:20:55,274 INFO L125 PetriNetUnfolderBase]: For 125616/125619 co-relation queries the response was YES. [2024-06-20 16:20:55,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21330 conditions, 3114 events. 1926/3114 cut-off events. For 125616/125619 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 17329 event pairs, 546 based on Foata normal form. 6/3117 useless extension candidates. Maximal degree in co-relation 21268. Up to 2723 conditions per place. [2024-06-20 16:20:55,298 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 130 selfloop transitions, 35 changer transitions 0/179 dead transitions. [2024-06-20 16:20:55,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 179 transitions, 1893 flow [2024-06-20 16:20:55,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:20:55,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:20:55,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-20 16:20:55,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-20 16:20:55,299 INFO L175 Difference]: Start difference. First operand has 139 places, 157 transitions, 1383 flow. Second operand 7 states and 140 transitions. [2024-06-20 16:20:55,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 179 transitions, 1893 flow [2024-06-20 16:20:55,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 179 transitions, 1833 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-20 16:20:55,400 INFO L231 Difference]: Finished difference. Result has 143 places, 160 transitions, 1458 flow [2024-06-20 16:20:55,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1458, PETRI_PLACES=143, PETRI_TRANSITIONS=160} [2024-06-20 16:20:55,401 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 100 predicate places. [2024-06-20 16:20:55,401 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 160 transitions, 1458 flow [2024-06-20 16:20:55,401 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) [2024-06-20 16:20:55,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:55,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:55,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-20 16:20:55,401 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:55,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:55,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1260090109, now seen corresponding path program 2 times [2024-06-20 16:20:55,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:55,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056087062] [2024-06-20 16:20:55,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:55,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:56,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:56,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:56,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056087062] [2024-06-20 16:20:56,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056087062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:56,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:56,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:20:56,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630729146] [2024-06-20 16:20:56,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:56,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:20:56,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:56,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:20:56,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:20:56,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:20:56,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 160 transitions, 1458 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:56,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:56,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:20:56,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:56,868 INFO L124 PetriNetUnfolderBase]: 2060/3285 cut-off events. [2024-06-20 16:20:56,868 INFO L125 PetriNetUnfolderBase]: For 135153/135156 co-relation queries the response was YES. [2024-06-20 16:20:56,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22767 conditions, 3285 events. 2060/3285 cut-off events. For 135153/135156 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 18115 event pairs, 575 based on Foata normal form. 5/3287 useless extension candidates. Maximal degree in co-relation 22704. Up to 2884 conditions per place. [2024-06-20 16:20:56,892 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 141 selfloop transitions, 48 changer transitions 0/194 dead transitions. [2024-06-20 16:20:56,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 194 transitions, 2268 flow [2024-06-20 16:20:56,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:20:56,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:20:56,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-20 16:20:56,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-20 16:20:56,893 INFO L175 Difference]: Start difference. First operand has 143 places, 160 transitions, 1458 flow. Second operand 8 states and 153 transitions. [2024-06-20 16:20:56,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 194 transitions, 2268 flow [2024-06-20 16:20:56,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 194 transitions, 2183 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-20 16:20:56,990 INFO L231 Difference]: Finished difference. Result has 148 places, 172 transitions, 1735 flow [2024-06-20 16:20:56,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1735, PETRI_PLACES=148, PETRI_TRANSITIONS=172} [2024-06-20 16:20:56,990 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 105 predicate places. [2024-06-20 16:20:56,991 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 172 transitions, 1735 flow [2024-06-20 16:20:56,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:56,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:56,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:56,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-20 16:20:56,991 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:56,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:56,992 INFO L85 PathProgramCache]: Analyzing trace with hash 936968257, now seen corresponding path program 3 times [2024-06-20 16:20:56,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:56,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944307461] [2024-06-20 16:20:56,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:56,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:57,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:57,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:57,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944307461] [2024-06-20 16:20:57,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944307461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:57,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:57,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:20:57,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415237211] [2024-06-20 16:20:57,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:57,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:20:57,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:57,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:20:57,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:20:57,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:20:57,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 172 transitions, 1735 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:57,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:57,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:20:57,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:58,495 INFO L124 PetriNetUnfolderBase]: 2055/3279 cut-off events. [2024-06-20 16:20:58,495 INFO L125 PetriNetUnfolderBase]: For 143631/143634 co-relation queries the response was YES. [2024-06-20 16:20:58,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23447 conditions, 3279 events. 2055/3279 cut-off events. For 143631/143634 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 18098 event pairs, 570 based on Foata normal form. 5/3281 useless extension candidates. Maximal degree in co-relation 23382. Up to 2882 conditions per place. [2024-06-20 16:20:58,520 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 142 selfloop transitions, 47 changer transitions 0/194 dead transitions. [2024-06-20 16:20:58,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 194 transitions, 2327 flow [2024-06-20 16:20:58,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:20:58,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:20:58,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-20 16:20:58,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-20 16:20:58,521 INFO L175 Difference]: Start difference. First operand has 148 places, 172 transitions, 1735 flow. Second operand 8 states and 152 transitions. [2024-06-20 16:20:58,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 194 transitions, 2327 flow [2024-06-20 16:20:58,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 194 transitions, 2164 flow, removed 72 selfloop flow, removed 3 redundant places. [2024-06-20 16:20:58,657 INFO L231 Difference]: Finished difference. Result has 153 places, 172 transitions, 1674 flow [2024-06-20 16:20:58,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1572, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1674, PETRI_PLACES=153, PETRI_TRANSITIONS=172} [2024-06-20 16:20:58,657 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 110 predicate places. [2024-06-20 16:20:58,657 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 172 transitions, 1674 flow [2024-06-20 16:20:58,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:58,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:58,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:58,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-20 16:20:58,658 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:58,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:58,658 INFO L85 PathProgramCache]: Analyzing trace with hash 936968660, now seen corresponding path program 1 times [2024-06-20 16:20:58,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:58,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085691637] [2024-06-20 16:20:58,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:58,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:59,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:59,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:59,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085691637] [2024-06-20 16:20:59,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085691637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:59,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:59,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:20:59,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767678536] [2024-06-20 16:20:59,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:59,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:20:59,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:59,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:20:59,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:20:59,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:20:59,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 172 transitions, 1674 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:59,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:59,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:20:59,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:00,119 INFO L124 PetriNetUnfolderBase]: 2060/3285 cut-off events. [2024-06-20 16:21:00,120 INFO L125 PetriNetUnfolderBase]: For 144608/144608 co-relation queries the response was YES. [2024-06-20 16:21:00,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23536 conditions, 3285 events. 2060/3285 cut-off events. For 144608/144608 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 18018 event pairs, 581 based on Foata normal form. 1/3284 useless extension candidates. Maximal degree in co-relation 23469. Up to 3100 conditions per place. [2024-06-20 16:21:00,160 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 170 selfloop transitions, 17 changer transitions 0/192 dead transitions. [2024-06-20 16:21:00,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 192 transitions, 2152 flow [2024-06-20 16:21:00,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:21:00,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:21:00,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-20 16:21:00,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-06-20 16:21:00,162 INFO L175 Difference]: Start difference. First operand has 153 places, 172 transitions, 1674 flow. Second operand 8 states and 139 transitions. [2024-06-20 16:21:00,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 192 transitions, 2152 flow [2024-06-20 16:21:00,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 192 transitions, 2036 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-20 16:21:00,276 INFO L231 Difference]: Finished difference. Result has 154 places, 175 transitions, 1666 flow [2024-06-20 16:21:00,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1666, PETRI_PLACES=154, PETRI_TRANSITIONS=175} [2024-06-20 16:21:00,277 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 111 predicate places. [2024-06-20 16:21:00,277 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 175 transitions, 1666 flow [2024-06-20 16:21:00,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:00,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:00,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:00,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-20 16:21:00,278 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:00,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:00,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1476207404, now seen corresponding path program 3 times [2024-06-20 16:21:00,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:00,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954551509] [2024-06-20 16:21:00,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:00,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:00,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:00,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:00,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954551509] [2024-06-20 16:21:00,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954551509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:00,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:00,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:21:00,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719803239] [2024-06-20 16:21:00,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:00,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:21:00,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:00,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:21:00,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:21:01,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:21:01,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 175 transitions, 1666 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) [2024-06-20 16:21:01,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:01,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:21:01,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:01,636 INFO L124 PetriNetUnfolderBase]: 1989/3202 cut-off events. [2024-06-20 16:21:01,636 INFO L125 PetriNetUnfolderBase]: For 151881/151883 co-relation queries the response was YES. [2024-06-20 16:21:01,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23232 conditions, 3202 events. 1989/3202 cut-off events. For 151881/151883 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 17814 event pairs, 572 based on Foata normal form. 2/3197 useless extension candidates. Maximal degree in co-relation 23165. Up to 2845 conditions per place. [2024-06-20 16:21:01,661 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 152 selfloop transitions, 23 changer transitions 0/192 dead transitions. [2024-06-20 16:21:01,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 192 transitions, 2064 flow [2024-06-20 16:21:01,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:21:01,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:21:01,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-20 16:21:01,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46598639455782315 [2024-06-20 16:21:01,663 INFO L175 Difference]: Start difference. First operand has 154 places, 175 transitions, 1666 flow. Second operand 7 states and 137 transitions. [2024-06-20 16:21:01,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 192 transitions, 2064 flow [2024-06-20 16:21:01,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 192 transitions, 1954 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-20 16:21:01,792 INFO L231 Difference]: Finished difference. Result has 155 places, 175 transitions, 1608 flow [2024-06-20 16:21:01,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1556, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1608, PETRI_PLACES=155, PETRI_TRANSITIONS=175} [2024-06-20 16:21:01,792 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 112 predicate places. [2024-06-20 16:21:01,793 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 175 transitions, 1608 flow [2024-06-20 16:21:01,793 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) [2024-06-20 16:21:01,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:01,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:01,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-20 16:21:01,793 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:01,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:01,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1159374794, now seen corresponding path program 4 times [2024-06-20 16:21:01,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:01,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864616901] [2024-06-20 16:21:01,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:01,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:02,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:02,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:02,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864616901] [2024-06-20 16:21:02,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864616901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:02,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:02,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:21:02,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61768158] [2024-06-20 16:21:02,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:02,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:21:02,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:02,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:21:02,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:21:02,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:21:02,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 175 transitions, 1608 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) [2024-06-20 16:21:02,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:02,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:21:02,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:03,106 INFO L124 PetriNetUnfolderBase]: 2014/3237 cut-off events. [2024-06-20 16:21:03,106 INFO L125 PetriNetUnfolderBase]: For 160991/161009 co-relation queries the response was YES. [2024-06-20 16:21:03,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23738 conditions, 3237 events. 2014/3237 cut-off events. For 160991/161009 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 18023 event pairs, 560 based on Foata normal form. 2/3217 useless extension candidates. Maximal degree in co-relation 23670. Up to 2854 conditions per place. [2024-06-20 16:21:03,132 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 144 selfloop transitions, 32 changer transitions 0/193 dead transitions. [2024-06-20 16:21:03,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 193 transitions, 2060 flow [2024-06-20 16:21:03,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:21:03,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:21:03,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-20 16:21:03,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46598639455782315 [2024-06-20 16:21:03,133 INFO L175 Difference]: Start difference. First operand has 155 places, 175 transitions, 1608 flow. Second operand 7 states and 137 transitions. [2024-06-20 16:21:03,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 193 transitions, 2060 flow [2024-06-20 16:21:03,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 193 transitions, 1922 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-20 16:21:03,241 INFO L231 Difference]: Finished difference. Result has 152 places, 178 transitions, 1598 flow [2024-06-20 16:21:03,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1598, PETRI_PLACES=152, PETRI_TRANSITIONS=178} [2024-06-20 16:21:03,242 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 109 predicate places. [2024-06-20 16:21:03,242 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 178 transitions, 1598 flow [2024-06-20 16:21:03,242 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) [2024-06-20 16:21:03,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:03,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:03,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-20 16:21:03,242 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:03,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:03,243 INFO L85 PathProgramCache]: Analyzing trace with hash -960073004, now seen corresponding path program 5 times [2024-06-20 16:21:03,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:03,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599987471] [2024-06-20 16:21:03,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:03,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:04,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:04,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:04,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599987471] [2024-06-20 16:21:04,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599987471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:04,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:04,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:21:04,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119665585] [2024-06-20 16:21:04,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:04,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:21:04,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:04,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:21:04,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:21:04,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:21:04,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 178 transitions, 1598 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) [2024-06-20 16:21:04,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:04,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:21:04,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:04,658 INFO L124 PetriNetUnfolderBase]: 2018/3261 cut-off events. [2024-06-20 16:21:04,658 INFO L125 PetriNetUnfolderBase]: For 167943/167964 co-relation queries the response was YES. [2024-06-20 16:21:04,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23996 conditions, 3261 events. 2018/3261 cut-off events. For 167943/167964 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 18373 event pairs, 574 based on Foata normal form. 4/3242 useless extension candidates. Maximal degree in co-relation 23927. Up to 2763 conditions per place. [2024-06-20 16:21:04,685 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 123 selfloop transitions, 55 changer transitions 0/195 dead transitions. [2024-06-20 16:21:04,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 195 transitions, 2142 flow [2024-06-20 16:21:04,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:21:04,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:21:04,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-20 16:21:04,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46598639455782315 [2024-06-20 16:21:04,687 INFO L175 Difference]: Start difference. First operand has 152 places, 178 transitions, 1598 flow. Second operand 7 states and 137 transitions. [2024-06-20 16:21:04,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 195 transitions, 2142 flow [2024-06-20 16:21:04,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 195 transitions, 2046 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-20 16:21:04,818 INFO L231 Difference]: Finished difference. Result has 154 places, 181 transitions, 1676 flow [2024-06-20 16:21:04,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1676, PETRI_PLACES=154, PETRI_TRANSITIONS=181} [2024-06-20 16:21:04,819 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 111 predicate places. [2024-06-20 16:21:04,819 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 181 transitions, 1676 flow [2024-06-20 16:21:04,820 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) [2024-06-20 16:21:04,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:04,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:04,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-20 16:21:04,820 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:04,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:04,821 INFO L85 PathProgramCache]: Analyzing trace with hash -960280394, now seen corresponding path program 6 times [2024-06-20 16:21:04,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:04,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653767553] [2024-06-20 16:21:04,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:04,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:05,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:05,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:05,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653767553] [2024-06-20 16:21:05,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653767553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:05,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:05,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:21:05,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824212575] [2024-06-20 16:21:05,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:05,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:21:05,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:05,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:21:05,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:21:05,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:21:05,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 181 transitions, 1676 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) [2024-06-20 16:21:05,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:05,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:21:05,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:06,188 INFO L124 PetriNetUnfolderBase]: 2002/3235 cut-off events. [2024-06-20 16:21:06,188 INFO L125 PetriNetUnfolderBase]: For 173409/173430 co-relation queries the response was YES. [2024-06-20 16:21:06,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23889 conditions, 3235 events. 2002/3235 cut-off events. For 173409/173430 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 18213 event pairs, 567 based on Foata normal form. 6/3218 useless extension candidates. Maximal degree in co-relation 23819. Up to 2750 conditions per place. [2024-06-20 16:21:06,215 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 126 selfloop transitions, 51 changer transitions 0/194 dead transitions. [2024-06-20 16:21:06,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 194 transitions, 2078 flow [2024-06-20 16:21:06,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:21:06,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:21:06,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-20 16:21:06,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46598639455782315 [2024-06-20 16:21:06,217 INFO L175 Difference]: Start difference. First operand has 154 places, 181 transitions, 1676 flow. Second operand 7 states and 137 transitions. [2024-06-20 16:21:06,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 194 transitions, 2078 flow [2024-06-20 16:21:06,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 194 transitions, 1903 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-20 16:21:06,381 INFO L231 Difference]: Finished difference. Result has 157 places, 181 transitions, 1611 flow [2024-06-20 16:21:06,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1501, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1611, PETRI_PLACES=157, PETRI_TRANSITIONS=181} [2024-06-20 16:21:06,381 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 114 predicate places. [2024-06-20 16:21:06,381 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 181 transitions, 1611 flow [2024-06-20 16:21:06,381 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) [2024-06-20 16:21:06,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:06,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:06,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-20 16:21:06,382 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:06,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:06,382 INFO L85 PathProgramCache]: Analyzing trace with hash -952446508, now seen corresponding path program 2 times [2024-06-20 16:21:06,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:06,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007878469] [2024-06-20 16:21:06,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:06,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:07,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:07,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:07,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007878469] [2024-06-20 16:21:07,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007878469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:07,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:07,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:21:07,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608300398] [2024-06-20 16:21:07,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:07,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:21:07,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:07,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:21:07,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:21:07,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:21:07,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 181 transitions, 1611 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:07,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:07,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:21:07,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:07,775 INFO L124 PetriNetUnfolderBase]: 2055/3278 cut-off events. [2024-06-20 16:21:07,775 INFO L125 PetriNetUnfolderBase]: For 172255/172263 co-relation queries the response was YES. [2024-06-20 16:21:07,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23988 conditions, 3278 events. 2055/3278 cut-off events. For 172255/172263 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 17990 event pairs, 583 based on Foata normal form. 7/3282 useless extension candidates. Maximal degree in co-relation 23917. Up to 3066 conditions per place. [2024-06-20 16:21:07,801 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 159 selfloop transitions, 37 changer transitions 0/201 dead transitions. [2024-06-20 16:21:07,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 201 transitions, 2259 flow [2024-06-20 16:21:07,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:21:07,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:21:07,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-20 16:21:07,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-20 16:21:07,803 INFO L175 Difference]: Start difference. First operand has 157 places, 181 transitions, 1611 flow. Second operand 8 states and 138 transitions. [2024-06-20 16:21:07,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 201 transitions, 2259 flow [2024-06-20 16:21:07,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 201 transitions, 2130 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-20 16:21:07,949 INFO L231 Difference]: Finished difference. Result has 159 places, 189 transitions, 1728 flow [2024-06-20 16:21:07,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1482, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1728, PETRI_PLACES=159, PETRI_TRANSITIONS=189} [2024-06-20 16:21:07,949 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 116 predicate places. [2024-06-20 16:21:07,950 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 189 transitions, 1728 flow [2024-06-20 16:21:07,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:07,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:07,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:07,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-20 16:21:07,950 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:07,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:07,951 INFO L85 PathProgramCache]: Analyzing trace with hash -965790551, now seen corresponding path program 4 times [2024-06-20 16:21:07,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:07,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527050127] [2024-06-20 16:21:07,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:07,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:08,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:08,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:08,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527050127] [2024-06-20 16:21:08,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527050127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:08,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:08,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:21:08,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103842289] [2024-06-20 16:21:08,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:08,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:21:08,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:08,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:21:08,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:21:08,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:21:08,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 189 transitions, 1728 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:08,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:08,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:21:08,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:09,319 INFO L124 PetriNetUnfolderBase]: 2102/3350 cut-off events. [2024-06-20 16:21:09,319 INFO L125 PetriNetUnfolderBase]: For 186991/186996 co-relation queries the response was YES. [2024-06-20 16:21:09,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25008 conditions, 3350 events. 2102/3350 cut-off events. For 186991/186996 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 18469 event pairs, 601 based on Foata normal form. 5/3347 useless extension candidates. Maximal degree in co-relation 24935. Up to 2781 conditions per place. [2024-06-20 16:21:09,347 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 134 selfloop transitions, 80 changer transitions 0/219 dead transitions. [2024-06-20 16:21:09,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 219 transitions, 2734 flow [2024-06-20 16:21:09,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:21:09,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:21:09,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-20 16:21:09,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-20 16:21:09,351 INFO L175 Difference]: Start difference. First operand has 159 places, 189 transitions, 1728 flow. Second operand 8 states and 153 transitions. [2024-06-20 16:21:09,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 219 transitions, 2734 flow [2024-06-20 16:21:09,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 219 transitions, 2628 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-20 16:21:09,518 INFO L231 Difference]: Finished difference. Result has 164 places, 201 transitions, 2081 flow [2024-06-20 16:21:09,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1622, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2081, PETRI_PLACES=164, PETRI_TRANSITIONS=201} [2024-06-20 16:21:09,519 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 121 predicate places. [2024-06-20 16:21:09,519 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 201 transitions, 2081 flow [2024-06-20 16:21:09,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:09,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:09,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:09,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-20 16:21:09,520 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:09,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:09,520 INFO L85 PathProgramCache]: Analyzing trace with hash -952892381, now seen corresponding path program 5 times [2024-06-20 16:21:09,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:09,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079571247] [2024-06-20 16:21:09,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:09,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:10,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:10,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:10,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079571247] [2024-06-20 16:21:10,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079571247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:10,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:10,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:21:10,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245118623] [2024-06-20 16:21:10,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:10,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:21:10,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:10,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:21:10,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:21:10,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:21:10,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 201 transitions, 2081 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:10,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:10,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:21:10,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:11,062 INFO L124 PetriNetUnfolderBase]: 2153/3430 cut-off events. [2024-06-20 16:21:11,062 INFO L125 PetriNetUnfolderBase]: For 203953/203958 co-relation queries the response was YES. [2024-06-20 16:21:11,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26891 conditions, 3430 events. 2153/3430 cut-off events. For 203953/203958 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 18989 event pairs, 593 based on Foata normal form. 5/3427 useless extension candidates. Maximal degree in co-relation 26815. Up to 2824 conditions per place. [2024-06-20 16:21:11,088 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 132 selfloop transitions, 89 changer transitions 0/226 dead transitions. [2024-06-20 16:21:11,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 226 transitions, 2950 flow [2024-06-20 16:21:11,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:21:11,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:21:11,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-20 16:21:11,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494047619047619 [2024-06-20 16:21:11,090 INFO L175 Difference]: Start difference. First operand has 164 places, 201 transitions, 2081 flow. Second operand 8 states and 151 transitions. [2024-06-20 16:21:11,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 226 transitions, 2950 flow [2024-06-20 16:21:11,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 226 transitions, 2690 flow, removed 85 selfloop flow, removed 4 redundant places. [2024-06-20 16:21:11,252 INFO L231 Difference]: Finished difference. Result has 169 places, 209 transitions, 2211 flow [2024-06-20 16:21:11,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1861, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2211, PETRI_PLACES=169, PETRI_TRANSITIONS=209} [2024-06-20 16:21:11,253 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 126 predicate places. [2024-06-20 16:21:11,253 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 209 transitions, 2211 flow [2024-06-20 16:21:11,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:11,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:11,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:11,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-20 16:21:11,253 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:11,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:11,254 INFO L85 PathProgramCache]: Analyzing trace with hash -952891978, now seen corresponding path program 3 times [2024-06-20 16:21:11,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:11,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128581190] [2024-06-20 16:21:11,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:11,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:12,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:12,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:12,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128581190] [2024-06-20 16:21:12,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128581190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:12,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:12,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:21:12,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548357793] [2024-06-20 16:21:12,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:12,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:21:12,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:12,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:21:12,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:21:12,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:21:12,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 209 transitions, 2211 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:12,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:12,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:21:12,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:12,768 INFO L124 PetriNetUnfolderBase]: 2158/3435 cut-off events. [2024-06-20 16:21:12,768 INFO L125 PetriNetUnfolderBase]: For 204201/204209 co-relation queries the response was YES. [2024-06-20 16:21:12,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26536 conditions, 3435 events. 2158/3435 cut-off events. For 204201/204209 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 18975 event pairs, 602 based on Foata normal form. 7/3439 useless extension candidates. Maximal degree in co-relation 26458. Up to 3208 conditions per place. [2024-06-20 16:21:12,798 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 181 selfloop transitions, 38 changer transitions 0/224 dead transitions. [2024-06-20 16:21:12,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 224 transitions, 2832 flow [2024-06-20 16:21:12,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:21:12,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:21:12,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-20 16:21:12,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-06-20 16:21:12,799 INFO L175 Difference]: Start difference. First operand has 169 places, 209 transitions, 2211 flow. Second operand 8 states and 139 transitions. [2024-06-20 16:21:12,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 224 transitions, 2832 flow [2024-06-20 16:21:13,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 224 transitions, 2647 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-20 16:21:13,033 INFO L231 Difference]: Finished difference. Result has 173 places, 212 transitions, 2173 flow [2024-06-20 16:21:13,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2026, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2173, PETRI_PLACES=173, PETRI_TRANSITIONS=212} [2024-06-20 16:21:13,033 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 130 predicate places. [2024-06-20 16:21:13,033 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 212 transitions, 2173 flow [2024-06-20 16:21:13,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:13,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:13,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:13,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-20 16:21:13,034 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:13,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:13,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1252454947, now seen corresponding path program 6 times [2024-06-20 16:21:13,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:13,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120792543] [2024-06-20 16:21:13,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:13,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:13,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:13,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:13,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120792543] [2024-06-20 16:21:13,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120792543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:13,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:13,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:21:13,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426118542] [2024-06-20 16:21:13,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:13,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:21:13,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:13,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:21:13,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:21:13,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:21:13,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 212 transitions, 2173 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:13,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:13,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:21:13,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:14,466 INFO L124 PetriNetUnfolderBase]: 2153/3433 cut-off events. [2024-06-20 16:21:14,466 INFO L125 PetriNetUnfolderBase]: For 210394/210399 co-relation queries the response was YES. [2024-06-20 16:21:14,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26171 conditions, 3433 events. 2153/3433 cut-off events. For 210394/210399 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 19030 event pairs, 603 based on Foata normal form. 5/3430 useless extension candidates. Maximal degree in co-relation 26092. Up to 2829 conditions per place. [2024-06-20 16:21:14,496 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 142 selfloop transitions, 83 changer transitions 0/230 dead transitions. [2024-06-20 16:21:14,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 230 transitions, 2963 flow [2024-06-20 16:21:14,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:21:14,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:21:14,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-20 16:21:14,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-20 16:21:14,497 INFO L175 Difference]: Start difference. First operand has 173 places, 212 transitions, 2173 flow. Second operand 8 states and 153 transitions. [2024-06-20 16:21:14,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 230 transitions, 2963 flow [2024-06-20 16:21:14,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 230 transitions, 2806 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-20 16:21:14,754 INFO L231 Difference]: Finished difference. Result has 176 places, 212 transitions, 2190 flow [2024-06-20 16:21:14,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2016, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2190, PETRI_PLACES=176, PETRI_TRANSITIONS=212} [2024-06-20 16:21:14,755 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 133 predicate places. [2024-06-20 16:21:14,755 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 212 transitions, 2190 flow [2024-06-20 16:21:14,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:14,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:14,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:14,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-20 16:21:14,755 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:14,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:14,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1094817170, now seen corresponding path program 4 times [2024-06-20 16:21:14,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:14,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684342209] [2024-06-20 16:21:14,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:14,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:15,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:15,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:15,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684342209] [2024-06-20 16:21:15,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684342209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:15,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:15,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:21:15,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840161166] [2024-06-20 16:21:15,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:15,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:21:15,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:15,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:21:15,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:21:15,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:21:15,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 212 transitions, 2190 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:15,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:15,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:21:15,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:16,148 INFO L124 PetriNetUnfolderBase]: 2150/3427 cut-off events. [2024-06-20 16:21:16,148 INFO L125 PetriNetUnfolderBase]: For 216018/216026 co-relation queries the response was YES. [2024-06-20 16:21:16,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26424 conditions, 3427 events. 2150/3427 cut-off events. For 216018/216026 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 18985 event pairs, 600 based on Foata normal form. 7/3431 useless extension candidates. Maximal degree in co-relation 26344. Up to 3199 conditions per place. [2024-06-20 16:21:16,178 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 181 selfloop transitions, 38 changer transitions 0/224 dead transitions. [2024-06-20 16:21:16,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 224 transitions, 2662 flow [2024-06-20 16:21:16,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:21:16,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:21:16,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-20 16:21:16,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-06-20 16:21:16,179 INFO L175 Difference]: Start difference. First operand has 176 places, 212 transitions, 2190 flow. Second operand 8 states and 139 transitions. [2024-06-20 16:21:16,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 224 transitions, 2662 flow [2024-06-20 16:21:16,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 224 transitions, 2372 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-20 16:21:16,439 INFO L231 Difference]: Finished difference. Result has 175 places, 213 transitions, 1990 flow [2024-06-20 16:21:16,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1900, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1990, PETRI_PLACES=175, PETRI_TRANSITIONS=213} [2024-06-20 16:21:16,439 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 132 predicate places. [2024-06-20 16:21:16,439 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 213 transitions, 1990 flow [2024-06-20 16:21:16,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:16,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:16,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:16,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-20 16:21:16,440 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:16,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:16,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1072330421, now seen corresponding path program 1 times [2024-06-20 16:21:16,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:16,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902405937] [2024-06-20 16:21:16,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:16,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:17,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:17,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:17,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902405937] [2024-06-20 16:21:17,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902405937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:17,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:17,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:21:17,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748411264] [2024-06-20 16:21:17,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:17,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:21:17,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:17,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:21:17,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:21:17,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:21:17,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 213 transitions, 1990 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) [2024-06-20 16:21:17,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:17,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:21:17,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:18,113 INFO L124 PetriNetUnfolderBase]: 2043/3319 cut-off events. [2024-06-20 16:21:18,114 INFO L125 PetriNetUnfolderBase]: For 224422/224422 co-relation queries the response was YES. [2024-06-20 16:21:18,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25390 conditions, 3319 events. 2043/3319 cut-off events. For 224422/224422 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 18785 event pairs, 548 based on Foata normal form. 1/3318 useless extension candidates. Maximal degree in co-relation 25311. Up to 3039 conditions per place. [2024-06-20 16:21:18,148 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 205 selfloop transitions, 17 changer transitions 0/233 dead transitions. [2024-06-20 16:21:18,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 233 transitions, 2538 flow [2024-06-20 16:21:18,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:21:18,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:21:18,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-20 16:21:18,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2024-06-20 16:21:18,149 INFO L175 Difference]: Start difference. First operand has 175 places, 213 transitions, 1990 flow. Second operand 8 states and 146 transitions. [2024-06-20 16:21:18,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 233 transitions, 2538 flow [2024-06-20 16:21:18,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 233 transitions, 2474 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-20 16:21:18,509 INFO L231 Difference]: Finished difference. Result has 178 places, 216 transitions, 2034 flow [2024-06-20 16:21:18,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1926, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2034, PETRI_PLACES=178, PETRI_TRANSITIONS=216} [2024-06-20 16:21:18,509 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 135 predicate places. [2024-06-20 16:21:18,509 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 216 transitions, 2034 flow [2024-06-20 16:21:18,509 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) [2024-06-20 16:21:18,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:18,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:18,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-20 16:21:18,510 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:18,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:18,510 INFO L85 PathProgramCache]: Analyzing trace with hash 2144125802, now seen corresponding path program 1 times [2024-06-20 16:21:18,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:18,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495738880] [2024-06-20 16:21:18,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:18,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:19,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:19,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495738880] [2024-06-20 16:21:19,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495738880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:19,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:19,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:21:19,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381241292] [2024-06-20 16:21:19,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:19,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:21:19,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:19,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:21:19,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:21:19,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:21:19,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 216 transitions, 2034 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) [2024-06-20 16:21:19,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:19,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:21:19,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:20,019 INFO L124 PetriNetUnfolderBase]: 2053/3339 cut-off events. [2024-06-20 16:21:20,019 INFO L125 PetriNetUnfolderBase]: For 237723/237723 co-relation queries the response was YES. [2024-06-20 16:21:20,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25914 conditions, 3339 events. 2053/3339 cut-off events. For 237723/237723 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 18980 event pairs, 543 based on Foata normal form. 4/3341 useless extension candidates. Maximal degree in co-relation 25834. Up to 3046 conditions per place. [2024-06-20 16:21:20,047 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 208 selfloop transitions, 17 changer transitions 0/236 dead transitions. [2024-06-20 16:21:20,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 236 transitions, 2596 flow [2024-06-20 16:21:20,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:21:20,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:21:20,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-20 16:21:20,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2024-06-20 16:21:20,048 INFO L175 Difference]: Start difference. First operand has 178 places, 216 transitions, 2034 flow. Second operand 8 states and 146 transitions. [2024-06-20 16:21:20,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 236 transitions, 2596 flow [2024-06-20 16:21:20,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 236 transitions, 2510 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-20 16:21:20,292 INFO L231 Difference]: Finished difference. Result has 180 places, 219 transitions, 2048 flow [2024-06-20 16:21:20,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1948, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2048, PETRI_PLACES=180, PETRI_TRANSITIONS=219} [2024-06-20 16:21:20,292 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 137 predicate places. [2024-06-20 16:21:20,292 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 219 transitions, 2048 flow [2024-06-20 16:21:20,292 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) [2024-06-20 16:21:20,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:20,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:20,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-20 16:21:20,293 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:20,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:20,293 INFO L85 PathProgramCache]: Analyzing trace with hash -952707466, now seen corresponding path program 2 times [2024-06-20 16:21:20,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:20,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910583569] [2024-06-20 16:21:20,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:20,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:21,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:21,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:21,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910583569] [2024-06-20 16:21:21,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910583569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:21,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:21,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:21:21,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180772356] [2024-06-20 16:21:21,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:21,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:21:21,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:21,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:21:21,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:21:21,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:21:21,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 219 transitions, 2048 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) [2024-06-20 16:21:21,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:21,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:21:21,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:21,829 INFO L124 PetriNetUnfolderBase]: 2104/3423 cut-off events. [2024-06-20 16:21:21,829 INFO L125 PetriNetUnfolderBase]: For 256311/256314 co-relation queries the response was YES. [2024-06-20 16:21:21,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27251 conditions, 3423 events. 2104/3423 cut-off events. For 256311/256314 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 19621 event pairs, 546 based on Foata normal form. 6/3426 useless extension candidates. Maximal degree in co-relation 27170. Up to 3043 conditions per place. [2024-06-20 16:21:21,863 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 193 selfloop transitions, 41 changer transitions 0/245 dead transitions. [2024-06-20 16:21:21,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 245 transitions, 2958 flow [2024-06-20 16:21:21,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:21:21,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:21:21,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-20 16:21:21,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494047619047619 [2024-06-20 16:21:21,864 INFO L175 Difference]: Start difference. First operand has 180 places, 219 transitions, 2048 flow. Second operand 8 states and 151 transitions. [2024-06-20 16:21:21,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 245 transitions, 2958 flow [2024-06-20 16:21:22,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 245 transitions, 2880 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-20 16:21:22,204 INFO L231 Difference]: Finished difference. Result has 182 places, 228 transitions, 2244 flow [2024-06-20 16:21:22,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1970, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2244, PETRI_PLACES=182, PETRI_TRANSITIONS=228} [2024-06-20 16:21:22,204 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 139 predicate places. [2024-06-20 16:21:22,204 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 228 transitions, 2244 flow [2024-06-20 16:21:22,205 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) [2024-06-20 16:21:22,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:22,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:22,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-20 16:21:22,205 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:22,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:22,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1081478738, now seen corresponding path program 3 times [2024-06-20 16:21:22,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:22,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917727953] [2024-06-20 16:21:22,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:22,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:23,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:23,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:23,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917727953] [2024-06-20 16:21:23,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917727953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:23,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:23,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:21:23,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325635550] [2024-06-20 16:21:23,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:23,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:21:23,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:23,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:21:23,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:21:23,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:21:23,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 228 transitions, 2244 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) [2024-06-20 16:21:23,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:23,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:21:23,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:23,726 INFO L124 PetriNetUnfolderBase]: 2092/3407 cut-off events. [2024-06-20 16:21:23,727 INFO L125 PetriNetUnfolderBase]: For 262168/262171 co-relation queries the response was YES. [2024-06-20 16:21:23,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27394 conditions, 3407 events. 2092/3407 cut-off events. For 262168/262171 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 19549 event pairs, 544 based on Foata normal form. 6/3410 useless extension candidates. Maximal degree in co-relation 27312. Up to 3035 conditions per place. [2024-06-20 16:21:23,756 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 190 selfloop transitions, 43 changer transitions 0/244 dead transitions. [2024-06-20 16:21:23,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 244 transitions, 2872 flow [2024-06-20 16:21:23,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:21:23,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:21:23,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-20 16:21:23,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44345238095238093 [2024-06-20 16:21:23,757 INFO L175 Difference]: Start difference. First operand has 182 places, 228 transitions, 2244 flow. Second operand 8 states and 149 transitions. [2024-06-20 16:21:23,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 244 transitions, 2872 flow [2024-06-20 16:21:24,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 244 transitions, 2746 flow, removed 54 selfloop flow, removed 3 redundant places. [2024-06-20 16:21:24,043 INFO L231 Difference]: Finished difference. Result has 187 places, 228 transitions, 2211 flow [2024-06-20 16:21:24,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2118, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2211, PETRI_PLACES=187, PETRI_TRANSITIONS=228} [2024-06-20 16:21:24,044 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 144 predicate places. [2024-06-20 16:21:24,044 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 228 transitions, 2211 flow [2024-06-20 16:21:24,044 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) [2024-06-20 16:21:24,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:24,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:24,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-20 16:21:24,045 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:24,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:24,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1219945818, now seen corresponding path program 4 times [2024-06-20 16:21:24,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:24,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865909653] [2024-06-20 16:21:24,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:24,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:24,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:24,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:24,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865909653] [2024-06-20 16:21:24,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865909653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:24,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:24,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:21:24,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512355161] [2024-06-20 16:21:24,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:24,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:21:24,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:24,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:21:24,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:21:24,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:21:24,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 228 transitions, 2211 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) [2024-06-20 16:21:24,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:24,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:21:24,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:25,541 INFO L124 PetriNetUnfolderBase]: 2080/3393 cut-off events. [2024-06-20 16:21:25,541 INFO L125 PetriNetUnfolderBase]: For 264112/264115 co-relation queries the response was YES. [2024-06-20 16:21:25,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27146 conditions, 3393 events. 2080/3393 cut-off events. For 264112/264115 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 19464 event pairs, 548 based on Foata normal form. 6/3396 useless extension candidates. Maximal degree in co-relation 27062. Up to 3027 conditions per place. [2024-06-20 16:21:25,571 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 192 selfloop transitions, 40 changer transitions 0/243 dead transitions. [2024-06-20 16:21:25,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 243 transitions, 2733 flow [2024-06-20 16:21:25,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:21:25,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:21:25,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-20 16:21:25,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-20 16:21:25,572 INFO L175 Difference]: Start difference. First operand has 187 places, 228 transitions, 2211 flow. Second operand 8 states and 150 transitions. [2024-06-20 16:21:25,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 243 transitions, 2733 flow [2024-06-20 16:21:25,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 243 transitions, 2617 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-20 16:21:25,895 INFO L231 Difference]: Finished difference. Result has 189 places, 228 transitions, 2181 flow [2024-06-20 16:21:25,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2095, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2181, PETRI_PLACES=189, PETRI_TRANSITIONS=228} [2024-06-20 16:21:25,896 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 146 predicate places. [2024-06-20 16:21:25,896 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 228 transitions, 2181 flow [2024-06-20 16:21:25,896 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) [2024-06-20 16:21:25,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:25,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:25,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-20 16:21:25,896 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:25,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:25,896 INFO L85 PathProgramCache]: Analyzing trace with hash -952430636, now seen corresponding path program 1 times [2024-06-20 16:21:25,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:25,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371141918] [2024-06-20 16:21:25,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:25,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:26,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:26,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:26,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371141918] [2024-06-20 16:21:26,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371141918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:26,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:26,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:21:26,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280404526] [2024-06-20 16:21:26,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:26,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:21:26,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:26,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:21:26,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:21:27,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:21:27,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 228 transitions, 2181 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:27,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:27,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:21:27,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:27,695 INFO L124 PetriNetUnfolderBase]: 2208/3511 cut-off events. [2024-06-20 16:21:27,695 INFO L125 PetriNetUnfolderBase]: For 267927/267927 co-relation queries the response was YES. [2024-06-20 16:21:27,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27976 conditions, 3511 events. 2208/3511 cut-off events. For 267927/267927 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 19526 event pairs, 601 based on Foata normal form. 1/3510 useless extension candidates. Maximal degree in co-relation 27891. Up to 3317 conditions per place. [2024-06-20 16:21:27,725 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 218 selfloop transitions, 20 changer transitions 0/243 dead transitions. [2024-06-20 16:21:27,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 243 transitions, 2755 flow [2024-06-20 16:21:27,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:21:27,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:21:27,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-20 16:21:27,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-20 16:21:27,726 INFO L175 Difference]: Start difference. First operand has 189 places, 228 transitions, 2181 flow. Second operand 9 states and 147 transitions. [2024-06-20 16:21:27,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 243 transitions, 2755 flow [2024-06-20 16:21:28,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 243 transitions, 2631 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-20 16:21:28,054 INFO L231 Difference]: Finished difference. Result has 190 places, 231 transitions, 2179 flow [2024-06-20 16:21:28,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2179, PETRI_PLACES=190, PETRI_TRANSITIONS=231} [2024-06-20 16:21:28,054 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 147 predicate places. [2024-06-20 16:21:28,054 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 231 transitions, 2179 flow [2024-06-20 16:21:28,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:28,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:28,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:28,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-20 16:21:28,055 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:28,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:28,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1314569218, now seen corresponding path program 1 times [2024-06-20 16:21:28,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:28,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809070573] [2024-06-20 16:21:28,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:28,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:28,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:28,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:28,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809070573] [2024-06-20 16:21:28,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809070573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:28,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:28,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:21:28,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348010411] [2024-06-20 16:21:28,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:28,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:21:28,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:28,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:21:28,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:21:28,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:21:28,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 231 transitions, 2179 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) [2024-06-20 16:21:28,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:28,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:21:28,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:29,707 INFO L124 PetriNetUnfolderBase]: 2176/3502 cut-off events. [2024-06-20 16:21:29,707 INFO L125 PetriNetUnfolderBase]: For 289387/289390 co-relation queries the response was YES. [2024-06-20 16:21:29,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28287 conditions, 3502 events. 2176/3502 cut-off events. For 289387/289390 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 19759 event pairs, 446 based on Foata normal form. 12/3507 useless extension candidates. Maximal degree in co-relation 28201. Up to 3000 conditions per place. [2024-06-20 16:21:29,741 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 218 selfloop transitions, 25 changer transitions 0/266 dead transitions. [2024-06-20 16:21:29,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 266 transitions, 2847 flow [2024-06-20 16:21:29,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:21:29,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:21:29,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-20 16:21:29,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-20 16:21:29,743 INFO L175 Difference]: Start difference. First operand has 190 places, 231 transitions, 2179 flow. Second operand 8 states and 163 transitions. [2024-06-20 16:21:29,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 266 transitions, 2847 flow [2024-06-20 16:21:30,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 266 transitions, 2677 flow, removed 35 selfloop flow, removed 10 redundant places. [2024-06-20 16:21:30,018 INFO L231 Difference]: Finished difference. Result has 189 places, 235 transitions, 2150 flow [2024-06-20 16:21:30,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2009, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2150, PETRI_PLACES=189, PETRI_TRANSITIONS=235} [2024-06-20 16:21:30,018 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 146 predicate places. [2024-06-20 16:21:30,019 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 235 transitions, 2150 flow [2024-06-20 16:21:30,019 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) [2024-06-20 16:21:30,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:30,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:30,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-20 16:21:30,019 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:30,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:30,020 INFO L85 PathProgramCache]: Analyzing trace with hash -694984988, now seen corresponding path program 2 times [2024-06-20 16:21:30,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:30,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051709215] [2024-06-20 16:21:30,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:30,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:30,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:30,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:30,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051709215] [2024-06-20 16:21:30,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051709215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:30,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:30,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:21:30,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787098016] [2024-06-20 16:21:30,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:30,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:21:30,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:30,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:21:30,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:21:30,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:21:30,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 235 transitions, 2150 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) [2024-06-20 16:21:30,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:30,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:21:30,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:31,697 INFO L124 PetriNetUnfolderBase]: 2218/3570 cut-off events. [2024-06-20 16:21:31,698 INFO L125 PetriNetUnfolderBase]: For 304694/304697 co-relation queries the response was YES. [2024-06-20 16:21:31,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29334 conditions, 3570 events. 2218/3570 cut-off events. For 304694/304697 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 20284 event pairs, 585 based on Foata normal form. 14/3577 useless extension candidates. Maximal degree in co-relation 29247. Up to 3099 conditions per place. [2024-06-20 16:21:31,735 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 217 selfloop transitions, 26 changer transitions 0/266 dead transitions. [2024-06-20 16:21:31,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 266 transitions, 2820 flow [2024-06-20 16:21:31,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:21:31,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:21:31,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-20 16:21:31,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-20 16:21:31,736 INFO L175 Difference]: Start difference. First operand has 189 places, 235 transitions, 2150 flow. Second operand 8 states and 162 transitions. [2024-06-20 16:21:31,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 266 transitions, 2820 flow [2024-06-20 16:21:32,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 266 transitions, 2729 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-20 16:21:32,070 INFO L231 Difference]: Finished difference. Result has 192 places, 237 transitions, 2183 flow [2024-06-20 16:21:32,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2059, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2183, PETRI_PLACES=192, PETRI_TRANSITIONS=237} [2024-06-20 16:21:32,071 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 149 predicate places. [2024-06-20 16:21:32,071 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 237 transitions, 2183 flow [2024-06-20 16:21:32,071 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) [2024-06-20 16:21:32,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:32,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:32,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-20 16:21:32,072 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:32,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:32,072 INFO L85 PathProgramCache]: Analyzing trace with hash -694974076, now seen corresponding path program 1 times [2024-06-20 16:21:32,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:32,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957352714] [2024-06-20 16:21:32,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:32,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:32,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:32,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:32,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957352714] [2024-06-20 16:21:32,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957352714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:32,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:32,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:21:32,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129185060] [2024-06-20 16:21:32,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:32,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:21:32,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:32,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:21:32,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:21:33,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:21:33,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 237 transitions, 2183 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:33,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:33,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:21:33,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:33,691 INFO L124 PetriNetUnfolderBase]: 2303/3663 cut-off events. [2024-06-20 16:21:33,691 INFO L125 PetriNetUnfolderBase]: For 300379/300382 co-relation queries the response was YES. [2024-06-20 16:21:33,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30038 conditions, 3663 events. 2303/3663 cut-off events. For 300379/300382 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 20469 event pairs, 616 based on Foata normal form. 5/3665 useless extension candidates. Maximal degree in co-relation 29950. Up to 3366 conditions per place. [2024-06-20 16:21:33,727 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 231 selfloop transitions, 32 changer transitions 0/268 dead transitions. [2024-06-20 16:21:33,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 268 transitions, 2889 flow [2024-06-20 16:21:33,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:21:33,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:21:33,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-20 16:21:33,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-20 16:21:33,728 INFO L175 Difference]: Start difference. First operand has 192 places, 237 transitions, 2183 flow. Second operand 9 states and 169 transitions. [2024-06-20 16:21:33,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 268 transitions, 2889 flow [2024-06-20 16:21:34,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 268 transitions, 2799 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-20 16:21:34,043 INFO L231 Difference]: Finished difference. Result has 195 places, 241 transitions, 2262 flow [2024-06-20 16:21:34,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2093, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2262, PETRI_PLACES=195, PETRI_TRANSITIONS=241} [2024-06-20 16:21:34,044 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 152 predicate places. [2024-06-20 16:21:34,044 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 241 transitions, 2262 flow [2024-06-20 16:21:34,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:34,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:34,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:34,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-20 16:21:34,045 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:34,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:34,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1196124046, now seen corresponding path program 1 times [2024-06-20 16:21:34,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:34,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053842183] [2024-06-20 16:21:34,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:34,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:34,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:34,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:34,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053842183] [2024-06-20 16:21:34,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053842183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:34,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:34,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:21:34,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948871774] [2024-06-20 16:21:34,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:34,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:21:34,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:34,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:21:34,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:21:35,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:21:35,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 241 transitions, 2262 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) [2024-06-20 16:21:35,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:35,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:21:35,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:35,885 INFO L124 PetriNetUnfolderBase]: 2240/3599 cut-off events. [2024-06-20 16:21:35,885 INFO L125 PetriNetUnfolderBase]: For 311329/311329 co-relation queries the response was YES. [2024-06-20 16:21:35,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30316 conditions, 3599 events. 2240/3599 cut-off events. For 311329/311329 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 20382 event pairs, 592 based on Foata normal form. 2/3592 useless extension candidates. Maximal degree in co-relation 30227. Up to 3107 conditions per place. [2024-06-20 16:21:35,921 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 208 selfloop transitions, 37 changer transitions 0/268 dead transitions. [2024-06-20 16:21:35,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 268 transitions, 2906 flow [2024-06-20 16:21:35,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:21:35,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:21:35,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-20 16:21:35,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-20 16:21:35,922 INFO L175 Difference]: Start difference. First operand has 195 places, 241 transitions, 2262 flow. Second operand 8 states and 160 transitions. [2024-06-20 16:21:35,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 268 transitions, 2906 flow [2024-06-20 16:21:36,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 268 transitions, 2765 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-20 16:21:36,294 INFO L231 Difference]: Finished difference. Result has 196 places, 245 transitions, 2306 flow [2024-06-20 16:21:36,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2121, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2306, PETRI_PLACES=196, PETRI_TRANSITIONS=245} [2024-06-20 16:21:36,295 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 153 predicate places. [2024-06-20 16:21:36,295 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 245 transitions, 2306 flow [2024-06-20 16:21:36,295 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) [2024-06-20 16:21:36,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:36,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:36,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-20 16:21:36,295 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:36,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:36,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1196119210, now seen corresponding path program 1 times [2024-06-20 16:21:36,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:36,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793366501] [2024-06-20 16:21:36,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:36,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:37,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:37,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:37,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793366501] [2024-06-20 16:21:37,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793366501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:37,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:37,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:21:37,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051675975] [2024-06-20 16:21:37,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:37,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:21:37,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:37,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:21:37,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:21:37,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:21:37,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 245 transitions, 2306 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:37,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:37,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:21:37,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:38,026 INFO L124 PetriNetUnfolderBase]: 2333/3705 cut-off events. [2024-06-20 16:21:38,026 INFO L125 PetriNetUnfolderBase]: For 326031/326034 co-relation queries the response was YES. [2024-06-20 16:21:38,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31474 conditions, 3705 events. 2333/3705 cut-off events. For 326031/326034 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 20737 event pairs, 610 based on Foata normal form. 6/3708 useless extension candidates. Maximal degree in co-relation 31384. Up to 3411 conditions per place. [2024-06-20 16:21:38,060 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 239 selfloop transitions, 27 changer transitions 0/271 dead transitions. [2024-06-20 16:21:38,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 271 transitions, 2977 flow [2024-06-20 16:21:38,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:21:38,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:21:38,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-20 16:21:38,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-20 16:21:38,061 INFO L175 Difference]: Start difference. First operand has 196 places, 245 transitions, 2306 flow. Second operand 8 states and 150 transitions. [2024-06-20 16:21:38,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 271 transitions, 2977 flow [2024-06-20 16:21:38,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 271 transitions, 2803 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-20 16:21:38,444 INFO L231 Difference]: Finished difference. Result has 197 places, 249 transitions, 2270 flow [2024-06-20 16:21:38,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2270, PETRI_PLACES=197, PETRI_TRANSITIONS=249} [2024-06-20 16:21:38,445 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 154 predicate places. [2024-06-20 16:21:38,445 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 249 transitions, 2270 flow [2024-06-20 16:21:38,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:38,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:38,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:38,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-20 16:21:38,446 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:38,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:38,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1018750540, now seen corresponding path program 2 times [2024-06-20 16:21:38,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:38,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733895874] [2024-06-20 16:21:38,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:38,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:39,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:39,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:39,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733895874] [2024-06-20 16:21:39,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733895874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:39,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:39,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:21:39,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249428950] [2024-06-20 16:21:39,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:39,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:21:39,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:39,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:21:39,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:21:39,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:21:39,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 249 transitions, 2270 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:39,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:39,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:21:39,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:40,068 INFO L124 PetriNetUnfolderBase]: 2353/3739 cut-off events. [2024-06-20 16:21:40,068 INFO L125 PetriNetUnfolderBase]: For 336746/336749 co-relation queries the response was YES. [2024-06-20 16:21:40,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31755 conditions, 3739 events. 2353/3739 cut-off events. For 336746/336749 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 20957 event pairs, 601 based on Foata normal form. 6/3742 useless extension candidates. Maximal degree in co-relation 31664. Up to 3299 conditions per place. [2024-06-20 16:21:40,102 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 214 selfloop transitions, 55 changer transitions 0/274 dead transitions. [2024-06-20 16:21:40,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 274 transitions, 3077 flow [2024-06-20 16:21:40,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:21:40,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:21:40,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-20 16:21:40,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494047619047619 [2024-06-20 16:21:40,103 INFO L175 Difference]: Start difference. First operand has 197 places, 249 transitions, 2270 flow. Second operand 8 states and 151 transitions. [2024-06-20 16:21:40,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 274 transitions, 3077 flow [2024-06-20 16:21:40,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 274 transitions, 2984 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-20 16:21:40,416 INFO L231 Difference]: Finished difference. Result has 199 places, 253 transitions, 2376 flow [2024-06-20 16:21:40,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2177, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2376, PETRI_PLACES=199, PETRI_TRANSITIONS=253} [2024-06-20 16:21:40,417 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 156 predicate places. [2024-06-20 16:21:40,417 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 253 transitions, 2376 flow [2024-06-20 16:21:40,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:40,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:40,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:40,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-20 16:21:40,417 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:40,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:40,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1018987690, now seen corresponding path program 3 times [2024-06-20 16:21:40,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:40,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912323213] [2024-06-20 16:21:40,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:40,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:41,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:41,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:41,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912323213] [2024-06-20 16:21:41,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912323213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:41,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:41,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:21:41,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892287317] [2024-06-20 16:21:41,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:41,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:21:41,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:41,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:21:41,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:21:41,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:21:41,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 253 transitions, 2376 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:41,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:41,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:21:41,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:41,946 INFO L124 PetriNetUnfolderBase]: 2357/3753 cut-off events. [2024-06-20 16:21:41,946 INFO L125 PetriNetUnfolderBase]: For 344047/344050 co-relation queries the response was YES. [2024-06-20 16:21:41,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31951 conditions, 3753 events. 2357/3753 cut-off events. For 344047/344050 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 21088 event pairs, 615 based on Foata normal form. 6/3756 useless extension candidates. Maximal degree in co-relation 31859. Up to 3300 conditions per place. [2024-06-20 16:21:41,983 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 215 selfloop transitions, 57 changer transitions 0/277 dead transitions. [2024-06-20 16:21:41,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 277 transitions, 3185 flow [2024-06-20 16:21:41,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:21:41,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:21:41,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-20 16:21:41,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-20 16:21:41,985 INFO L175 Difference]: Start difference. First operand has 199 places, 253 transitions, 2376 flow. Second operand 8 states and 152 transitions. [2024-06-20 16:21:41,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 277 transitions, 3185 flow [2024-06-20 16:21:42,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 277 transitions, 3056 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-20 16:21:42,331 INFO L231 Difference]: Finished difference. Result has 202 places, 256 transitions, 2441 flow [2024-06-20 16:21:42,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2249, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2441, PETRI_PLACES=202, PETRI_TRANSITIONS=256} [2024-06-20 16:21:42,331 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 159 predicate places. [2024-06-20 16:21:42,332 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 256 transitions, 2441 flow [2024-06-20 16:21:42,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:42,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:42,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:42,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-20 16:21:42,332 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:42,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:42,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1019111008, now seen corresponding path program 3 times [2024-06-20 16:21:42,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:42,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803051129] [2024-06-20 16:21:42,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:42,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:43,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:43,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:43,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803051129] [2024-06-20 16:21:43,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803051129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:43,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:43,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:21:43,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653175753] [2024-06-20 16:21:43,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:43,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:21:43,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:43,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:21:43,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:21:43,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:21:43,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 256 transitions, 2441 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) [2024-06-20 16:21:43,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:43,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:21:43,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:43,955 INFO L124 PetriNetUnfolderBase]: 2327/3751 cut-off events. [2024-06-20 16:21:43,956 INFO L125 PetriNetUnfolderBase]: For 376872/376883 co-relation queries the response was YES. [2024-06-20 16:21:43,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32389 conditions, 3751 events. 2327/3751 cut-off events. For 376872/376883 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 21613 event pairs, 577 based on Foata normal form. 22/3752 useless extension candidates. Maximal degree in co-relation 32296. Up to 3202 conditions per place. [2024-06-20 16:21:43,993 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 218 selfloop transitions, 38 changer transitions 0/282 dead transitions. [2024-06-20 16:21:43,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 282 transitions, 3147 flow [2024-06-20 16:21:43,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:21:43,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:21:43,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-20 16:21:43,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2024-06-20 16:21:43,994 INFO L175 Difference]: Start difference. First operand has 202 places, 256 transitions, 2441 flow. Second operand 8 states and 158 transitions. [2024-06-20 16:21:43,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 282 transitions, 3147 flow [2024-06-20 16:21:44,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 282 transitions, 3020 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-20 16:21:44,382 INFO L231 Difference]: Finished difference. Result has 205 places, 258 transitions, 2470 flow [2024-06-20 16:21:44,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2314, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2470, PETRI_PLACES=205, PETRI_TRANSITIONS=258} [2024-06-20 16:21:44,383 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 162 predicate places. [2024-06-20 16:21:44,383 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 258 transitions, 2470 flow [2024-06-20 16:21:44,383 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) [2024-06-20 16:21:44,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:44,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:44,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-20 16:21:44,384 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:44,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:44,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1018742046, now seen corresponding path program 2 times [2024-06-20 16:21:44,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:44,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960795121] [2024-06-20 16:21:44,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:44,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:45,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:45,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:45,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960795121] [2024-06-20 16:21:45,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960795121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:45,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:45,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:21:45,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469683574] [2024-06-20 16:21:45,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:45,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:21:45,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:45,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:21:45,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:21:45,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:21:45,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 258 transitions, 2470 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:45,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:45,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:21:45,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:46,016 INFO L124 PetriNetUnfolderBase]: 2460/3907 cut-off events. [2024-06-20 16:21:46,016 INFO L125 PetriNetUnfolderBase]: For 375968/375971 co-relation queries the response was YES. [2024-06-20 16:21:46,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33844 conditions, 3907 events. 2460/3907 cut-off events. For 375968/375971 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 22131 event pairs, 600 based on Foata normal form. 5/3909 useless extension candidates. Maximal degree in co-relation 33750. Up to 3353 conditions per place. [2024-06-20 16:21:46,055 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 221 selfloop transitions, 65 changer transitions 0/291 dead transitions. [2024-06-20 16:21:46,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 291 transitions, 3618 flow [2024-06-20 16:21:46,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:21:46,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:21:46,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-20 16:21:46,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-20 16:21:46,057 INFO L175 Difference]: Start difference. First operand has 205 places, 258 transitions, 2470 flow. Second operand 9 states and 169 transitions. [2024-06-20 16:21:46,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 291 transitions, 3618 flow [2024-06-20 16:21:46,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 291 transitions, 3500 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-20 16:21:46,426 INFO L231 Difference]: Finished difference. Result has 209 places, 266 transitions, 2710 flow [2024-06-20 16:21:46,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2352, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2710, PETRI_PLACES=209, PETRI_TRANSITIONS=266} [2024-06-20 16:21:46,427 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 166 predicate places. [2024-06-20 16:21:46,427 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 266 transitions, 2710 flow [2024-06-20 16:21:46,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:46,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:46,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:46,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-20 16:21:46,428 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:46,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:46,428 INFO L85 PathProgramCache]: Analyzing trace with hash -408086746, now seen corresponding path program 3 times [2024-06-20 16:21:46,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:46,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354135454] [2024-06-20 16:21:46,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:46,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:47,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:47,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:47,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354135454] [2024-06-20 16:21:47,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354135454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:47,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:47,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:21:47,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277097992] [2024-06-20 16:21:47,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:47,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:21:47,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:47,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:21:47,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:21:47,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:21:47,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 266 transitions, 2710 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:47,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:47,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:21:47,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:48,201 INFO L124 PetriNetUnfolderBase]: 2491/3958 cut-off events. [2024-06-20 16:21:48,201 INFO L125 PetriNetUnfolderBase]: For 397200/397203 co-relation queries the response was YES. [2024-06-20 16:21:48,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35157 conditions, 3958 events. 2491/3958 cut-off events. For 397200/397203 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 22467 event pairs, 625 based on Foata normal form. 5/3960 useless extension candidates. Maximal degree in co-relation 35061. Up to 3382 conditions per place. [2024-06-20 16:21:48,240 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 220 selfloop transitions, 73 changer transitions 0/298 dead transitions. [2024-06-20 16:21:48,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 298 transitions, 3866 flow [2024-06-20 16:21:48,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:21:48,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:21:48,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-20 16:21:48,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-20 16:21:48,242 INFO L175 Difference]: Start difference. First operand has 209 places, 266 transitions, 2710 flow. Second operand 9 states and 171 transitions. [2024-06-20 16:21:48,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 298 transitions, 3866 flow [2024-06-20 16:21:48,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 298 transitions, 3663 flow, removed 69 selfloop flow, removed 5 redundant places. [2024-06-20 16:21:48,708 INFO L231 Difference]: Finished difference. Result has 213 places, 274 transitions, 2892 flow [2024-06-20 16:21:48,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2531, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2892, PETRI_PLACES=213, PETRI_TRANSITIONS=274} [2024-06-20 16:21:48,708 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 170 predicate places. [2024-06-20 16:21:48,708 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 274 transitions, 2892 flow [2024-06-20 16:21:48,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:48,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:48,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:48,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-20 16:21:48,709 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:48,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:48,709 INFO L85 PathProgramCache]: Analyzing trace with hash -407728262, now seen corresponding path program 1 times [2024-06-20 16:21:48,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:48,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097463660] [2024-06-20 16:21:48,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:48,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:49,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:49,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:49,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097463660] [2024-06-20 16:21:49,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097463660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:49,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:49,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:21:49,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230660812] [2024-06-20 16:21:49,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:49,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:21:49,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:49,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:21:49,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:21:49,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:21:49,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 274 transitions, 2892 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:49,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:49,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:21:49,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:50,408 INFO L124 PetriNetUnfolderBase]: 2496/3948 cut-off events. [2024-06-20 16:21:50,408 INFO L125 PetriNetUnfolderBase]: For 404035/404035 co-relation queries the response was YES. [2024-06-20 16:21:50,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35494 conditions, 3948 events. 2496/3948 cut-off events. For 404035/404035 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 22219 event pairs, 641 based on Foata normal form. 1/3947 useless extension candidates. Maximal degree in co-relation 35396. Up to 3726 conditions per place. [2024-06-20 16:21:50,445 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 270 selfloop transitions, 20 changer transitions 0/295 dead transitions. [2024-06-20 16:21:50,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 295 transitions, 3610 flow [2024-06-20 16:21:50,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:21:50,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:21:50,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-20 16:21:50,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-20 16:21:50,446 INFO L175 Difference]: Start difference. First operand has 213 places, 274 transitions, 2892 flow. Second operand 9 states and 153 transitions. [2024-06-20 16:21:50,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 295 transitions, 3610 flow [2024-06-20 16:21:50,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 295 transitions, 3494 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-20 16:21:50,915 INFO L231 Difference]: Finished difference. Result has 218 places, 277 transitions, 2922 flow [2024-06-20 16:21:50,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2776, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2922, PETRI_PLACES=218, PETRI_TRANSITIONS=277} [2024-06-20 16:21:50,915 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 175 predicate places. [2024-06-20 16:21:50,915 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 277 transitions, 2922 flow [2024-06-20 16:21:50,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:50,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:50,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:50,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-20 16:21:50,916 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:50,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:50,917 INFO L85 PathProgramCache]: Analyzing trace with hash -407740786, now seen corresponding path program 4 times [2024-06-20 16:21:50,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:50,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854743539] [2024-06-20 16:21:50,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:50,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:51,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:51,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:51,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854743539] [2024-06-20 16:21:51,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854743539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:51,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:51,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:21:51,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259399351] [2024-06-20 16:21:51,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:51,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:21:51,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:51,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:21:51,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:21:51,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:21:51,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 277 transitions, 2922 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:51,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:51,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:21:51,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:52,782 INFO L124 PetriNetUnfolderBase]: 2491/3951 cut-off events. [2024-06-20 16:21:52,782 INFO L125 PetriNetUnfolderBase]: For 406831/406834 co-relation queries the response was YES. [2024-06-20 16:21:52,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35576 conditions, 3951 events. 2491/3951 cut-off events. For 406831/406834 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 22295 event pairs, 605 based on Foata normal form. 5/3953 useless extension candidates. Maximal degree in co-relation 35476. Up to 3387 conditions per place. [2024-06-20 16:21:52,819 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 224 selfloop transitions, 71 changer transitions 0/300 dead transitions. [2024-06-20 16:21:52,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 300 transitions, 3728 flow [2024-06-20 16:21:52,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:21:52,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:21:52,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-20 16:21:52,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-20 16:21:52,821 INFO L175 Difference]: Start difference. First operand has 218 places, 277 transitions, 2922 flow. Second operand 9 states and 169 transitions. [2024-06-20 16:21:52,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 300 transitions, 3728 flow [2024-06-20 16:21:53,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 300 transitions, 3532 flow, removed 80 selfloop flow, removed 7 redundant places. [2024-06-20 16:21:53,424 INFO L231 Difference]: Finished difference. Result has 220 places, 277 transitions, 2875 flow [2024-06-20 16:21:53,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2726, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2875, PETRI_PLACES=220, PETRI_TRANSITIONS=277} [2024-06-20 16:21:53,425 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 177 predicate places. [2024-06-20 16:21:53,425 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 277 transitions, 2875 flow [2024-06-20 16:21:53,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:53,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:53,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:53,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-20 16:21:53,425 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:53,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:53,426 INFO L85 PathProgramCache]: Analyzing trace with hash -581166888, now seen corresponding path program 2 times [2024-06-20 16:21:53,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:53,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288289166] [2024-06-20 16:21:53,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:53,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:54,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:54,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:54,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288289166] [2024-06-20 16:21:54,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288289166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:54,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:54,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:21:54,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447294738] [2024-06-20 16:21:54,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:54,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:21:54,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:54,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:21:54,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:21:54,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:21:54,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 277 transitions, 2875 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) [2024-06-20 16:21:54,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:54,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:21:54,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:55,232 INFO L124 PetriNetUnfolderBase]: 2401/3844 cut-off events. [2024-06-20 16:21:55,232 INFO L125 PetriNetUnfolderBase]: For 415606/415608 co-relation queries the response was YES. [2024-06-20 16:21:55,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35424 conditions, 3844 events. 2401/3844 cut-off events. For 415606/415608 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 22016 event pairs, 626 based on Foata normal form. 1/3830 useless extension candidates. Maximal degree in co-relation 35323. Up to 3337 conditions per place. [2024-06-20 16:21:55,274 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 234 selfloop transitions, 40 changer transitions 0/300 dead transitions. [2024-06-20 16:21:55,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 300 transitions, 3569 flow [2024-06-20 16:21:55,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:21:55,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:21:55,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-20 16:21:55,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-20 16:21:55,275 INFO L175 Difference]: Start difference. First operand has 220 places, 277 transitions, 2875 flow. Second operand 8 states and 157 transitions. [2024-06-20 16:21:55,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 300 transitions, 3569 flow [2024-06-20 16:21:55,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 300 transitions, 3433 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-20 16:21:55,919 INFO L231 Difference]: Finished difference. Result has 221 places, 280 transitions, 2927 flow [2024-06-20 16:21:55,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2739, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2927, PETRI_PLACES=221, PETRI_TRANSITIONS=280} [2024-06-20 16:21:55,920 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 178 predicate places. [2024-06-20 16:21:55,920 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 280 transitions, 2927 flow [2024-06-20 16:21:55,920 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) [2024-06-20 16:21:55,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:55,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:55,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-20 16:21:55,921 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:55,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:55,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1523426810, now seen corresponding path program 3 times [2024-06-20 16:21:55,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:55,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406360204] [2024-06-20 16:21:55,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:55,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:56,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:56,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:56,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406360204] [2024-06-20 16:21:56,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406360204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:56,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:56,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:21:56,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192178169] [2024-06-20 16:21:56,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:56,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:21:56,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:56,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:21:56,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:21:57,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:21:57,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 280 transitions, 2927 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) [2024-06-20 16:21:57,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:57,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:21:57,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:57,889 INFO L124 PetriNetUnfolderBase]: 2406/3851 cut-off events. [2024-06-20 16:21:57,889 INFO L125 PetriNetUnfolderBase]: For 429758/429760 co-relation queries the response was YES. [2024-06-20 16:21:57,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35845 conditions, 3851 events. 2406/3851 cut-off events. For 429758/429760 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 22067 event pairs, 626 based on Foata normal form. 1/3837 useless extension candidates. Maximal degree in co-relation 35743. Up to 3344 conditions per place. [2024-06-20 16:21:57,929 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 238 selfloop transitions, 39 changer transitions 0/303 dead transitions. [2024-06-20 16:21:57,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 303 transitions, 3633 flow [2024-06-20 16:21:57,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:21:57,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:21:57,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-20 16:21:57,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-20 16:21:57,930 INFO L175 Difference]: Start difference. First operand has 221 places, 280 transitions, 2927 flow. Second operand 8 states and 157 transitions. [2024-06-20 16:21:57,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 303 transitions, 3633 flow [2024-06-20 16:21:58,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 303 transitions, 3463 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-20 16:21:58,532 INFO L231 Difference]: Finished difference. Result has 223 places, 283 transitions, 2949 flow [2024-06-20 16:21:58,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2757, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2949, PETRI_PLACES=223, PETRI_TRANSITIONS=283} [2024-06-20 16:21:58,533 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 180 predicate places. [2024-06-20 16:21:58,533 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 283 transitions, 2949 flow [2024-06-20 16:21:58,533 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) [2024-06-20 16:21:58,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:58,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:58,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-20 16:21:58,533 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:58,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:58,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1762755800, now seen corresponding path program 4 times [2024-06-20 16:21:58,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:58,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725037078] [2024-06-20 16:21:58,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:58,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:59,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:59,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:59,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725037078] [2024-06-20 16:21:59,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725037078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:59,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:59,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:21:59,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376553806] [2024-06-20 16:21:59,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:59,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:21:59,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:59,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:21:59,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:21:59,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:21:59,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 283 transitions, 2949 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) [2024-06-20 16:21:59,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:59,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:21:59,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:00,471 INFO L124 PetriNetUnfolderBase]: 2403/3846 cut-off events. [2024-06-20 16:22:00,471 INFO L125 PetriNetUnfolderBase]: For 440786/440786 co-relation queries the response was YES. [2024-06-20 16:22:00,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36088 conditions, 3846 events. 2403/3846 cut-off events. For 440786/440786 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 22047 event pairs, 614 based on Foata normal form. 1/3833 useless extension candidates. Maximal degree in co-relation 35985. Up to 3325 conditions per place. [2024-06-20 16:22:00,512 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 226 selfloop transitions, 54 changer transitions 0/306 dead transitions. [2024-06-20 16:22:00,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 306 transitions, 3699 flow [2024-06-20 16:22:00,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:22:00,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:22:00,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-20 16:22:00,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-20 16:22:00,513 INFO L175 Difference]: Start difference. First operand has 223 places, 283 transitions, 2949 flow. Second operand 9 states and 170 transitions. [2024-06-20 16:22:00,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 306 transitions, 3699 flow [2024-06-20 16:22:01,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 306 transitions, 3527 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-20 16:22:01,147 INFO L231 Difference]: Finished difference. Result has 227 places, 288 transitions, 3030 flow [2024-06-20 16:22:01,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2779, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3030, PETRI_PLACES=227, PETRI_TRANSITIONS=288} [2024-06-20 16:22:01,147 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 184 predicate places. [2024-06-20 16:22:01,147 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 288 transitions, 3030 flow [2024-06-20 16:22:01,147 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) [2024-06-20 16:22:01,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:01,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:01,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-20 16:22:01,148 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:01,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:01,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1523546966, now seen corresponding path program 4 times [2024-06-20 16:22:01,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:01,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212822338] [2024-06-20 16:22:01,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:01,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:01,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:01,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:01,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212822338] [2024-06-20 16:22:01,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212822338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:01,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:01,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:01,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651422932] [2024-06-20 16:22:01,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:01,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:01,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:01,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:01,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:02,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:22:02,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 288 transitions, 3030 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:02,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:02,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:22:02,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:02,834 INFO L124 PetriNetUnfolderBase]: 2484/3926 cut-off events. [2024-06-20 16:22:02,834 INFO L125 PetriNetUnfolderBase]: For 449286/449288 co-relation queries the response was YES. [2024-06-20 16:22:02,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36723 conditions, 3926 events. 2484/3926 cut-off events. For 449286/449288 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 21962 event pairs, 612 based on Foata normal form. 2/3921 useless extension candidates. Maximal degree in co-relation 36618. Up to 3643 conditions per place. [2024-06-20 16:22:02,877 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 274 selfloop transitions, 27 changer transitions 0/306 dead transitions. [2024-06-20 16:22:02,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 306 transitions, 3692 flow [2024-06-20 16:22:02,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:02,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:02,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-20 16:22:02,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2024-06-20 16:22:02,879 INFO L175 Difference]: Start difference. First operand has 227 places, 288 transitions, 3030 flow. Second operand 8 states and 146 transitions. [2024-06-20 16:22:02,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 306 transitions, 3692 flow [2024-06-20 16:22:03,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 306 transitions, 3480 flow, removed 65 selfloop flow, removed 5 redundant places. [2024-06-20 16:22:03,579 INFO L231 Difference]: Finished difference. Result has 230 places, 288 transitions, 2878 flow [2024-06-20 16:22:03,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2818, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2878, PETRI_PLACES=230, PETRI_TRANSITIONS=288} [2024-06-20 16:22:03,580 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 187 predicate places. [2024-06-20 16:22:03,580 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 288 transitions, 2878 flow [2024-06-20 16:22:03,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:03,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:03,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:03,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-20 16:22:03,581 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:03,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:03,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1286095654, now seen corresponding path program 5 times [2024-06-20 16:22:03,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:03,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444292435] [2024-06-20 16:22:03,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:03,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:04,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:04,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:04,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444292435] [2024-06-20 16:22:04,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444292435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:04,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:04,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:04,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712028630] [2024-06-20 16:22:04,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:04,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:04,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:04,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:04,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:04,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:22:04,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 288 transitions, 2878 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:04,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:04,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:22:04,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:05,175 INFO L124 PetriNetUnfolderBase]: 2510/3974 cut-off events. [2024-06-20 16:22:05,175 INFO L125 PetriNetUnfolderBase]: For 465841/465843 co-relation queries the response was YES. [2024-06-20 16:22:05,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37179 conditions, 3974 events. 2510/3974 cut-off events. For 465841/465843 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 22417 event pairs, 592 based on Foata normal form. 2/3969 useless extension candidates. Maximal degree in co-relation 37072. Up to 3610 conditions per place. [2024-06-20 16:22:05,215 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 260 selfloop transitions, 46 changer transitions 0/311 dead transitions. [2024-06-20 16:22:05,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 311 transitions, 3820 flow [2024-06-20 16:22:05,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:05,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:05,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-20 16:22:05,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44345238095238093 [2024-06-20 16:22:05,217 INFO L175 Difference]: Start difference. First operand has 230 places, 288 transitions, 2878 flow. Second operand 8 states and 149 transitions. [2024-06-20 16:22:05,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 311 transitions, 3820 flow [2024-06-20 16:22:05,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 311 transitions, 3615 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-20 16:22:05,826 INFO L231 Difference]: Finished difference. Result has 229 places, 294 transitions, 2917 flow [2024-06-20 16:22:05,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2673, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2917, PETRI_PLACES=229, PETRI_TRANSITIONS=294} [2024-06-20 16:22:05,826 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 186 predicate places. [2024-06-20 16:22:05,827 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 294 transitions, 2917 flow [2024-06-20 16:22:05,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:05,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:05,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:05,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-20 16:22:05,827 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:05,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:05,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1878225716, now seen corresponding path program 6 times [2024-06-20 16:22:05,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:05,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609144686] [2024-06-20 16:22:05,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:05,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:06,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:06,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:06,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609144686] [2024-06-20 16:22:06,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609144686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:06,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:06,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:06,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063678829] [2024-06-20 16:22:06,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:06,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:06,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:06,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:06,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:06,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:22:06,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 294 transitions, 2917 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:06,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:06,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:22:06,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:07,421 INFO L124 PetriNetUnfolderBase]: 2504/3968 cut-off events. [2024-06-20 16:22:07,421 INFO L125 PetriNetUnfolderBase]: For 471942/471944 co-relation queries the response was YES. [2024-06-20 16:22:07,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37136 conditions, 3968 events. 2504/3968 cut-off events. For 471942/471944 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 22443 event pairs, 587 based on Foata normal form. 2/3963 useless extension candidates. Maximal degree in co-relation 37027. Up to 3605 conditions per place. [2024-06-20 16:22:07,463 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 257 selfloop transitions, 48 changer transitions 0/310 dead transitions. [2024-06-20 16:22:07,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 310 transitions, 3589 flow [2024-06-20 16:22:07,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:07,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:07,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-20 16:22:07,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-20 16:22:07,465 INFO L175 Difference]: Start difference. First operand has 229 places, 294 transitions, 2917 flow. Second operand 8 states and 148 transitions. [2024-06-20 16:22:07,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 310 transitions, 3589 flow [2024-06-20 16:22:08,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 310 transitions, 3421 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-20 16:22:08,186 INFO L231 Difference]: Finished difference. Result has 232 places, 294 transitions, 2851 flow [2024-06-20 16:22:08,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2749, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2851, PETRI_PLACES=232, PETRI_TRANSITIONS=294} [2024-06-20 16:22:08,187 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 189 predicate places. [2024-06-20 16:22:08,187 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 294 transitions, 2851 flow [2024-06-20 16:22:08,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:08,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:08,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:08,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-20 16:22:08,187 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:08,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:08,187 INFO L85 PathProgramCache]: Analyzing trace with hash 530618356, now seen corresponding path program 7 times [2024-06-20 16:22:08,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:08,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878523571] [2024-06-20 16:22:08,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:08,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:09,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:09,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:09,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878523571] [2024-06-20 16:22:09,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878523571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:09,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:09,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:09,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483820379] [2024-06-20 16:22:09,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:09,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:09,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:09,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:09,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:09,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:22:09,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 294 transitions, 2851 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:09,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:09,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:22:09,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:09,813 INFO L124 PetriNetUnfolderBase]: 2508/3994 cut-off events. [2024-06-20 16:22:09,813 INFO L125 PetriNetUnfolderBase]: For 483907/483912 co-relation queries the response was YES. [2024-06-20 16:22:09,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37150 conditions, 3994 events. 2508/3994 cut-off events. For 483907/483912 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 22773 event pairs, 571 based on Foata normal form. 6/3992 useless extension candidates. Maximal degree in co-relation 37040. Up to 3302 conditions per place. [2024-06-20 16:22:09,859 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 204 selfloop transitions, 104 changer transitions 0/313 dead transitions. [2024-06-20 16:22:09,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 313 transitions, 3892 flow [2024-06-20 16:22:09,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:09,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:09,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-20 16:22:09,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494047619047619 [2024-06-20 16:22:09,860 INFO L175 Difference]: Start difference. First operand has 232 places, 294 transitions, 2851 flow. Second operand 8 states and 151 transitions. [2024-06-20 16:22:09,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 313 transitions, 3892 flow [2024-06-20 16:22:10,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 313 transitions, 3792 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-20 16:22:10,677 INFO L231 Difference]: Finished difference. Result has 233 places, 297 transitions, 3038 flow [2024-06-20 16:22:10,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2751, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3038, PETRI_PLACES=233, PETRI_TRANSITIONS=297} [2024-06-20 16:22:10,678 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 190 predicate places. [2024-06-20 16:22:10,678 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 297 transitions, 3038 flow [2024-06-20 16:22:10,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:10,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:10,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:10,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-20 16:22:10,678 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:10,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:10,679 INFO L85 PathProgramCache]: Analyzing trace with hash 183170478, now seen corresponding path program 8 times [2024-06-20 16:22:10,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:10,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373722497] [2024-06-20 16:22:10,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:10,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:11,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:11,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:11,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373722497] [2024-06-20 16:22:11,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373722497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:11,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:11,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:11,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644095733] [2024-06-20 16:22:11,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:11,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:11,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:11,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:11,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:11,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:22:11,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 297 transitions, 3038 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:11,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:11,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:22:11,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:12,346 INFO L124 PetriNetUnfolderBase]: 2550/4054 cut-off events. [2024-06-20 16:22:12,346 INFO L125 PetriNetUnfolderBase]: For 503129/503134 co-relation queries the response was YES. [2024-06-20 16:22:12,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38429 conditions, 4054 events. 2550/4054 cut-off events. For 503129/503134 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 23131 event pairs, 603 based on Foata normal form. 6/4052 useless extension candidates. Maximal degree in co-relation 38318. Up to 3332 conditions per place. [2024-06-20 16:22:12,392 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 199 selfloop transitions, 118 changer transitions 0/322 dead transitions. [2024-06-20 16:22:12,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 322 transitions, 4214 flow [2024-06-20 16:22:12,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:22:12,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:22:12,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-20 16:22:12,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312169312169312 [2024-06-20 16:22:12,394 INFO L175 Difference]: Start difference. First operand has 233 places, 297 transitions, 3038 flow. Second operand 9 states and 163 transitions. [2024-06-20 16:22:12,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 322 transitions, 4214 flow [2024-06-20 16:22:13,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 322 transitions, 3965 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-20 16:22:13,159 INFO L231 Difference]: Finished difference. Result has 238 places, 304 transitions, 3220 flow [2024-06-20 16:22:13,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2797, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3220, PETRI_PLACES=238, PETRI_TRANSITIONS=304} [2024-06-20 16:22:13,159 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 195 predicate places. [2024-06-20 16:22:13,160 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 304 transitions, 3220 flow [2024-06-20 16:22:13,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:13,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:13,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:13,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-20 16:22:13,160 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:13,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:13,161 INFO L85 PathProgramCache]: Analyzing trace with hash 302924596, now seen corresponding path program 9 times [2024-06-20 16:22:13,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:13,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042765357] [2024-06-20 16:22:13,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:13,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:13,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:13,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:13,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042765357] [2024-06-20 16:22:13,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042765357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:13,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:13,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:13,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897672131] [2024-06-20 16:22:13,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:13,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:13,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:13,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:13,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:14,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:22:14,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 304 transitions, 3220 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:14,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:14,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:22:14,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:14,833 INFO L124 PetriNetUnfolderBase]: 2540/4040 cut-off events. [2024-06-20 16:22:14,833 INFO L125 PetriNetUnfolderBase]: For 509132/509137 co-relation queries the response was YES. [2024-06-20 16:22:14,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38355 conditions, 4040 events. 2540/4040 cut-off events. For 509132/509137 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 23032 event pairs, 599 based on Foata normal form. 4/4036 useless extension candidates. Maximal degree in co-relation 38242. Up to 3324 conditions per place. [2024-06-20 16:22:14,875 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 196 selfloop transitions, 119 changer transitions 0/320 dead transitions. [2024-06-20 16:22:14,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 320 transitions, 4214 flow [2024-06-20 16:22:14,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:14,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:14,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-20 16:22:14,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494047619047619 [2024-06-20 16:22:14,876 INFO L175 Difference]: Start difference. First operand has 238 places, 304 transitions, 3220 flow. Second operand 8 states and 151 transitions. [2024-06-20 16:22:14,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 320 transitions, 4214 flow [2024-06-20 16:22:15,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 320 transitions, 3995 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-20 16:22:15,702 INFO L231 Difference]: Finished difference. Result has 242 places, 304 transitions, 3245 flow [2024-06-20 16:22:15,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3001, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3245, PETRI_PLACES=242, PETRI_TRANSITIONS=304} [2024-06-20 16:22:15,703 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 199 predicate places. [2024-06-20 16:22:15,703 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 304 transitions, 3245 flow [2024-06-20 16:22:15,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:15,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:15,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:15,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-20 16:22:15,704 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:15,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:15,704 INFO L85 PathProgramCache]: Analyzing trace with hash 175806738, now seen corresponding path program 10 times [2024-06-20 16:22:15,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:15,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422468437] [2024-06-20 16:22:15,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:15,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:16,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:16,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:16,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422468437] [2024-06-20 16:22:16,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422468437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:16,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:16,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:16,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335798155] [2024-06-20 16:22:16,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:16,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:16,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:16,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:16,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:16,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:22:16,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 304 transitions, 3245 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:16,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:16,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:22:16,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:17,293 INFO L124 PetriNetUnfolderBase]: 2550/4056 cut-off events. [2024-06-20 16:22:17,293 INFO L125 PetriNetUnfolderBase]: For 521707/521712 co-relation queries the response was YES. [2024-06-20 16:22:17,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38616 conditions, 4056 events. 2550/4056 cut-off events. For 521707/521712 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 23152 event pairs, 607 based on Foata normal form. 4/4052 useless extension candidates. Maximal degree in co-relation 38502. Up to 3330 conditions per place. [2024-06-20 16:22:17,338 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 196 selfloop transitions, 121 changer transitions 0/322 dead transitions. [2024-06-20 16:22:17,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 322 transitions, 4174 flow [2024-06-20 16:22:17,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:17,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:17,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-20 16:22:17,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44345238095238093 [2024-06-20 16:22:17,339 INFO L175 Difference]: Start difference. First operand has 242 places, 304 transitions, 3245 flow. Second operand 8 states and 149 transitions. [2024-06-20 16:22:17,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 322 transitions, 4174 flow [2024-06-20 16:22:18,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 322 transitions, 3777 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-20 16:22:18,365 INFO L231 Difference]: Finished difference. Result has 240 places, 307 transitions, 3175 flow [2024-06-20 16:22:18,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2861, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3175, PETRI_PLACES=240, PETRI_TRANSITIONS=307} [2024-06-20 16:22:18,366 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 197 predicate places. [2024-06-20 16:22:18,366 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 307 transitions, 3175 flow [2024-06-20 16:22:18,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:18,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:18,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:18,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-20 16:22:18,367 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:18,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:18,367 INFO L85 PathProgramCache]: Analyzing trace with hash 125377366, now seen corresponding path program 11 times [2024-06-20 16:22:18,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:18,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770360900] [2024-06-20 16:22:18,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:18,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:19,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:19,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:19,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770360900] [2024-06-20 16:22:19,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770360900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:19,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:19,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:19,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692073305] [2024-06-20 16:22:19,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:19,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:19,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:19,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:19,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:19,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:22:19,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 307 transitions, 3175 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:19,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:19,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:22:19,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:20,007 INFO L124 PetriNetUnfolderBase]: 2538/4034 cut-off events. [2024-06-20 16:22:20,007 INFO L125 PetriNetUnfolderBase]: For 527355/527360 co-relation queries the response was YES. [2024-06-20 16:22:20,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38073 conditions, 4034 events. 2538/4034 cut-off events. For 527355/527360 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 22980 event pairs, 587 based on Foata normal form. 6/4032 useless extension candidates. Maximal degree in co-relation 37960. Up to 3322 conditions per place. [2024-06-20 16:22:20,055 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 208 selfloop transitions, 109 changer transitions 0/322 dead transitions. [2024-06-20 16:22:20,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 322 transitions, 4027 flow [2024-06-20 16:22:20,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:20,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:20,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-20 16:22:20,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494047619047619 [2024-06-20 16:22:20,057 INFO L175 Difference]: Start difference. First operand has 240 places, 307 transitions, 3175 flow. Second operand 8 states and 151 transitions. [2024-06-20 16:22:20,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 322 transitions, 4027 flow [2024-06-20 16:22:20,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 322 transitions, 3747 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-20 16:22:20,868 INFO L231 Difference]: Finished difference. Result has 243 places, 307 transitions, 3120 flow [2024-06-20 16:22:20,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2895, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3120, PETRI_PLACES=243, PETRI_TRANSITIONS=307} [2024-06-20 16:22:20,868 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 200 predicate places. [2024-06-20 16:22:20,868 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 307 transitions, 3120 flow [2024-06-20 16:22:20,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:20,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:20,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:20,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-20 16:22:20,869 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:20,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:20,869 INFO L85 PathProgramCache]: Analyzing trace with hash 125614516, now seen corresponding path program 12 times [2024-06-20 16:22:20,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:20,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111868307] [2024-06-20 16:22:20,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:20,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:20,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:21,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:21,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:21,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111868307] [2024-06-20 16:22:21,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111868307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:21,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:21,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:21,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582359222] [2024-06-20 16:22:21,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:21,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:21,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:21,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:21,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:21,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:22:21,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 307 transitions, 3120 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:21,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:21,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:22:21,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:22,532 INFO L124 PetriNetUnfolderBase]: 2522/4010 cut-off events. [2024-06-20 16:22:22,532 INFO L125 PetriNetUnfolderBase]: For 527172/527177 co-relation queries the response was YES. [2024-06-20 16:22:22,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37603 conditions, 4010 events. 2522/4010 cut-off events. For 527172/527177 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 22838 event pairs, 585 based on Foata normal form. 6/4008 useless extension candidates. Maximal degree in co-relation 37489. Up to 3309 conditions per place. [2024-06-20 16:22:22,579 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 210 selfloop transitions, 106 changer transitions 0/321 dead transitions. [2024-06-20 16:22:22,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 321 transitions, 3816 flow [2024-06-20 16:22:22,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:22,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:22,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-20 16:22:22,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-20 16:22:22,580 INFO L175 Difference]: Start difference. First operand has 243 places, 307 transitions, 3120 flow. Second operand 8 states and 150 transitions. [2024-06-20 16:22:22,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 321 transitions, 3816 flow [2024-06-20 16:22:23,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 321 transitions, 3456 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-20 16:22:23,431 INFO L231 Difference]: Finished difference. Result has 243 places, 307 transitions, 2981 flow [2024-06-20 16:22:23,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2760, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2981, PETRI_PLACES=243, PETRI_TRANSITIONS=307} [2024-06-20 16:22:23,431 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 200 predicate places. [2024-06-20 16:22:23,431 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 307 transitions, 2981 flow [2024-06-20 16:22:23,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:23,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:23,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:23,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-20 16:22:23,432 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:23,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:23,432 INFO L85 PathProgramCache]: Analyzing trace with hash 125254048, now seen corresponding path program 4 times [2024-06-20 16:22:23,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:23,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620925512] [2024-06-20 16:22:23,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:23,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:24,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:24,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:24,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620925512] [2024-06-20 16:22:24,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620925512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:24,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:24,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:24,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869494923] [2024-06-20 16:22:24,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:24,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:24,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:24,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:24,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:24,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:22:24,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 307 transitions, 2981 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) [2024-06-20 16:22:24,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:24,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:22:24,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:25,112 INFO L124 PetriNetUnfolderBase]: 2450/3962 cut-off events. [2024-06-20 16:22:25,112 INFO L125 PetriNetUnfolderBase]: For 567661/567668 co-relation queries the response was YES. [2024-06-20 16:22:25,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37540 conditions, 3962 events. 2450/3962 cut-off events. For 567661/567668 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 23216 event pairs, 560 based on Foata normal form. 16/3930 useless extension candidates. Maximal degree in co-relation 37425. Up to 3325 conditions per place. [2024-06-20 16:22:25,154 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 239 selfloop transitions, 56 changer transitions 0/327 dead transitions. [2024-06-20 16:22:25,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 327 transitions, 3783 flow [2024-06-20 16:22:25,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:25,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:25,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-20 16:22:25,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-20 16:22:25,155 INFO L175 Difference]: Start difference. First operand has 243 places, 307 transitions, 2981 flow. Second operand 8 states and 156 transitions. [2024-06-20 16:22:25,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 327 transitions, 3783 flow [2024-06-20 16:22:25,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 327 transitions, 3509 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-20 16:22:25,842 INFO L231 Difference]: Finished difference. Result has 242 places, 309 transitions, 2915 flow [2024-06-20 16:22:25,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2707, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2915, PETRI_PLACES=242, PETRI_TRANSITIONS=309} [2024-06-20 16:22:25,843 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 199 predicate places. [2024-06-20 16:22:25,843 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 309 transitions, 2915 flow [2024-06-20 16:22:25,843 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) [2024-06-20 16:22:25,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:25,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:25,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-20 16:22:25,844 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:25,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:25,844 INFO L85 PathProgramCache]: Analyzing trace with hash 137229410, now seen corresponding path program 5 times [2024-06-20 16:22:25,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:25,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108473606] [2024-06-20 16:22:25,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:25,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:26,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:26,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108473606] [2024-06-20 16:22:26,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108473606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:26,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:26,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:22:26,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206519961] [2024-06-20 16:22:26,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:26,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:22:26,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:26,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:22:26,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:22:26,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:22:26,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 309 transitions, 2915 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:26,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:26,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:22:26,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:27,683 INFO L124 PetriNetUnfolderBase]: 2640/4184 cut-off events. [2024-06-20 16:22:27,683 INFO L125 PetriNetUnfolderBase]: For 573866/573871 co-relation queries the response was YES. [2024-06-20 16:22:27,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39909 conditions, 4184 events. 2640/4184 cut-off events. For 573866/573871 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 23839 event pairs, 563 based on Foata normal form. 5/4181 useless extension candidates. Maximal degree in co-relation 39793. Up to 3180 conditions per place. [2024-06-20 16:22:27,726 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 212 selfloop transitions, 136 changer transitions 0/353 dead transitions. [2024-06-20 16:22:27,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 353 transitions, 4731 flow [2024-06-20 16:22:27,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:22:27,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:22:27,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-20 16:22:27,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-20 16:22:27,727 INFO L175 Difference]: Start difference. First operand has 242 places, 309 transitions, 2915 flow. Second operand 9 states and 171 transitions. [2024-06-20 16:22:27,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 353 transitions, 4731 flow [2024-06-20 16:22:28,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 353 transitions, 4567 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-20 16:22:28,493 INFO L231 Difference]: Finished difference. Result has 248 places, 332 transitions, 3644 flow [2024-06-20 16:22:28,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2751, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3644, PETRI_PLACES=248, PETRI_TRANSITIONS=332} [2024-06-20 16:22:28,494 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 205 predicate places. [2024-06-20 16:22:28,494 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 332 transitions, 3644 flow [2024-06-20 16:22:28,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:28,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:28,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:28,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-20 16:22:28,494 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:28,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:28,494 INFO L85 PathProgramCache]: Analyzing trace with hash 819904408, now seen corresponding path program 2 times [2024-06-20 16:22:28,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:28,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928625589] [2024-06-20 16:22:28,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:28,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:29,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:29,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:29,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928625589] [2024-06-20 16:22:29,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928625589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:29,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:29,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:22:29,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742121336] [2024-06-20 16:22:29,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:29,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:22:29,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:29,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:22:29,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:22:29,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:22:29,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 332 transitions, 3644 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:29,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:29,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:22:29,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:30,239 INFO L124 PetriNetUnfolderBase]: 2653/4181 cut-off events. [2024-06-20 16:22:30,239 INFO L125 PetriNetUnfolderBase]: For 591313/591321 co-relation queries the response was YES. [2024-06-20 16:22:30,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41585 conditions, 4181 events. 2653/4181 cut-off events. For 591313/591321 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 23523 event pairs, 629 based on Foata normal form. 7/4185 useless extension candidates. Maximal degree in co-relation 41465. Up to 3908 conditions per place. [2024-06-20 16:22:30,292 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 300 selfloop transitions, 50 changer transitions 0/355 dead transitions. [2024-06-20 16:22:30,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 355 transitions, 5042 flow [2024-06-20 16:22:30,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:22:30,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:22:30,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-20 16:22:30,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-06-20 16:22:30,296 INFO L175 Difference]: Start difference. First operand has 248 places, 332 transitions, 3644 flow. Second operand 9 states and 156 transitions. [2024-06-20 16:22:30,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 355 transitions, 5042 flow [2024-06-20 16:22:31,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 355 transitions, 4809 flow, removed 90 selfloop flow, removed 3 redundant places. [2024-06-20 16:22:31,513 INFO L231 Difference]: Finished difference. Result has 254 places, 341 transitions, 3865 flow [2024-06-20 16:22:31,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3411, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3865, PETRI_PLACES=254, PETRI_TRANSITIONS=341} [2024-06-20 16:22:31,514 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 211 predicate places. [2024-06-20 16:22:31,514 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 341 transitions, 3865 flow [2024-06-20 16:22:31,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:31,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:31,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:31,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-20 16:22:31,514 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:31,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:31,514 INFO L85 PathProgramCache]: Analyzing trace with hash 171398662, now seen corresponding path program 6 times [2024-06-20 16:22:31,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:31,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755908542] [2024-06-20 16:22:31,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:31,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:32,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:32,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:32,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755908542] [2024-06-20 16:22:32,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755908542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:32,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:32,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:22:32,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087917447] [2024-06-20 16:22:32,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:32,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:22:32,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:32,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:22:32,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:22:32,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:22:32,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 341 transitions, 3865 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:32,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:32,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:22:32,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:33,445 INFO L124 PetriNetUnfolderBase]: 2692/4263 cut-off events. [2024-06-20 16:22:33,445 INFO L125 PetriNetUnfolderBase]: For 617954/617959 co-relation queries the response was YES. [2024-06-20 16:22:33,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42211 conditions, 4263 events. 2692/4263 cut-off events. For 617954/617959 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 24340 event pairs, 600 based on Foata normal form. 5/4260 useless extension candidates. Maximal degree in co-relation 42089. Up to 3233 conditions per place. [2024-06-20 16:22:33,499 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 231 selfloop transitions, 136 changer transitions 0/372 dead transitions. [2024-06-20 16:22:33,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 372 transitions, 5714 flow [2024-06-20 16:22:33,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:22:33,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:22:33,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-20 16:22:33,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-06-20 16:22:33,500 INFO L175 Difference]: Start difference. First operand has 254 places, 341 transitions, 3865 flow. Second operand 9 states and 174 transitions. [2024-06-20 16:22:33,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 372 transitions, 5714 flow [2024-06-20 16:22:34,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 372 transitions, 5566 flow, removed 63 selfloop flow, removed 4 redundant places. [2024-06-20 16:22:34,470 INFO L231 Difference]: Finished difference. Result has 261 places, 351 transitions, 4365 flow [2024-06-20 16:22:34,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3717, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4365, PETRI_PLACES=261, PETRI_TRANSITIONS=351} [2024-06-20 16:22:34,470 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 218 predicate places. [2024-06-20 16:22:34,470 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 351 transitions, 4365 flow [2024-06-20 16:22:34,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:34,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:34,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:34,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-20 16:22:34,471 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:34,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:34,471 INFO L85 PathProgramCache]: Analyzing trace with hash 420048614, now seen corresponding path program 7 times [2024-06-20 16:22:34,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:34,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398298961] [2024-06-20 16:22:34,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:34,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:35,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:35,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:35,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398298961] [2024-06-20 16:22:35,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398298961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:35,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:35,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:22:35,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060939190] [2024-06-20 16:22:35,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:35,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:22:35,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:35,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:22:35,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:22:35,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:22:35,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 351 transitions, 4365 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:35,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:35,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:22:35,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:36,356 INFO L124 PetriNetUnfolderBase]: 2699/4272 cut-off events. [2024-06-20 16:22:36,356 INFO L125 PetriNetUnfolderBase]: For 633464/633469 co-relation queries the response was YES. [2024-06-20 16:22:36,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43186 conditions, 4272 events. 2699/4272 cut-off events. For 633464/633469 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 24319 event pairs, 603 based on Foata normal form. 5/4269 useless extension candidates. Maximal degree in co-relation 43060. Up to 3241 conditions per place. [2024-06-20 16:22:36,409 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 216 selfloop transitions, 153 changer transitions 0/374 dead transitions. [2024-06-20 16:22:36,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 374 transitions, 5821 flow [2024-06-20 16:22:36,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:22:36,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:22:36,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-20 16:22:36,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-06-20 16:22:36,410 INFO L175 Difference]: Start difference. First operand has 261 places, 351 transitions, 4365 flow. Second operand 9 states and 172 transitions. [2024-06-20 16:22:36,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 374 transitions, 5821 flow [2024-06-20 16:22:37,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 374 transitions, 5496 flow, removed 82 selfloop flow, removed 4 redundant places. [2024-06-20 16:22:37,726 INFO L231 Difference]: Finished difference. Result has 266 places, 355 transitions, 4499 flow [2024-06-20 16:22:37,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4053, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4499, PETRI_PLACES=266, PETRI_TRANSITIONS=355} [2024-06-20 16:22:37,726 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 223 predicate places. [2024-06-20 16:22:37,726 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 355 transitions, 4499 flow [2024-06-20 16:22:37,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:37,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:37,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:37,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-20 16:22:37,727 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:37,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:37,727 INFO L85 PathProgramCache]: Analyzing trace with hash 171411186, now seen corresponding path program 3 times [2024-06-20 16:22:37,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:37,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251266204] [2024-06-20 16:22:37,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:37,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:38,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:38,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:38,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251266204] [2024-06-20 16:22:38,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251266204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:38,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:38,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:22:38,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677945923] [2024-06-20 16:22:38,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:38,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:22:38,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:38,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:22:38,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:22:38,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:22:38,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 355 transitions, 4499 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:38,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:38,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:22:38,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:39,496 INFO L124 PetriNetUnfolderBase]: 2696/4249 cut-off events. [2024-06-20 16:22:39,496 INFO L125 PetriNetUnfolderBase]: For 637666/637674 co-relation queries the response was YES. [2024-06-20 16:22:39,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43103 conditions, 4249 events. 2696/4249 cut-off events. For 637666/637674 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 23992 event pairs, 635 based on Foata normal form. 7/4253 useless extension candidates. Maximal degree in co-relation 42976. Up to 3969 conditions per place. [2024-06-20 16:22:39,552 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 314 selfloop transitions, 49 changer transitions 0/368 dead transitions. [2024-06-20 16:22:39,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 368 transitions, 5425 flow [2024-06-20 16:22:39,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:22:39,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:22:39,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-20 16:22:39,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-06-20 16:22:39,553 INFO L175 Difference]: Start difference. First operand has 266 places, 355 transitions, 4499 flow. Second operand 9 states and 156 transitions. [2024-06-20 16:22:39,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 368 transitions, 5425 flow [2024-06-20 16:22:40,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 368 transitions, 5018 flow, removed 85 selfloop flow, removed 6 redundant places. [2024-06-20 16:22:40,821 INFO L231 Difference]: Finished difference. Result has 269 places, 355 transitions, 4196 flow [2024-06-20 16:22:40,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4092, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4196, PETRI_PLACES=269, PETRI_TRANSITIONS=355} [2024-06-20 16:22:40,821 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 226 predicate places. [2024-06-20 16:22:40,821 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 355 transitions, 4196 flow [2024-06-20 16:22:40,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:40,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:40,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:40,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-20 16:22:40,822 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:40,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:40,823 INFO L85 PathProgramCache]: Analyzing trace with hash 125623010, now seen corresponding path program 8 times [2024-06-20 16:22:40,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:40,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814227107] [2024-06-20 16:22:40,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:40,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:41,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:41,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:41,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814227107] [2024-06-20 16:22:41,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814227107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:41,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:41,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:22:41,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649007577] [2024-06-20 16:22:41,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:41,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:22:41,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:41,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:22:41,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:22:41,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:22:41,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 355 transitions, 4196 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:41,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:41,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:22:41,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:42,636 INFO L124 PetriNetUnfolderBase]: 2691/4263 cut-off events. [2024-06-20 16:22:42,637 INFO L125 PetriNetUnfolderBase]: For 643305/643310 co-relation queries the response was YES. [2024-06-20 16:22:42,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42343 conditions, 4263 events. 2691/4263 cut-off events. For 643305/643310 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 24342 event pairs, 600 based on Foata normal form. 5/4260 useless extension candidates. Maximal degree in co-relation 42215. Up to 3235 conditions per place. [2024-06-20 16:22:42,694 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 231 selfloop transitions, 138 changer transitions 0/374 dead transitions. [2024-06-20 16:22:42,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 374 transitions, 5520 flow [2024-06-20 16:22:42,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:22:42,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:22:42,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-20 16:22:42,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-06-20 16:22:42,696 INFO L175 Difference]: Start difference. First operand has 269 places, 355 transitions, 4196 flow. Second operand 9 states and 172 transitions. [2024-06-20 16:22:42,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 374 transitions, 5520 flow [2024-06-20 16:22:44,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 374 transitions, 5276 flow, removed 63 selfloop flow, removed 8 redundant places. [2024-06-20 16:22:44,229 INFO L231 Difference]: Finished difference. Result has 270 places, 355 transitions, 4236 flow [2024-06-20 16:22:44,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3952, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4236, PETRI_PLACES=270, PETRI_TRANSITIONS=355} [2024-06-20 16:22:44,229 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 227 predicate places. [2024-06-20 16:22:44,229 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 355 transitions, 4236 flow [2024-06-20 16:22:44,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:44,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:44,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:44,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-20 16:22:44,230 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:44,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:44,230 INFO L85 PathProgramCache]: Analyzing trace with hash 665004410, now seen corresponding path program 9 times [2024-06-20 16:22:44,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:44,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949602653] [2024-06-20 16:22:44,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:44,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:45,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:45,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:45,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949602653] [2024-06-20 16:22:45,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949602653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:45,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:45,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:22:45,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015546408] [2024-06-20 16:22:45,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:45,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:22:45,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:45,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:22:45,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:22:45,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:22:45,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 355 transitions, 4236 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:45,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:45,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:22:45,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:46,024 INFO L124 PetriNetUnfolderBase]: 2742/4346 cut-off events. [2024-06-20 16:22:46,024 INFO L125 PetriNetUnfolderBase]: For 674316/674321 co-relation queries the response was YES. [2024-06-20 16:22:46,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43910 conditions, 4346 events. 2742/4346 cut-off events. For 674316/674321 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 24894 event pairs, 568 based on Foata normal form. 5/4343 useless extension candidates. Maximal degree in co-relation 43781. Up to 3278 conditions per place. [2024-06-20 16:22:46,080 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 228 selfloop transitions, 149 changer transitions 0/382 dead transitions. [2024-06-20 16:22:46,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 382 transitions, 5809 flow [2024-06-20 16:22:46,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:22:46,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:22:46,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-20 16:22:46,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-20 16:22:46,081 INFO L175 Difference]: Start difference. First operand has 270 places, 355 transitions, 4236 flow. Second operand 9 states and 171 transitions. [2024-06-20 16:22:46,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 382 transitions, 5809 flow [2024-06-20 16:22:47,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 382 transitions, 5518 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-20 16:22:47,311 INFO L231 Difference]: Finished difference. Result has 273 places, 363 transitions, 4498 flow [2024-06-20 16:22:47,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3957, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4498, PETRI_PLACES=273, PETRI_TRANSITIONS=363} [2024-06-20 16:22:47,311 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 230 predicate places. [2024-06-20 16:22:47,311 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 363 transitions, 4498 flow [2024-06-20 16:22:47,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:47,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:47,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:47,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-20 16:22:47,312 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:47,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:47,312 INFO L85 PathProgramCache]: Analyzing trace with hash 538944274, now seen corresponding path program 4 times [2024-06-20 16:22:47,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:47,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347700193] [2024-06-20 16:22:47,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:47,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:48,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:48,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:48,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347700193] [2024-06-20 16:22:48,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347700193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:48,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:48,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:22:48,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290896464] [2024-06-20 16:22:48,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:48,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:22:48,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:48,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:22:48,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:22:48,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:22:48,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 363 transitions, 4498 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:48,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:48,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:22:48,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:49,330 INFO L124 PetriNetUnfolderBase]: 2747/4329 cut-off events. [2024-06-20 16:22:49,330 INFO L125 PetriNetUnfolderBase]: For 683542/683542 co-relation queries the response was YES. [2024-06-20 16:22:49,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44259 conditions, 4329 events. 2747/4329 cut-off events. For 683542/683542 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 24531 event pairs, 636 based on Foata normal form. 1/4328 useless extension candidates. Maximal degree in co-relation 44128. Up to 4095 conditions per place. [2024-06-20 16:22:49,381 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 353 selfloop transitions, 20 changer transitions 0/378 dead transitions. [2024-06-20 16:22:49,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 378 transitions, 5384 flow [2024-06-20 16:22:49,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:22:49,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:22:49,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-20 16:22:49,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-20 16:22:49,382 INFO L175 Difference]: Start difference. First operand has 273 places, 363 transitions, 4498 flow. Second operand 9 states and 147 transitions. [2024-06-20 16:22:49,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 378 transitions, 5384 flow [2024-06-20 16:22:50,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 378 transitions, 5039 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-20 16:22:50,524 INFO L231 Difference]: Finished difference. Result has 277 places, 366 transitions, 4313 flow [2024-06-20 16:22:50,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4153, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4313, PETRI_PLACES=277, PETRI_TRANSITIONS=366} [2024-06-20 16:22:50,525 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 234 predicate places. [2024-06-20 16:22:50,525 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 366 transitions, 4313 flow [2024-06-20 16:22:50,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:50,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:50,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:50,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-20 16:22:50,525 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:50,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:50,525 INFO L85 PathProgramCache]: Analyzing trace with hash 538929890, now seen corresponding path program 10 times [2024-06-20 16:22:50,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:50,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985784007] [2024-06-20 16:22:50,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:50,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:51,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:51,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985784007] [2024-06-20 16:22:51,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985784007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:51,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:51,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:22:51,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746183120] [2024-06-20 16:22:51,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:51,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:22:51,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:51,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:22:51,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:22:51,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:22:51,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 366 transitions, 4313 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:51,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:51,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:22:51,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:52,377 INFO L124 PetriNetUnfolderBase]: 2742/4345 cut-off events. [2024-06-20 16:22:52,378 INFO L125 PetriNetUnfolderBase]: For 691990/691995 co-relation queries the response was YES. [2024-06-20 16:22:52,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43437 conditions, 4345 events. 2742/4345 cut-off events. For 691990/691995 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 24881 event pairs, 564 based on Foata normal form. 5/4342 useless extension candidates. Maximal degree in co-relation 43305. Up to 3283 conditions per place. [2024-06-20 16:22:52,435 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 215 selfloop transitions, 164 changer transitions 0/384 dead transitions. [2024-06-20 16:22:52,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 384 transitions, 5499 flow [2024-06-20 16:22:52,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:22:52,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:22:52,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-20 16:22:52,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-20 16:22:52,437 INFO L175 Difference]: Start difference. First operand has 277 places, 366 transitions, 4313 flow. Second operand 9 states and 169 transitions. [2024-06-20 16:22:52,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 384 transitions, 5499 flow [2024-06-20 16:22:53,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 384 transitions, 5283 flow, removed 90 selfloop flow, removed 7 redundant places. [2024-06-20 16:22:53,854 INFO L231 Difference]: Finished difference. Result has 279 places, 366 transitions, 4433 flow [2024-06-20 16:22:53,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4097, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4433, PETRI_PLACES=279, PETRI_TRANSITIONS=366} [2024-06-20 16:22:53,855 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 236 predicate places. [2024-06-20 16:22:53,855 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 366 transitions, 4433 flow [2024-06-20 16:22:53,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:53,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:53,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:53,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-20 16:22:53,855 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:53,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:53,856 INFO L85 PathProgramCache]: Analyzing trace with hash 525524374, now seen corresponding path program 5 times [2024-06-20 16:22:53,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:53,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796657003] [2024-06-20 16:22:53,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:53,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:54,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:54,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:54,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796657003] [2024-06-20 16:22:54,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796657003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:54,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:54,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:22:54,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587339880] [2024-06-20 16:22:54,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:54,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:22:54,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:54,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:22:54,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:22:54,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:22:54,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 366 transitions, 4433 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:54,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:54,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:22:54,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:55,647 INFO L124 PetriNetUnfolderBase]: 2739/4323 cut-off events. [2024-06-20 16:22:55,647 INFO L125 PetriNetUnfolderBase]: For 697530/697538 co-relation queries the response was YES. [2024-06-20 16:22:55,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43929 conditions, 4323 events. 2739/4323 cut-off events. For 697530/697538 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 24532 event pairs, 640 based on Foata normal form. 7/4327 useless extension candidates. Maximal degree in co-relation 43796. Up to 4031 conditions per place. [2024-06-20 16:22:55,706 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 318 selfloop transitions, 55 changer transitions 0/378 dead transitions. [2024-06-20 16:22:55,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 378 transitions, 5211 flow [2024-06-20 16:22:55,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:22:55,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:22:55,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-20 16:22:55,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-20 16:22:55,707 INFO L175 Difference]: Start difference. First operand has 279 places, 366 transitions, 4433 flow. Second operand 9 states and 153 transitions. [2024-06-20 16:22:55,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 378 transitions, 5211 flow [2024-06-20 16:22:56,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 378 transitions, 4810 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-06-20 16:22:56,941 INFO L231 Difference]: Finished difference. Result has 280 places, 366 transitions, 4148 flow [2024-06-20 16:22:56,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4032, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4148, PETRI_PLACES=280, PETRI_TRANSITIONS=366} [2024-06-20 16:22:56,942 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 237 predicate places. [2024-06-20 16:22:56,942 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 366 transitions, 4148 flow [2024-06-20 16:22:56,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:56,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:56,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:56,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-20 16:22:56,942 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:56,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:56,943 INFO L85 PathProgramCache]: Analyzing trace with hash 2038619964, now seen corresponding path program 1 times [2024-06-20 16:22:56,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:56,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535463036] [2024-06-20 16:22:56,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:56,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:57,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:57,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:57,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535463036] [2024-06-20 16:22:57,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535463036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:57,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:57,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:57,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817301282] [2024-06-20 16:22:57,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:57,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:57,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:57,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:57,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:58,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-20 16:22:58,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 366 transitions, 4148 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) [2024-06-20 16:22:58,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:58,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-20 16:22:58,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:58,947 INFO L124 PetriNetUnfolderBase]: 2549/4135 cut-off events. [2024-06-20 16:22:58,947 INFO L125 PetriNetUnfolderBase]: For 719147/719149 co-relation queries the response was YES. [2024-06-20 16:22:58,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42382 conditions, 4135 events. 2549/4135 cut-off events. For 719147/719149 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 24404 event pairs, 519 based on Foata normal form. 2/4129 useless extension candidates. Maximal degree in co-relation 42249. Up to 3507 conditions per place. [2024-06-20 16:22:59,004 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 322 selfloop transitions, 15 changer transitions 0/390 dead transitions. [2024-06-20 16:22:59,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 390 transitions, 4946 flow [2024-06-20 16:22:59,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:59,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:59,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-20 16:22:59,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-20 16:22:59,005 INFO L175 Difference]: Start difference. First operand has 280 places, 366 transitions, 4148 flow. Second operand 8 states and 156 transitions. [2024-06-20 16:22:59,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 390 transitions, 4946 flow [2024-06-20 16:23:00,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 390 transitions, 4806 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-20 16:23:00,387 INFO L231 Difference]: Finished difference. Result has 280 places, 368 transitions, 4113 flow [2024-06-20 16:23:00,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4008, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4113, PETRI_PLACES=280, PETRI_TRANSITIONS=368} [2024-06-20 16:23:00,387 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 237 predicate places. [2024-06-20 16:23:00,387 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 368 transitions, 4113 flow [2024-06-20 16:23:00,387 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) [2024-06-20 16:23:00,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:00,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:00,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-20 16:23:00,388 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:23:00,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:00,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1873587248, now seen corresponding path program 2 times [2024-06-20 16:23:00,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:00,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285746901] [2024-06-20 16:23:00,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:00,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:01,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:01,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:01,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285746901] [2024-06-20 16:23:01,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285746901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:01,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:01,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:23:01,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788892034] [2024-06-20 16:23:01,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:01,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:23:01,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:01,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:23:01,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:23:01,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-20 16:23:01,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 368 transitions, 4113 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) [2024-06-20 16:23:01,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:01,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-20 16:23:01,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:02,501 INFO L124 PetriNetUnfolderBase]: 2553/4137 cut-off events. [2024-06-20 16:23:02,501 INFO L125 PetriNetUnfolderBase]: For 734706/734708 co-relation queries the response was YES. [2024-06-20 16:23:02,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42719 conditions, 4137 events. 2553/4137 cut-off events. For 734706/734708 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 24353 event pairs, 555 based on Foata normal form. 2/4127 useless extension candidates. Maximal degree in co-relation 42585. Up to 3528 conditions per place. [2024-06-20 16:23:02,555 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 319 selfloop transitions, 16 changer transitions 0/388 dead transitions. [2024-06-20 16:23:02,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 388 transitions, 4901 flow [2024-06-20 16:23:02,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:23:02,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:23:02,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-20 16:23:02,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-20 16:23:02,556 INFO L175 Difference]: Start difference. First operand has 280 places, 368 transitions, 4113 flow. Second operand 8 states and 153 transitions. [2024-06-20 16:23:02,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 388 transitions, 4901 flow [2024-06-20 16:23:04,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 388 transitions, 4812 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-20 16:23:04,240 INFO L231 Difference]: Finished difference. Result has 282 places, 370 transitions, 4135 flow [2024-06-20 16:23:04,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4024, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4135, PETRI_PLACES=282, PETRI_TRANSITIONS=370} [2024-06-20 16:23:04,240 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 239 predicate places. [2024-06-20 16:23:04,240 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 370 transitions, 4135 flow [2024-06-20 16:23:04,240 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) [2024-06-20 16:23:04,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:04,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:04,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-20 16:23:04,241 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:23:04,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:04,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1117494348, now seen corresponding path program 1 times [2024-06-20 16:23:04,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:04,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318381011] [2024-06-20 16:23:04,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:04,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:05,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:05,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:05,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318381011] [2024-06-20 16:23:05,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318381011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:05,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:05,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:05,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318282994] [2024-06-20 16:23:05,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:05,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:05,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:05,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:05,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:05,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:23:05,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 370 transitions, 4135 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:05,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:05,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:23:05,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:06,512 INFO L124 PetriNetUnfolderBase]: 2668/4254 cut-off events. [2024-06-20 16:23:06,512 INFO L125 PetriNetUnfolderBase]: For 739685/739685 co-relation queries the response was YES. [2024-06-20 16:23:06,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43225 conditions, 4254 events. 2668/4254 cut-off events. For 739685/739685 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 24484 event pairs, 601 based on Foata normal form. 2/4250 useless extension candidates. Maximal degree in co-relation 43090. Up to 3814 conditions per place. [2024-06-20 16:23:06,561 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 345 selfloop transitions, 20 changer transitions 0/391 dead transitions. [2024-06-20 16:23:06,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 391 transitions, 5001 flow [2024-06-20 16:23:06,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:06,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:06,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-20 16:23:06,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-20 16:23:06,562 INFO L175 Difference]: Start difference. First operand has 282 places, 370 transitions, 4135 flow. Second operand 9 states and 161 transitions. [2024-06-20 16:23:06,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 391 transitions, 5001 flow [2024-06-20 16:23:08,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 391 transitions, 4906 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-20 16:23:08,036 INFO L231 Difference]: Finished difference. Result has 285 places, 373 transitions, 4180 flow [2024-06-20 16:23:08,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4040, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4180, PETRI_PLACES=285, PETRI_TRANSITIONS=373} [2024-06-20 16:23:08,037 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 242 predicate places. [2024-06-20 16:23:08,037 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 373 transitions, 4180 flow [2024-06-20 16:23:08,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:08,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:08,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:08,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-20 16:23:08,038 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:23:08,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:08,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1285849762, now seen corresponding path program 3 times [2024-06-20 16:23:08,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:08,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953389089] [2024-06-20 16:23:08,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:08,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:09,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:09,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:09,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953389089] [2024-06-20 16:23:09,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953389089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:09,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:09,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:23:09,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590481352] [2024-06-20 16:23:09,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:09,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:23:09,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:09,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:23:09,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:23:09,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-20 16:23:09,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 373 transitions, 4180 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) [2024-06-20 16:23:09,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:09,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-20 16:23:09,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:10,041 INFO L124 PetriNetUnfolderBase]: 2553/4141 cut-off events. [2024-06-20 16:23:10,041 INFO L125 PetriNetUnfolderBase]: For 759360/759364 co-relation queries the response was YES. [2024-06-20 16:23:10,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43061 conditions, 4141 events. 2553/4141 cut-off events. For 759360/759364 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 24411 event pairs, 549 based on Foata normal form. 2/4125 useless extension candidates. Maximal degree in co-relation 42925. Up to 3539 conditions per place. [2024-06-20 16:23:10,096 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 324 selfloop transitions, 16 changer transitions 0/393 dead transitions. [2024-06-20 16:23:10,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 393 transitions, 5006 flow [2024-06-20 16:23:10,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:23:10,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:23:10,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-20 16:23:10,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-20 16:23:10,097 INFO L175 Difference]: Start difference. First operand has 285 places, 373 transitions, 4180 flow. Second operand 8 states and 150 transitions. [2024-06-20 16:23:10,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 393 transitions, 5006 flow [2024-06-20 16:23:11,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 393 transitions, 4892 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:11,698 INFO L231 Difference]: Finished difference. Result has 287 places, 378 transitions, 4219 flow [2024-06-20 16:23:11,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4066, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4219, PETRI_PLACES=287, PETRI_TRANSITIONS=378} [2024-06-20 16:23:11,699 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 244 predicate places. [2024-06-20 16:23:11,699 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 378 transitions, 4219 flow [2024-06-20 16:23:11,699 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) [2024-06-20 16:23:11,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:11,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:11,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-20 16:23:11,699 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:23:11,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:11,700 INFO L85 PathProgramCache]: Analyzing trace with hash 302754778, now seen corresponding path program 4 times [2024-06-20 16:23:11,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:11,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30867381] [2024-06-20 16:23:11,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:11,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:12,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:12,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:12,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30867381] [2024-06-20 16:23:12,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30867381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:12,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:12,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:23:12,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902927280] [2024-06-20 16:23:12,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:12,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:23:12,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:12,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:23:12,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:23:12,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-20 16:23:12,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 378 transitions, 4219 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) [2024-06-20 16:23:12,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:12,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-20 16:23:12,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:13,824 INFO L124 PetriNetUnfolderBase]: 2548/4135 cut-off events. [2024-06-20 16:23:13,824 INFO L125 PetriNetUnfolderBase]: For 766337/766346 co-relation queries the response was YES. [2024-06-20 16:23:13,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43134 conditions, 4135 events. 2548/4135 cut-off events. For 766337/766346 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 24394 event pairs, 548 based on Foata normal form. 4/4114 useless extension candidates. Maximal degree in co-relation 42996. Up to 3523 conditions per place. [2024-06-20 16:23:13,879 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 319 selfloop transitions, 23 changer transitions 0/395 dead transitions. [2024-06-20 16:23:13,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 395 transitions, 5047 flow [2024-06-20 16:23:13,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:23:13,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:23:13,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-20 16:23:13,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-20 16:23:13,880 INFO L175 Difference]: Start difference. First operand has 287 places, 378 transitions, 4219 flow. Second operand 8 states and 150 transitions. [2024-06-20 16:23:13,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 395 transitions, 5047 flow [2024-06-20 16:23:15,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 395 transitions, 4940 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-20 16:23:15,259 INFO L231 Difference]: Finished difference. Result has 291 places, 383 transitions, 4285 flow [2024-06-20 16:23:15,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4112, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4285, PETRI_PLACES=291, PETRI_TRANSITIONS=383} [2024-06-20 16:23:15,260 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 248 predicate places. [2024-06-20 16:23:15,260 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 383 transitions, 4285 flow [2024-06-20 16:23:15,260 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) [2024-06-20 16:23:15,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:15,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:15,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-20 16:23:15,260 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:23:15,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:15,261 INFO L85 PathProgramCache]: Analyzing trace with hash 539422418, now seen corresponding path program 1 times [2024-06-20 16:23:15,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:15,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285398504] [2024-06-20 16:23:15,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:15,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:16,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:16,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:16,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285398504] [2024-06-20 16:23:16,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285398504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:16,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:16,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:16,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892031] [2024-06-20 16:23:16,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:16,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:16,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:16,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:16,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:16,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:23:16,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 383 transitions, 4285 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:16,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:16,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:23:16,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:17,472 INFO L124 PetriNetUnfolderBase]: 2747/4343 cut-off events. [2024-06-20 16:23:17,472 INFO L125 PetriNetUnfolderBase]: For 772615/772615 co-relation queries the response was YES. [2024-06-20 16:23:17,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44486 conditions, 4343 events. 2747/4343 cut-off events. For 772615/772615 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 24717 event pairs, 619 based on Foata normal form. 2/4343 useless extension candidates. Maximal degree in co-relation 44346. Up to 4093 conditions per place. [2024-06-20 16:23:17,528 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 372 selfloop transitions, 22 changer transitions 0/399 dead transitions. [2024-06-20 16:23:17,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 399 transitions, 5219 flow [2024-06-20 16:23:17,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:17,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:17,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-20 16:23:17,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-20 16:23:17,529 INFO L175 Difference]: Start difference. First operand has 291 places, 383 transitions, 4285 flow. Second operand 10 states and 161 transitions. [2024-06-20 16:23:17,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 399 transitions, 5219 flow [2024-06-20 16:23:19,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 399 transitions, 5092 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-20 16:23:19,356 INFO L231 Difference]: Finished difference. Result has 296 places, 385 transitions, 4321 flow [2024-06-20 16:23:19,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4158, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4321, PETRI_PLACES=296, PETRI_TRANSITIONS=385} [2024-06-20 16:23:19,356 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 253 predicate places. [2024-06-20 16:23:19,357 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 385 transitions, 4321 flow [2024-06-20 16:23:19,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:19,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:19,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:19,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-20 16:23:19,357 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:23:19,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:19,358 INFO L85 PathProgramCache]: Analyzing trace with hash -2096939156, now seen corresponding path program 1 times [2024-06-20 16:23:19,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:19,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326240096] [2024-06-20 16:23:19,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:19,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:20,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:20,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326240096] [2024-06-20 16:23:20,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326240096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:20,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:20,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:20,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840382446] [2024-06-20 16:23:20,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:20,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:20,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:20,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:20,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:20,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:23:20,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 385 transitions, 4321 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:20,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:20,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:23:20,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:21,282 INFO L124 PetriNetUnfolderBase]: 2783/4402 cut-off events. [2024-06-20 16:23:21,282 INFO L125 PetriNetUnfolderBase]: For 818779/818782 co-relation queries the response was YES. [2024-06-20 16:23:21,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45116 conditions, 4402 events. 2783/4402 cut-off events. For 818779/818782 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 25117 event pairs, 494 based on Foata normal form. 12/4411 useless extension candidates. Maximal degree in co-relation 44975. Up to 3950 conditions per place. [2024-06-20 16:23:21,341 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 389 selfloop transitions, 28 changer transitions 0/422 dead transitions. [2024-06-20 16:23:21,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 422 transitions, 5439 flow [2024-06-20 16:23:21,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:21,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:21,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-20 16:23:21,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576719576719577 [2024-06-20 16:23:21,342 INFO L175 Difference]: Start difference. First operand has 296 places, 385 transitions, 4321 flow. Second operand 9 states and 173 transitions. [2024-06-20 16:23:21,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 422 transitions, 5439 flow [2024-06-20 16:23:23,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 422 transitions, 5292 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-06-20 16:23:23,077 INFO L231 Difference]: Finished difference. Result has 297 places, 387 transitions, 4327 flow [2024-06-20 16:23:23,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4174, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4327, PETRI_PLACES=297, PETRI_TRANSITIONS=387} [2024-06-20 16:23:23,078 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 254 predicate places. [2024-06-20 16:23:23,078 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 387 transitions, 4327 flow [2024-06-20 16:23:23,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:23,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:23,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:23,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-20 16:23:23,078 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:23:23,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:23,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1830915446, now seen corresponding path program 2 times [2024-06-20 16:23:23,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:23,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674223669] [2024-06-20 16:23:23,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:23,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:23,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:23,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:23,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674223669] [2024-06-20 16:23:23,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674223669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:23,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:23,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:23,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941173424] [2024-06-20 16:23:23,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:23,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:23,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:23,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:23,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:24,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:23:24,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 387 transitions, 4327 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:24,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:24,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:23:24,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:25,164 INFO L124 PetriNetUnfolderBase]: 2827/4476 cut-off events. [2024-06-20 16:23:25,164 INFO L125 PetriNetUnfolderBase]: For 845974/845977 co-relation queries the response was YES. [2024-06-20 16:23:25,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45952 conditions, 4476 events. 2827/4476 cut-off events. For 845974/845977 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 25716 event pairs, 639 based on Foata normal form. 14/4487 useless extension candidates. Maximal degree in co-relation 45810. Up to 4090 conditions per place. [2024-06-20 16:23:25,220 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 383 selfloop transitions, 31 changer transitions 0/419 dead transitions. [2024-06-20 16:23:25,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 419 transitions, 5419 flow [2024-06-20 16:23:25,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:25,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:25,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-20 16:23:25,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-20 16:23:25,221 INFO L175 Difference]: Start difference. First operand has 297 places, 387 transitions, 4327 flow. Second operand 9 states and 171 transitions. [2024-06-20 16:23:25,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 419 transitions, 5419 flow [2024-06-20 16:23:27,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 419 transitions, 5300 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:27,461 INFO L231 Difference]: Finished difference. Result has 299 places, 389 transitions, 4372 flow [2024-06-20 16:23:27,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4208, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4372, PETRI_PLACES=299, PETRI_TRANSITIONS=389} [2024-06-20 16:23:27,461 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 256 predicate places. [2024-06-20 16:23:27,462 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 389 transitions, 4372 flow [2024-06-20 16:23:27,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:27,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:27,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:27,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-20 16:23:27,462 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:23:27,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:27,462 INFO L85 PathProgramCache]: Analyzing trace with hash -69697210, now seen corresponding path program 3 times [2024-06-20 16:23:27,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:27,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934265589] [2024-06-20 16:23:27,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:27,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:28,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:28,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:28,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934265589] [2024-06-20 16:23:28,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934265589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:28,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:28,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:28,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651198294] [2024-06-20 16:23:28,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:28,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:28,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:28,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:28,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:28,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:23:28,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 389 transitions, 4372 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:28,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:28,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:23:28,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:29,458 INFO L124 PetriNetUnfolderBase]: 2871/4542 cut-off events. [2024-06-20 16:23:29,458 INFO L125 PetriNetUnfolderBase]: For 862782/862785 co-relation queries the response was YES. [2024-06-20 16:23:29,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46728 conditions, 4542 events. 2871/4542 cut-off events. For 862782/862785 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 26115 event pairs, 637 based on Foata normal form. 14/4553 useless extension candidates. Maximal degree in co-relation 46585. Up to 4046 conditions per place. [2024-06-20 16:23:29,518 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 386 selfloop transitions, 34 changer transitions 0/425 dead transitions. [2024-06-20 16:23:29,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 425 transitions, 5544 flow [2024-06-20 16:23:29,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:29,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:29,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-20 16:23:29,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-20 16:23:29,519 INFO L175 Difference]: Start difference. First operand has 299 places, 389 transitions, 4372 flow. Second operand 9 states and 175 transitions. [2024-06-20 16:23:29,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 425 transitions, 5544 flow [2024-06-20 16:23:31,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 425 transitions, 5416 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:31,797 INFO L231 Difference]: Finished difference. Result has 301 places, 391 transitions, 4417 flow [2024-06-20 16:23:31,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4244, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4417, PETRI_PLACES=301, PETRI_TRANSITIONS=391} [2024-06-20 16:23:31,798 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 258 predicate places. [2024-06-20 16:23:31,798 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 391 transitions, 4417 flow [2024-06-20 16:23:31,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:31,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:31,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:31,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-20 16:23:31,799 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:23:31,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:31,799 INFO L85 PathProgramCache]: Analyzing trace with hash -170511896, now seen corresponding path program 1 times [2024-06-20 16:23:31,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:31,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009897935] [2024-06-20 16:23:31,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:31,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:32,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:32,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009897935] [2024-06-20 16:23:32,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009897935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:32,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:32,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:32,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418070222] [2024-06-20 16:23:32,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:32,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:32,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:32,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:32,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:32,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:23:32,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 391 transitions, 4417 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:32,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:32,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:23:32,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:33,850 INFO L124 PetriNetUnfolderBase]: 2886/4567 cut-off events. [2024-06-20 16:23:33,850 INFO L125 PetriNetUnfolderBase]: For 840383/840386 co-relation queries the response was YES. [2024-06-20 16:23:33,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47120 conditions, 4567 events. 2886/4567 cut-off events. For 840383/840386 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 26280 event pairs, 662 based on Foata normal form. 5/4569 useless extension candidates. Maximal degree in co-relation 46976. Up to 4205 conditions per place. [2024-06-20 16:23:33,912 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 381 selfloop transitions, 37 changer transitions 0/423 dead transitions. [2024-06-20 16:23:33,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 423 transitions, 5527 flow [2024-06-20 16:23:33,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:33,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:33,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-20 16:23:33,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-20 16:23:33,915 INFO L175 Difference]: Start difference. First operand has 301 places, 391 transitions, 4417 flow. Second operand 10 states and 185 transitions. [2024-06-20 16:23:33,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 423 transitions, 5527 flow [2024-06-20 16:23:36,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 423 transitions, 5388 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:36,326 INFO L231 Difference]: Finished difference. Result has 304 places, 395 transitions, 4517 flow [2024-06-20 16:23:36,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4278, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4517, PETRI_PLACES=304, PETRI_TRANSITIONS=395} [2024-06-20 16:23:36,326 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 261 predicate places. [2024-06-20 16:23:36,327 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 395 transitions, 4517 flow [2024-06-20 16:23:36,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:36,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:36,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:36,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-20 16:23:36,327 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:23:36,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:36,327 INFO L85 PathProgramCache]: Analyzing trace with hash 947797924, now seen corresponding path program 1 times [2024-06-20 16:23:36,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:36,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249098080] [2024-06-20 16:23:36,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:36,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:37,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:37,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:37,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249098080] [2024-06-20 16:23:37,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249098080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:37,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:37,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:23:37,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244303141] [2024-06-20 16:23:37,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:37,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:23:37,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:37,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:23:37,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:23:37,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:23:37,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 395 transitions, 4517 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-20 16:23:37,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:37,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:23:37,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:38,449 INFO L124 PetriNetUnfolderBase]: 2767/4453 cut-off events. [2024-06-20 16:23:38,449 INFO L125 PetriNetUnfolderBase]: For 850049/850049 co-relation queries the response was YES. [2024-06-20 16:23:38,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46798 conditions, 4453 events. 2767/4453 cut-off events. For 850049/850049 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 26294 event pairs, 628 based on Foata normal form. 1/4437 useless extension candidates. Maximal degree in co-relation 46653. Up to 3829 conditions per place. [2024-06-20 16:23:38,511 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 348 selfloop transitions, 40 changer transitions 0/423 dead transitions. [2024-06-20 16:23:38,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 423 transitions, 5488 flow [2024-06-20 16:23:38,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:23:38,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:23:38,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-20 16:23:38,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2024-06-20 16:23:38,512 INFO L175 Difference]: Start difference. First operand has 304 places, 395 transitions, 4517 flow. Second operand 8 states and 158 transitions. [2024-06-20 16:23:38,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 423 transitions, 5488 flow [2024-06-20 16:23:41,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 423 transitions, 5277 flow, removed 71 selfloop flow, removed 8 redundant places. [2024-06-20 16:23:41,141 INFO L231 Difference]: Finished difference. Result has 304 places, 401 transitions, 4533 flow [2024-06-20 16:23:41,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4306, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4533, PETRI_PLACES=304, PETRI_TRANSITIONS=401} [2024-06-20 16:23:41,142 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 261 predicate places. [2024-06-20 16:23:41,142 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 401 transitions, 4533 flow [2024-06-20 16:23:41,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-20 16:23:41,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:41,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:41,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-20 16:23:41,143 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:23:41,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:41,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1565624974, now seen corresponding path program 2 times [2024-06-20 16:23:41,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:41,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984141244] [2024-06-20 16:23:41,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:41,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:42,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:42,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:42,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984141244] [2024-06-20 16:23:42,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984141244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:42,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:42,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:23:42,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811556053] [2024-06-20 16:23:42,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:42,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:23:42,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:42,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:23:42,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:23:42,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:23:42,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 401 transitions, 4533 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-20 16:23:42,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:42,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:23:42,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:43,241 INFO L124 PetriNetUnfolderBase]: 2772/4462 cut-off events. [2024-06-20 16:23:43,241 INFO L125 PetriNetUnfolderBase]: For 869039/869039 co-relation queries the response was YES. [2024-06-20 16:23:43,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47272 conditions, 4462 events. 2772/4462 cut-off events. For 869039/869039 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 26401 event pairs, 628 based on Foata normal form. 1/4446 useless extension candidates. Maximal degree in co-relation 47126. Up to 3836 conditions per place. [2024-06-20 16:23:43,302 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 351 selfloop transitions, 43 changer transitions 0/429 dead transitions. [2024-06-20 16:23:43,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 429 transitions, 5505 flow [2024-06-20 16:23:43,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:23:43,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:23:43,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-20 16:23:43,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-20 16:23:43,303 INFO L175 Difference]: Start difference. First operand has 304 places, 401 transitions, 4533 flow. Second operand 8 states and 162 transitions. [2024-06-20 16:23:43,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 429 transitions, 5505 flow [2024-06-20 16:23:46,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 429 transitions, 5333 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-20 16:23:46,139 INFO L231 Difference]: Finished difference. Result has 307 places, 404 transitions, 4571 flow [2024-06-20 16:23:46,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4361, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4571, PETRI_PLACES=307, PETRI_TRANSITIONS=404} [2024-06-20 16:23:46,140 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 264 predicate places. [2024-06-20 16:23:46,140 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 404 transitions, 4571 flow [2024-06-20 16:23:46,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-20 16:23:46,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:46,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:46,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-20 16:23:46,141 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:23:46,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:46,141 INFO L85 PathProgramCache]: Analyzing trace with hash 844395090, now seen corresponding path program 1 times [2024-06-20 16:23:46,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:46,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454388176] [2024-06-20 16:23:46,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:46,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:47,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:47,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:47,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454388176] [2024-06-20 16:23:47,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454388176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:47,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:47,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:47,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818651211] [2024-06-20 16:23:47,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:47,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:47,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:47,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:47,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:47,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:23:47,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 404 transitions, 4571 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:47,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:47,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:23:47,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:48,464 INFO L124 PetriNetUnfolderBase]: 2917/4609 cut-off events. [2024-06-20 16:23:48,464 INFO L125 PetriNetUnfolderBase]: For 890581/890581 co-relation queries the response was YES. [2024-06-20 16:23:48,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48838 conditions, 4609 events. 2917/4609 cut-off events. For 890581/890581 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 26527 event pairs, 674 based on Foata normal form. 2/4606 useless extension candidates. Maximal degree in co-relation 48691. Up to 4202 conditions per place. [2024-06-20 16:23:48,527 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 381 selfloop transitions, 45 changer transitions 0/431 dead transitions. [2024-06-20 16:23:48,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 431 transitions, 5629 flow [2024-06-20 16:23:48,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:48,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:48,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-20 16:23:48,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-20 16:23:48,528 INFO L175 Difference]: Start difference. First operand has 307 places, 404 transitions, 4571 flow. Second operand 9 states and 168 transitions. [2024-06-20 16:23:48,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 431 transitions, 5629 flow [2024-06-20 16:23:51,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 431 transitions, 5430 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-20 16:23:51,209 INFO L231 Difference]: Finished difference. Result has 310 places, 408 transitions, 4621 flow [2024-06-20 16:23:51,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4372, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4621, PETRI_PLACES=310, PETRI_TRANSITIONS=408} [2024-06-20 16:23:51,209 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 267 predicate places. [2024-06-20 16:23:51,209 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 408 transitions, 4621 flow [2024-06-20 16:23:51,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:51,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:51,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:51,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-20 16:23:51,210 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:23:51,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:51,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1571285884, now seen corresponding path program 3 times [2024-06-20 16:23:51,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:51,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662582501] [2024-06-20 16:23:51,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:51,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:52,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:52,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:52,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662582501] [2024-06-20 16:23:52,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662582501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:52,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:52,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:23:52,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103153173] [2024-06-20 16:23:52,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:52,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:23:52,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:52,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:23:52,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:23:52,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:23:52,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 408 transitions, 4621 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-20 16:23:52,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:52,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:23:52,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:53,298 INFO L124 PetriNetUnfolderBase]: 2787/4483 cut-off events. [2024-06-20 16:23:53,299 INFO L125 PetriNetUnfolderBase]: For 909394/909394 co-relation queries the response was YES. [2024-06-20 16:23:53,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48619 conditions, 4483 events. 2787/4483 cut-off events. For 909394/909394 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 26482 event pairs, 626 based on Foata normal form. 1/4467 useless extension candidates. Maximal degree in co-relation 48471. Up to 3836 conditions per place. [2024-06-20 16:23:53,361 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 343 selfloop transitions, 51 changer transitions 0/430 dead transitions. [2024-06-20 16:23:53,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 430 transitions, 5583 flow [2024-06-20 16:23:53,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:23:53,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:23:53,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-20 16:23:53,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-20 16:23:53,362 INFO L175 Difference]: Start difference. First operand has 310 places, 408 transitions, 4621 flow. Second operand 8 states and 156 transitions. [2024-06-20 16:23:53,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 430 transitions, 5583 flow [2024-06-20 16:23:55,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 430 transitions, 5362 flow, removed 68 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:55,646 INFO L231 Difference]: Finished difference. Result has 311 places, 411 transitions, 4637 flow [2024-06-20 16:23:55,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4400, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4637, PETRI_PLACES=311, PETRI_TRANSITIONS=411} [2024-06-20 16:23:55,646 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 268 predicate places. [2024-06-20 16:23:55,646 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 411 transitions, 4637 flow [2024-06-20 16:23:55,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-20 16:23:55,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:55,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:55,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-20 16:23:55,647 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:23:55,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:55,648 INFO L85 PathProgramCache]: Analyzing trace with hash -9855471, now seen corresponding path program 1 times [2024-06-20 16:23:55,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:55,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922966971] [2024-06-20 16:23:55,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:55,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:56,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:56,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:56,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922966971] [2024-06-20 16:23:56,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922966971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:56,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:56,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:56,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299917025] [2024-06-20 16:23:56,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:56,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:56,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:56,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:56,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:56,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:23:56,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 411 transitions, 4637 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:56,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:56,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:23:56,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:57,695 INFO L124 PetriNetUnfolderBase]: 2942/4651 cut-off events. [2024-06-20 16:23:57,695 INFO L125 PetriNetUnfolderBase]: For 943629/943632 co-relation queries the response was YES. [2024-06-20 16:23:57,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50135 conditions, 4651 events. 2942/4651 cut-off events. For 943629/943632 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 26862 event pairs, 656 based on Foata normal form. 6/4654 useless extension candidates. Maximal degree in co-relation 49986. Up to 4282 conditions per place. [2024-06-20 16:23:57,755 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 401 selfloop transitions, 32 changer transitions 0/438 dead transitions. [2024-06-20 16:23:57,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 438 transitions, 5702 flow [2024-06-20 16:23:57,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:57,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:57,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-20 16:23:57,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43915343915343913 [2024-06-20 16:23:57,757 INFO L175 Difference]: Start difference. First operand has 311 places, 411 transitions, 4637 flow. Second operand 9 states and 166 transitions. [2024-06-20 16:23:57,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 438 transitions, 5702 flow [2024-06-20 16:24:00,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 438 transitions, 5489 flow, removed 58 selfloop flow, removed 6 redundant places. [2024-06-20 16:24:00,337 INFO L231 Difference]: Finished difference. Result has 314 places, 415 transitions, 4606 flow [2024-06-20 16:24:00,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4424, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4606, PETRI_PLACES=314, PETRI_TRANSITIONS=415} [2024-06-20 16:24:00,337 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 271 predicate places. [2024-06-20 16:24:00,337 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 415 transitions, 4606 flow [2024-06-20 16:24:00,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:00,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:00,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:00,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-20 16:24:00,338 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:24:00,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:00,338 INFO L85 PathProgramCache]: Analyzing trace with hash 237900127, now seen corresponding path program 2 times [2024-06-20 16:24:00,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:00,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091563981] [2024-06-20 16:24:00,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:00,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:01,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:01,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:01,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091563981] [2024-06-20 16:24:01,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091563981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:01,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:01,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:24:01,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600018449] [2024-06-20 16:24:01,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:01,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:24:01,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:01,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:24:01,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:24:01,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:24:01,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 415 transitions, 4606 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:01,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:01,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:24:01,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:02,493 INFO L124 PetriNetUnfolderBase]: 2994/4735 cut-off events. [2024-06-20 16:24:02,493 INFO L125 PetriNetUnfolderBase]: For 983654/983657 co-relation queries the response was YES. [2024-06-20 16:24:02,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51407 conditions, 4735 events. 2994/4735 cut-off events. For 983654/983657 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 27433 event pairs, 631 based on Foata normal form. 6/4738 useless extension candidates. Maximal degree in co-relation 51257. Up to 4085 conditions per place. [2024-06-20 16:24:02,551 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 358 selfloop transitions, 83 changer transitions 0/446 dead transitions. [2024-06-20 16:24:02,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 446 transitions, 6232 flow [2024-06-20 16:24:02,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:24:02,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:24:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-20 16:24:02,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-20 16:24:02,553 INFO L175 Difference]: Start difference. First operand has 314 places, 415 transitions, 4606 flow. Second operand 9 states and 170 transitions. [2024-06-20 16:24:02,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 446 transitions, 6232 flow [2024-06-20 16:24:05,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 446 transitions, 6117 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-20 16:24:05,232 INFO L231 Difference]: Finished difference. Result has 316 places, 423 transitions, 4888 flow [2024-06-20 16:24:05,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4491, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4888, PETRI_PLACES=316, PETRI_TRANSITIONS=423} [2024-06-20 16:24:05,233 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 273 predicate places. [2024-06-20 16:24:05,233 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 423 transitions, 4888 flow [2024-06-20 16:24:05,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:05,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:05,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:05,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-20 16:24:05,233 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:24:05,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:05,234 INFO L85 PathProgramCache]: Analyzing trace with hash 197064879, now seen corresponding path program 3 times [2024-06-20 16:24:05,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:05,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202773754] [2024-06-20 16:24:05,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:05,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:06,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:06,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202773754] [2024-06-20 16:24:06,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202773754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:06,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:06,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:24:06,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902574948] [2024-06-20 16:24:06,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:06,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:24:06,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:06,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:24:06,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:24:06,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:24:06,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 423 transitions, 4888 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:06,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:06,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:24:06,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:07,209 INFO L124 PetriNetUnfolderBase]: 2982/4719 cut-off events. [2024-06-20 16:24:07,209 INFO L125 PetriNetUnfolderBase]: For 979020/979023 co-relation queries the response was YES. [2024-06-20 16:24:07,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51116 conditions, 4719 events. 2982/4719 cut-off events. For 979020/979023 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 27409 event pairs, 629 based on Foata normal form. 6/4722 useless extension candidates. Maximal degree in co-relation 50965. Up to 4077 conditions per place. [2024-06-20 16:24:07,280 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 356 selfloop transitions, 84 changer transitions 0/445 dead transitions. [2024-06-20 16:24:07,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 445 transitions, 6082 flow [2024-06-20 16:24:07,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:24:07,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:24:07,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-20 16:24:07,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-20 16:24:07,282 INFO L175 Difference]: Start difference. First operand has 316 places, 423 transitions, 4888 flow. Second operand 9 states and 168 transitions. [2024-06-20 16:24:07,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 445 transitions, 6082 flow [2024-06-20 16:24:10,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 445 transitions, 5858 flow, removed 64 selfloop flow, removed 5 redundant places. [2024-06-20 16:24:10,204 INFO L231 Difference]: Finished difference. Result has 320 places, 423 transitions, 4843 flow [2024-06-20 16:24:10,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4664, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4843, PETRI_PLACES=320, PETRI_TRANSITIONS=423} [2024-06-20 16:24:10,205 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 277 predicate places. [2024-06-20 16:24:10,205 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 423 transitions, 4843 flow [2024-06-20 16:24:10,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:10,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:10,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:10,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-20 16:24:10,205 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:24:10,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:10,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1523846349, now seen corresponding path program 4 times [2024-06-20 16:24:10,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:10,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824510867] [2024-06-20 16:24:10,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:10,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:11,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:11,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:11,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824510867] [2024-06-20 16:24:11,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824510867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:11,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:11,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:24:11,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689458510] [2024-06-20 16:24:11,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:11,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:24:11,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:11,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:24:11,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:24:11,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:24:11,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 423 transitions, 4843 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:11,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:11,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:24:11,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:12,280 INFO L124 PetriNetUnfolderBase]: 2986/4731 cut-off events. [2024-06-20 16:24:12,281 INFO L125 PetriNetUnfolderBase]: For 983246/983249 co-relation queries the response was YES. [2024-06-20 16:24:12,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50990 conditions, 4731 events. 2986/4731 cut-off events. For 983246/983249 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 27483 event pairs, 661 based on Foata normal form. 6/4734 useless extension candidates. Maximal degree in co-relation 50838. Up to 4078 conditions per place. [2024-06-20 16:24:12,347 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 357 selfloop transitions, 86 changer transitions 0/448 dead transitions. [2024-06-20 16:24:12,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 448 transitions, 6141 flow [2024-06-20 16:24:12,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:24:12,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:24:12,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-20 16:24:12,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-20 16:24:12,348 INFO L175 Difference]: Start difference. First operand has 320 places, 423 transitions, 4843 flow. Second operand 9 states and 170 transitions. [2024-06-20 16:24:12,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 448 transitions, 6141 flow [2024-06-20 16:24:15,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 448 transitions, 5999 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-20 16:24:15,572 INFO L231 Difference]: Finished difference. Result has 322 places, 426 transitions, 4978 flow [2024-06-20 16:24:15,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4703, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4978, PETRI_PLACES=322, PETRI_TRANSITIONS=426} [2024-06-20 16:24:15,573 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 279 predicate places. [2024-06-20 16:24:15,573 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 426 transitions, 4978 flow [2024-06-20 16:24:15,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:15,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:15,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:15,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-20 16:24:15,573 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:24:15,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:15,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1527342808, now seen corresponding path program 4 times [2024-06-20 16:24:15,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:15,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131319812] [2024-06-20 16:24:15,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:15,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:16,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:16,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:16,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131319812] [2024-06-20 16:24:16,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131319812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:16,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:16,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:24:16,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930166363] [2024-06-20 16:24:16,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:16,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:24:16,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:16,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:24:16,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:24:16,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:24:16,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 426 transitions, 4978 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:16,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:16,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:24:16,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:17,720 INFO L124 PetriNetUnfolderBase]: 3030/4817 cut-off events. [2024-06-20 16:24:17,720 INFO L125 PetriNetUnfolderBase]: For 1049703/1049706 co-relation queries the response was YES. [2024-06-20 16:24:17,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51955 conditions, 4817 events. 3030/4817 cut-off events. For 1049703/1049706 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 28320 event pairs, 651 based on Foata normal form. 14/4828 useless extension candidates. Maximal degree in co-relation 51802. Up to 4241 conditions per place. [2024-06-20 16:24:17,787 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 386 selfloop transitions, 62 changer transitions 0/453 dead transitions. [2024-06-20 16:24:17,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 453 transitions, 6164 flow [2024-06-20 16:24:17,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:24:17,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:24:17,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-20 16:24:17,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-20 16:24:17,789 INFO L175 Difference]: Start difference. First operand has 322 places, 426 transitions, 4978 flow. Second operand 9 states and 169 transitions. [2024-06-20 16:24:17,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 453 transitions, 6164 flow [2024-06-20 16:24:20,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 453 transitions, 5987 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-20 16:24:20,861 INFO L231 Difference]: Finished difference. Result has 325 places, 428 transitions, 5039 flow [2024-06-20 16:24:20,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4801, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5039, PETRI_PLACES=325, PETRI_TRANSITIONS=428} [2024-06-20 16:24:20,861 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 282 predicate places. [2024-06-20 16:24:20,861 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 428 transitions, 5039 flow [2024-06-20 16:24:20,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:20,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:20,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:20,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-20 16:24:20,861 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:24:20,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:20,862 INFO L85 PathProgramCache]: Analyzing trace with hash 185623430, now seen corresponding path program 5 times [2024-06-20 16:24:20,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:20,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552754332] [2024-06-20 16:24:20,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:20,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:21,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:21,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:21,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552754332] [2024-06-20 16:24:21,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552754332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:21,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:21,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:24:21,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212799498] [2024-06-20 16:24:21,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:21,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:24:21,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:21,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:24:21,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:24:21,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:24:21,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 428 transitions, 5039 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:21,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:21,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:24:21,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:22,994 INFO L124 PetriNetUnfolderBase]: 3146/4991 cut-off events. [2024-06-20 16:24:22,995 INFO L125 PetriNetUnfolderBase]: For 1143414/1143417 co-relation queries the response was YES. [2024-06-20 16:24:23,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55323 conditions, 4991 events. 3146/4991 cut-off events. For 1143414/1143417 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 29368 event pairs, 661 based on Foata normal form. 14/5002 useless extension candidates. Maximal degree in co-relation 55169. Up to 4231 conditions per place. [2024-06-20 16:24:23,065 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 390 selfloop transitions, 67 changer transitions 0/462 dead transitions. [2024-06-20 16:24:23,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 462 transitions, 6657 flow [2024-06-20 16:24:23,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:24:23,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:24:23,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-20 16:24:23,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576719576719577 [2024-06-20 16:24:23,066 INFO L175 Difference]: Start difference. First operand has 325 places, 428 transitions, 5039 flow. Second operand 9 states and 173 transitions. [2024-06-20 16:24:23,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 462 transitions, 6657 flow [2024-06-20 16:24:26,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 462 transitions, 6459 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-20 16:24:26,185 INFO L231 Difference]: Finished difference. Result has 327 places, 432 transitions, 5200 flow [2024-06-20 16:24:26,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4841, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5200, PETRI_PLACES=327, PETRI_TRANSITIONS=432} [2024-06-20 16:24:26,185 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 284 predicate places. [2024-06-20 16:24:26,185 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 432 transitions, 5200 flow [2024-06-20 16:24:26,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:26,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:26,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:26,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-20 16:24:26,186 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:24:26,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:26,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1516618048, now seen corresponding path program 6 times [2024-06-20 16:24:26,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:26,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116508445] [2024-06-20 16:24:26,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:26,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:27,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:27,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:27,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116508445] [2024-06-20 16:24:27,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116508445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:27,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:27,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:24:27,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858471972] [2024-06-20 16:24:27,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:27,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:24:27,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:27,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:24:27,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:24:27,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:24:27,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 432 transitions, 5200 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:27,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:27,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:24:27,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:28,416 INFO L124 PetriNetUnfolderBase]: 3118/4953 cut-off events. [2024-06-20 16:24:28,417 INFO L125 PetriNetUnfolderBase]: For 1096208/1096211 co-relation queries the response was YES. [2024-06-20 16:24:28,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53733 conditions, 4953 events. 3118/4953 cut-off events. For 1096208/1096211 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 29162 event pairs, 669 based on Foata normal form. 14/4964 useless extension candidates. Maximal degree in co-relation 53578. Up to 4377 conditions per place. [2024-06-20 16:24:28,490 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 391 selfloop transitions, 61 changer transitions 0/457 dead transitions. [2024-06-20 16:24:28,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 457 transitions, 6290 flow [2024-06-20 16:24:28,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:24:28,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:24:28,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-20 16:24:28,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-20 16:24:28,491 INFO L175 Difference]: Start difference. First operand has 327 places, 432 transitions, 5200 flow. Second operand 9 states and 168 transitions. [2024-06-20 16:24:28,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 457 transitions, 6290 flow [2024-06-20 16:24:31,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 457 transitions, 6054 flow, removed 79 selfloop flow, removed 5 redundant places. [2024-06-20 16:24:31,892 INFO L231 Difference]: Finished difference. Result has 331 places, 432 transitions, 5092 flow [2024-06-20 16:24:31,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4964, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5092, PETRI_PLACES=331, PETRI_TRANSITIONS=432} [2024-06-20 16:24:31,893 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 288 predicate places. [2024-06-20 16:24:31,893 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 432 transitions, 5092 flow [2024-06-20 16:24:31,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:31,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:31,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:31,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-20 16:24:31,893 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:24:31,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:31,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1516217869, now seen corresponding path program 1 times [2024-06-20 16:24:31,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:31,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005123935] [2024-06-20 16:24:31,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:31,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:33,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:33,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:33,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005123935] [2024-06-20 16:24:33,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005123935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:33,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:33,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:24:33,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924581063] [2024-06-20 16:24:33,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:33,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:24:33,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:33,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:24:33,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:33,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:24:33,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 432 transitions, 5092 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:33,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:33,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:24:33,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:34,360 INFO L124 PetriNetUnfolderBase]: 3123/4921 cut-off events. [2024-06-20 16:24:34,361 INFO L125 PetriNetUnfolderBase]: For 1041859/1041859 co-relation queries the response was YES. [2024-06-20 16:24:34,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53671 conditions, 4921 events. 3123/4921 cut-off events. For 1041859/1041859 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 28598 event pairs, 712 based on Foata normal form. 1/4920 useless extension candidates. Maximal degree in co-relation 53514. Up to 4649 conditions per place. [2024-06-20 16:24:34,436 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 426 selfloop transitions, 23 changer transitions 0/454 dead transitions. [2024-06-20 16:24:34,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 454 transitions, 6180 flow [2024-06-20 16:24:34,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:34,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:34,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-20 16:24:34,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3976190476190476 [2024-06-20 16:24:34,437 INFO L175 Difference]: Start difference. First operand has 331 places, 432 transitions, 5092 flow. Second operand 10 states and 167 transitions. [2024-06-20 16:24:34,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 454 transitions, 6180 flow [2024-06-20 16:24:38,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 454 transitions, 6044 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:38,108 INFO L231 Difference]: Finished difference. Result has 333 places, 435 transitions, 5150 flow [2024-06-20 16:24:38,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4956, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5150, PETRI_PLACES=333, PETRI_TRANSITIONS=435} [2024-06-20 16:24:38,108 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 290 predicate places. [2024-06-20 16:24:38,109 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 435 transitions, 5150 flow [2024-06-20 16:24:38,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:38,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:38,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:38,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-20 16:24:38,109 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:24:38,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:38,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1527330904, now seen corresponding path program 2 times [2024-06-20 16:24:38,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:38,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948947] [2024-06-20 16:24:38,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:38,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:39,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:39,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:39,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948947] [2024-06-20 16:24:39,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:39,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:39,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:24:39,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972630010] [2024-06-20 16:24:39,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:39,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:24:39,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:39,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:24:39,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:39,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:24:39,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 435 transitions, 5150 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:39,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:39,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:24:39,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:40,397 INFO L124 PetriNetUnfolderBase]: 3194/5048 cut-off events. [2024-06-20 16:24:40,397 INFO L125 PetriNetUnfolderBase]: For 1122211/1122214 co-relation queries the response was YES. [2024-06-20 16:24:40,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55930 conditions, 5048 events. 3194/5048 cut-off events. For 1122211/1122214 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 29625 event pairs, 698 based on Foata normal form. 5/5050 useless extension candidates. Maximal degree in co-relation 55772. Up to 4270 conditions per place. [2024-06-20 16:24:40,475 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 370 selfloop transitions, 97 changer transitions 0/472 dead transitions. [2024-06-20 16:24:40,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 472 transitions, 7158 flow [2024-06-20 16:24:40,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:40,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:40,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-20 16:24:40,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-20 16:24:40,476 INFO L175 Difference]: Start difference. First operand has 333 places, 435 transitions, 5150 flow. Second operand 10 states and 189 transitions. [2024-06-20 16:24:40,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 472 transitions, 7158 flow [2024-06-20 16:24:44,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 472 transitions, 6990 flow, removed 65 selfloop flow, removed 7 redundant places. [2024-06-20 16:24:44,611 INFO L231 Difference]: Finished difference. Result has 337 places, 447 transitions, 5764 flow [2024-06-20 16:24:44,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4982, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5764, PETRI_PLACES=337, PETRI_TRANSITIONS=447} [2024-06-20 16:24:44,611 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 294 predicate places. [2024-06-20 16:24:44,611 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 447 transitions, 5764 flow [2024-06-20 16:24:44,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:44,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:44,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:44,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-20 16:24:44,612 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:24:44,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:44,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1516231354, now seen corresponding path program 3 times [2024-06-20 16:24:44,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:44,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555335356] [2024-06-20 16:24:44,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:44,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:45,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:45,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:45,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555335356] [2024-06-20 16:24:45,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555335356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:45,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:45,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:24:45,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156911645] [2024-06-20 16:24:45,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:45,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:24:45,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:45,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:24:45,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:45,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:24:45,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 447 transitions, 5764 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:45,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:45,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:24:45,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:46,901 INFO L124 PetriNetUnfolderBase]: 3237/5108 cut-off events. [2024-06-20 16:24:46,901 INFO L125 PetriNetUnfolderBase]: For 1172648/1172651 co-relation queries the response was YES. [2024-06-20 16:24:46,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58324 conditions, 5108 events. 3237/5108 cut-off events. For 1172648/1172651 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 29967 event pairs, 659 based on Foata normal form. 5/5110 useless extension candidates. Maximal degree in co-relation 58164. Up to 4310 conditions per place. [2024-06-20 16:24:46,974 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 374 selfloop transitions, 101 changer transitions 0/480 dead transitions. [2024-06-20 16:24:46,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 480 transitions, 7662 flow [2024-06-20 16:24:46,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:46,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:46,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-20 16:24:46,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452380952380952 [2024-06-20 16:24:46,975 INFO L175 Difference]: Start difference. First operand has 337 places, 447 transitions, 5764 flow. Second operand 10 states and 187 transitions. [2024-06-20 16:24:46,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 480 transitions, 7662 flow [2024-06-20 16:24:50,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 480 transitions, 7372 flow, removed 130 selfloop flow, removed 5 redundant places. [2024-06-20 16:24:50,609 INFO L231 Difference]: Finished difference. Result has 342 places, 455 transitions, 6063 flow [2024-06-20 16:24:50,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5518, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6063, PETRI_PLACES=342, PETRI_TRANSITIONS=455} [2024-06-20 16:24:50,610 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 299 predicate places. [2024-06-20 16:24:50,610 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 455 transitions, 6063 flow [2024-06-20 16:24:50,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:50,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:50,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:50,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-20 16:24:50,610 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:24:50,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:50,611 INFO L85 PathProgramCache]: Analyzing trace with hash 244938522, now seen corresponding path program 4 times [2024-06-20 16:24:50,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:50,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531552992] [2024-06-20 16:24:50,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:50,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:51,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:51,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:51,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531552992] [2024-06-20 16:24:51,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531552992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:51,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:51,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:24:51,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680368803] [2024-06-20 16:24:51,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:51,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:24:51,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:51,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:24:51,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:51,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:24:51,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 455 transitions, 6063 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:51,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:51,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:24:51,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:52,929 INFO L124 PetriNetUnfolderBase]: 3228/5094 cut-off events. [2024-06-20 16:24:52,929 INFO L125 PetriNetUnfolderBase]: For 1162656/1162659 co-relation queries the response was YES. [2024-06-20 16:24:52,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57870 conditions, 5094 events. 3228/5094 cut-off events. For 1162656/1162659 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 29862 event pairs, 667 based on Foata normal form. 5/5096 useless extension candidates. Maximal degree in co-relation 57708. Up to 4303 conditions per place. [2024-06-20 16:24:53,004 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 373 selfloop transitions, 102 changer transitions 0/480 dead transitions. [2024-06-20 16:24:53,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 480 transitions, 7587 flow [2024-06-20 16:24:53,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:53,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:53,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-20 16:24:53,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-20 16:24:53,005 INFO L175 Difference]: Start difference. First operand has 342 places, 455 transitions, 6063 flow. Second operand 10 states and 188 transitions. [2024-06-20 16:24:53,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 480 transitions, 7587 flow [2024-06-20 16:24:56,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 480 transitions, 7229 flow, removed 93 selfloop flow, removed 7 redundant places. [2024-06-20 16:24:56,407 INFO L231 Difference]: Finished difference. Result has 345 places, 455 transitions, 5916 flow [2024-06-20 16:24:56,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5705, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5916, PETRI_PLACES=345, PETRI_TRANSITIONS=455} [2024-06-20 16:24:56,408 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 302 predicate places. [2024-06-20 16:24:56,408 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 455 transitions, 5916 flow [2024-06-20 16:24:56,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:56,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:56,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:56,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-20 16:24:56,409 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:24:56,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:56,409 INFO L85 PathProgramCache]: Analyzing trace with hash 145362604, now seen corresponding path program 5 times [2024-06-20 16:24:56,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:56,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210282593] [2024-06-20 16:24:56,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:56,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:57,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:57,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:57,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210282593] [2024-06-20 16:24:57,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210282593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:57,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:57,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:24:57,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807280986] [2024-06-20 16:24:57,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:57,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:24:57,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:57,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:24:57,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:57,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:24:57,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 455 transitions, 5916 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:57,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:57,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:24:57,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:58,745 INFO L124 PetriNetUnfolderBase]: 3223/5090 cut-off events. [2024-06-20 16:24:58,745 INFO L125 PetriNetUnfolderBase]: For 1158830/1158833 co-relation queries the response was YES. [2024-06-20 16:24:58,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57228 conditions, 5090 events. 3223/5090 cut-off events. For 1158830/1158833 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 29908 event pairs, 663 based on Foata normal form. 5/5092 useless extension candidates. Maximal degree in co-relation 57066. Up to 4301 conditions per place. [2024-06-20 16:24:58,818 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 373 selfloop transitions, 102 changer transitions 0/480 dead transitions. [2024-06-20 16:24:58,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 480 transitions, 7444 flow [2024-06-20 16:24:58,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:58,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:58,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-20 16:24:58,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-20 16:24:58,820 INFO L175 Difference]: Start difference. First operand has 345 places, 455 transitions, 5916 flow. Second operand 10 states and 186 transitions. [2024-06-20 16:24:58,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 480 transitions, 7444 flow [2024-06-20 16:25:02,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 480 transitions, 6992 flow, removed 135 selfloop flow, removed 8 redundant places. [2024-06-20 16:25:02,316 INFO L231 Difference]: Finished difference. Result has 347 places, 455 transitions, 5676 flow [2024-06-20 16:25:02,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5464, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5676, PETRI_PLACES=347, PETRI_TRANSITIONS=455} [2024-06-20 16:25:02,317 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 304 predicate places. [2024-06-20 16:25:02,317 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 455 transitions, 5676 flow [2024-06-20 16:25:02,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:02,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:02,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:02,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-20 16:25:02,317 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:25:02,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:02,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1253545968, now seen corresponding path program 4 times [2024-06-20 16:25:02,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:02,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556327176] [2024-06-20 16:25:02,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:02,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:03,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:03,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:03,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556327176] [2024-06-20 16:25:03,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556327176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:03,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:03,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:25:03,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866095824] [2024-06-20 16:25:03,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:03,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:25:03,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:03,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:25:03,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:25:03,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:25:03,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 455 transitions, 5676 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-20 16:25:03,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:03,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:25:03,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:04,735 INFO L124 PetriNetUnfolderBase]: 3053/4907 cut-off events. [2024-06-20 16:25:04,735 INFO L125 PetriNetUnfolderBase]: For 1167579/1167581 co-relation queries the response was YES. [2024-06-20 16:25:04,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55840 conditions, 4907 events. 3053/4907 cut-off events. For 1167579/1167581 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 29599 event pairs, 675 based on Foata normal form. 3/4881 useless extension candidates. Maximal degree in co-relation 55677. Up to 4194 conditions per place. [2024-06-20 16:25:04,810 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 389 selfloop transitions, 52 changer transitions 0/480 dead transitions. [2024-06-20 16:25:04,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 480 transitions, 6766 flow [2024-06-20 16:25:04,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:25:04,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:25:04,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2024-06-20 16:25:04,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965986394557823 [2024-06-20 16:25:04,811 INFO L175 Difference]: Start difference. First operand has 347 places, 455 transitions, 5676 flow. Second operand 7 states and 146 transitions. [2024-06-20 16:25:04,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 480 transitions, 6766 flow [2024-06-20 16:25:08,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 480 transitions, 6506 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-20 16:25:08,603 INFO L231 Difference]: Finished difference. Result has 345 places, 458 transitions, 5677 flow [2024-06-20 16:25:08,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5416, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5677, PETRI_PLACES=345, PETRI_TRANSITIONS=458} [2024-06-20 16:25:08,604 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 302 predicate places. [2024-06-20 16:25:08,604 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 458 transitions, 5677 flow [2024-06-20 16:25:08,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-20 16:25:08,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:08,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:08,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-20 16:25:08,604 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:25:08,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:08,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1447186476, now seen corresponding path program 2 times [2024-06-20 16:25:08,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:08,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133090962] [2024-06-20 16:25:08,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:08,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:09,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:09,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:09,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133090962] [2024-06-20 16:25:09,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133090962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:09,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:09,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:25:09,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864041629] [2024-06-20 16:25:09,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:09,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:25:09,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:09,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:25:09,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:25:09,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:25:09,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 458 transitions, 5677 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:09,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:09,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:25:09,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:11,015 INFO L124 PetriNetUnfolderBase]: 3233/5075 cut-off events. [2024-06-20 16:25:11,015 INFO L125 PetriNetUnfolderBase]: For 1187295/1187297 co-relation queries the response was YES. [2024-06-20 16:25:11,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57312 conditions, 5075 events. 3233/5075 cut-off events. For 1187295/1187297 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 29527 event pairs, 759 based on Foata normal form. 1/5065 useless extension candidates. Maximal degree in co-relation 57149. Up to 4670 conditions per place. [2024-06-20 16:25:11,091 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 430 selfloop transitions, 46 changer transitions 0/481 dead transitions. [2024-06-20 16:25:11,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 481 transitions, 6817 flow [2024-06-20 16:25:11,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:25:11,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:25:11,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-20 16:25:11,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2024-06-20 16:25:11,092 INFO L175 Difference]: Start difference. First operand has 345 places, 458 transitions, 5677 flow. Second operand 9 states and 164 transitions. [2024-06-20 16:25:11,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 481 transitions, 6817 flow [2024-06-20 16:25:15,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 481 transitions, 6640 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-20 16:25:15,155 INFO L231 Difference]: Finished difference. Result has 349 places, 461 transitions, 5742 flow [2024-06-20 16:25:15,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5500, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5742, PETRI_PLACES=349, PETRI_TRANSITIONS=461} [2024-06-20 16:25:15,156 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 306 predicate places. [2024-06-20 16:25:15,156 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 461 transitions, 5742 flow [2024-06-20 16:25:15,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:15,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:15,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:15,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-20 16:25:15,156 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:25:15,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:15,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1486352154, now seen corresponding path program 3 times [2024-06-20 16:25:15,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:15,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302266835] [2024-06-20 16:25:15,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:15,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:16,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:16,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:16,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302266835] [2024-06-20 16:25:16,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302266835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:16,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:16,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:25:16,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092117464] [2024-06-20 16:25:16,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:16,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:25:16,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:16,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:25:16,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:25:16,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:25:16,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 461 transitions, 5742 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:16,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:16,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:25:16,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:17,614 INFO L124 PetriNetUnfolderBase]: 3238/5082 cut-off events. [2024-06-20 16:25:17,614 INFO L125 PetriNetUnfolderBase]: For 1209876/1209878 co-relation queries the response was YES. [2024-06-20 16:25:17,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57843 conditions, 5082 events. 3238/5082 cut-off events. For 1209876/1209878 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 29552 event pairs, 759 based on Foata normal form. 1/5072 useless extension candidates. Maximal degree in co-relation 57679. Up to 4677 conditions per place. [2024-06-20 16:25:17,689 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 432 selfloop transitions, 47 changer transitions 0/484 dead transitions. [2024-06-20 16:25:17,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 484 transitions, 6894 flow [2024-06-20 16:25:17,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:25:17,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:25:17,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-20 16:25:17,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2024-06-20 16:25:17,690 INFO L175 Difference]: Start difference. First operand has 349 places, 461 transitions, 5742 flow. Second operand 9 states and 164 transitions. [2024-06-20 16:25:17,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 484 transitions, 6894 flow [2024-06-20 16:25:21,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 484 transitions, 6674 flow, removed 66 selfloop flow, removed 7 redundant places. [2024-06-20 16:25:21,342 INFO L231 Difference]: Finished difference. Result has 351 places, 464 transitions, 5772 flow [2024-06-20 16:25:21,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5522, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5772, PETRI_PLACES=351, PETRI_TRANSITIONS=464} [2024-06-20 16:25:21,343 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 308 predicate places. [2024-06-20 16:25:21,343 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 464 transitions, 5772 flow [2024-06-20 16:25:21,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:21,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:21,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:21,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-20 16:25:21,343 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:25:21,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:21,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1486351782, now seen corresponding path program 5 times [2024-06-20 16:25:21,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:21,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875182248] [2024-06-20 16:25:21,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:21,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:22,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:22,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875182248] [2024-06-20 16:25:22,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875182248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:22,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:22,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:25:22,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511293827] [2024-06-20 16:25:22,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:22,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:25:22,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:22,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:25:22,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:25:22,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:25:22,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 464 transitions, 5772 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-20 16:25:22,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:22,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:25:22,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:23,570 INFO L124 PetriNetUnfolderBase]: 3068/4941 cut-off events. [2024-06-20 16:25:23,571 INFO L125 PetriNetUnfolderBase]: For 1239391/1239397 co-relation queries the response was YES. [2024-06-20 16:25:23,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56986 conditions, 4941 events. 3068/4941 cut-off events. For 1239391/1239397 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 29917 event pairs, 659 based on Foata normal form. 7/4894 useless extension candidates. Maximal degree in co-relation 56821. Up to 4137 conditions per place. [2024-06-20 16:25:23,651 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 366 selfloop transitions, 77 changer transitions 0/484 dead transitions. [2024-06-20 16:25:23,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 484 transitions, 6870 flow [2024-06-20 16:25:23,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:25:23,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:25:23,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-20 16:25:23,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2024-06-20 16:25:23,652 INFO L175 Difference]: Start difference. First operand has 351 places, 464 transitions, 5772 flow. Second operand 7 states and 141 transitions. [2024-06-20 16:25:23,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 484 transitions, 6870 flow [2024-06-20 16:25:28,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 484 transitions, 6642 flow, removed 69 selfloop flow, removed 7 redundant places. [2024-06-20 16:25:28,012 INFO L231 Difference]: Finished difference. Result has 351 places, 467 transitions, 5865 flow [2024-06-20 16:25:28,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5544, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5865, PETRI_PLACES=351, PETRI_TRANSITIONS=467} [2024-06-20 16:25:28,012 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 308 predicate places. [2024-06-20 16:25:28,012 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 467 transitions, 5865 flow [2024-06-20 16:25:28,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-20 16:25:28,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:28,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:28,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-20 16:25:28,013 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:25:28,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:28,013 INFO L85 PathProgramCache]: Analyzing trace with hash 487621554, now seen corresponding path program 4 times [2024-06-20 16:25:28,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:28,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875247147] [2024-06-20 16:25:28,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:28,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:29,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:29,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:29,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875247147] [2024-06-20 16:25:29,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875247147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:29,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:29,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:25:29,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893175765] [2024-06-20 16:25:29,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:29,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:25:29,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:29,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:25:29,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:25:29,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:25:29,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 467 transitions, 5865 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:29,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:29,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:25:29,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:30,485 INFO L124 PetriNetUnfolderBase]: 3248/5097 cut-off events. [2024-06-20 16:25:30,485 INFO L125 PetriNetUnfolderBase]: For 1257426/1257428 co-relation queries the response was YES. [2024-06-20 16:25:30,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59046 conditions, 5097 events. 3248/5097 cut-off events. For 1257426/1257428 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 29678 event pairs, 789 based on Foata normal form. 3/5090 useless extension candidates. Maximal degree in co-relation 58880. Up to 4657 conditions per place. [2024-06-20 16:25:30,566 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 416 selfloop transitions, 72 changer transitions 0/493 dead transitions. [2024-06-20 16:25:30,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 493 transitions, 7452 flow [2024-06-20 16:25:30,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:25:30,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:25:30,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-20 16:25:30,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261904761904762 [2024-06-20 16:25:30,567 INFO L175 Difference]: Start difference. First operand has 351 places, 467 transitions, 5865 flow. Second operand 10 states and 179 transitions. [2024-06-20 16:25:30,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 493 transitions, 7452 flow [2024-06-20 16:25:35,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 493 transitions, 7201 flow, removed 56 selfloop flow, removed 5 redundant places. [2024-06-20 16:25:35,006 INFO L231 Difference]: Finished difference. Result has 356 places, 473 transitions, 6076 flow [2024-06-20 16:25:35,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5616, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6076, PETRI_PLACES=356, PETRI_TRANSITIONS=473} [2024-06-20 16:25:35,007 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 313 predicate places. [2024-06-20 16:25:35,007 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 473 transitions, 6076 flow [2024-06-20 16:25:35,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:35,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:35,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:35,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-20 16:25:35,007 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:25:35,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:35,008 INFO L85 PathProgramCache]: Analyzing trace with hash -283016382, now seen corresponding path program 6 times [2024-06-20 16:25:35,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:35,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512125988] [2024-06-20 16:25:35,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:35,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:36,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:36,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:36,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512125988] [2024-06-20 16:25:36,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512125988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:36,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:36,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:25:36,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663492474] [2024-06-20 16:25:36,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:36,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:25:36,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:36,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:25:36,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:25:36,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:25:36,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 473 transitions, 6076 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-20 16:25:36,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:36,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:25:36,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:37,332 INFO L124 PetriNetUnfolderBase]: 3066/4949 cut-off events. [2024-06-20 16:25:37,332 INFO L125 PetriNetUnfolderBase]: For 1281520/1281528 co-relation queries the response was YES. [2024-06-20 16:25:37,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57786 conditions, 4949 events. 3066/4949 cut-off events. For 1281520/1281528 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 30096 event pairs, 705 based on Foata normal form. 7/4883 useless extension candidates. Maximal degree in co-relation 57619. Up to 4064 conditions per place. [2024-06-20 16:25:37,410 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 342 selfloop transitions, 103 changer transitions 0/488 dead transitions. [2024-06-20 16:25:37,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 488 transitions, 7180 flow [2024-06-20 16:25:37,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:25:37,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:25:37,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-20 16:25:37,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-06-20 16:25:37,411 INFO L175 Difference]: Start difference. First operand has 356 places, 473 transitions, 6076 flow. Second operand 7 states and 138 transitions. [2024-06-20 16:25:37,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 488 transitions, 7180 flow [2024-06-20 16:25:42,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 488 transitions, 6891 flow, removed 94 selfloop flow, removed 7 redundant places. [2024-06-20 16:25:42,440 INFO L231 Difference]: Finished difference. Result has 356 places, 476 transitions, 6163 flow [2024-06-20 16:25:42,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5787, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6163, PETRI_PLACES=356, PETRI_TRANSITIONS=476} [2024-06-20 16:25:42,441 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 313 predicate places. [2024-06-20 16:25:42,441 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 476 transitions, 6163 flow [2024-06-20 16:25:42,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-20 16:25:42,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:42,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:42,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-20 16:25:42,442 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:25:42,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:42,442 INFO L85 PathProgramCache]: Analyzing trace with hash 488037264, now seen corresponding path program 5 times [2024-06-20 16:25:42,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:42,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391349613] [2024-06-20 16:25:42,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:42,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:43,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:43,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:43,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391349613] [2024-06-20 16:25:43,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391349613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:43,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:43,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:25:43,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068663333] [2024-06-20 16:25:43,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:43,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:25:43,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:43,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:25:43,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:25:43,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:25:43,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 476 transitions, 6163 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:43,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:43,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:25:43,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:44,912 INFO L124 PetriNetUnfolderBase]: 3242/5090 cut-off events. [2024-06-20 16:25:44,912 INFO L125 PetriNetUnfolderBase]: For 1286546/1286548 co-relation queries the response was YES. [2024-06-20 16:25:44,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59481 conditions, 5090 events. 3242/5090 cut-off events. For 1286546/1286548 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 29638 event pairs, 759 based on Foata normal form. 1/5080 useless extension candidates. Maximal degree in co-relation 59313. Up to 4650 conditions per place. [2024-06-20 16:25:44,996 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 414 selfloop transitions, 74 changer transitions 0/493 dead transitions. [2024-06-20 16:25:44,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 493 transitions, 7181 flow [2024-06-20 16:25:44,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:25:44,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:25:44,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-20 16:25:44,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-20 16:25:44,997 INFO L175 Difference]: Start difference. First operand has 356 places, 476 transitions, 6163 flow. Second operand 9 states and 165 transitions. [2024-06-20 16:25:44,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 493 transitions, 7181 flow [2024-06-20 16:25:50,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 493 transitions, 6755 flow, removed 116 selfloop flow, removed 5 redundant places. [2024-06-20 16:25:50,053 INFO L231 Difference]: Finished difference. Result has 360 places, 476 transitions, 5891 flow [2024-06-20 16:25:50,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5737, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5891, PETRI_PLACES=360, PETRI_TRANSITIONS=476} [2024-06-20 16:25:50,053 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 317 predicate places. [2024-06-20 16:25:50,053 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 476 transitions, 5891 flow [2024-06-20 16:25:50,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:50,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:50,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:50,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-20 16:25:50,054 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:25:50,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:50,054 INFO L85 PathProgramCache]: Analyzing trace with hash 891444759, now seen corresponding path program 5 times [2024-06-20 16:25:50,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:50,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414853367] [2024-06-20 16:25:50,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:50,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:50,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:50,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:50,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414853367] [2024-06-20 16:25:50,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414853367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:50,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:50,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:25:50,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492094676] [2024-06-20 16:25:50,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:50,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:25:50,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:50,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:25:50,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:25:50,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:25:50,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 476 transitions, 5891 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:50,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:50,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:25:50,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:52,200 INFO L124 PetriNetUnfolderBase]: 3228/5074 cut-off events. [2024-06-20 16:25:52,200 INFO L125 PetriNetUnfolderBase]: For 1294121/1294123 co-relation queries the response was YES. [2024-06-20 16:25:52,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58944 conditions, 5074 events. 3228/5074 cut-off events. For 1294121/1294123 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 29564 event pairs, 740 based on Foata normal form. 2/5069 useless extension candidates. Maximal degree in co-relation 58775. Up to 4724 conditions per place. [2024-06-20 16:25:52,284 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 461 selfloop transitions, 30 changer transitions 0/496 dead transitions. [2024-06-20 16:25:52,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 496 transitions, 6957 flow [2024-06-20 16:25:52,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:25:52,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:25:52,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-20 16:25:52,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-20 16:25:52,285 INFO L175 Difference]: Start difference. First operand has 360 places, 476 transitions, 5891 flow. Second operand 9 states and 161 transitions. [2024-06-20 16:25:52,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 496 transitions, 6957 flow [2024-06-20 16:25:57,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 496 transitions, 6765 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-20 16:25:57,356 INFO L231 Difference]: Finished difference. Result has 361 places, 476 transitions, 5765 flow [2024-06-20 16:25:57,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5699, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5765, PETRI_PLACES=361, PETRI_TRANSITIONS=476} [2024-06-20 16:25:57,357 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 318 predicate places. [2024-06-20 16:25:57,357 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 476 transitions, 5765 flow [2024-06-20 16:25:57,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:57,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:57,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:57,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-20 16:25:57,357 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:25:57,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:57,358 INFO L85 PathProgramCache]: Analyzing trace with hash -998415879, now seen corresponding path program 6 times [2024-06-20 16:25:57,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:57,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636596534] [2024-06-20 16:25:57,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:57,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:58,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:58,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:58,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636596534] [2024-06-20 16:25:58,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636596534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:58,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:58,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:25:58,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101577919] [2024-06-20 16:25:58,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:58,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:25:58,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:58,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:25:58,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:25:58,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:25:58,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 476 transitions, 5765 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:58,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:58,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:25:58,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:59,553 INFO L124 PetriNetUnfolderBase]: 3270/5154 cut-off events. [2024-06-20 16:25:59,554 INFO L125 PetriNetUnfolderBase]: For 1347191/1347193 co-relation queries the response was YES. [2024-06-20 16:25:59,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60089 conditions, 5154 events. 3270/5154 cut-off events. For 1347191/1347193 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 30317 event pairs, 703 based on Foata normal form. 2/5149 useless extension candidates. Maximal degree in co-relation 59919. Up to 4662 conditions per place. [2024-06-20 16:25:59,637 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 437 selfloop transitions, 64 changer transitions 0/506 dead transitions. [2024-06-20 16:25:59,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 506 transitions, 7633 flow [2024-06-20 16:25:59,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:25:59,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:25:59,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-20 16:25:59,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-20 16:25:59,638 INFO L175 Difference]: Start difference. First operand has 361 places, 476 transitions, 5765 flow. Second operand 9 states and 167 transitions. [2024-06-20 16:25:59,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 506 transitions, 7633 flow [2024-06-20 16:26:04,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 506 transitions, 7261 flow, removed 11 selfloop flow, removed 13 redundant places. [2024-06-20 16:26:04,922 INFO L231 Difference]: Finished difference. Result has 359 places, 486 transitions, 5862 flow [2024-06-20 16:26:04,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5393, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5862, PETRI_PLACES=359, PETRI_TRANSITIONS=486} [2024-06-20 16:26:04,922 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 316 predicate places. [2024-06-20 16:26:04,922 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 486 transitions, 5862 flow [2024-06-20 16:26:04,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:26:04,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:04,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:04,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-20 16:26:04,922 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:26:04,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:04,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1079390199, now seen corresponding path program 7 times [2024-06-20 16:26:04,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:04,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43114318] [2024-06-20 16:26:04,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:04,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:05,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:05,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:05,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43114318] [2024-06-20 16:26:05,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43114318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:05,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:05,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:26:05,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691307907] [2024-06-20 16:26:05,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:05,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:26:05,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:05,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:26:05,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:26:05,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:26:05,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 486 transitions, 5862 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:26:05,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:05,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:26:05,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:07,138 INFO L124 PetriNetUnfolderBase]: 3264/5146 cut-off events. [2024-06-20 16:26:07,138 INFO L125 PetriNetUnfolderBase]: For 1348881/1348883 co-relation queries the response was YES. [2024-06-20 16:26:07,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59964 conditions, 5146 events. 3264/5146 cut-off events. For 1348881/1348883 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 30212 event pairs, 698 based on Foata normal form. 2/5141 useless extension candidates. Maximal degree in co-relation 59791. Up to 4657 conditions per place. [2024-06-20 16:26:07,225 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 433 selfloop transitions, 67 changer transitions 0/505 dead transitions. [2024-06-20 16:26:07,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 505 transitions, 7202 flow [2024-06-20 16:26:07,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:26:07,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:26:07,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-20 16:26:07,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43915343915343913 [2024-06-20 16:26:07,226 INFO L175 Difference]: Start difference. First operand has 359 places, 486 transitions, 5862 flow. Second operand 9 states and 166 transitions. [2024-06-20 16:26:07,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 505 transitions, 7202 flow [2024-06-20 16:26:12,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 505 transitions, 6977 flow, removed 66 selfloop flow, removed 6 redundant places. [2024-06-20 16:26:12,381 INFO L231 Difference]: Finished difference. Result has 362 places, 486 transitions, 5777 flow [2024-06-20 16:26:12,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5637, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5777, PETRI_PLACES=362, PETRI_TRANSITIONS=486} [2024-06-20 16:26:12,382 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 319 predicate places. [2024-06-20 16:26:12,382 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 486 transitions, 5777 flow [2024-06-20 16:26:12,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:26:12,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:12,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:12,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-20 16:26:12,382 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:26:12,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:12,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1214258641, now seen corresponding path program 8 times [2024-06-20 16:26:12,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:12,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491264996] [2024-06-20 16:26:12,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:12,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:13,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:13,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:13,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491264996] [2024-06-20 16:26:13,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491264996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:13,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:13,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:26:13,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426482832] [2024-06-20 16:26:13,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:13,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:26:13,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:13,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:26:13,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:26:13,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:26:13,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 486 transitions, 5777 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:26:13,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:13,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:26:13,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:14,750 INFO L124 PetriNetUnfolderBase]: 3258/5132 cut-off events. [2024-06-20 16:26:14,751 INFO L125 PetriNetUnfolderBase]: For 1350590/1350592 co-relation queries the response was YES. [2024-06-20 16:26:14,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59615 conditions, 5132 events. 3258/5132 cut-off events. For 1350590/1350592 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 30105 event pairs, 711 based on Foata normal form. 2/5127 useless extension candidates. Maximal degree in co-relation 59441. Up to 4652 conditions per place. [2024-06-20 16:26:14,842 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 437 selfloop transitions, 62 changer transitions 0/504 dead transitions. [2024-06-20 16:26:14,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 504 transitions, 6865 flow [2024-06-20 16:26:14,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:26:14,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:26:14,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-20 16:26:14,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-20 16:26:14,843 INFO L175 Difference]: Start difference. First operand has 362 places, 486 transitions, 5777 flow. Second operand 9 states and 165 transitions. [2024-06-20 16:26:14,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 504 transitions, 6865 flow [2024-06-20 16:26:19,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 504 transitions, 6688 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-20 16:26:19,702 INFO L231 Difference]: Finished difference. Result has 364 places, 486 transitions, 5730 flow [2024-06-20 16:26:19,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5600, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5730, PETRI_PLACES=364, PETRI_TRANSITIONS=486} [2024-06-20 16:26:19,703 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 321 predicate places. [2024-06-20 16:26:19,703 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 486 transitions, 5730 flow [2024-06-20 16:26:19,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:26:19,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:19,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:19,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-20 16:26:19,704 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:26:19,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:19,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1514652049, now seen corresponding path program 9 times [2024-06-20 16:26:19,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:19,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296581506] [2024-06-20 16:26:19,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:19,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:20,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:20,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:20,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296581506] [2024-06-20 16:26:20,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296581506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:20,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:20,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:26:20,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339486403] [2024-06-20 16:26:20,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:20,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:26:20,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:20,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:26:20,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:26:20,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:26:20,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 486 transitions, 5730 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:26:20,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:20,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:26:20,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:22,109 INFO L124 PetriNetUnfolderBase]: 3278/5196 cut-off events. [2024-06-20 16:26:22,109 INFO L125 PetriNetUnfolderBase]: For 1388311/1388316 co-relation queries the response was YES. [2024-06-20 16:26:22,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60022 conditions, 5196 events. 3278/5196 cut-off events. For 1388311/1388316 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 30806 event pairs, 680 based on Foata normal form. 6/5194 useless extension candidates. Maximal degree in co-relation 59847. Up to 4004 conditions per place. [2024-06-20 16:26:22,185 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 334 selfloop transitions, 169 changer transitions 0/508 dead transitions. [2024-06-20 16:26:22,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 508 transitions, 7457 flow [2024-06-20 16:26:22,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:26:22,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:26:22,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-20 16:26:22,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-20 16:26:22,187 INFO L175 Difference]: Start difference. First operand has 364 places, 486 transitions, 5730 flow. Second operand 9 states and 171 transitions. [2024-06-20 16:26:22,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 508 transitions, 7457 flow [2024-06-20 16:26:27,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 508 transitions, 7363 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-20 16:26:27,196 INFO L231 Difference]: Finished difference. Result has 367 places, 490 transitions, 6103 flow [2024-06-20 16:26:27,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5636, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6103, PETRI_PLACES=367, PETRI_TRANSITIONS=490} [2024-06-20 16:26:27,197 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 324 predicate places. [2024-06-20 16:26:27,197 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 490 transitions, 6103 flow [2024-06-20 16:26:27,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:26:27,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:27,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:27,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-20 16:26:27,198 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:26:27,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:27,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1220135305, now seen corresponding path program 10 times [2024-06-20 16:26:27,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:27,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212995609] [2024-06-20 16:26:27,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:27,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:28,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:28,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:28,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212995609] [2024-06-20 16:26:28,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212995609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:28,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:28,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:26:28,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186441451] [2024-06-20 16:26:28,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:28,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:26:28,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:28,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:26:28,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:26:28,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:26:28,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 490 transitions, 6103 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:26:28,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:28,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:26:28,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:29,395 INFO L124 PetriNetUnfolderBase]: 3298/5224 cut-off events. [2024-06-20 16:26:29,395 INFO L125 PetriNetUnfolderBase]: For 1411845/1411850 co-relation queries the response was YES. [2024-06-20 16:26:29,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61027 conditions, 5224 events. 3298/5224 cut-off events. For 1411845/1411850 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 30965 event pairs, 680 based on Foata normal form. 6/5222 useless extension candidates. Maximal degree in co-relation 60851. Up to 4020 conditions per place. [2024-06-20 16:26:29,478 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 336 selfloop transitions, 171 changer transitions 0/512 dead transitions. [2024-06-20 16:26:29,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 512 transitions, 7850 flow [2024-06-20 16:26:29,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:26:29,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:26:29,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-20 16:26:29,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-06-20 16:26:29,480 INFO L175 Difference]: Start difference. First operand has 367 places, 490 transitions, 6103 flow. Second operand 9 states and 172 transitions. [2024-06-20 16:26:29,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 512 transitions, 7850 flow [2024-06-20 16:26:34,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 512 transitions, 7466 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-20 16:26:34,777 INFO L231 Difference]: Finished difference. Result has 370 places, 494 transitions, 6195 flow [2024-06-20 16:26:34,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5722, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6195, PETRI_PLACES=370, PETRI_TRANSITIONS=494} [2024-06-20 16:26:34,777 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 327 predicate places. [2024-06-20 16:26:34,778 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 494 transitions, 6195 flow [2024-06-20 16:26:34,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:26:34,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:34,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:34,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-20 16:26:34,778 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:26:34,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:34,779 INFO L85 PathProgramCache]: Analyzing trace with hash 801174323, now seen corresponding path program 11 times [2024-06-20 16:26:34,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:34,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709422755] [2024-06-20 16:26:34,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:34,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:35,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:35,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:35,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709422755] [2024-06-20 16:26:35,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709422755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:35,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:35,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:26:35,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229155688] [2024-06-20 16:26:35,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:35,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:26:35,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:35,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:26:35,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:26:35,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:26:35,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 494 transitions, 6195 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:26:35,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:35,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:26:35,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:36,966 INFO L124 PetriNetUnfolderBase]: 3324/5270 cut-off events. [2024-06-20 16:26:36,966 INFO L125 PetriNetUnfolderBase]: For 1432830/1432835 co-relation queries the response was YES. [2024-06-20 16:26:37,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61775 conditions, 5270 events. 3324/5270 cut-off events. For 1432830/1432835 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 31449 event pairs, 698 based on Foata normal form. 4/5266 useless extension candidates. Maximal degree in co-relation 61598. Up to 4035 conditions per place. [2024-06-20 16:26:37,057 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 305 selfloop transitions, 209 changer transitions 0/519 dead transitions. [2024-06-20 16:26:37,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 519 transitions, 8046 flow [2024-06-20 16:26:37,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:26:37,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:26:37,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-20 16:26:37,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-20 16:26:37,058 INFO L175 Difference]: Start difference. First operand has 370 places, 494 transitions, 6195 flow. Second operand 9 states and 170 transitions. [2024-06-20 16:26:37,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 519 transitions, 8046 flow [2024-06-20 16:26:42,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 519 transitions, 7657 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-20 16:26:42,612 INFO L231 Difference]: Finished difference. Result has 373 places, 501 transitions, 6441 flow [2024-06-20 16:26:42,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5816, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6441, PETRI_PLACES=373, PETRI_TRANSITIONS=501} [2024-06-20 16:26:42,612 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 330 predicate places. [2024-06-20 16:26:42,612 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 501 transitions, 6441 flow [2024-06-20 16:26:42,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:26:42,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:42,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:42,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-20 16:26:42,613 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:26:42,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:42,613 INFO L85 PathProgramCache]: Analyzing trace with hash -408267981, now seen corresponding path program 12 times [2024-06-20 16:26:42,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:42,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5489059] [2024-06-20 16:26:42,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:42,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:43,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:43,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:43,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5489059] [2024-06-20 16:26:43,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5489059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:43,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:43,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:26:43,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036323604] [2024-06-20 16:26:43,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:43,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:26:43,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:43,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:26:43,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:26:43,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:26:43,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 501 transitions, 6441 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:26:43,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:43,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:26:43,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:44,857 INFO L124 PetriNetUnfolderBase]: 3360/5314 cut-off events. [2024-06-20 16:26:44,857 INFO L125 PetriNetUnfolderBase]: For 1488978/1488983 co-relation queries the response was YES. [2024-06-20 16:26:44,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62836 conditions, 5314 events. 3360/5314 cut-off events. For 1488978/1488983 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 31560 event pairs, 692 based on Foata normal form. 6/5312 useless extension candidates. Maximal degree in co-relation 62658. Up to 4054 conditions per place. [2024-06-20 16:26:44,940 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 330 selfloop transitions, 193 changer transitions 0/528 dead transitions. [2024-06-20 16:26:44,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 528 transitions, 8412 flow [2024-06-20 16:26:44,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:26:44,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:26:44,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-20 16:26:44,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-20 16:26:44,941 INFO L175 Difference]: Start difference. First operand has 373 places, 501 transitions, 6441 flow. Second operand 9 states and 171 transitions. [2024-06-20 16:26:44,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 528 transitions, 8412 flow [2024-06-20 16:26:50,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 528 transitions, 7925 flow, removed 66 selfloop flow, removed 7 redundant places. [2024-06-20 16:26:50,554 INFO L231 Difference]: Finished difference. Result has 376 places, 510 transitions, 6704 flow [2024-06-20 16:26:50,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5989, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6704, PETRI_PLACES=376, PETRI_TRANSITIONS=510} [2024-06-20 16:26:50,554 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 333 predicate places. [2024-06-20 16:26:50,554 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 510 transitions, 6704 flow [2024-06-20 16:26:50,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:26:50,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:50,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:50,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-20 16:26:50,555 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:26:50,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:50,555 INFO L85 PathProgramCache]: Analyzing trace with hash 800728853, now seen corresponding path program 13 times [2024-06-20 16:26:50,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:50,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531348934] [2024-06-20 16:26:50,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:50,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:51,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:51,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:51,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531348934] [2024-06-20 16:26:51,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531348934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:51,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:51,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:26:51,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569668078] [2024-06-20 16:26:51,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:51,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:26:51,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:51,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:26:51,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:26:51,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:26:51,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 510 transitions, 6704 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:26:51,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:51,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:26:51,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:52,936 INFO L124 PetriNetUnfolderBase]: 3354/5316 cut-off events. [2024-06-20 16:26:52,936 INFO L125 PetriNetUnfolderBase]: For 1475351/1475356 co-relation queries the response was YES. [2024-06-20 16:26:52,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62433 conditions, 5316 events. 3354/5316 cut-off events. For 1475351/1475356 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 31678 event pairs, 695 based on Foata normal form. 4/5312 useless extension candidates. Maximal degree in co-relation 62255. Up to 4051 conditions per place. [2024-06-20 16:26:53,015 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 308 selfloop transitions, 215 changer transitions 0/528 dead transitions. [2024-06-20 16:26:53,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 528 transitions, 8370 flow [2024-06-20 16:26:53,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:26:53,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:26:53,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-20 16:26:53,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-20 16:26:53,016 INFO L175 Difference]: Start difference. First operand has 376 places, 510 transitions, 6704 flow. Second operand 9 states and 170 transitions. [2024-06-20 16:26:53,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 528 transitions, 8370 flow [2024-06-20 16:26:59,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 528 transitions, 8052 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-20 16:26:59,208 INFO L231 Difference]: Finished difference. Result has 380 places, 510 transitions, 6822 flow [2024-06-20 16:26:59,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6386, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6822, PETRI_PLACES=380, PETRI_TRANSITIONS=510} [2024-06-20 16:26:59,208 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 337 predicate places. [2024-06-20 16:26:59,208 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 510 transitions, 6822 flow [2024-06-20 16:26:59,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:26:59,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:59,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:59,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-20 16:26:59,209 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:26:59,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:59,209 INFO L85 PathProgramCache]: Analyzing trace with hash -264377451, now seen corresponding path program 14 times [2024-06-20 16:26:59,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:59,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441694849] [2024-06-20 16:26:59,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:59,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:27:00,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:27:00,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:27:00,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441694849] [2024-06-20 16:27:00,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441694849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:27:00,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:27:00,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:27:00,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841088348] [2024-06-20 16:27:00,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:27:00,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:27:00,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:27:00,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:27:00,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:27:00,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:27:00,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 510 transitions, 6822 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:27:00,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:27:00,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:27:00,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:27:01,562 INFO L124 PetriNetUnfolderBase]: 3344/5290 cut-off events. [2024-06-20 16:27:01,562 INFO L125 PetriNetUnfolderBase]: For 1478507/1478512 co-relation queries the response was YES. [2024-06-20 16:27:01,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62242 conditions, 5290 events. 3344/5290 cut-off events. For 1478507/1478512 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 31444 event pairs, 692 based on Foata normal form. 4/5286 useless extension candidates. Maximal degree in co-relation 62063. Up to 4043 conditions per place. [2024-06-20 16:27:01,646 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 307 selfloop transitions, 216 changer transitions 0/528 dead transitions. [2024-06-20 16:27:01,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 528 transitions, 8492 flow [2024-06-20 16:27:01,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:27:01,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:27:01,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-20 16:27:01,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-20 16:27:01,647 INFO L175 Difference]: Start difference. First operand has 380 places, 510 transitions, 6822 flow. Second operand 9 states and 168 transitions. [2024-06-20 16:27:01,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 528 transitions, 8492 flow [2024-06-20 16:27:08,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 528 transitions, 7965 flow, removed 65 selfloop flow, removed 6 redundant places. [2024-06-20 16:27:08,462 INFO L231 Difference]: Finished difference. Result has 383 places, 510 transitions, 6733 flow [2024-06-20 16:27:08,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6295, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6733, PETRI_PLACES=383, PETRI_TRANSITIONS=510} [2024-06-20 16:27:08,463 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 340 predicate places. [2024-06-20 16:27:08,463 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 510 transitions, 6733 flow [2024-06-20 16:27:08,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:27:08,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:27:08,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:27:08,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-20 16:27:08,463 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:27:08,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:27:08,464 INFO L85 PathProgramCache]: Analyzing trace with hash -901134699, now seen corresponding path program 15 times [2024-06-20 16:27:08,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:27:08,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276428029] [2024-06-20 16:27:08,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:27:08,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:27:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:27:09,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:27:09,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:27:09,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276428029] [2024-06-20 16:27:09,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276428029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:27:09,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:27:09,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:27:09,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932166646] [2024-06-20 16:27:09,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:27:09,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:27:09,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:27:09,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:27:09,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:27:09,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:27:09,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 510 transitions, 6733 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:27:09,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:27:09,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:27:09,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:27:11,036 INFO L124 PetriNetUnfolderBase]: 3364/5334 cut-off events. [2024-06-20 16:27:11,037 INFO L125 PetriNetUnfolderBase]: For 1516782/1516787 co-relation queries the response was YES. [2024-06-20 16:27:11,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62563 conditions, 5334 events. 3364/5334 cut-off events. For 1516782/1516787 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 31858 event pairs, 674 based on Foata normal form. 6/5332 useless extension candidates. Maximal degree in co-relation 62383. Up to 4059 conditions per place. [2024-06-20 16:27:11,119 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 337 selfloop transitions, 190 changer transitions 0/532 dead transitions. [2024-06-20 16:27:11,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 532 transitions, 8541 flow [2024-06-20 16:27:11,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:27:11,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:27:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-20 16:27:11,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-20 16:27:11,120 INFO L175 Difference]: Start difference. First operand has 383 places, 510 transitions, 6733 flow. Second operand 9 states and 170 transitions. [2024-06-20 16:27:11,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 532 transitions, 8541 flow [2024-06-20 16:27:17,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 532 transitions, 7833 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-20 16:27:17,229 INFO L231 Difference]: Finished difference. Result has 380 places, 514 transitions, 6542 flow [2024-06-20 16:27:17,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6038, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6542, PETRI_PLACES=380, PETRI_TRANSITIONS=514} [2024-06-20 16:27:17,230 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 337 predicate places. [2024-06-20 16:27:17,230 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 514 transitions, 6542 flow [2024-06-20 16:27:17,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:27:17,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:27:17,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:27:17,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-20 16:27:17,230 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:27:17,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:27:17,230 INFO L85 PathProgramCache]: Analyzing trace with hash -901401609, now seen corresponding path program 16 times [2024-06-20 16:27:17,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:27:17,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018058155] [2024-06-20 16:27:17,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:27:17,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:27:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:27:18,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:27:18,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:27:18,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018058155] [2024-06-20 16:27:18,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018058155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:27:18,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:27:18,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:27:18,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130446021] [2024-06-20 16:27:18,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:27:18,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:27:18,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:27:18,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:27:18,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:27:18,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:27:18,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 514 transitions, 6542 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:27:18,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:27:18,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:27:18,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:27:19,645 INFO L124 PetriNetUnfolderBase]: 3352/5318 cut-off events. [2024-06-20 16:27:19,645 INFO L125 PetriNetUnfolderBase]: For 1499266/1499271 co-relation queries the response was YES. [2024-06-20 16:27:19,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61611 conditions, 5318 events. 3352/5318 cut-off events. For 1499266/1499271 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 31825 event pairs, 674 based on Foata normal form. 6/5316 useless extension candidates. Maximal degree in co-relation 61431. Up to 4051 conditions per place. [2024-06-20 16:27:19,728 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 335 selfloop transitions, 192 changer transitions 0/532 dead transitions. [2024-06-20 16:27:19,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 532 transitions, 8228 flow [2024-06-20 16:27:19,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:27:19,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:27:19,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-20 16:27:19,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-20 16:27:19,729 INFO L175 Difference]: Start difference. First operand has 380 places, 514 transitions, 6542 flow. Second operand 9 states and 170 transitions. [2024-06-20 16:27:19,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 532 transitions, 8228 flow [2024-06-20 16:27:25,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 532 transitions, 7809 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-20 16:27:25,910 INFO L231 Difference]: Finished difference. Result has 383 places, 514 transitions, 6514 flow [2024-06-20 16:27:25,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6123, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6514, PETRI_PLACES=383, PETRI_TRANSITIONS=514} [2024-06-20 16:27:25,910 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 340 predicate places. [2024-06-20 16:27:25,910 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 514 transitions, 6514 flow [2024-06-20 16:27:25,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:27:25,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:27:25,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:27:25,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-20 16:27:25,911 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:27:25,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:27:25,911 INFO L85 PathProgramCache]: Analyzing trace with hash -896759979, now seen corresponding path program 17 times [2024-06-20 16:27:25,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:27:25,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588316991] [2024-06-20 16:27:25,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:27:25,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:27:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:27:26,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:27:26,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:27:26,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588316991] [2024-06-20 16:27:26,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588316991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:27:26,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:27:26,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:27:26,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477424764] [2024-06-20 16:27:26,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:27:26,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:27:26,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:27:26,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:27:26,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:27:26,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:27:26,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 514 transitions, 6514 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:27:26,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:27:26,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:27:26,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:27:28,182 INFO L124 PetriNetUnfolderBase]: 3342/5302 cut-off events. [2024-06-20 16:27:28,182 INFO L125 PetriNetUnfolderBase]: For 1481971/1481976 co-relation queries the response was YES. [2024-06-20 16:27:28,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61275 conditions, 5302 events. 3342/5302 cut-off events. For 1481971/1481976 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 31700 event pairs, 684 based on Foata normal form. 4/5298 useless extension candidates. Maximal degree in co-relation 61094. Up to 4043 conditions per place. [2024-06-20 16:27:28,461 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 314 selfloop transitions, 213 changer transitions 0/532 dead transitions. [2024-06-20 16:27:28,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 532 transitions, 8204 flow [2024-06-20 16:27:28,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:27:28,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:27:28,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-20 16:27:28,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-20 16:27:28,462 INFO L175 Difference]: Start difference. First operand has 383 places, 514 transitions, 6514 flow. Second operand 9 states and 168 transitions. [2024-06-20 16:27:28,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 532 transitions, 8204 flow [2024-06-20 16:27:36,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 532 transitions, 7714 flow, removed 66 selfloop flow, removed 6 redundant places. [2024-06-20 16:27:36,677 INFO L231 Difference]: Finished difference. Result has 386 places, 514 transitions, 6456 flow [2024-06-20 16:27:36,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6024, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6456, PETRI_PLACES=386, PETRI_TRANSITIONS=514} [2024-06-20 16:27:36,677 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 343 predicate places. [2024-06-20 16:27:36,677 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 514 transitions, 6456 flow [2024-06-20 16:27:36,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:27:36,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:27:36,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:27:36,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-20 16:27:36,678 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:27:36,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:27:36,679 INFO L85 PathProgramCache]: Analyzing trace with hash 35814859, now seen corresponding path program 18 times [2024-06-20 16:27:36,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:27:36,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517768290] [2024-06-20 16:27:36,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:27:36,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:27:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:27:37,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:27:37,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:27:37,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517768290] [2024-06-20 16:27:37,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517768290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:27:37,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:27:37,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:27:37,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745412370] [2024-06-20 16:27:37,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:27:37,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:27:37,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:27:37,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:27:37,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:27:37,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:27:37,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 514 transitions, 6456 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:27:37,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:27:37,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:27:37,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:27:39,104 INFO L124 PetriNetUnfolderBase]: 3352/5318 cut-off events. [2024-06-20 16:27:39,105 INFO L125 PetriNetUnfolderBase]: For 1499851/1499856 co-relation queries the response was YES. [2024-06-20 16:27:39,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61438 conditions, 5318 events. 3352/5318 cut-off events. For 1499851/1499856 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 31798 event pairs, 675 based on Foata normal form. 4/5314 useless extension candidates. Maximal degree in co-relation 61256. Up to 4049 conditions per place. [2024-06-20 16:27:39,184 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 311 selfloop transitions, 219 changer transitions 0/535 dead transitions. [2024-06-20 16:27:39,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 535 transitions, 7993 flow [2024-06-20 16:27:39,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:27:39,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:27:39,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-20 16:27:39,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-20 16:27:39,185 INFO L175 Difference]: Start difference. First operand has 386 places, 514 transitions, 6456 flow. Second operand 9 states and 168 transitions. [2024-06-20 16:27:39,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 535 transitions, 7993 flow [2024-06-20 16:27:45,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 535 transitions, 7347 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 16:27:45,538 INFO L231 Difference]: Finished difference. Result has 384 places, 518 transitions, 6363 flow [2024-06-20 16:27:45,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5826, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6363, PETRI_PLACES=384, PETRI_TRANSITIONS=518} [2024-06-20 16:27:45,539 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 341 predicate places. [2024-06-20 16:27:45,539 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 518 transitions, 6363 flow [2024-06-20 16:27:45,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:27:45,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:27:45,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:27:45,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-20 16:27:45,539 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:27:45,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:27:45,539 INFO L85 PathProgramCache]: Analyzing trace with hash -473038029, now seen corresponding path program 19 times [2024-06-20 16:27:45,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:27:45,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920621095] [2024-06-20 16:27:45,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:27:45,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:27:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:27:46,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:27:46,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:27:46,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920621095] [2024-06-20 16:27:46,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920621095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:27:46,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:27:46,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:27:46,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624863719] [2024-06-20 16:27:46,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:27:46,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:27:46,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:27:46,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:27:46,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:27:46,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:27:46,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 518 transitions, 6363 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:27:46,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:27:46,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:27:46,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:27:47,759 INFO L124 PetriNetUnfolderBase]: 3340/5302 cut-off events. [2024-06-20 16:27:47,759 INFO L125 PetriNetUnfolderBase]: For 1499409/1499414 co-relation queries the response was YES. [2024-06-20 16:27:47,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60749 conditions, 5302 events. 3340/5302 cut-off events. For 1499409/1499414 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 31744 event pairs, 640 based on Foata normal form. 6/5300 useless extension candidates. Maximal degree in co-relation 60566. Up to 4041 conditions per place. [2024-06-20 16:27:47,847 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 323 selfloop transitions, 207 changer transitions 0/535 dead transitions. [2024-06-20 16:27:47,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 535 transitions, 7793 flow [2024-06-20 16:27:47,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:27:47,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:27:47,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-20 16:27:47,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-20 16:27:47,848 INFO L175 Difference]: Start difference. First operand has 384 places, 518 transitions, 6363 flow. Second operand 9 states and 168 transitions. [2024-06-20 16:27:47,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 535 transitions, 7793 flow [2024-06-20 16:27:54,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 535 transitions, 7313 flow, removed 66 selfloop flow, removed 5 redundant places. [2024-06-20 16:27:54,056 INFO L231 Difference]: Finished difference. Result has 388 places, 518 transitions, 6305 flow [2024-06-20 16:27:54,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5883, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6305, PETRI_PLACES=388, PETRI_TRANSITIONS=518} [2024-06-20 16:27:54,056 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 345 predicate places. [2024-06-20 16:27:54,056 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 518 transitions, 6305 flow [2024-06-20 16:27:54,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:27:54,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:27:54,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:27:54,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-20 16:27:54,057 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:27:54,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:27:54,058 INFO L85 PathProgramCache]: Analyzing trace with hash -467324109, now seen corresponding path program 20 times [2024-06-20 16:27:54,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:27:54,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780920028] [2024-06-20 16:27:54,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:27:54,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:27:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:27:54,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:27:54,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:27:54,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780920028] [2024-06-20 16:27:54,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780920028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:27:54,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:27:54,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:27:54,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325362361] [2024-06-20 16:27:54,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:27:54,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:27:54,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:27:54,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:27:54,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:27:55,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:27:55,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 518 transitions, 6305 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:27:55,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:27:55,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:27:55,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:27:56,347 INFO L124 PetriNetUnfolderBase]: 3330/5284 cut-off events. [2024-06-20 16:27:56,347 INFO L125 PetriNetUnfolderBase]: For 1479548/1479553 co-relation queries the response was YES. [2024-06-20 16:27:56,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60370 conditions, 5284 events. 3330/5284 cut-off events. For 1479548/1479553 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 31552 event pairs, 640 based on Foata normal form. 4/5280 useless extension candidates. Maximal degree in co-relation 60186. Up to 4033 conditions per place. [2024-06-20 16:27:56,429 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 309 selfloop transitions, 220 changer transitions 0/534 dead transitions. [2024-06-20 16:27:56,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 534 transitions, 7459 flow [2024-06-20 16:27:56,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:27:56,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:27:56,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-20 16:27:56,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43915343915343913 [2024-06-20 16:27:56,431 INFO L175 Difference]: Start difference. First operand has 388 places, 518 transitions, 6305 flow. Second operand 9 states and 166 transitions. [2024-06-20 16:27:56,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 534 transitions, 7459 flow [2024-06-20 16:28:03,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 534 transitions, 6994 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-20 16:28:03,637 INFO L231 Difference]: Finished difference. Result has 390 places, 518 transitions, 6286 flow [2024-06-20 16:28:03,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5840, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6286, PETRI_PLACES=390, PETRI_TRANSITIONS=518} [2024-06-20 16:28:03,637 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 347 predicate places. [2024-06-20 16:28:03,637 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 518 transitions, 6286 flow [2024-06-20 16:28:03,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:28:03,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:28:03,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:28:03,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-20 16:28:03,638 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:28:03,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:28:03,638 INFO L85 PathProgramCache]: Analyzing trace with hash -901524958, now seen corresponding path program 7 times [2024-06-20 16:28:03,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:28:03,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636473211] [2024-06-20 16:28:03,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:28:03,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:28:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:28:04,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:28:04,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:28:04,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636473211] [2024-06-20 16:28:04,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636473211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:28:04,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:28:04,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:28:04,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307953457] [2024-06-20 16:28:04,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:28:04,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:28:04,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:28:04,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:28:04,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:28:04,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:28:04,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 518 transitions, 6286 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:28:04,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:28:04,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:28:04,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:28:05,999 INFO L124 PetriNetUnfolderBase]: 3374/5388 cut-off events. [2024-06-20 16:28:05,999 INFO L125 PetriNetUnfolderBase]: For 1599605/1599610 co-relation queries the response was YES. [2024-06-20 16:28:06,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61439 conditions, 5388 events. 3374/5388 cut-off events. For 1599605/1599610 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 32732 event pairs, 674 based on Foata normal form. 14/5394 useless extension candidates. Maximal degree in co-relation 61254. Up to 4508 conditions per place. [2024-06-20 16:28:06,086 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 417 selfloop transitions, 118 changer transitions 0/540 dead transitions. [2024-06-20 16:28:06,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 540 transitions, 7678 flow [2024-06-20 16:28:06,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:28:06,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:28:06,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-20 16:28:06,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-20 16:28:06,087 INFO L175 Difference]: Start difference. First operand has 390 places, 518 transitions, 6286 flow. Second operand 9 states and 167 transitions. [2024-06-20 16:28:06,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 540 transitions, 7678 flow [2024-06-20 16:28:13,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 540 transitions, 7157 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-20 16:28:13,151 INFO L231 Difference]: Finished difference. Result has 389 places, 520 transitions, 6131 flow [2024-06-20 16:28:13,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5765, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6131, PETRI_PLACES=389, PETRI_TRANSITIONS=520} [2024-06-20 16:28:13,151 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 346 predicate places. [2024-06-20 16:28:13,151 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 520 transitions, 6131 flow [2024-06-20 16:28:13,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:28:13,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:28:13,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:28:13,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-20 16:28:13,152 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:28:13,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:28:13,152 INFO L85 PathProgramCache]: Analyzing trace with hash 136594242, now seen corresponding path program 8 times [2024-06-20 16:28:13,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:28:13,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533569742] [2024-06-20 16:28:13,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:28:13,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:28:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:28:14,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:28:14,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:28:14,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533569742] [2024-06-20 16:28:14,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533569742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:28:14,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:28:14,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:28:14,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578579554] [2024-06-20 16:28:14,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:28:14,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:28:14,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:28:14,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:28:14,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:28:14,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:28:14,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 520 transitions, 6131 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:28:14,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:28:14,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:28:14,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:28:15,647 INFO L124 PetriNetUnfolderBase]: 3418/5440 cut-off events. [2024-06-20 16:28:15,647 INFO L125 PetriNetUnfolderBase]: For 1628104/1628109 co-relation queries the response was YES. [2024-06-20 16:28:15,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62204 conditions, 5440 events. 3418/5440 cut-off events. For 1628104/1628109 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 32914 event pairs, 700 based on Foata normal form. 14/5446 useless extension candidates. Maximal degree in co-relation 62018. Up to 4576 conditions per place. [2024-06-20 16:28:15,732 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 417 selfloop transitions, 120 changer transitions 0/542 dead transitions. [2024-06-20 16:28:15,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 542 transitions, 7531 flow [2024-06-20 16:28:15,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:28:15,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:28:15,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-20 16:28:15,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-20 16:28:15,733 INFO L175 Difference]: Start difference. First operand has 389 places, 520 transitions, 6131 flow. Second operand 9 states and 168 transitions. [2024-06-20 16:28:15,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 542 transitions, 7531 flow [2024-06-20 16:28:21,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 542 transitions, 7213 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-20 16:28:21,921 INFO L231 Difference]: Finished difference. Result has 391 places, 522 transitions, 6187 flow [2024-06-20 16:28:21,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5813, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6187, PETRI_PLACES=391, PETRI_TRANSITIONS=522} [2024-06-20 16:28:21,921 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 348 predicate places. [2024-06-20 16:28:21,921 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 522 transitions, 6187 flow [2024-06-20 16:28:21,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:28:21,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:28:21,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:28:21,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-20 16:28:21,922 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:28:21,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:28:21,922 INFO L85 PathProgramCache]: Analyzing trace with hash -401039680, now seen corresponding path program 9 times [2024-06-20 16:28:21,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:28:21,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385457306] [2024-06-20 16:28:21,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:28:21,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:28:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:28:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:28:22,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:28:22,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385457306] [2024-06-20 16:28:22,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385457306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:28:22,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:28:22,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:28:22,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200927484] [2024-06-20 16:28:22,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:28:22,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:28:22,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:28:22,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:28:22,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:28:22,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:28:22,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 522 transitions, 6187 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:28:22,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:28:22,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:28:22,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:28:24,337 INFO L124 PetriNetUnfolderBase]: 3462/5514 cut-off events. [2024-06-20 16:28:24,338 INFO L125 PetriNetUnfolderBase]: For 1652319/1652324 co-relation queries the response was YES. [2024-06-20 16:28:24,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63137 conditions, 5514 events. 3462/5514 cut-off events. For 1652319/1652324 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 33530 event pairs, 702 based on Foata normal form. 14/5520 useless extension candidates. Maximal degree in co-relation 62950. Up to 4644 conditions per place. [2024-06-20 16:28:24,423 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 427 selfloop transitions, 112 changer transitions 0/544 dead transitions. [2024-06-20 16:28:24,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 544 transitions, 7595 flow [2024-06-20 16:28:24,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:28:24,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:28:24,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-20 16:28:24,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-20 16:28:24,424 INFO L175 Difference]: Start difference. First operand has 391 places, 522 transitions, 6187 flow. Second operand 9 states and 168 transitions. [2024-06-20 16:28:24,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 544 transitions, 7595 flow [2024-06-20 16:28:31,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 544 transitions, 7269 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-20 16:28:31,672 INFO L231 Difference]: Finished difference. Result has 393 places, 524 transitions, 6223 flow [2024-06-20 16:28:31,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5861, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6223, PETRI_PLACES=393, PETRI_TRANSITIONS=524} [2024-06-20 16:28:31,673 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 350 predicate places. [2024-06-20 16:28:31,673 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 524 transitions, 6223 flow [2024-06-20 16:28:31,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:28:31,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:28:31,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:28:31,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-20 16:28:31,673 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:28:31,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:28:31,673 INFO L85 PathProgramCache]: Analyzing trace with hash -412090870, now seen corresponding path program 10 times [2024-06-20 16:28:31,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:28:31,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045807460] [2024-06-20 16:28:31,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:28:31,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:28:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:28:32,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:28:32,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:28:32,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045807460] [2024-06-20 16:28:32,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045807460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:28:32,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:28:32,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:28:32,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417380468] [2024-06-20 16:28:32,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:28:32,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:28:32,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:28:32,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:28:32,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:28:32,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:28:32,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 524 transitions, 6223 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:28:32,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:28:32,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:28:32,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:28:34,110 INFO L124 PetriNetUnfolderBase]: 3493/5553 cut-off events. [2024-06-20 16:28:34,110 INFO L125 PetriNetUnfolderBase]: For 1644917/1644922 co-relation queries the response was YES. [2024-06-20 16:28:34,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63344 conditions, 5553 events. 3493/5553 cut-off events. For 1644917/1644922 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 33630 event pairs, 700 based on Foata normal form. 14/5559 useless extension candidates. Maximal degree in co-relation 63156. Up to 4485 conditions per place. [2024-06-20 16:28:34,196 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 418 selfloop transitions, 127 changer transitions 0/550 dead transitions. [2024-06-20 16:28:34,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 550 transitions, 7753 flow [2024-06-20 16:28:34,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:28:34,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:28:34,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-20 16:28:34,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-20 16:28:34,197 INFO L175 Difference]: Start difference. First operand has 393 places, 524 transitions, 6223 flow. Second operand 9 states and 171 transitions. [2024-06-20 16:28:34,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 550 transitions, 7753 flow [2024-06-20 16:28:41,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 550 transitions, 7439 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-20 16:28:41,132 INFO L231 Difference]: Finished difference. Result has 395 places, 526 transitions, 6304 flow [2024-06-20 16:28:41,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5909, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6304, PETRI_PLACES=395, PETRI_TRANSITIONS=526} [2024-06-20 16:28:41,133 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 352 predicate places. [2024-06-20 16:28:41,133 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 526 transitions, 6304 flow [2024-06-20 16:28:41,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:28:41,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:28:41,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:28:41,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-20 16:28:41,134 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:28:41,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:28:41,134 INFO L85 PathProgramCache]: Analyzing trace with hash -401027776, now seen corresponding path program 6 times [2024-06-20 16:28:41,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:28:41,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559455753] [2024-06-20 16:28:41,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:28:41,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:28:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:28:42,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:28:42,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:28:42,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559455753] [2024-06-20 16:28:42,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559455753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:28:42,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:28:42,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:28:42,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208782675] [2024-06-20 16:28:42,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:28:42,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:28:42,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:28:42,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:28:42,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:28:42,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:28:42,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 526 transitions, 6304 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:28:42,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:28:42,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:28:42,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:28:43,671 INFO L124 PetriNetUnfolderBase]: 3588/5648 cut-off events. [2024-06-20 16:28:43,671 INFO L125 PetriNetUnfolderBase]: For 1713041/1713046 co-relation queries the response was YES. [2024-06-20 16:28:43,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66963 conditions, 5648 events. 3588/5648 cut-off events. For 1713041/1713046 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 33732 event pairs, 741 based on Foata normal form. 5/5645 useless extension candidates. Maximal degree in co-relation 66774. Up to 4024 conditions per place. [2024-06-20 16:28:43,762 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 354 selfloop transitions, 207 changer transitions 0/566 dead transitions. [2024-06-20 16:28:43,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 566 transitions, 9642 flow [2024-06-20 16:28:43,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:28:43,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:28:43,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-20 16:28:43,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2024-06-20 16:28:43,763 INFO L175 Difference]: Start difference. First operand has 395 places, 526 transitions, 6304 flow. Second operand 10 states and 194 transitions. [2024-06-20 16:28:43,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 566 transitions, 9642 flow [2024-06-20 16:28:52,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 566 transitions, 9293 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-20 16:28:52,163 INFO L231 Difference]: Finished difference. Result has 400 places, 541 transitions, 7177 flow [2024-06-20 16:28:52,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5955, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7177, PETRI_PLACES=400, PETRI_TRANSITIONS=541} [2024-06-20 16:28:52,163 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 357 predicate places. [2024-06-20 16:28:52,164 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 541 transitions, 7177 flow [2024-06-20 16:28:52,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:28:52,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:28:52,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:28:52,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-20 16:28:52,164 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:28:52,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:28:52,165 INFO L85 PathProgramCache]: Analyzing trace with hash -400652986, now seen corresponding path program 7 times [2024-06-20 16:28:52,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:28:52,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149113622] [2024-06-20 16:28:52,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:28:52,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:28:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:28:53,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:28:53,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:28:53,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149113622] [2024-06-20 16:28:53,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149113622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:28:53,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:28:53,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:28:53,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91899761] [2024-06-20 16:28:53,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:28:53,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:28:53,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:28:53,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:28:53,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:28:53,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:28:53,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 541 transitions, 7177 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:28:53,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:28:53,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:28:53,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:28:54,777 INFO L124 PetriNetUnfolderBase]: 3603/5675 cut-off events. [2024-06-20 16:28:54,777 INFO L125 PetriNetUnfolderBase]: For 1748065/1748070 co-relation queries the response was YES. [2024-06-20 16:28:54,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68174 conditions, 5675 events. 3603/5675 cut-off events. For 1748065/1748070 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 33982 event pairs, 735 based on Foata normal form. 5/5672 useless extension candidates. Maximal degree in co-relation 67982. Up to 4038 conditions per place. [2024-06-20 16:28:54,870 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 356 selfloop transitions, 209 changer transitions 0/570 dead transitions. [2024-06-20 16:28:54,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 570 transitions, 10046 flow [2024-06-20 16:28:54,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:28:54,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:28:54,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-20 16:28:54,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595238095238095 [2024-06-20 16:28:54,872 INFO L175 Difference]: Start difference. First operand has 400 places, 541 transitions, 7177 flow. Second operand 10 states and 193 transitions. [2024-06-20 16:28:54,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 570 transitions, 10046 flow [2024-06-20 16:29:03,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 570 transitions, 9610 flow, removed 157 selfloop flow, removed 4 redundant places. [2024-06-20 16:29:03,071 INFO L231 Difference]: Finished difference. Result has 406 places, 545 transitions, 7393 flow [2024-06-20 16:29:03,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6779, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7393, PETRI_PLACES=406, PETRI_TRANSITIONS=545} [2024-06-20 16:29:03,071 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 363 predicate places. [2024-06-20 16:29:03,071 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 545 transitions, 7393 flow [2024-06-20 16:29:03,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:29:03,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:29:03,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:29:03,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-20 16:29:03,072 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:29:03,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:29:03,072 INFO L85 PathProgramCache]: Analyzing trace with hash -411752536, now seen corresponding path program 8 times [2024-06-20 16:29:03,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:29:03,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360004751] [2024-06-20 16:29:03,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:29:03,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:29:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:29:04,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:29:04,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:29:04,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360004751] [2024-06-20 16:29:04,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360004751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:29:04,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:29:04,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:29:04,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850866488] [2024-06-20 16:29:04,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:29:04,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:29:04,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:29:04,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:29:04,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:29:04,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:29:04,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 545 transitions, 7393 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:29:04,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:29:04,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:29:04,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:29:05,588 INFO L124 PetriNetUnfolderBase]: 3626/5710 cut-off events. [2024-06-20 16:29:05,588 INFO L125 PetriNetUnfolderBase]: For 1770175/1770180 co-relation queries the response was YES. [2024-06-20 16:29:05,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69079 conditions, 5710 events. 3626/5710 cut-off events. For 1770175/1770180 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 34210 event pairs, 752 based on Foata normal form. 5/5707 useless extension candidates. Maximal degree in co-relation 68885. Up to 4061 conditions per place. [2024-06-20 16:29:05,682 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 323 selfloop transitions, 247 changer transitions 0/575 dead transitions. [2024-06-20 16:29:05,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 575 transitions, 10004 flow [2024-06-20 16:29:05,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:29:05,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:29:05,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-20 16:29:05,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45476190476190476 [2024-06-20 16:29:05,683 INFO L175 Difference]: Start difference. First operand has 406 places, 545 transitions, 7393 flow. Second operand 10 states and 191 transitions. [2024-06-20 16:29:05,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 575 transitions, 10004 flow [2024-06-20 16:29:13,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 575 transitions, 9490 flow, removed 91 selfloop flow, removed 6 redundant places. [2024-06-20 16:29:13,214 INFO L231 Difference]: Finished difference. Result has 411 places, 554 transitions, 7991 flow [2024-06-20 16:29:13,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6889, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7991, PETRI_PLACES=411, PETRI_TRANSITIONS=554} [2024-06-20 16:29:13,214 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 368 predicate places. [2024-06-20 16:29:13,214 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 554 transitions, 7991 flow [2024-06-20 16:29:13,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:29:13,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:29:13,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:29:13,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-20 16:29:13,215 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:29:13,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:29:13,215 INFO L85 PathProgramCache]: Analyzing trace with hash -458296444, now seen corresponding path program 9 times [2024-06-20 16:29:13,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:29:13,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065963217] [2024-06-20 16:29:13,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:29:13,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:29:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:29:14,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:29:14,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:29:14,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065963217] [2024-06-20 16:29:14,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065963217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:29:14,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:29:14,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:29:14,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467595452] [2024-06-20 16:29:14,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:29:14,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:29:14,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:29:14,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:29:14,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:29:14,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:29:14,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 554 transitions, 7991 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:29:14,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:29:14,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:29:14,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:29:15,886 INFO L124 PetriNetUnfolderBase]: 3677/5767 cut-off events. [2024-06-20 16:29:15,887 INFO L125 PetriNetUnfolderBase]: For 1830534/1830537 co-relation queries the response was YES. [2024-06-20 16:29:15,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71298 conditions, 5767 events. 3677/5767 cut-off events. For 1830534/1830537 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 34425 event pairs, 787 based on Foata normal form. 5/5769 useless extension candidates. Maximal degree in co-relation 71102. Up to 5308 conditions per place. [2024-06-20 16:29:15,985 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 508 selfloop transitions, 68 changer transitions 0/581 dead transitions. [2024-06-20 16:29:15,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 581 transitions, 9948 flow [2024-06-20 16:29:15,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:29:15,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:29:15,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-20 16:29:15,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-06-20 16:29:15,986 INFO L175 Difference]: Start difference. First operand has 411 places, 554 transitions, 7991 flow. Second operand 10 states and 176 transitions. [2024-06-20 16:29:15,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 581 transitions, 9948 flow [2024-06-20 16:29:23,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 581 transitions, 9549 flow, removed 136 selfloop flow, removed 5 redundant places. [2024-06-20 16:29:23,412 INFO L231 Difference]: Finished difference. Result has 417 places, 562 transitions, 8173 flow [2024-06-20 16:29:23,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7626, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8173, PETRI_PLACES=417, PETRI_TRANSITIONS=562} [2024-06-20 16:29:23,412 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 374 predicate places. [2024-06-20 16:29:23,412 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 562 transitions, 8173 flow [2024-06-20 16:29:23,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:29:23,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:29:23,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:29:23,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-20 16:29:23,413 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:29:23,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:29:23,413 INFO L85 PathProgramCache]: Analyzing trace with hash -400639966, now seen corresponding path program 10 times [2024-06-20 16:29:23,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:29:23,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839023341] [2024-06-20 16:29:23,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:29:23,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:29:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:29:24,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:29:24,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:29:24,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839023341] [2024-06-20 16:29:24,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839023341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:29:24,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:29:24,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:29:24,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410022770] [2024-06-20 16:29:24,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:29:24,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:29:24,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:29:24,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:29:24,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:29:24,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:29:24,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 562 transitions, 8173 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:29:24,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:29:24,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:29:24,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:29:25,980 INFO L124 PetriNetUnfolderBase]: 3672/5786 cut-off events. [2024-06-20 16:29:25,981 INFO L125 PetriNetUnfolderBase]: For 1814482/1814487 co-relation queries the response was YES. [2024-06-20 16:29:26,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70539 conditions, 5786 events. 3672/5786 cut-off events. For 1814482/1814487 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 34730 event pairs, 739 based on Foata normal form. 5/5783 useless extension candidates. Maximal degree in co-relation 70340. Up to 4102 conditions per place. [2024-06-20 16:29:26,084 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 357 selfloop transitions, 221 changer transitions 0/583 dead transitions. [2024-06-20 16:29:26,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 583 transitions, 10323 flow [2024-06-20 16:29:26,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:29:26,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:29:26,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-20 16:29:26,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45476190476190476 [2024-06-20 16:29:26,085 INFO L175 Difference]: Start difference. First operand has 417 places, 562 transitions, 8173 flow. Second operand 10 states and 191 transitions. [2024-06-20 16:29:26,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 583 transitions, 10323 flow [2024-06-20 16:29:33,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 583 transitions, 9388 flow, removed 192 selfloop flow, removed 10 redundant places. [2024-06-20 16:29:33,760 INFO L231 Difference]: Finished difference. Result has 417 places, 562 transitions, 7688 flow [2024-06-20 16:29:33,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7238, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7688, PETRI_PLACES=417, PETRI_TRANSITIONS=562} [2024-06-20 16:29:33,760 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 374 predicate places. [2024-06-20 16:29:33,760 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 562 transitions, 7688 flow [2024-06-20 16:29:33,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:29:33,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:29:33,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:29:33,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-20 16:29:33,761 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:29:33,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:29:33,761 INFO L85 PathProgramCache]: Analyzing trace with hash -901125244, now seen corresponding path program 11 times [2024-06-20 16:29:33,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:29:33,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882640146] [2024-06-20 16:29:33,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:29:33,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:29:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:29:34,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:29:34,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:29:34,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882640146] [2024-06-20 16:29:34,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882640146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:29:34,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:29:34,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:29:34,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028893073] [2024-06-20 16:29:34,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:29:34,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:29:34,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:29:34,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:29:34,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:29:34,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:29:34,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 562 transitions, 7688 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:29:34,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:29:34,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:29:34,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:29:36,341 INFO L124 PetriNetUnfolderBase]: 3747/5914 cut-off events. [2024-06-20 16:29:36,342 INFO L125 PetriNetUnfolderBase]: For 1923243/1923248 co-relation queries the response was YES. [2024-06-20 16:29:36,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72695 conditions, 5914 events. 3747/5914 cut-off events. For 1923243/1923248 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 35784 event pairs, 733 based on Foata normal form. 5/5911 useless extension candidates. Maximal degree in co-relation 72497. Up to 4166 conditions per place. [2024-06-20 16:29:36,446 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 356 selfloop transitions, 234 changer transitions 0/595 dead transitions. [2024-06-20 16:29:36,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 595 transitions, 10487 flow [2024-06-20 16:29:36,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:29:36,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:29:36,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-20 16:29:36,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-20 16:29:36,447 INFO L175 Difference]: Start difference. First operand has 417 places, 562 transitions, 7688 flow. Second operand 10 states and 190 transitions. [2024-06-20 16:29:36,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 595 transitions, 10487 flow [2024-06-20 16:29:44,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 595 transitions, 9965 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-20 16:29:44,130 INFO L231 Difference]: Finished difference. Result has 418 places, 573 transitions, 8194 flow [2024-06-20 16:29:44,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7184, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8194, PETRI_PLACES=418, PETRI_TRANSITIONS=573} [2024-06-20 16:29:44,131 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 375 predicate places. [2024-06-20 16:29:44,131 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 573 transitions, 8194 flow [2024-06-20 16:29:44,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:29:44,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:29:44,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:29:44,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-20 16:29:44,132 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:29:44,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:29:44,132 INFO L85 PathProgramCache]: Analyzing trace with hash -901138264, now seen corresponding path program 12 times [2024-06-20 16:29:44,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:29:44,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807491115] [2024-06-20 16:29:44,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:29:44,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:29:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:29:45,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:29:45,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:29:45,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807491115] [2024-06-20 16:29:45,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807491115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:29:45,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:29:45,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:29:45,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054328726] [2024-06-20 16:29:45,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:29:45,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:29:45,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:29:45,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:29:45,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:29:45,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:29:45,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 573 transitions, 8194 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:29:45,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:29:45,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:29:45,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:29:46,656 INFO L124 PetriNetUnfolderBase]: 3762/5937 cut-off events. [2024-06-20 16:29:46,656 INFO L125 PetriNetUnfolderBase]: For 1950300/1950305 co-relation queries the response was YES. [2024-06-20 16:29:46,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73165 conditions, 5937 events. 3762/5937 cut-off events. For 1950300/1950305 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 35937 event pairs, 734 based on Foata normal form. 5/5934 useless extension candidates. Maximal degree in co-relation 72967. Up to 4180 conditions per place. [2024-06-20 16:29:46,762 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 356 selfloop transitions, 238 changer transitions 0/599 dead transitions. [2024-06-20 16:29:46,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 599 transitions, 10700 flow [2024-06-20 16:29:46,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:29:46,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:29:46,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-20 16:29:46,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45476190476190476 [2024-06-20 16:29:46,763 INFO L175 Difference]: Start difference. First operand has 418 places, 573 transitions, 8194 flow. Second operand 10 states and 191 transitions. [2024-06-20 16:29:46,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 599 transitions, 10700 flow [2024-06-20 16:29:55,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 599 transitions, 9902 flow, removed 117 selfloop flow, removed 8 redundant places. [2024-06-20 16:29:55,158 INFO L231 Difference]: Finished difference. Result has 420 places, 577 transitions, 8102 flow [2024-06-20 16:29:55,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7413, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8102, PETRI_PLACES=420, PETRI_TRANSITIONS=577} [2024-06-20 16:29:55,159 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 377 predicate places. [2024-06-20 16:29:55,159 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 577 transitions, 8102 flow [2024-06-20 16:29:55,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:29:55,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:29:55,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:29:55,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-20 16:29:55,160 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:29:55,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:29:55,160 INFO L85 PathProgramCache]: Analyzing trace with hash -473028109, now seen corresponding path program 2 times [2024-06-20 16:29:55,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:29:55,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162890669] [2024-06-20 16:29:55,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:29:55,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:29:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:29:56,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:29:56,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:29:56,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162890669] [2024-06-20 16:29:56,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162890669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:29:56,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:29:56,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:29:56,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601772402] [2024-06-20 16:29:56,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:29:56,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:29:56,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:29:56,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:29:56,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:29:56,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:29:56,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 577 transitions, 8102 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:29:56,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:29:56,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:29:56,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:29:58,086 INFO L124 PetriNetUnfolderBase]: 3767/5892 cut-off events. [2024-06-20 16:29:58,086 INFO L125 PetriNetUnfolderBase]: For 1941660/1941668 co-relation queries the response was YES. [2024-06-20 16:29:58,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72937 conditions, 5892 events. 3767/5892 cut-off events. For 1941660/1941668 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 35048 event pairs, 835 based on Foata normal form. 7/5896 useless extension candidates. Maximal degree in co-relation 72738. Up to 5532 conditions per place. [2024-06-20 16:29:58,196 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 530 selfloop transitions, 58 changer transitions 0/593 dead transitions. [2024-06-20 16:29:58,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 593 transitions, 9464 flow [2024-06-20 16:29:58,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:29:58,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:29:58,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-20 16:29:58,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3976190476190476 [2024-06-20 16:29:58,197 INFO L175 Difference]: Start difference. First operand has 420 places, 577 transitions, 8102 flow. Second operand 10 states and 167 transitions. [2024-06-20 16:29:58,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 593 transitions, 9464 flow [2024-06-20 16:30:05,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 593 transitions, 8897 flow, removed 89 selfloop flow, removed 6 redundant places. [2024-06-20 16:30:05,810 INFO L231 Difference]: Finished difference. Result has 424 places, 580 transitions, 7815 flow [2024-06-20 16:30:05,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7535, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7815, PETRI_PLACES=424, PETRI_TRANSITIONS=580} [2024-06-20 16:30:05,811 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 381 predicate places. [2024-06-20 16:30:05,812 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 580 transitions, 7815 flow [2024-06-20 16:30:05,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:05,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:05,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:05,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-20 16:30:05,812 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:30:05,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:05,813 INFO L85 PathProgramCache]: Analyzing trace with hash -400639501, now seen corresponding path program 3 times [2024-06-20 16:30:05,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:05,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691301337] [2024-06-20 16:30:05,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:05,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:07,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:07,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691301337] [2024-06-20 16:30:07,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691301337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:07,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:07,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:30:07,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141689426] [2024-06-20 16:30:07,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:07,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:30:07,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:07,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:30:07,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:30:07,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:30:07,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 580 transitions, 7815 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:07,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:07,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:30:07,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:08,740 INFO L124 PetriNetUnfolderBase]: 3772/5897 cut-off events. [2024-06-20 16:30:08,740 INFO L125 PetriNetUnfolderBase]: For 1961212/1961220 co-relation queries the response was YES. [2024-06-20 16:30:08,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72427 conditions, 5897 events. 3772/5897 cut-off events. For 1961212/1961220 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 35127 event pairs, 837 based on Foata normal form. 7/5901 useless extension candidates. Maximal degree in co-relation 72227. Up to 5539 conditions per place. [2024-06-20 16:30:08,846 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 536 selfloop transitions, 55 changer transitions 0/596 dead transitions. [2024-06-20 16:30:08,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 596 transitions, 9189 flow [2024-06-20 16:30:08,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:30:08,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:30:08,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-20 16:30:08,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4023809523809524 [2024-06-20 16:30:08,847 INFO L175 Difference]: Start difference. First operand has 424 places, 580 transitions, 7815 flow. Second operand 10 states and 169 transitions. [2024-06-20 16:30:08,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 596 transitions, 9189 flow [2024-06-20 16:30:17,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 596 transitions, 8931 flow, removed 73 selfloop flow, removed 8 redundant places. [2024-06-20 16:30:17,895 INFO L231 Difference]: Finished difference. Result has 426 places, 583 transitions, 7837 flow [2024-06-20 16:30:17,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7557, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7837, PETRI_PLACES=426, PETRI_TRANSITIONS=583} [2024-06-20 16:30:17,896 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 383 predicate places. [2024-06-20 16:30:17,896 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 583 transitions, 7837 flow [2024-06-20 16:30:17,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:17,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:17,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:17,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-20 16:30:17,897 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:30:17,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:17,898 INFO L85 PathProgramCache]: Analyzing trace with hash -901513054, now seen corresponding path program 13 times [2024-06-20 16:30:17,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:17,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762848016] [2024-06-20 16:30:17,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:17,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:18,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:18,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:18,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762848016] [2024-06-20 16:30:18,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762848016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:18,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:18,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:30:18,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090487608] [2024-06-20 16:30:18,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:18,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:30:18,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:18,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:30:18,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:30:18,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:30:18,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 583 transitions, 7837 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:18,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:18,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:30:18,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:20,550 INFO L124 PetriNetUnfolderBase]: 3763/5942 cut-off events. [2024-06-20 16:30:20,550 INFO L125 PetriNetUnfolderBase]: For 1980022/1980027 co-relation queries the response was YES. [2024-06-20 16:30:20,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72062 conditions, 5942 events. 3763/5942 cut-off events. For 1980022/1980027 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 36008 event pairs, 734 based on Foata normal form. 5/5939 useless extension candidates. Maximal degree in co-relation 71861. Up to 4187 conditions per place. [2024-06-20 16:30:20,655 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 346 selfloop transitions, 254 changer transitions 0/605 dead transitions. [2024-06-20 16:30:20,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 605 transitions, 10154 flow [2024-06-20 16:30:20,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:30:20,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:30:20,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-20 16:30:20,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-20 16:30:20,656 INFO L175 Difference]: Start difference. First operand has 426 places, 583 transitions, 7837 flow. Second operand 10 states and 190 transitions. [2024-06-20 16:30:20,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 605 transitions, 10154 flow [2024-06-20 16:30:29,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 605 transitions, 9896 flow, removed 76 selfloop flow, removed 8 redundant places. [2024-06-20 16:30:29,493 INFO L231 Difference]: Finished difference. Result has 428 places, 584 transitions, 8187 flow [2024-06-20 16:30:29,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7579, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8187, PETRI_PLACES=428, PETRI_TRANSITIONS=584} [2024-06-20 16:30:29,494 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 385 predicate places. [2024-06-20 16:30:29,494 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 584 transitions, 8187 flow [2024-06-20 16:30:29,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:29,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:29,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:29,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-20 16:30:29,494 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:30:29,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:29,494 INFO L85 PathProgramCache]: Analyzing trace with hash -901124779, now seen corresponding path program 4 times [2024-06-20 16:30:29,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:29,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112780961] [2024-06-20 16:30:29,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:29,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:30,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:30,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:30,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112780961] [2024-06-20 16:30:30,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112780961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:30,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:30,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:30:30,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641910614] [2024-06-20 16:30:30,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:30,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:30:30,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:30,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:30:30,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:30:30,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:30:30,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 584 transitions, 8187 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:30,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:30,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:30:30,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:32,279 INFO L124 PetriNetUnfolderBase]: 3768/5892 cut-off events. [2024-06-20 16:30:32,279 INFO L125 PetriNetUnfolderBase]: For 1980327/1980335 co-relation queries the response was YES. [2024-06-20 16:30:32,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73117 conditions, 5892 events. 3768/5892 cut-off events. For 1980327/1980335 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 35084 event pairs, 835 based on Foata normal form. 7/5896 useless extension candidates. Maximal degree in co-relation 72915. Up to 5534 conditions per place. [2024-06-20 16:30:32,384 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 539 selfloop transitions, 56 changer transitions 0/600 dead transitions. [2024-06-20 16:30:32,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 600 transitions, 9575 flow [2024-06-20 16:30:32,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:30:32,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:30:32,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-20 16:30:32,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 16:30:32,385 INFO L175 Difference]: Start difference. First operand has 428 places, 584 transitions, 8187 flow. Second operand 10 states and 168 transitions. [2024-06-20 16:30:32,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 600 transitions, 9575 flow [2024-06-20 16:30:42,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 600 transitions, 8888 flow, removed 92 selfloop flow, removed 8 redundant places. [2024-06-20 16:30:42,386 INFO L231 Difference]: Finished difference. Result has 430 places, 587 transitions, 7788 flow [2024-06-20 16:30:42,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7500, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7788, PETRI_PLACES=430, PETRI_TRANSITIONS=587} [2024-06-20 16:30:42,386 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 387 predicate places. [2024-06-20 16:30:42,386 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 587 transitions, 7788 flow [2024-06-20 16:30:42,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:42,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:42,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:42,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-20 16:30:42,387 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:30:42,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:42,387 INFO L85 PathProgramCache]: Analyzing trace with hash -473028574, now seen corresponding path program 14 times [2024-06-20 16:30:42,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:42,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827660736] [2024-06-20 16:30:42,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:42,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:43,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:43,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:43,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827660736] [2024-06-20 16:30:43,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827660736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:43,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:43,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:30:43,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833836719] [2024-06-20 16:30:43,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:43,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:30:43,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:43,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:30:43,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:30:43,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:30:43,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 587 transitions, 7788 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:43,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:43,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:30:43,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:44,936 INFO L124 PetriNetUnfolderBase]: 3787/5977 cut-off events. [2024-06-20 16:30:44,936 INFO L125 PetriNetUnfolderBase]: For 2022190/2022195 co-relation queries the response was YES. [2024-06-20 16:30:45,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72751 conditions, 5977 events. 3787/5977 cut-off events. For 2022190/2022195 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 36215 event pairs, 676 based on Foata normal form. 5/5974 useless extension candidates. Maximal degree in co-relation 72549. Up to 4213 conditions per place. [2024-06-20 16:30:45,040 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 353 selfloop transitions, 254 changer transitions 0/612 dead transitions. [2024-06-20 16:30:45,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 612 transitions, 10247 flow [2024-06-20 16:30:45,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:30:45,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:30:45,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-20 16:30:45,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-20 16:30:45,041 INFO L175 Difference]: Start difference. First operand has 430 places, 587 transitions, 7788 flow. Second operand 10 states and 189 transitions. [2024-06-20 16:30:45,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 612 transitions, 10247 flow [2024-06-20 16:30:55,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 612 transitions, 9977 flow, removed 81 selfloop flow, removed 8 redundant places. [2024-06-20 16:30:55,705 INFO L231 Difference]: Finished difference. Result has 432 places, 591 transitions, 8245 flow [2024-06-20 16:30:55,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7518, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8245, PETRI_PLACES=432, PETRI_TRANSITIONS=591} [2024-06-20 16:30:55,706 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 389 predicate places. [2024-06-20 16:30:55,706 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 591 transitions, 8245 flow [2024-06-20 16:30:55,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:55,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:55,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:55,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-20 16:30:55,707 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:30:55,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:55,707 INFO L85 PathProgramCache]: Analyzing trace with hash -473041594, now seen corresponding path program 15 times [2024-06-20 16:30:55,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:55,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271097790] [2024-06-20 16:30:55,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:55,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:56,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:56,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:56,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271097790] [2024-06-20 16:30:56,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271097790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:56,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:56,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:30:56,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029387426] [2024-06-20 16:30:56,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:56,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:30:56,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:56,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:30:56,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:30:56,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:30:56,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 591 transitions, 8245 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:56,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:56,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:30:56,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:58,340 INFO L124 PetriNetUnfolderBase]: 3778/5967 cut-off events. [2024-06-20 16:30:58,341 INFO L125 PetriNetUnfolderBase]: For 2016293/2016298 co-relation queries the response was YES. [2024-06-20 16:30:58,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73090 conditions, 5967 events. 3778/5967 cut-off events. For 2016293/2016298 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 36124 event pairs, 677 based on Foata normal form. 5/5964 useless extension candidates. Maximal degree in co-relation 72887. Up to 4206 conditions per place. [2024-06-20 16:30:58,449 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 347 selfloop transitions, 259 changer transitions 0/611 dead transitions. [2024-06-20 16:30:58,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 611 transitions, 10189 flow [2024-06-20 16:30:58,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:30:58,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:30:58,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-20 16:30:58,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-20 16:30:58,451 INFO L175 Difference]: Start difference. First operand has 432 places, 591 transitions, 8245 flow. Second operand 10 states and 188 transitions. [2024-06-20 16:30:58,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 611 transitions, 10189 flow [2024-06-20 16:31:05,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 611 transitions, 9089 flow, removed 183 selfloop flow, removed 13 redundant places. [2024-06-20 16:31:05,391 INFO L231 Difference]: Finished difference. Result has 429 places, 591 transitions, 7670 flow [2024-06-20 16:31:05,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7145, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7670, PETRI_PLACES=429, PETRI_TRANSITIONS=591} [2024-06-20 16:31:05,391 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 386 predicate places. [2024-06-20 16:31:05,392 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 591 transitions, 7670 flow [2024-06-20 16:31:05,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:05,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:05,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:05,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-20 16:31:05,392 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:31:05,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:05,393 INFO L85 PathProgramCache]: Analyzing trace with hash -458295979, now seen corresponding path program 5 times [2024-06-20 16:31:05,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:05,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254280201] [2024-06-20 16:31:05,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:05,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:06,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:06,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:06,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254280201] [2024-06-20 16:31:06,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254280201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:06,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:06,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:31:06,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116352341] [2024-06-20 16:31:06,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:06,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:31:06,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:06,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:31:06,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:31:06,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:31:06,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 591 transitions, 7670 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:06,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:06,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:31:06,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:08,274 INFO L124 PetriNetUnfolderBase]: 3783/5918 cut-off events. [2024-06-20 16:31:08,274 INFO L125 PetriNetUnfolderBase]: For 2009123/2009123 co-relation queries the response was YES. [2024-06-20 16:31:08,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72281 conditions, 5918 events. 3783/5918 cut-off events. For 2009123/2009123 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 35271 event pairs, 829 based on Foata normal form. 1/5917 useless extension candidates. Maximal degree in co-relation 72081. Up to 5610 conditions per place. [2024-06-20 16:31:08,376 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 579 selfloop transitions, 23 changer transitions 0/607 dead transitions. [2024-06-20 16:31:08,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 607 transitions, 9078 flow [2024-06-20 16:31:08,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:31:08,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:31:08,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-20 16:31:08,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-20 16:31:08,378 INFO L175 Difference]: Start difference. First operand has 429 places, 591 transitions, 7670 flow. Second operand 10 states and 161 transitions. [2024-06-20 16:31:08,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 607 transitions, 9078 flow [2024-06-20 16:31:17,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 607 transitions, 8495 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-20 16:31:17,707 INFO L231 Difference]: Finished difference. Result has 430 places, 594 transitions, 7315 flow [2024-06-20 16:31:17,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7087, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7315, PETRI_PLACES=430, PETRI_TRANSITIONS=594} [2024-06-20 16:31:17,708 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 387 predicate places. [2024-06-20 16:31:17,708 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 594 transitions, 7315 flow [2024-06-20 16:31:17,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:17,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:17,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:17,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-20 16:31:17,709 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:31:17,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:17,709 INFO L85 PathProgramCache]: Analyzing trace with hash -457790989, now seen corresponding path program 6 times [2024-06-20 16:31:17,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:17,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118283913] [2024-06-20 16:31:17,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:17,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:18,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:18,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118283913] [2024-06-20 16:31:18,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118283913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:18,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:18,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:31:18,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859819196] [2024-06-20 16:31:18,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:18,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:31:18,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:18,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:31:18,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:31:19,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:31:19,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 594 transitions, 7315 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:19,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:19,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:31:19,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:20,793 INFO L124 PetriNetUnfolderBase]: 3780/5914 cut-off events. [2024-06-20 16:31:20,793 INFO L125 PetriNetUnfolderBase]: For 2017581/2017581 co-relation queries the response was YES. [2024-06-20 16:31:20,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71215 conditions, 5914 events. 3780/5914 cut-off events. For 2017581/2017581 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 35224 event pairs, 829 based on Foata normal form. 1/5913 useless extension candidates. Maximal degree in co-relation 71015. Up to 5600 conditions per place. [2024-06-20 16:31:20,890 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 577 selfloop transitions, 29 changer transitions 0/611 dead transitions. [2024-06-20 16:31:20,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 611 transitions, 8739 flow [2024-06-20 16:31:20,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:31:20,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:31:20,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-20 16:31:20,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-20 16:31:20,891 INFO L175 Difference]: Start difference. First operand has 430 places, 594 transitions, 7315 flow. Second operand 11 states and 175 transitions. [2024-06-20 16:31:20,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 611 transitions, 8739 flow [2024-06-20 16:31:29,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 611 transitions, 8533 flow, removed 82 selfloop flow, removed 8 redundant places. [2024-06-20 16:31:29,943 INFO L231 Difference]: Finished difference. Result has 433 places, 597 transitions, 7359 flow [2024-06-20 16:31:29,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7109, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7359, PETRI_PLACES=433, PETRI_TRANSITIONS=597} [2024-06-20 16:31:29,944 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 390 predicate places. [2024-06-20 16:31:29,944 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 597 transitions, 7359 flow [2024-06-20 16:31:29,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:29,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:29,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:29,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-20 16:31:29,944 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:31:29,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:29,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1277433102, now seen corresponding path program 1 times [2024-06-20 16:31:29,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:29,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776155183] [2024-06-20 16:31:29,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:29,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:31,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:31,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:31,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776155183] [2024-06-20 16:31:31,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776155183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:31,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:31,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:31,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072581824] [2024-06-20 16:31:31,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:31,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:31,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:31,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:31,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:31,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:31:31,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 597 transitions, 7359 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:31,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:31,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:31:31,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:32,868 INFO L124 PetriNetUnfolderBase]: 3626/5764 cut-off events. [2024-06-20 16:31:32,868 INFO L125 PetriNetUnfolderBase]: For 2057475/2057475 co-relation queries the response was YES. [2024-06-20 16:31:32,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70636 conditions, 5764 events. 3626/5764 cut-off events. For 2057475/2057475 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 35198 event pairs, 730 based on Foata normal form. 2/5764 useless extension candidates. Maximal degree in co-relation 70435. Up to 5178 conditions per place. [2024-06-20 16:31:32,971 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 561 selfloop transitions, 17 changer transitions 0/623 dead transitions. [2024-06-20 16:31:32,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 623 transitions, 8665 flow [2024-06-20 16:31:32,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:31:32,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:31:32,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-20 16:31:32,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2024-06-20 16:31:32,973 INFO L175 Difference]: Start difference. First operand has 433 places, 597 transitions, 7359 flow. Second operand 9 states and 164 transitions. [2024-06-20 16:31:32,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 623 transitions, 8665 flow [2024-06-20 16:31:43,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 623 transitions, 8443 flow, removed 86 selfloop flow, removed 9 redundant places. [2024-06-20 16:31:43,163 INFO L231 Difference]: Finished difference. Result has 433 places, 599 transitions, 7268 flow [2024-06-20 16:31:43,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7137, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7268, PETRI_PLACES=433, PETRI_TRANSITIONS=599} [2024-06-20 16:31:43,164 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 390 predicate places. [2024-06-20 16:31:43,164 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 599 transitions, 7268 flow [2024-06-20 16:31:43,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:43,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:43,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:43,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-20 16:31:43,164 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:31:43,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:43,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1188719472, now seen corresponding path program 2 times [2024-06-20 16:31:43,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:43,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025165943] [2024-06-20 16:31:43,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:43,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:44,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:44,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:44,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025165943] [2024-06-20 16:31:44,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025165943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:44,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:44,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:44,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921585746] [2024-06-20 16:31:44,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:44,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:44,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:44,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:44,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:44,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:31:44,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 599 transitions, 7268 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:44,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:44,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:31:44,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:46,224 INFO L124 PetriNetUnfolderBase]: 3634/5776 cut-off events. [2024-06-20 16:31:46,224 INFO L125 PetriNetUnfolderBase]: For 2055894/2055894 co-relation queries the response was YES. [2024-06-20 16:31:46,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70600 conditions, 5776 events. 3634/5776 cut-off events. For 2055894/2055894 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 35220 event pairs, 769 based on Foata normal form. 2/5776 useless extension candidates. Maximal degree in co-relation 70398. Up to 5212 conditions per place. [2024-06-20 16:31:46,323 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 556 selfloop transitions, 19 changer transitions 0/620 dead transitions. [2024-06-20 16:31:46,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 620 transitions, 8560 flow [2024-06-20 16:31:46,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:31:46,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:31:46,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-20 16:31:46,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-20 16:31:46,324 INFO L175 Difference]: Start difference. First operand has 433 places, 599 transitions, 7268 flow. Second operand 9 states and 161 transitions. [2024-06-20 16:31:46,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 620 transitions, 8560 flow [2024-06-20 16:31:55,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 620 transitions, 8445 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-20 16:31:55,327 INFO L231 Difference]: Finished difference. Result has 435 places, 601 transitions, 7292 flow [2024-06-20 16:31:55,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7153, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7292, PETRI_PLACES=435, PETRI_TRANSITIONS=601} [2024-06-20 16:31:55,327 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 392 predicate places. [2024-06-20 16:31:55,327 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 601 transitions, 7292 flow [2024-06-20 16:31:55,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:55,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:55,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:55,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-20 16:31:55,328 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:31:55,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:55,328 INFO L85 PathProgramCache]: Analyzing trace with hash -282739242, now seen corresponding path program 3 times [2024-06-20 16:31:55,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:55,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347743454] [2024-06-20 16:31:55,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:55,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:56,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:56,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:56,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347743454] [2024-06-20 16:31:56,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347743454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:56,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:56,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:56,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033186990] [2024-06-20 16:31:56,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:56,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:56,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:56,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:56,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:56,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:31:56,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 601 transitions, 7292 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:56,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:56,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:31:56,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:58,114 INFO L124 PetriNetUnfolderBase]: 3642/5788 cut-off events. [2024-06-20 16:31:58,114 INFO L125 PetriNetUnfolderBase]: For 2084933/2084933 co-relation queries the response was YES. [2024-06-20 16:31:58,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70892 conditions, 5788 events. 3642/5788 cut-off events. For 2084933/2084933 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 35291 event pairs, 767 based on Foata normal form. 2/5788 useless extension candidates. Maximal degree in co-relation 70689. Up to 5210 conditions per place. [2024-06-20 16:31:58,216 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 556 selfloop transitions, 22 changer transitions 0/623 dead transitions. [2024-06-20 16:31:58,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 623 transitions, 8596 flow [2024-06-20 16:31:58,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:31:58,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:31:58,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-20 16:31:58,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312169312169312 [2024-06-20 16:31:58,217 INFO L175 Difference]: Start difference. First operand has 435 places, 601 transitions, 7292 flow. Second operand 9 states and 163 transitions. [2024-06-20 16:31:58,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 623 transitions, 8596 flow [2024-06-20 16:32:08,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 623 transitions, 8473 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-20 16:32:08,819 INFO L231 Difference]: Finished difference. Result has 437 places, 603 transitions, 7318 flow [2024-06-20 16:32:08,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7169, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7318, PETRI_PLACES=437, PETRI_TRANSITIONS=603} [2024-06-20 16:32:08,819 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 394 predicate places. [2024-06-20 16:32:08,820 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 603 transitions, 7318 flow [2024-06-20 16:32:08,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:32:08,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:32:08,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:32:08,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-20 16:32:08,820 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:32:08,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:32:08,821 INFO L85 PathProgramCache]: Analyzing trace with hash -998170018, now seen corresponding path program 4 times [2024-06-20 16:32:08,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:32:08,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373673596] [2024-06-20 16:32:08,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:32:08,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:32:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:32:09,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:32:09,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:32:09,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373673596] [2024-06-20 16:32:09,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373673596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:32:09,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:32:09,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:32:09,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564637529] [2024-06-20 16:32:09,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:32:09,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:32:09,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:32:09,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:32:09,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:32:10,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:32:10,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 603 transitions, 7318 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:32:10,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:32:10,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:32:10,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:32:11,703 INFO L124 PetriNetUnfolderBase]: 3655/5811 cut-off events. [2024-06-20 16:32:11,703 INFO L125 PetriNetUnfolderBase]: For 2109948/2109948 co-relation queries the response was YES. [2024-06-20 16:32:11,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71258 conditions, 5811 events. 3655/5811 cut-off events. For 2109948/2109948 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 35553 event pairs, 765 based on Foata normal form. 2/5807 useless extension candidates. Maximal degree in co-relation 71054. Up to 5243 conditions per place. [2024-06-20 16:32:11,803 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 558 selfloop transitions, 22 changer transitions 0/625 dead transitions. [2024-06-20 16:32:11,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 625 transitions, 8669 flow [2024-06-20 16:32:11,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:32:11,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:32:11,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-20 16:32:11,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2024-06-20 16:32:11,804 INFO L175 Difference]: Start difference. First operand has 437 places, 603 transitions, 7318 flow. Second operand 9 states and 160 transitions. [2024-06-20 16:32:11,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 625 transitions, 8669 flow [2024-06-20 16:32:21,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 625 transitions, 8536 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-20 16:32:21,761 INFO L231 Difference]: Finished difference. Result has 440 places, 609 transitions, 7395 flow [2024-06-20 16:32:21,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7185, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7395, PETRI_PLACES=440, PETRI_TRANSITIONS=609} [2024-06-20 16:32:21,762 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 397 predicate places. [2024-06-20 16:32:21,762 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 609 transitions, 7395 flow [2024-06-20 16:32:21,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:32:21,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:32:21,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:32:21,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-20 16:32:21,762 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:32:21,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:32:21,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1084952188, now seen corresponding path program 5 times [2024-06-20 16:32:21,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:32:21,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722381972] [2024-06-20 16:32:21,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:32:21,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:32:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:32:22,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:32:22,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:32:22,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722381972] [2024-06-20 16:32:22,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722381972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:32:22,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:32:22,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:32:22,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138903147] [2024-06-20 16:32:22,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:32:22,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:32:22,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:32:22,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:32:22,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:32:23,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:32:23,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 609 transitions, 7395 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:32:23,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:32:23,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:32:23,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:32:24,724 INFO L124 PetriNetUnfolderBase]: 3663/5823 cut-off events. [2024-06-20 16:32:24,724 INFO L125 PetriNetUnfolderBase]: For 2136576/2136576 co-relation queries the response was YES. [2024-06-20 16:32:24,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71901 conditions, 5823 events. 3663/5823 cut-off events. For 2136576/2136576 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 35603 event pairs, 767 based on Foata normal form. 2/5819 useless extension candidates. Maximal degree in co-relation 71695. Up to 5255 conditions per place. [2024-06-20 16:32:24,826 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 560 selfloop transitions, 24 changer transitions 0/629 dead transitions. [2024-06-20 16:32:24,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 629 transitions, 8738 flow [2024-06-20 16:32:24,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:32:24,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:32:24,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-20 16:32:24,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2024-06-20 16:32:24,827 INFO L175 Difference]: Start difference. First operand has 440 places, 609 transitions, 7395 flow. Second operand 9 states and 160 transitions. [2024-06-20 16:32:24,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 629 transitions, 8738 flow [2024-06-20 16:32:39,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 629 transitions, 8587 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-06-20 16:32:39,583 INFO L231 Difference]: Finished difference. Result has 443 places, 613 transitions, 7434 flow [2024-06-20 16:32:39,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7248, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7434, PETRI_PLACES=443, PETRI_TRANSITIONS=613} [2024-06-20 16:32:39,584 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 400 predicate places. [2024-06-20 16:32:39,584 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 613 transitions, 7434 flow [2024-06-20 16:32:39,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:32:39,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:32:39,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:32:39,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-20 16:32:39,584 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:32:39,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:32:39,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1206636020, now seen corresponding path program 6 times [2024-06-20 16:32:39,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:32:39,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47789710] [2024-06-20 16:32:39,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:32:39,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:32:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:32:40,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:32:40,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:32:40,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47789710] [2024-06-20 16:32:40,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47789710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:32:40,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:32:40,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:32:40,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982634036] [2024-06-20 16:32:40,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:32:40,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:32:40,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:32:40,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:32:40,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:32:40,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:32:40,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 613 transitions, 7434 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:32:40,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:32:40,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:32:40,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:32:42,518 INFO L124 PetriNetUnfolderBase]: 3671/5835 cut-off events. [2024-06-20 16:32:42,518 INFO L125 PetriNetUnfolderBase]: For 2161304/2161304 co-relation queries the response was YES. [2024-06-20 16:32:42,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72191 conditions, 5835 events. 3671/5835 cut-off events. For 2161304/2161304 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 35702 event pairs, 765 based on Foata normal form. 2/5831 useless extension candidates. Maximal degree in co-relation 71984. Up to 5247 conditions per place. [2024-06-20 16:32:42,614 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 558 selfloop transitions, 29 changer transitions 0/632 dead transitions. [2024-06-20 16:32:42,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 632 transitions, 8760 flow [2024-06-20 16:32:42,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:32:42,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:32:42,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-20 16:32:42,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-20 16:32:42,615 INFO L175 Difference]: Start difference. First operand has 443 places, 613 transitions, 7434 flow. Second operand 9 states and 161 transitions. [2024-06-20 16:32:42,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 632 transitions, 8760 flow [2024-06-20 16:32:50,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 632 transitions, 8625 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-20 16:32:50,764 INFO L231 Difference]: Finished difference. Result has 447 places, 615 transitions, 7474 flow [2024-06-20 16:32:50,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7299, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7474, PETRI_PLACES=447, PETRI_TRANSITIONS=615} [2024-06-20 16:32:50,764 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 404 predicate places. [2024-06-20 16:32:50,764 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 615 transitions, 7474 flow [2024-06-20 16:32:50,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:32:50,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:32:50,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:32:50,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-20 16:32:50,765 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:32:50,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:32:50,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1749268971, now seen corresponding path program 1 times [2024-06-20 16:32:50,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:32:50,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703334773] [2024-06-20 16:32:50,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:32:50,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:32:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:32:51,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:32:51,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:32:51,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703334773] [2024-06-20 16:32:51,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703334773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:32:51,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:32:51,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:32:51,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927707006] [2024-06-20 16:32:51,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:32:51,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:32:51,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:32:51,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:32:51,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:32:52,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:32:52,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 615 transitions, 7474 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:32:52,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:32:52,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:32:52,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:32:53,721 INFO L124 PetriNetUnfolderBase]: 3843/6015 cut-off events. [2024-06-20 16:32:53,721 INFO L125 PetriNetUnfolderBase]: For 2181038/2181038 co-relation queries the response was YES. [2024-06-20 16:32:53,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73567 conditions, 6015 events. 3843/6015 cut-off events. For 2181038/2181038 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 35994 event pairs, 820 based on Foata normal form. 2/6015 useless extension candidates. Maximal degree in co-relation 73359. Up to 5669 conditions per place. [2024-06-20 16:32:53,833 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 601 selfloop transitions, 31 changer transitions 0/637 dead transitions. [2024-06-20 16:32:53,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 637 transitions, 8966 flow [2024-06-20 16:32:53,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:32:53,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:32:53,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-20 16:32:53,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4023809523809524 [2024-06-20 16:32:53,835 INFO L175 Difference]: Start difference. First operand has 447 places, 615 transitions, 7474 flow. Second operand 10 states and 169 transitions. [2024-06-20 16:32:53,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 637 transitions, 8966 flow [2024-06-20 16:33:04,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 637 transitions, 8807 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-20 16:33:04,528 INFO L231 Difference]: Finished difference. Result has 450 places, 619 transitions, 7546 flow [2024-06-20 16:33:04,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7315, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7546, PETRI_PLACES=450, PETRI_TRANSITIONS=619} [2024-06-20 16:33:04,529 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 407 predicate places. [2024-06-20 16:33:04,529 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 619 transitions, 7546 flow [2024-06-20 16:33:04,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:33:04,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:33:04,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:33:04,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-20 16:33:04,530 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:33:04,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:33:04,530 INFO L85 PathProgramCache]: Analyzing trace with hash -724024228, now seen corresponding path program 7 times [2024-06-20 16:33:04,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:33:04,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862084007] [2024-06-20 16:33:04,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:33:04,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:33:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:33:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:33:05,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:33:05,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862084007] [2024-06-20 16:33:05,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862084007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:33:05,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:33:05,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:33:05,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860631672] [2024-06-20 16:33:05,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:33:05,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:33:05,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:33:05,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:33:05,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:33:05,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:33:05,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 619 transitions, 7546 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:33:05,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:33:05,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:33:05,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:33:07,563 INFO L124 PetriNetUnfolderBase]: 3689/5866 cut-off events. [2024-06-20 16:33:07,563 INFO L125 PetriNetUnfolderBase]: For 2215552/2215559 co-relation queries the response was YES. [2024-06-20 16:33:07,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73366 conditions, 5866 events. 3689/5866 cut-off events. For 2215552/2215559 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 35955 event pairs, 762 based on Foata normal form. 4/5855 useless extension candidates. Maximal degree in co-relation 73157. Up to 5267 conditions per place. [2024-06-20 16:33:07,667 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 552 selfloop transitions, 41 changer transitions 0/638 dead transitions. [2024-06-20 16:33:07,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 638 transitions, 8939 flow [2024-06-20 16:33:07,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:33:07,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:33:07,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-20 16:33:07,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2024-06-20 16:33:07,668 INFO L175 Difference]: Start difference. First operand has 450 places, 619 transitions, 7546 flow. Second operand 9 states and 160 transitions. [2024-06-20 16:33:07,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 638 transitions, 8939 flow [2024-06-20 16:33:15,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 638 transitions, 8654 flow, removed 73 selfloop flow, removed 10 redundant places. [2024-06-20 16:33:15,690 INFO L231 Difference]: Finished difference. Result has 450 places, 624 transitions, 7513 flow [2024-06-20 16:33:15,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7261, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7513, PETRI_PLACES=450, PETRI_TRANSITIONS=624} [2024-06-20 16:33:15,690 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 407 predicate places. [2024-06-20 16:33:15,691 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 624 transitions, 7513 flow [2024-06-20 16:33:15,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:33:15,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:33:15,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:33:15,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-20 16:33:15,691 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:33:15,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:33:15,691 INFO L85 PathProgramCache]: Analyzing trace with hash 800974714, now seen corresponding path program 8 times [2024-06-20 16:33:15,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:33:15,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776463598] [2024-06-20 16:33:15,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:33:15,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:33:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:33:16,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:33:16,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:33:16,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776463598] [2024-06-20 16:33:16,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776463598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:33:16,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:33:16,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:33:16,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037259461] [2024-06-20 16:33:16,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:33:16,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:33:16,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:33:16,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:33:16,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:33:17,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:33:17,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 624 transitions, 7513 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:33:17,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:33:17,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:33:17,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:33:18,615 INFO L124 PetriNetUnfolderBase]: 3702/5885 cut-off events. [2024-06-20 16:33:18,615 INFO L125 PetriNetUnfolderBase]: For 2244797/2244804 co-relation queries the response was YES. [2024-06-20 16:33:18,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74032 conditions, 5885 events. 3702/5885 cut-off events. For 2244797/2244804 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 36079 event pairs, 762 based on Foata normal form. 4/5874 useless extension candidates. Maximal degree in co-relation 73821. Up to 5285 conditions per place. [2024-06-20 16:33:18,719 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 556 selfloop transitions, 42 changer transitions 0/643 dead transitions. [2024-06-20 16:33:18,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 643 transitions, 8922 flow [2024-06-20 16:33:18,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:33:18,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:33:18,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-20 16:33:18,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-20 16:33:18,720 INFO L175 Difference]: Start difference. First operand has 450 places, 624 transitions, 7513 flow. Second operand 9 states and 162 transitions. [2024-06-20 16:33:18,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 643 transitions, 8922 flow [2024-06-20 16:33:27,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 643 transitions, 8713 flow, removed 63 selfloop flow, removed 6 redundant places. [2024-06-20 16:33:27,118 INFO L231 Difference]: Finished difference. Result has 454 places, 630 transitions, 7584 flow [2024-06-20 16:33:27,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7310, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7584, PETRI_PLACES=454, PETRI_TRANSITIONS=630} [2024-06-20 16:33:27,118 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 411 predicate places. [2024-06-20 16:33:27,118 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 630 transitions, 7584 flow [2024-06-20 16:33:27,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:33:27,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:33:27,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:33:27,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-20 16:33:27,119 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:33:27,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:33:27,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1069814640, now seen corresponding path program 9 times [2024-06-20 16:33:27,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:33:27,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992751624] [2024-06-20 16:33:27,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:33:27,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:33:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:33:28,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:33:28,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:33:28,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992751624] [2024-06-20 16:33:28,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992751624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:33:28,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:33:28,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:33:28,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85883328] [2024-06-20 16:33:28,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:33:28,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:33:28,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:33:28,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:33:28,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:33:28,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:33:28,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 630 transitions, 7584 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:33:28,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:33:28,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:33:28,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:33:30,127 INFO L124 PetriNetUnfolderBase]: 3710/5897 cut-off events. [2024-06-20 16:33:30,127 INFO L125 PetriNetUnfolderBase]: For 2273293/2273300 co-relation queries the response was YES. [2024-06-20 16:33:30,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74661 conditions, 5897 events. 3710/5897 cut-off events. For 2273293/2273300 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 36143 event pairs, 764 based on Foata normal form. 4/5886 useless extension candidates. Maximal degree in co-relation 74448. Up to 5297 conditions per place. [2024-06-20 16:33:30,238 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 556 selfloop transitions, 47 changer transitions 0/648 dead transitions. [2024-06-20 16:33:30,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 648 transitions, 8987 flow [2024-06-20 16:33:30,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:33:30,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:33:30,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-20 16:33:30,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119047619047619 [2024-06-20 16:33:30,239 INFO L175 Difference]: Start difference. First operand has 454 places, 630 transitions, 7584 flow. Second operand 10 states and 173 transitions. [2024-06-20 16:33:30,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 648 transitions, 8987 flow Killed by 15