./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix001.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix001.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix001.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix001.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:48:36,844 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:48:36,891 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:48:36,894 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:48:36,894 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:48:36,920 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:48:36,920 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:48:36,920 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:48:36,921 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:48:36,921 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:48:36,921 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:48:36,921 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:48:36,922 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:48:36,922 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:48:36,922 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:48:36,922 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:48:36,923 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:48:36,923 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:48:36,923 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:48:36,923 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:48:36,923 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:48:36,926 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:48:36,927 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:48:36,927 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:48:36,929 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:48:36,929 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:48:36,930 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:48:36,930 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:48:36,931 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:48:36,931 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:48:36,932 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:48:36,932 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:48:36,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:48:36,932 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:48:36,932 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:48:36,932 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:48:36,932 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:48:36,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:48:36,932 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:48:36,932 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:48:36,933 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:48:36,933 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:48:36,933 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:48:36,933 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:48:37,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:48:37,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:48:37,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:48:37,146 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:48:37,146 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:48:37,147 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix001.oepc.yml/witness.yml [2024-06-28 02:48:37,292 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:48:37,292 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:48:37,293 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix001.oepc.i [2024-06-28 02:48:38,332 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:48:38,503 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:48:38,516 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix001.oepc.i [2024-06-28 02:48:38,527 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7243702a9/71390e107d9842ab9ff59b1085e623e4/FLAG96f038af2 [2024-06-28 02:48:38,542 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7243702a9/71390e107d9842ab9ff59b1085e623e4 [2024-06-28 02:48:38,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:48:38,544 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:48:38,545 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:48:38,545 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:48:38,548 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:48:38,549 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:48:37" (1/2) ... [2024-06-28 02:48:38,549 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cc0ea27 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:38, skipping insertion in model container [2024-06-28 02:48:38,550 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:48:37" (1/2) ... [2024-06-28 02:48:38,551 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@19951241 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:38, skipping insertion in model container [2024-06-28 02:48:38,551 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:48:38" (2/2) ... [2024-06-28 02:48:38,551 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cc0ea27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:38, skipping insertion in model container [2024-06-28 02:48:38,551 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:48:38" (2/2) ... [2024-06-28 02:48:38,551 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:48:38,633 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:48:38,634 INFO L97 edCorrectnessWitness]: Location invariant before [L870-L870] (((((((((((((((((((((! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0) [2024-06-28 02:48:38,635 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] (((((((((((((((((((((! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0) [2024-06-28 02:48:38,635 INFO L97 edCorrectnessWitness]: Location invariant before [L869-L869] (((((((((((((((((((((! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0) [2024-06-28 02:48:38,635 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:48:38,636 INFO L106 edCorrectnessWitness]: ghost_update [L865-L865] multithreaded = 1; [2024-06-28 02:48:38,672 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:48:39,025 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:48:39,034 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:48:39,165 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:48:39,223 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:48:39,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:39 WrapperNode [2024-06-28 02:48:39,223 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:48:39,238 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:48:39,238 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:48:39,238 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:48:39,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:39" (1/1) ... [2024-06-28 02:48:39,283 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:39" (1/1) ... [2024-06-28 02:48:39,319 INFO L138 Inliner]: procedures = 175, calls = 49, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 151 [2024-06-28 02:48:39,320 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:48:39,320 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:48:39,320 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:48:39,320 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:48:39,331 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:39" (1/1) ... [2024-06-28 02:48:39,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:39" (1/1) ... [2024-06-28 02:48:39,334 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:39" (1/1) ... [2024-06-28 02:48:39,346 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 02:48:39,346 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:39" (1/1) ... [2024-06-28 02:48:39,347 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:39" (1/1) ... [2024-06-28 02:48:39,355 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:39" (1/1) ... [2024-06-28 02:48:39,356 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:39" (1/1) ... [2024-06-28 02:48:39,358 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:39" (1/1) ... [2024-06-28 02:48:39,359 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:39" (1/1) ... [2024-06-28 02:48:39,362 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:48:39,363 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:48:39,363 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:48:39,363 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:48:39,364 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:39" (1/1) ... [2024-06-28 02:48:39,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:48:39,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:48:39,404 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 02:48:39,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 02:48:39,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:48:39,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:48:39,443 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:48:39,443 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:48:39,443 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:48:39,444 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:48:39,444 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 02:48:39,444 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 02:48:39,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:48:39,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:48:39,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:48:39,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:48:39,446 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:48:39,572 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:48:39,574 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:48:39,930 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:48:39,930 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:48:40,097 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:48:40,097 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:48:40,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:48:40 BoogieIcfgContainer [2024-06-28 02:48:40,098 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:48:40,100 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:48:40,100 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:48:40,103 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:48:40,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:48:37" (1/4) ... [2024-06-28 02:48:40,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a65582e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:48:40, skipping insertion in model container [2024-06-28 02:48:40,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:48:38" (2/4) ... [2024-06-28 02:48:40,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a65582e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:48:40, skipping insertion in model container [2024-06-28 02:48:40,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:39" (3/4) ... [2024-06-28 02:48:40,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a65582e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:48:40, skipping insertion in model container [2024-06-28 02:48:40,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:48:40" (4/4) ... [2024-06-28 02:48:40,107 INFO L112 eAbstractionObserver]: Analyzing ICFG mix001.oepc.i [2024-06-28 02:48:40,120 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:48:40,120 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 02:48:40,121 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:48:40,161 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:48:40,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 43 transitions, 98 flow [2024-06-28 02:48:40,215 INFO L124 PetriNetUnfolderBase]: 0/40 cut-off events. [2024-06-28 02:48:40,216 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:48:40,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 40 events. 0/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 02:48:40,217 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 43 transitions, 98 flow [2024-06-28 02:48:40,220 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 34 transitions, 77 flow [2024-06-28 02:48:40,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:48:40,235 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;@4f4da9f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:48:40,236 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 02:48:40,240 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:48:40,240 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 02:48:40,240 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:48:40,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:40,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:48:40,241 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)] === [2024-06-28 02:48:40,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:40,245 INFO L85 PathProgramCache]: Analyzing trace with hash 421617153, now seen corresponding path program 1 times [2024-06-28 02:48:40,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:40,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334738691] [2024-06-28 02:48:40,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:40,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:41,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:41,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:41,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334738691] [2024-06-28 02:48:41,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334738691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:41,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:41,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:48:41,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132732469] [2024-06-28 02:48:41,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:41,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:48:41,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:41,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:48:41,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:48:41,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-06-28 02:48:41,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:41,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:41,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-06-28 02:48:41,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:41,560 INFO L124 PetriNetUnfolderBase]: 1363/2133 cut-off events. [2024-06-28 02:48:41,561 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-06-28 02:48:41,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4257 conditions, 2133 events. 1363/2133 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10767 event pairs, 964 based on Foata normal form. 1/2077 useless extension candidates. Maximal degree in co-relation 4245. Up to 2037 conditions per place. [2024-06-28 02:48:41,578 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 32 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-06-28 02:48:41,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 175 flow [2024-06-28 02:48:41,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:48:41,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:48:41,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-06-28 02:48:41,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2024-06-28 02:48:41,589 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 77 flow. Second operand 3 states and 81 transitions. [2024-06-28 02:48:41,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 175 flow [2024-06-28 02:48:41,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 170 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 02:48:41,595 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 104 flow [2024-06-28 02:48:41,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-28 02:48:41,600 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2024-06-28 02:48:41,600 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 104 flow [2024-06-28 02:48:41,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:41,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:41,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:41,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:48:41,601 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)] === [2024-06-28 02:48:41,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:41,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1447404018, now seen corresponding path program 1 times [2024-06-28 02:48:41,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:41,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650576551] [2024-06-28 02:48:41,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:41,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:42,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:42,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:42,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650576551] [2024-06-28 02:48:42,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650576551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:42,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:42,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:48:42,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780566496] [2024-06-28 02:48:42,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:42,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:48:42,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:42,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:48:42,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:48:42,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-06-28 02:48:42,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:42,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:42,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-06-28 02:48:42,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:42,482 INFO L124 PetriNetUnfolderBase]: 1357/2134 cut-off events. [2024-06-28 02:48:42,483 INFO L125 PetriNetUnfolderBase]: For 414/414 co-relation queries the response was YES. [2024-06-28 02:48:42,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4801 conditions, 2134 events. 1357/2134 cut-off events. For 414/414 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10886 event pairs, 840 based on Foata normal form. 3/2120 useless extension candidates. Maximal degree in co-relation 4789. Up to 2013 conditions per place. [2024-06-28 02:48:42,495 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 39 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2024-06-28 02:48:42,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 54 transitions, 242 flow [2024-06-28 02:48:42,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:48:42,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:48:42,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-06-28 02:48:42,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6104651162790697 [2024-06-28 02:48:42,498 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 104 flow. Second operand 4 states and 105 transitions. [2024-06-28 02:48:42,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 54 transitions, 242 flow [2024-06-28 02:48:42,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 54 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:48:42,501 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 140 flow [2024-06-28 02:48:42,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-06-28 02:48:42,502 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2024-06-28 02:48:42,502 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 140 flow [2024-06-28 02:48:42,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:42,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:42,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:42,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:48:42,505 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)] === [2024-06-28 02:48:42,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:42,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1919853034, now seen corresponding path program 1 times [2024-06-28 02:48:42,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:42,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288469178] [2024-06-28 02:48:42,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:42,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:43,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:43,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:43,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288469178] [2024-06-28 02:48:43,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288469178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:43,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:43,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:48:43,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091136510] [2024-06-28 02:48:43,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:43,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:48:43,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:43,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:48:43,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:48:43,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-06-28 02:48:43,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:43,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:43,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-06-28 02:48:43,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:43,645 INFO L124 PetriNetUnfolderBase]: 1345/2138 cut-off events. [2024-06-28 02:48:43,645 INFO L125 PetriNetUnfolderBase]: For 1162/1162 co-relation queries the response was YES. [2024-06-28 02:48:43,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5310 conditions, 2138 events. 1345/2138 cut-off events. For 1162/1162 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 11001 event pairs, 592 based on Foata normal form. 6/2124 useless extension candidates. Maximal degree in co-relation 5296. Up to 1965 conditions per place. [2024-06-28 02:48:43,654 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 47 selfloop transitions, 10 changer transitions 0/65 dead transitions. [2024-06-28 02:48:43,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 65 transitions, 324 flow [2024-06-28 02:48:43,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:48:43,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:48:43,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-06-28 02:48:43,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6046511627906976 [2024-06-28 02:48:43,659 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 140 flow. Second operand 5 states and 130 transitions. [2024-06-28 02:48:43,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 65 transitions, 324 flow [2024-06-28 02:48:43,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 65 transitions, 310 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 02:48:43,662 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 176 flow [2024-06-28 02:48:43,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=176, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-06-28 02:48:43,663 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 6 predicate places. [2024-06-28 02:48:43,663 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 176 flow [2024-06-28 02:48:43,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:43,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:43,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:43,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:48:43,664 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:48:43,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:43,665 INFO L85 PathProgramCache]: Analyzing trace with hash -143902164, now seen corresponding path program 1 times [2024-06-28 02:48:43,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:43,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094266166] [2024-06-28 02:48:43,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:43,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:44,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:44,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:44,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094266166] [2024-06-28 02:48:44,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094266166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:44,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:44,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:48:44,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304073396] [2024-06-28 02:48:44,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:44,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:48:44,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:44,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:48:44,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:48:44,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:48:44,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 176 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:44,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:44,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:48:44,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:44,849 INFO L124 PetriNetUnfolderBase]: 1930/2977 cut-off events. [2024-06-28 02:48:44,849 INFO L125 PetriNetUnfolderBase]: For 2797/2797 co-relation queries the response was YES. [2024-06-28 02:48:44,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8032 conditions, 2977 events. 1930/2977 cut-off events. For 2797/2797 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14863 event pairs, 1075 based on Foata normal form. 2/2977 useless extension candidates. Maximal degree in co-relation 8016. Up to 2849 conditions per place. [2024-06-28 02:48:44,863 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 44 selfloop transitions, 8 changer transitions 0/57 dead transitions. [2024-06-28 02:48:44,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 322 flow [2024-06-28 02:48:44,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:48:44,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:48:44,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2024-06-28 02:48:44,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558139534883721 [2024-06-28 02:48:44,865 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 176 flow. Second operand 5 states and 98 transitions. [2024-06-28 02:48:44,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 322 flow [2024-06-28 02:48:44,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 298 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 02:48:44,867 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 196 flow [2024-06-28 02:48:44,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-28 02:48:44,868 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2024-06-28 02:48:44,868 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 196 flow [2024-06-28 02:48:44,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:44,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:44,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:44,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:48:44,869 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:48:44,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:44,869 INFO L85 PathProgramCache]: Analyzing trace with hash 866500830, now seen corresponding path program 1 times [2024-06-28 02:48:44,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:44,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908393296] [2024-06-28 02:48:44,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:44,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:46,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:46,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:46,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908393296] [2024-06-28 02:48:46,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908393296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:46,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:46,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:48:46,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664084344] [2024-06-28 02:48:46,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:46,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:48:46,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:46,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:48:46,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:48:46,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-28 02:48:46,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 196 flow. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:46,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:46,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-28 02:48:46,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:46,876 INFO L124 PetriNetUnfolderBase]: 1797/2828 cut-off events. [2024-06-28 02:48:46,877 INFO L125 PetriNetUnfolderBase]: For 4327/4327 co-relation queries the response was YES. [2024-06-28 02:48:46,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8152 conditions, 2828 events. 1797/2828 cut-off events. For 4327/4327 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14574 event pairs, 603 based on Foata normal form. 6/2822 useless extension candidates. Maximal degree in co-relation 8135. Up to 2550 conditions per place. [2024-06-28 02:48:46,891 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 67 selfloop transitions, 18 changer transitions 0/93 dead transitions. [2024-06-28 02:48:46,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 93 transitions, 498 flow [2024-06-28 02:48:46,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:46,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:46,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 02:48:46,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5523255813953488 [2024-06-28 02:48:46,893 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 196 flow. Second operand 8 states and 190 transitions. [2024-06-28 02:48:46,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 93 transitions, 498 flow [2024-06-28 02:48:46,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 93 transitions, 478 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 02:48:46,896 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 265 flow [2024-06-28 02:48:46,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=265, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-06-28 02:48:46,896 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 14 predicate places. [2024-06-28 02:48:46,896 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 265 flow [2024-06-28 02:48:46,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:46,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:46,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:46,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:48:46,897 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)] === [2024-06-28 02:48:46,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:46,898 INFO L85 PathProgramCache]: Analyzing trace with hash -165998705, now seen corresponding path program 1 times [2024-06-28 02:48:46,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:46,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011459246] [2024-06-28 02:48:46,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:46,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:47,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:47,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:47,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011459246] [2024-06-28 02:48:47,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011459246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:47,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:47,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:48:47,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327637087] [2024-06-28 02:48:47,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:47,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:48:47,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:47,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:48:47,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:48:47,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:48:47,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 265 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:47,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:47,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:48:47,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:48,168 INFO L124 PetriNetUnfolderBase]: 1911/2946 cut-off events. [2024-06-28 02:48:48,168 INFO L125 PetriNetUnfolderBase]: For 6507/6507 co-relation queries the response was YES. [2024-06-28 02:48:48,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9332 conditions, 2946 events. 1911/2946 cut-off events. For 6507/6507 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14688 event pairs, 750 based on Foata normal form. 4/2948 useless extension candidates. Maximal degree in co-relation 9312. Up to 2802 conditions per place. [2024-06-28 02:48:48,189 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 56 selfloop transitions, 11 changer transitions 0/72 dead transitions. [2024-06-28 02:48:48,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 72 transitions, 459 flow [2024-06-28 02:48:48,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:48:48,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:48:48,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-28 02:48:48,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44573643410852715 [2024-06-28 02:48:48,191 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 265 flow. Second operand 6 states and 115 transitions. [2024-06-28 02:48:48,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 72 transitions, 459 flow [2024-06-28 02:48:48,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 72 transitions, 416 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 02:48:48,196 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 278 flow [2024-06-28 02:48:48,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=278, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2024-06-28 02:48:48,198 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 16 predicate places. [2024-06-28 02:48:48,199 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 278 flow [2024-06-28 02:48:48,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:48,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:48,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:48,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:48:48,199 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)] === [2024-06-28 02:48:48,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:48,200 INFO L85 PathProgramCache]: Analyzing trace with hash -857666613, now seen corresponding path program 1 times [2024-06-28 02:48:48,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:48,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557041600] [2024-06-28 02:48:48,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:48,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:48,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:48,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:48,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557041600] [2024-06-28 02:48:48,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557041600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:48,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:48,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:48:48,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709795152] [2024-06-28 02:48:48,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:48,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:48:48,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:48,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:48:48,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:48:48,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:48:48,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 278 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:48,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:48,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:48:48,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:49,399 INFO L124 PetriNetUnfolderBase]: 1922/2986 cut-off events. [2024-06-28 02:48:49,400 INFO L125 PetriNetUnfolderBase]: For 8450/8456 co-relation queries the response was YES. [2024-06-28 02:48:49,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9989 conditions, 2986 events. 1922/2986 cut-off events. For 8450/8456 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 15081 event pairs, 751 based on Foata normal form. 6/2989 useless extension candidates. Maximal degree in co-relation 9967. Up to 2801 conditions per place. [2024-06-28 02:48:49,411 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 61 selfloop transitions, 16 changer transitions 0/82 dead transitions. [2024-06-28 02:48:49,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 82 transitions, 550 flow [2024-06-28 02:48:49,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:48:49,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:48:49,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-28 02:48:49,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4689922480620155 [2024-06-28 02:48:49,413 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 278 flow. Second operand 6 states and 121 transitions. [2024-06-28 02:48:49,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 82 transitions, 550 flow [2024-06-28 02:48:49,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 82 transitions, 518 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 02:48:49,418 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 336 flow [2024-06-28 02:48:49,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=336, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2024-06-28 02:48:49,419 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 18 predicate places. [2024-06-28 02:48:49,419 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 336 flow [2024-06-28 02:48:49,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:49,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:49,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:49,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:48:49,420 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)] === [2024-06-28 02:48:49,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:49,420 INFO L85 PathProgramCache]: Analyzing trace with hash -535513683, now seen corresponding path program 2 times [2024-06-28 02:48:49,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:49,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485503128] [2024-06-28 02:48:49,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:49,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:50,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:50,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:50,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485503128] [2024-06-28 02:48:50,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485503128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:50,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:50,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:48:50,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055063176] [2024-06-28 02:48:50,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:50,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:48:50,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:50,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:48:50,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:48:50,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:48:50,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 336 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:50,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:50,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:48:50,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:50,597 INFO L124 PetriNetUnfolderBase]: 1917/2978 cut-off events. [2024-06-28 02:48:50,597 INFO L125 PetriNetUnfolderBase]: For 10815/10815 co-relation queries the response was YES. [2024-06-28 02:48:50,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10568 conditions, 2978 events. 1917/2978 cut-off events. For 10815/10815 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 15006 event pairs, 747 based on Foata normal form. 2/2978 useless extension candidates. Maximal degree in co-relation 10545. Up to 2820 conditions per place. [2024-06-28 02:48:50,611 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 61 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2024-06-28 02:48:50,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 77 transitions, 518 flow [2024-06-28 02:48:50,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:48:50,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:48:50,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2024-06-28 02:48:50,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-28 02:48:50,613 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 336 flow. Second operand 6 states and 114 transitions. [2024-06-28 02:48:50,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 77 transitions, 518 flow [2024-06-28 02:48:50,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 77 transitions, 482 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-28 02:48:50,621 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 330 flow [2024-06-28 02:48:50,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=330, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2024-06-28 02:48:50,623 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 22 predicate places. [2024-06-28 02:48:50,624 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 330 flow [2024-06-28 02:48:50,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:50,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:50,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:50,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:48:50,625 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:48:50,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:50,625 INFO L85 PathProgramCache]: Analyzing trace with hash -818010091, now seen corresponding path program 1 times [2024-06-28 02:48:50,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:50,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252699353] [2024-06-28 02:48:50,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:50,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:51,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:51,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:51,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252699353] [2024-06-28 02:48:51,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252699353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:51,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:51,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:48:51,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366006380] [2024-06-28 02:48:51,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:51,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:48:51,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:51,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:48:51,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:48:51,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:48:51,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 330 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:51,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:51,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:48:51,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:52,246 INFO L124 PetriNetUnfolderBase]: 1928/2994 cut-off events. [2024-06-28 02:48:52,247 INFO L125 PetriNetUnfolderBase]: For 12919/12925 co-relation queries the response was YES. [2024-06-28 02:48:52,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10919 conditions, 2994 events. 1928/2994 cut-off events. For 12919/12925 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 15069 event pairs, 733 based on Foata normal form. 6/2997 useless extension candidates. Maximal degree in co-relation 10894. Up to 2772 conditions per place. [2024-06-28 02:48:52,259 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 66 selfloop transitions, 24 changer transitions 0/95 dead transitions. [2024-06-28 02:48:52,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 95 transitions, 662 flow [2024-06-28 02:48:52,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:48:52,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:48:52,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-28 02:48:52,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4717607973421927 [2024-06-28 02:48:52,261 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 330 flow. Second operand 7 states and 142 transitions. [2024-06-28 02:48:52,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 95 transitions, 662 flow [2024-06-28 02:48:52,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 95 transitions, 632 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 02:48:52,270 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 414 flow [2024-06-28 02:48:52,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=414, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2024-06-28 02:48:52,271 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 24 predicate places. [2024-06-28 02:48:52,271 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 414 flow [2024-06-28 02:48:52,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:52,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:52,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:52,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:48:52,272 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:48:52,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:52,272 INFO L85 PathProgramCache]: Analyzing trace with hash 239126667, now seen corresponding path program 2 times [2024-06-28 02:48:52,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:52,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340651906] [2024-06-28 02:48:52,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:52,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:53,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:53,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:53,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340651906] [2024-06-28 02:48:53,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340651906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:53,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:53,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:48:53,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362892132] [2024-06-28 02:48:53,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:53,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:48:53,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:53,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:48:53,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:48:53,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:48:53,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 414 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:53,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:53,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:48:53,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:53,753 INFO L124 PetriNetUnfolderBase]: 1939/3010 cut-off events. [2024-06-28 02:48:53,753 INFO L125 PetriNetUnfolderBase]: For 16224/16230 co-relation queries the response was YES. [2024-06-28 02:48:53,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11666 conditions, 3010 events. 1939/3010 cut-off events. For 16224/16230 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 15146 event pairs, 733 based on Foata normal form. 6/3013 useless extension candidates. Maximal degree in co-relation 11640. Up to 2819 conditions per place. [2024-06-28 02:48:53,771 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 69 selfloop transitions, 19 changer transitions 0/93 dead transitions. [2024-06-28 02:48:53,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 93 transitions, 678 flow [2024-06-28 02:48:53,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:48:53,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:48:53,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 02:48:53,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45182724252491696 [2024-06-28 02:48:53,773 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 414 flow. Second operand 7 states and 136 transitions. [2024-06-28 02:48:53,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 93 transitions, 678 flow [2024-06-28 02:48:53,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 93 transitions, 630 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 02:48:53,784 INFO L231 Difference]: Finished difference. Result has 72 places, 71 transitions, 450 flow [2024-06-28 02:48:53,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=450, PETRI_PLACES=72, PETRI_TRANSITIONS=71} [2024-06-28 02:48:53,785 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 28 predicate places. [2024-06-28 02:48:53,785 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 71 transitions, 450 flow [2024-06-28 02:48:53,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:53,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:53,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:53,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:48:53,786 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)] === [2024-06-28 02:48:53,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:53,787 INFO L85 PathProgramCache]: Analyzing trace with hash 239126884, now seen corresponding path program 1 times [2024-06-28 02:48:53,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:53,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803305072] [2024-06-28 02:48:53,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:53,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:54,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:54,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:54,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803305072] [2024-06-28 02:48:54,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803305072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:54,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:54,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:48:54,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229837447] [2024-06-28 02:48:54,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:54,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:48:54,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:54,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:48:54,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:48:54,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:48:54,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 71 transitions, 450 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:54,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:54,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:48:54,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:55,059 INFO L124 PetriNetUnfolderBase]: 1977/3062 cut-off events. [2024-06-28 02:48:55,059 INFO L125 PetriNetUnfolderBase]: For 18996/19002 co-relation queries the response was YES. [2024-06-28 02:48:55,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12100 conditions, 3062 events. 1977/3062 cut-off events. For 18996/19002 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 15351 event pairs, 688 based on Foata normal form. 5/3063 useless extension candidates. Maximal degree in co-relation 12072. Up to 2827 conditions per place. [2024-06-28 02:48:55,075 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 78 selfloop transitions, 23 changer transitions 0/106 dead transitions. [2024-06-28 02:48:55,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 106 transitions, 822 flow [2024-06-28 02:48:55,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:48:55,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:48:55,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-28 02:48:55,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4717607973421927 [2024-06-28 02:48:55,076 INFO L175 Difference]: Start difference. First operand has 72 places, 71 transitions, 450 flow. Second operand 7 states and 142 transitions. [2024-06-28 02:48:55,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 106 transitions, 822 flow [2024-06-28 02:48:55,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 106 transitions, 772 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 02:48:55,086 INFO L231 Difference]: Finished difference. Result has 75 places, 80 transitions, 540 flow [2024-06-28 02:48:55,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=540, PETRI_PLACES=75, PETRI_TRANSITIONS=80} [2024-06-28 02:48:55,087 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 31 predicate places. [2024-06-28 02:48:55,087 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 80 transitions, 540 flow [2024-06-28 02:48:55,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:55,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:55,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:55,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:48:55,088 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)] === [2024-06-28 02:48:55,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:55,088 INFO L85 PathProgramCache]: Analyzing trace with hash 579213004, now seen corresponding path program 2 times [2024-06-28 02:48:55,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:55,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153148103] [2024-06-28 02:48:55,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:55,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:55,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:55,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:55,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153148103] [2024-06-28 02:48:55,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153148103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:55,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:55,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:48:55,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171400552] [2024-06-28 02:48:55,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:55,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:48:55,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:55,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:48:55,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:48:55,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:48:55,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 80 transitions, 540 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:55,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:55,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:48:55,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:56,374 INFO L124 PetriNetUnfolderBase]: 1999/3099 cut-off events. [2024-06-28 02:48:56,374 INFO L125 PetriNetUnfolderBase]: For 23136/23136 co-relation queries the response was YES. [2024-06-28 02:48:56,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13101 conditions, 3099 events. 1999/3099 cut-off events. For 23136/23136 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 15539 event pairs, 695 based on Foata normal form. 4/3101 useless extension candidates. Maximal degree in co-relation 13071. Up to 2921 conditions per place. [2024-06-28 02:48:56,390 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 84 selfloop transitions, 14 changer transitions 0/103 dead transitions. [2024-06-28 02:48:56,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 103 transitions, 822 flow [2024-06-28 02:48:56,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:48:56,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:48:56,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-28 02:48:56,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43853820598006643 [2024-06-28 02:48:56,392 INFO L175 Difference]: Start difference. First operand has 75 places, 80 transitions, 540 flow. Second operand 7 states and 132 transitions. [2024-06-28 02:48:56,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 103 transitions, 822 flow [2024-06-28 02:48:56,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 103 transitions, 794 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-28 02:48:56,405 INFO L231 Difference]: Finished difference. Result has 80 places, 83 transitions, 588 flow [2024-06-28 02:48:56,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=588, PETRI_PLACES=80, PETRI_TRANSITIONS=83} [2024-06-28 02:48:56,406 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 36 predicate places. [2024-06-28 02:48:56,406 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 83 transitions, 588 flow [2024-06-28 02:48:56,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:56,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:56,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:56,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:48:56,407 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:48:56,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:56,407 INFO L85 PathProgramCache]: Analyzing trace with hash -611206921, now seen corresponding path program 3 times [2024-06-28 02:48:56,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:56,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205175198] [2024-06-28 02:48:56,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:56,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:57,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:57,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:57,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205175198] [2024-06-28 02:48:57,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205175198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:57,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:57,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:48:57,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112559765] [2024-06-28 02:48:57,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:57,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:48:57,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:57,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:48:57,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:48:57,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:48:57,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 83 transitions, 588 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:57,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:57,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:48:57,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:57,716 INFO L124 PetriNetUnfolderBase]: 1994/3092 cut-off events. [2024-06-28 02:48:57,716 INFO L125 PetriNetUnfolderBase]: For 26168/26168 co-relation queries the response was YES. [2024-06-28 02:48:57,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13362 conditions, 3092 events. 1994/3092 cut-off events. For 26168/26168 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 15497 event pairs, 695 based on Foata normal form. 2/3092 useless extension candidates. Maximal degree in co-relation 13329. Up to 2923 conditions per place. [2024-06-28 02:48:57,731 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 83 selfloop transitions, 14 changer transitions 0/102 dead transitions. [2024-06-28 02:48:57,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 102 transitions, 830 flow [2024-06-28 02:48:57,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:48:57,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:48:57,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-28 02:48:57,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43521594684385384 [2024-06-28 02:48:57,732 INFO L175 Difference]: Start difference. First operand has 80 places, 83 transitions, 588 flow. Second operand 7 states and 131 transitions. [2024-06-28 02:48:57,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 102 transitions, 830 flow [2024-06-28 02:48:57,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 102 transitions, 768 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 02:48:57,746 INFO L231 Difference]: Finished difference. Result has 82 places, 83 transitions, 562 flow [2024-06-28 02:48:57,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=562, PETRI_PLACES=82, PETRI_TRANSITIONS=83} [2024-06-28 02:48:57,747 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 38 predicate places. [2024-06-28 02:48:57,747 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 83 transitions, 562 flow [2024-06-28 02:48:57,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:57,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:57,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:57,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:48:57,748 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)] === [2024-06-28 02:48:57,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:57,748 INFO L85 PathProgramCache]: Analyzing trace with hash -2127513948, now seen corresponding path program 3 times [2024-06-28 02:48:57,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:57,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854581103] [2024-06-28 02:48:57,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:57,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:58,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:58,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:58,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854581103] [2024-06-28 02:48:58,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854581103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:58,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:58,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:48:58,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633096836] [2024-06-28 02:48:58,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:58,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:48:58,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:58,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:48:58,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:48:58,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:48:58,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 562 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:58,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:58,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:48:58,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:58,992 INFO L124 PetriNetUnfolderBase]: 1984/3078 cut-off events. [2024-06-28 02:48:58,993 INFO L125 PetriNetUnfolderBase]: For 29011/29011 co-relation queries the response was YES. [2024-06-28 02:48:59,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13453 conditions, 3078 events. 1984/3078 cut-off events. For 29011/29011 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 15471 event pairs, 693 based on Foata normal form. 4/3080 useless extension candidates. Maximal degree in co-relation 13420. Up to 2873 conditions per place. [2024-06-28 02:48:59,010 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 80 selfloop transitions, 19 changer transitions 0/104 dead transitions. [2024-06-28 02:48:59,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 104 transitions, 816 flow [2024-06-28 02:48:59,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:48:59,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:48:59,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-28 02:48:59,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485049833887043 [2024-06-28 02:48:59,011 INFO L175 Difference]: Start difference. First operand has 82 places, 83 transitions, 562 flow. Second operand 7 states and 135 transitions. [2024-06-28 02:48:59,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 104 transitions, 816 flow [2024-06-28 02:48:59,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 104 transitions, 754 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 02:48:59,028 INFO L231 Difference]: Finished difference. Result has 82 places, 83 transitions, 546 flow [2024-06-28 02:48:59,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=546, PETRI_PLACES=82, PETRI_TRANSITIONS=83} [2024-06-28 02:48:59,029 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 38 predicate places. [2024-06-28 02:48:59,029 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 83 transitions, 546 flow [2024-06-28 02:48:59,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:59,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:59,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:59,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:48:59,029 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:48:59,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:59,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1140000622, now seen corresponding path program 1 times [2024-06-28 02:48:59,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:59,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694351567] [2024-06-28 02:48:59,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:59,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:59,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:59,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:59,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694351567] [2024-06-28 02:48:59,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694351567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:59,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:59,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:48:59,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366953756] [2024-06-28 02:48:59,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:59,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:48:59,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:59,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:48:59,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:48:59,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:48:59,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 546 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:59,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:59,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:48:59,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:00,148 INFO L124 PetriNetUnfolderBase]: 2402/3672 cut-off events. [2024-06-28 02:49:00,148 INFO L125 PetriNetUnfolderBase]: For 41918/41918 co-relation queries the response was YES. [2024-06-28 02:49:00,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16538 conditions, 3672 events. 2402/3672 cut-off events. For 41918/41918 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 18198 event pairs, 959 based on Foata normal form. 1/3671 useless extension candidates. Maximal degree in co-relation 16505. Up to 3525 conditions per place. [2024-06-28 02:49:00,166 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 71 selfloop transitions, 8 changer transitions 0/94 dead transitions. [2024-06-28 02:49:00,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 94 transitions, 744 flow [2024-06-28 02:49:00,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:49:00,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:49:00,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-06-28 02:49:00,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4325581395348837 [2024-06-28 02:49:00,167 INFO L175 Difference]: Start difference. First operand has 82 places, 83 transitions, 546 flow. Second operand 5 states and 93 transitions. [2024-06-28 02:49:00,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 94 transitions, 744 flow [2024-06-28 02:49:00,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 94 transitions, 680 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 02:49:00,188 INFO L231 Difference]: Finished difference. Result has 81 places, 86 transitions, 530 flow [2024-06-28 02:49:00,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=530, PETRI_PLACES=81, PETRI_TRANSITIONS=86} [2024-06-28 02:49:00,189 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 37 predicate places. [2024-06-28 02:49:00,189 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 86 transitions, 530 flow [2024-06-28 02:49:00,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:00,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:00,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:00,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:49:00,189 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)] === [2024-06-28 02:49:00,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:00,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1731601790, now seen corresponding path program 1 times [2024-06-28 02:49:00,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:00,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830552838] [2024-06-28 02:49:00,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:00,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:01,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:01,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:01,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830552838] [2024-06-28 02:49:01,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830552838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:01,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:01,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:49:01,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276419045] [2024-06-28 02:49:01,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:01,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:49:01,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:01,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:49:01,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:49:01,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:01,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 86 transitions, 530 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:01,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:01,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:01,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:02,168 INFO L124 PetriNetUnfolderBase]: 2091/3225 cut-off events. [2024-06-28 02:49:02,169 INFO L125 PetriNetUnfolderBase]: For 40929/40929 co-relation queries the response was YES. [2024-06-28 02:49:02,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15265 conditions, 3225 events. 2091/3225 cut-off events. For 40929/40929 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 16188 event pairs, 718 based on Foata normal form. 2/3225 useless extension candidates. Maximal degree in co-relation 15231. Up to 2994 conditions per place. [2024-06-28 02:49:02,185 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 98 selfloop transitions, 17 changer transitions 0/121 dead transitions. [2024-06-28 02:49:02,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 121 transitions, 874 flow [2024-06-28 02:49:02,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:02,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:02,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-28 02:49:02,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4563953488372093 [2024-06-28 02:49:02,186 INFO L175 Difference]: Start difference. First operand has 81 places, 86 transitions, 530 flow. Second operand 8 states and 157 transitions. [2024-06-28 02:49:02,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 121 transitions, 874 flow [2024-06-28 02:49:02,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 121 transitions, 848 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 02:49:02,207 INFO L231 Difference]: Finished difference. Result has 86 places, 89 transitions, 584 flow [2024-06-28 02:49:02,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=584, PETRI_PLACES=86, PETRI_TRANSITIONS=89} [2024-06-28 02:49:02,208 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 42 predicate places. [2024-06-28 02:49:02,208 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 89 transitions, 584 flow [2024-06-28 02:49:02,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:02,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:02,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:02,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:49:02,209 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:02,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:02,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1731721946, now seen corresponding path program 1 times [2024-06-28 02:49:02,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:02,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953608415] [2024-06-28 02:49:02,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:02,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:03,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:03,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:03,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953608415] [2024-06-28 02:49:03,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953608415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:03,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:03,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:49:03,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395377577] [2024-06-28 02:49:03,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:03,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:49:03,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:03,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:49:03,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:49:03,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:03,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 89 transitions, 584 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:03,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:03,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:03,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:03,837 INFO L124 PetriNetUnfolderBase]: 2136/3283 cut-off events. [2024-06-28 02:49:03,837 INFO L125 PetriNetUnfolderBase]: For 47164/47167 co-relation queries the response was YES. [2024-06-28 02:49:03,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16253 conditions, 3283 events. 2136/3283 cut-off events. For 47164/47167 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 16463 event pairs, 687 based on Foata normal form. 4/3281 useless extension candidates. Maximal degree in co-relation 16218. Up to 2886 conditions per place. [2024-06-28 02:49:03,851 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 83 selfloop transitions, 40 changer transitions 0/129 dead transitions. [2024-06-28 02:49:03,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 129 transitions, 1046 flow [2024-06-28 02:49:03,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:03,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:03,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-28 02:49:03,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796511627906977 [2024-06-28 02:49:03,853 INFO L175 Difference]: Start difference. First operand has 86 places, 89 transitions, 584 flow. Second operand 8 states and 165 transitions. [2024-06-28 02:49:03,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 129 transitions, 1046 flow [2024-06-28 02:49:03,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 129 transitions, 990 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 02:49:03,876 INFO L231 Difference]: Finished difference. Result has 88 places, 95 transitions, 686 flow [2024-06-28 02:49:03,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=686, PETRI_PLACES=88, PETRI_TRANSITIONS=95} [2024-06-28 02:49:03,877 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 44 predicate places. [2024-06-28 02:49:03,877 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 95 transitions, 686 flow [2024-06-28 02:49:03,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:03,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:03,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:03,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:49:03,877 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:03,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:03,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1731721760, now seen corresponding path program 2 times [2024-06-28 02:49:03,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:03,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116844922] [2024-06-28 02:49:03,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:03,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:04,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:04,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:04,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116844922] [2024-06-28 02:49:04,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116844922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:04,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:04,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:49:04,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572458816] [2024-06-28 02:49:04,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:04,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:49:04,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:04,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:49:04,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:49:05,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:05,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 95 transitions, 686 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:05,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:05,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:05,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:05,513 INFO L124 PetriNetUnfolderBase]: 2147/3300 cut-off events. [2024-06-28 02:49:05,513 INFO L125 PetriNetUnfolderBase]: For 53348/53351 co-relation queries the response was YES. [2024-06-28 02:49:05,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17114 conditions, 3300 events. 2147/3300 cut-off events. For 53348/53351 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 16575 event pairs, 722 based on Foata normal form. 4/3299 useless extension candidates. Maximal degree in co-relation 17078. Up to 2993 conditions per place. [2024-06-28 02:49:05,530 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 90 selfloop transitions, 36 changer transitions 0/132 dead transitions. [2024-06-28 02:49:05,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 132 transitions, 1162 flow [2024-06-28 02:49:05,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:05,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:05,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-28 02:49:05,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4680232558139535 [2024-06-28 02:49:05,532 INFO L175 Difference]: Start difference. First operand has 88 places, 95 transitions, 686 flow. Second operand 8 states and 161 transitions. [2024-06-28 02:49:05,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 132 transitions, 1162 flow [2024-06-28 02:49:05,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 132 transitions, 1098 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 02:49:05,559 INFO L231 Difference]: Finished difference. Result has 92 places, 101 transitions, 788 flow [2024-06-28 02:49:05,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=788, PETRI_PLACES=92, PETRI_TRANSITIONS=101} [2024-06-28 02:49:05,560 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 48 predicate places. [2024-06-28 02:49:05,560 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 101 transitions, 788 flow [2024-06-28 02:49:05,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:05,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:05,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:05,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:49:05,561 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:05,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:05,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1736370086, now seen corresponding path program 2 times [2024-06-28 02:49:05,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:05,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519910048] [2024-06-28 02:49:05,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:05,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:06,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:06,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:06,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519910048] [2024-06-28 02:49:06,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519910048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:06,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:06,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:49:06,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695979243] [2024-06-28 02:49:06,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:06,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:49:06,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:06,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:49:06,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:49:06,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:06,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 101 transitions, 788 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:06,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:06,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:06,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:07,194 INFO L124 PetriNetUnfolderBase]: 2169/3336 cut-off events. [2024-06-28 02:49:07,194 INFO L125 PetriNetUnfolderBase]: For 60648/60651 co-relation queries the response was YES. [2024-06-28 02:49:07,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17956 conditions, 3336 events. 2169/3336 cut-off events. For 60648/60651 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 16787 event pairs, 705 based on Foata normal form. 4/3334 useless extension candidates. Maximal degree in co-relation 17918. Up to 3030 conditions per place. [2024-06-28 02:49:07,212 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 98 selfloop transitions, 29 changer transitions 0/133 dead transitions. [2024-06-28 02:49:07,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 133 transitions, 1152 flow [2024-06-28 02:49:07,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:07,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:07,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-28 02:49:07,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45930232558139533 [2024-06-28 02:49:07,214 INFO L175 Difference]: Start difference. First operand has 92 places, 101 transitions, 788 flow. Second operand 8 states and 158 transitions. [2024-06-28 02:49:07,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 133 transitions, 1152 flow [2024-06-28 02:49:07,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 133 transitions, 1084 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 02:49:07,249 INFO L231 Difference]: Finished difference. Result has 96 places, 104 transitions, 824 flow [2024-06-28 02:49:07,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=824, PETRI_PLACES=96, PETRI_TRANSITIONS=104} [2024-06-28 02:49:07,249 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 52 predicate places. [2024-06-28 02:49:07,250 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 104 transitions, 824 flow [2024-06-28 02:49:07,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:07,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:07,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:07,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:49:07,250 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:07,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:07,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1736363390, now seen corresponding path program 3 times [2024-06-28 02:49:07,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:07,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581793654] [2024-06-28 02:49:07,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:07,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:08,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:08,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:08,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581793654] [2024-06-28 02:49:08,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581793654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:08,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:08,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:49:08,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386837768] [2024-06-28 02:49:08,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:08,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:49:08,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:08,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:49:08,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:49:08,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:08,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 104 transitions, 824 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:08,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:08,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:08,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:08,961 INFO L124 PetriNetUnfolderBase]: 2180/3353 cut-off events. [2024-06-28 02:49:08,961 INFO L125 PetriNetUnfolderBase]: For 65811/65814 co-relation queries the response was YES. [2024-06-28 02:49:08,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18336 conditions, 3353 events. 2180/3353 cut-off events. For 65811/65814 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 16871 event pairs, 722 based on Foata normal form. 4/3352 useless extension candidates. Maximal degree in co-relation 18296. Up to 3114 conditions per place. [2024-06-28 02:49:08,982 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 105 selfloop transitions, 22 changer transitions 0/133 dead transitions. [2024-06-28 02:49:08,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 133 transitions, 1184 flow [2024-06-28 02:49:08,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:08,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:08,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 02:49:08,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44476744186046513 [2024-06-28 02:49:08,984 INFO L175 Difference]: Start difference. First operand has 96 places, 104 transitions, 824 flow. Second operand 8 states and 153 transitions. [2024-06-28 02:49:08,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 133 transitions, 1184 flow [2024-06-28 02:49:09,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 133 transitions, 1110 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 02:49:09,024 INFO L231 Difference]: Finished difference. Result has 98 places, 107 transitions, 848 flow [2024-06-28 02:49:09,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=848, PETRI_PLACES=98, PETRI_TRANSITIONS=107} [2024-06-28 02:49:09,024 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 54 predicate places. [2024-06-28 02:49:09,025 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 107 transitions, 848 flow [2024-06-28 02:49:09,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:09,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:09,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:09,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:49:09,025 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:09,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:09,026 INFO L85 PathProgramCache]: Analyzing trace with hash 416133668, now seen corresponding path program 3 times [2024-06-28 02:49:09,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:09,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855106623] [2024-06-28 02:49:09,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:09,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:09,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:09,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:09,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855106623] [2024-06-28 02:49:09,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855106623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:09,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:09,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:49:09,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736506244] [2024-06-28 02:49:09,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:09,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:49:09,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:09,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:49:09,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:49:10,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:10,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 107 transitions, 848 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:10,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:10,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:10,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:10,607 INFO L124 PetriNetUnfolderBase]: 2202/3384 cut-off events. [2024-06-28 02:49:10,608 INFO L125 PetriNetUnfolderBase]: For 72219/72222 co-relation queries the response was YES. [2024-06-28 02:49:10,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18743 conditions, 3384 events. 2202/3384 cut-off events. For 72219/72222 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 17061 event pairs, 703 based on Foata normal form. 4/3382 useless extension candidates. Maximal degree in co-relation 18702. Up to 3051 conditions per place. [2024-06-28 02:49:10,626 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 100 selfloop transitions, 34 changer transitions 0/140 dead transitions. [2024-06-28 02:49:10,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 140 transitions, 1236 flow [2024-06-28 02:49:10,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:10,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:10,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-28 02:49:10,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4680232558139535 [2024-06-28 02:49:10,628 INFO L175 Difference]: Start difference. First operand has 98 places, 107 transitions, 848 flow. Second operand 8 states and 161 transitions. [2024-06-28 02:49:10,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 140 transitions, 1236 flow [2024-06-28 02:49:10,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 140 transitions, 1168 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 02:49:10,660 INFO L231 Difference]: Finished difference. Result has 100 places, 110 transitions, 900 flow [2024-06-28 02:49:10,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=900, PETRI_PLACES=100, PETRI_TRANSITIONS=110} [2024-06-28 02:49:10,661 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 56 predicate places. [2024-06-28 02:49:10,661 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 110 transitions, 900 flow [2024-06-28 02:49:10,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:10,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:10,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:10,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:49:10,662 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)] === [2024-06-28 02:49:10,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:10,662 INFO L85 PathProgramCache]: Analyzing trace with hash 878283116, now seen corresponding path program 4 times [2024-06-28 02:49:10,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:10,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591394998] [2024-06-28 02:49:10,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:10,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:11,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:11,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:11,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591394998] [2024-06-28 02:49:11,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591394998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:11,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:11,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:49:11,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841445812] [2024-06-28 02:49:11,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:11,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:49:11,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:11,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:49:11,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:49:11,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:11,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 110 transitions, 900 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:11,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:11,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:11,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:12,345 INFO L124 PetriNetUnfolderBase]: 2224/3421 cut-off events. [2024-06-28 02:49:12,346 INFO L125 PetriNetUnfolderBase]: For 79011/79011 co-relation queries the response was YES. [2024-06-28 02:49:12,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19325 conditions, 3421 events. 2224/3421 cut-off events. For 79011/79011 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 17281 event pairs, 718 based on Foata normal form. 4/3421 useless extension candidates. Maximal degree in co-relation 19283. Up to 3152 conditions per place. [2024-06-28 02:49:12,366 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 111 selfloop transitions, 22 changer transitions 0/139 dead transitions. [2024-06-28 02:49:12,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 139 transitions, 1280 flow [2024-06-28 02:49:12,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:12,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:12,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 02:49:12,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44476744186046513 [2024-06-28 02:49:12,367 INFO L175 Difference]: Start difference. First operand has 100 places, 110 transitions, 900 flow. Second operand 8 states and 153 transitions. [2024-06-28 02:49:12,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 139 transitions, 1280 flow [2024-06-28 02:49:12,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 139 transitions, 1190 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 02:49:12,414 INFO L231 Difference]: Finished difference. Result has 102 places, 113 transitions, 912 flow [2024-06-28 02:49:12,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=912, PETRI_PLACES=102, PETRI_TRANSITIONS=113} [2024-06-28 02:49:12,415 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 58 predicate places. [2024-06-28 02:49:12,415 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 113 transitions, 912 flow [2024-06-28 02:49:12,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:12,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:12,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:12,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:49:12,415 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:12,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:12,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1767544470, now seen corresponding path program 4 times [2024-06-28 02:49:12,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:12,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873740758] [2024-06-28 02:49:12,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:12,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:13,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:13,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:13,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873740758] [2024-06-28 02:49:13,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873740758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:13,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:13,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:49:13,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789354141] [2024-06-28 02:49:13,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:13,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:49:13,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:13,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:49:13,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:49:13,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:13,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 113 transitions, 912 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:13,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:13,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:13,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:14,071 INFO L124 PetriNetUnfolderBase]: 2230/3425 cut-off events. [2024-06-28 02:49:14,071 INFO L125 PetriNetUnfolderBase]: For 84998/84998 co-relation queries the response was YES. [2024-06-28 02:49:14,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19557 conditions, 3425 events. 2230/3425 cut-off events. For 84998/84998 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 17276 event pairs, 728 based on Foata normal form. 4/3425 useless extension candidates. Maximal degree in co-relation 19514. Up to 3202 conditions per place. [2024-06-28 02:49:14,091 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 114 selfloop transitions, 19 changer transitions 0/139 dead transitions. [2024-06-28 02:49:14,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 139 transitions, 1278 flow [2024-06-28 02:49:14,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:14,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:14,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 02:49:14,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331395348837209 [2024-06-28 02:49:14,093 INFO L175 Difference]: Start difference. First operand has 102 places, 113 transitions, 912 flow. Second operand 8 states and 149 transitions. [2024-06-28 02:49:14,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 139 transitions, 1278 flow [2024-06-28 02:49:14,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 139 transitions, 1188 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 02:49:14,184 INFO L231 Difference]: Finished difference. Result has 104 places, 116 transitions, 918 flow [2024-06-28 02:49:14,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=918, PETRI_PLACES=104, PETRI_TRANSITIONS=116} [2024-06-28 02:49:14,185 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 60 predicate places. [2024-06-28 02:49:14,185 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 116 transitions, 918 flow [2024-06-28 02:49:14,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:14,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:14,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:14,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:49:14,185 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:14,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:14,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1759263564, now seen corresponding path program 5 times [2024-06-28 02:49:14,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:14,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089423098] [2024-06-28 02:49:14,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:14,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:15,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:15,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:15,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089423098] [2024-06-28 02:49:15,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089423098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:15,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:15,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:49:15,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618946870] [2024-06-28 02:49:15,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:15,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:49:15,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:15,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:49:15,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:49:15,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:15,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 116 transitions, 918 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:15,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:15,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:15,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:15,802 INFO L124 PetriNetUnfolderBase]: 2252/3462 cut-off events. [2024-06-28 02:49:15,802 INFO L125 PetriNetUnfolderBase]: For 92954/92954 co-relation queries the response was YES. [2024-06-28 02:49:15,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20289 conditions, 3462 events. 2252/3462 cut-off events. For 92954/92954 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 17514 event pairs, 723 based on Foata normal form. 4/3462 useless extension candidates. Maximal degree in co-relation 20245. Up to 3220 conditions per place. [2024-06-28 02:49:15,823 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 121 selfloop transitions, 17 changer transitions 0/144 dead transitions. [2024-06-28 02:49:15,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 144 transitions, 1310 flow [2024-06-28 02:49:15,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:15,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:15,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 02:49:15,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436046511627907 [2024-06-28 02:49:15,824 INFO L175 Difference]: Start difference. First operand has 104 places, 116 transitions, 918 flow. Second operand 8 states and 150 transitions. [2024-06-28 02:49:15,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 144 transitions, 1310 flow [2024-06-28 02:49:15,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 144 transitions, 1238 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 02:49:15,881 INFO L231 Difference]: Finished difference. Result has 106 places, 119 transitions, 944 flow [2024-06-28 02:49:15,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=944, PETRI_PLACES=106, PETRI_TRANSITIONS=119} [2024-06-28 02:49:15,882 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 62 predicate places. [2024-06-28 02:49:15,882 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 119 transitions, 944 flow [2024-06-28 02:49:15,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:15,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:15,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:15,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:49:15,882 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)] === [2024-06-28 02:49:15,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:15,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1767544284, now seen corresponding path program 6 times [2024-06-28 02:49:15,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:15,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032611211] [2024-06-28 02:49:15,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:15,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:16,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:16,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:16,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032611211] [2024-06-28 02:49:16,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032611211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:16,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:16,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:49:16,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312719088] [2024-06-28 02:49:16,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:16,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:49:16,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:16,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:49:16,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:49:16,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:16,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 119 transitions, 944 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:16,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:16,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:16,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:17,400 INFO L124 PetriNetUnfolderBase]: 2242/3448 cut-off events. [2024-06-28 02:49:17,400 INFO L125 PetriNetUnfolderBase]: For 98892/98892 co-relation queries the response was YES. [2024-06-28 02:49:17,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20413 conditions, 3448 events. 2242/3448 cut-off events. For 98892/98892 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 17454 event pairs, 716 based on Foata normal form. 4/3448 useless extension candidates. Maximal degree in co-relation 20368. Up to 3129 conditions per place. [2024-06-28 02:49:17,422 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 109 selfloop transitions, 30 changer transitions 0/145 dead transitions. [2024-06-28 02:49:17,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 145 transitions, 1292 flow [2024-06-28 02:49:17,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:17,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:17,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 02:49:17,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476744186046512 [2024-06-28 02:49:17,423 INFO L175 Difference]: Start difference. First operand has 106 places, 119 transitions, 944 flow. Second operand 8 states and 154 transitions. [2024-06-28 02:49:17,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 145 transitions, 1292 flow [2024-06-28 02:49:17,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 145 transitions, 1210 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 02:49:17,489 INFO L231 Difference]: Finished difference. Result has 108 places, 119 transitions, 930 flow [2024-06-28 02:49:17,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=930, PETRI_PLACES=108, PETRI_TRANSITIONS=119} [2024-06-28 02:49:17,490 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 64 predicate places. [2024-06-28 02:49:17,490 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 119 transitions, 930 flow [2024-06-28 02:49:17,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:17,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:17,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:17,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:49:17,491 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)] === [2024-06-28 02:49:17,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:17,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1758955734, now seen corresponding path program 1 times [2024-06-28 02:49:17,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:17,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261793707] [2024-06-28 02:49:17,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:17,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:18,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:18,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:18,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261793707] [2024-06-28 02:49:18,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261793707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:18,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:18,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:49:18,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295354507] [2024-06-28 02:49:18,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:18,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:49:18,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:18,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:49:18,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:49:18,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:49:18,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 119 transitions, 930 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:18,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:18,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:49:18,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:19,269 INFO L124 PetriNetUnfolderBase]: 2660/4016 cut-off events. [2024-06-28 02:49:19,269 INFO L125 PetriNetUnfolderBase]: For 122037/122037 co-relation queries the response was YES. [2024-06-28 02:49:19,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23666 conditions, 4016 events. 2660/4016 cut-off events. For 122037/122037 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 19621 event pairs, 882 based on Foata normal form. 4/4016 useless extension candidates. Maximal degree in co-relation 23620. Up to 3809 conditions per place. [2024-06-28 02:49:19,293 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 125 selfloop transitions, 18 changer transitions 0/148 dead transitions. [2024-06-28 02:49:19,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 148 transitions, 1336 flow [2024-06-28 02:49:19,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:19,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:19,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 02:49:19,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4127906976744186 [2024-06-28 02:49:19,294 INFO L175 Difference]: Start difference. First operand has 108 places, 119 transitions, 930 flow. Second operand 8 states and 142 transitions. [2024-06-28 02:49:19,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 148 transitions, 1336 flow [2024-06-28 02:49:19,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 148 transitions, 1218 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:19,362 INFO L231 Difference]: Finished difference. Result has 110 places, 124 transitions, 925 flow [2024-06-28 02:49:19,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=925, PETRI_PLACES=110, PETRI_TRANSITIONS=124} [2024-06-28 02:49:19,363 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 66 predicate places. [2024-06-28 02:49:19,363 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 124 transitions, 925 flow [2024-06-28 02:49:19,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:19,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:19,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:19,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:49:19,363 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)] === [2024-06-28 02:49:19,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:19,363 INFO L85 PathProgramCache]: Analyzing trace with hash -980279314, now seen corresponding path program 1 times [2024-06-28 02:49:19,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:19,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515516048] [2024-06-28 02:49:19,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:19,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:19,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:19,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:19,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515516048] [2024-06-28 02:49:19,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515516048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:19,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:19,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:49:19,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620617655] [2024-06-28 02:49:19,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:19,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:49:19,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:19,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:49:19,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:49:20,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:20,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 124 transitions, 925 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:20,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:20,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:20,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:20,651 INFO L124 PetriNetUnfolderBase]: 2542/3899 cut-off events. [2024-06-28 02:49:20,651 INFO L125 PetriNetUnfolderBase]: For 126919/126919 co-relation queries the response was YES. [2024-06-28 02:49:20,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23109 conditions, 3899 events. 2542/3899 cut-off events. For 126919/126919 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 19344 event pairs, 935 based on Foata normal form. 3/3900 useless extension candidates. Maximal degree in co-relation 23061. Up to 3687 conditions per place. [2024-06-28 02:49:20,675 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 101 selfloop transitions, 11 changer transitions 0/138 dead transitions. [2024-06-28 02:49:20,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 138 transitions, 1201 flow [2024-06-28 02:49:20,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:49:20,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:49:20,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-28 02:49:20,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42248062015503873 [2024-06-28 02:49:20,677 INFO L175 Difference]: Start difference. First operand has 110 places, 124 transitions, 925 flow. Second operand 6 states and 109 transitions. [2024-06-28 02:49:20,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 138 transitions, 1201 flow [2024-06-28 02:49:20,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 138 transitions, 1136 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 02:49:20,755 INFO L231 Difference]: Finished difference. Result has 111 places, 127 transitions, 920 flow [2024-06-28 02:49:20,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=920, PETRI_PLACES=111, PETRI_TRANSITIONS=127} [2024-06-28 02:49:20,756 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 67 predicate places. [2024-06-28 02:49:20,756 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 127 transitions, 920 flow [2024-06-28 02:49:20,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:20,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:20,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:20,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:49:20,756 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:20,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:20,757 INFO L85 PathProgramCache]: Analyzing trace with hash 2139958656, now seen corresponding path program 1 times [2024-06-28 02:49:20,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:20,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765163865] [2024-06-28 02:49:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:20,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:22,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:22,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:22,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765163865] [2024-06-28 02:49:22,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765163865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:22,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:22,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:22,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953222200] [2024-06-28 02:49:22,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:22,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:22,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:22,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:22,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:22,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:22,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 127 transitions, 920 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:22,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:22,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:22,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:22,988 INFO L124 PetriNetUnfolderBase]: 2531/3870 cut-off events. [2024-06-28 02:49:22,988 INFO L125 PetriNetUnfolderBase]: For 133478/133478 co-relation queries the response was YES. [2024-06-28 02:49:22,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23920 conditions, 3870 events. 2531/3870 cut-off events. For 133478/133478 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 19685 event pairs, 793 based on Foata normal form. 2/3859 useless extension candidates. Maximal degree in co-relation 23871. Up to 3578 conditions per place. [2024-06-28 02:49:23,010 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 145 selfloop transitions, 26 changer transitions 0/178 dead transitions. [2024-06-28 02:49:23,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 178 transitions, 1580 flow [2024-06-28 02:49:23,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:23,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:23,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-28 02:49:23,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45813953488372094 [2024-06-28 02:49:23,012 INFO L175 Difference]: Start difference. First operand has 111 places, 127 transitions, 920 flow. Second operand 10 states and 197 transitions. [2024-06-28 02:49:23,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 178 transitions, 1580 flow [2024-06-28 02:49:23,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 178 transitions, 1542 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 02:49:23,076 INFO L231 Difference]: Finished difference. Result has 117 places, 133 transitions, 1048 flow [2024-06-28 02:49:23,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1048, PETRI_PLACES=117, PETRI_TRANSITIONS=133} [2024-06-28 02:49:23,077 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 73 predicate places. [2024-06-28 02:49:23,077 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 133 transitions, 1048 flow [2024-06-28 02:49:23,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:23,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:23,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:23,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:49:23,078 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:23,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:23,078 INFO L85 PathProgramCache]: Analyzing trace with hash 2140048866, now seen corresponding path program 2 times [2024-06-28 02:49:23,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:23,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152075699] [2024-06-28 02:49:23,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:23,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:24,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:24,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:24,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152075699] [2024-06-28 02:49:24,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152075699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:24,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:24,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:24,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405108930] [2024-06-28 02:49:24,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:24,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:24,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:24,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:24,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:24,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:24,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 133 transitions, 1048 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:24,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:24,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:24,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:25,414 INFO L124 PetriNetUnfolderBase]: 2526/3863 cut-off events. [2024-06-28 02:49:25,414 INFO L125 PetriNetUnfolderBase]: For 143512/143512 co-relation queries the response was YES. [2024-06-28 02:49:25,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24544 conditions, 3863 events. 2526/3863 cut-off events. For 143512/143512 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 19645 event pairs, 793 based on Foata normal form. 2/3852 useless extension candidates. Maximal degree in co-relation 24494. Up to 3597 conditions per place. [2024-06-28 02:49:25,440 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 142 selfloop transitions, 20 changer transitions 0/169 dead transitions. [2024-06-28 02:49:25,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 169 transitions, 1464 flow [2024-06-28 02:49:25,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:25,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:25,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 02:49:25,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2024-06-28 02:49:25,441 INFO L175 Difference]: Start difference. First operand has 117 places, 133 transitions, 1048 flow. Second operand 9 states and 174 transitions. [2024-06-28 02:49:25,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 169 transitions, 1464 flow [2024-06-28 02:49:25,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 169 transitions, 1358 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-28 02:49:25,505 INFO L231 Difference]: Finished difference. Result has 120 places, 133 transitions, 990 flow [2024-06-28 02:49:25,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=990, PETRI_PLACES=120, PETRI_TRANSITIONS=133} [2024-06-28 02:49:25,506 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 76 predicate places. [2024-06-28 02:49:25,506 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 133 transitions, 990 flow [2024-06-28 02:49:25,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:25,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:25,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:25,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:49:25,507 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:25,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:25,507 INFO L85 PathProgramCache]: Analyzing trace with hash 2140049021, now seen corresponding path program 1 times [2024-06-28 02:49:25,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:25,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191856161] [2024-06-28 02:49:25,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:25,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:26,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:26,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:26,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191856161] [2024-06-28 02:49:26,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191856161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:26,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:26,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:26,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667328921] [2024-06-28 02:49:26,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:26,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:26,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:26,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:26,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:26,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:26,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 133 transitions, 990 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:26,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:26,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:26,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:27,687 INFO L124 PetriNetUnfolderBase]: 2550/3896 cut-off events. [2024-06-28 02:49:27,687 INFO L125 PetriNetUnfolderBase]: For 154532/154532 co-relation queries the response was YES. [2024-06-28 02:49:27,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24997 conditions, 3896 events. 2550/3896 cut-off events. For 154532/154532 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 19820 event pairs, 782 based on Foata normal form. 4/3884 useless extension candidates. Maximal degree in co-relation 24945. Up to 3622 conditions per place. [2024-06-28 02:49:27,712 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 146 selfloop transitions, 20 changer transitions 0/173 dead transitions. [2024-06-28 02:49:27,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 173 transitions, 1464 flow [2024-06-28 02:49:27,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:27,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:27,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-28 02:49:27,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45219638242894056 [2024-06-28 02:49:27,713 INFO L175 Difference]: Start difference. First operand has 120 places, 133 transitions, 990 flow. Second operand 9 states and 175 transitions. [2024-06-28 02:49:27,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 173 transitions, 1464 flow [2024-06-28 02:49:27,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 173 transitions, 1416 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 02:49:27,784 INFO L231 Difference]: Finished difference. Result has 121 places, 136 transitions, 1042 flow [2024-06-28 02:49:27,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1042, PETRI_PLACES=121, PETRI_TRANSITIONS=136} [2024-06-28 02:49:27,785 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 77 predicate places. [2024-06-28 02:49:27,785 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 136 transitions, 1042 flow [2024-06-28 02:49:27,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:27,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:27,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:27,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:49:27,786 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:27,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:27,786 INFO L85 PathProgramCache]: Analyzing trace with hash 2143768091, now seen corresponding path program 2 times [2024-06-28 02:49:27,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:27,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411664823] [2024-06-28 02:49:27,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:27,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:28,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:28,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:28,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411664823] [2024-06-28 02:49:28,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411664823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:28,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:28,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:28,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781086984] [2024-06-28 02:49:28,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:28,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:28,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:28,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:28,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:29,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:29,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 136 transitions, 1042 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:29,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:29,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:29,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:29,687 INFO L124 PetriNetUnfolderBase]: 2643/4037 cut-off events. [2024-06-28 02:49:29,687 INFO L125 PetriNetUnfolderBase]: For 170172/170175 co-relation queries the response was YES. [2024-06-28 02:49:29,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26767 conditions, 4037 events. 2643/4037 cut-off events. For 170172/170175 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 20648 event pairs, 703 based on Foata normal form. 4/4028 useless extension candidates. Maximal degree in co-relation 26714. Up to 3330 conditions per place. [2024-06-28 02:49:29,715 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 111 selfloop transitions, 69 changer transitions 0/187 dead transitions. [2024-06-28 02:49:29,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 187 transitions, 1902 flow [2024-06-28 02:49:29,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:29,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:29,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 190 transitions. [2024-06-28 02:49:29,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4909560723514212 [2024-06-28 02:49:29,716 INFO L175 Difference]: Start difference. First operand has 121 places, 136 transitions, 1042 flow. Second operand 9 states and 190 transitions. [2024-06-28 02:49:29,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 187 transitions, 1902 flow [2024-06-28 02:49:29,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 187 transitions, 1826 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:29,797 INFO L231 Difference]: Finished difference. Result has 123 places, 145 transitions, 1274 flow [2024-06-28 02:49:29,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1274, PETRI_PLACES=123, PETRI_TRANSITIONS=145} [2024-06-28 02:49:29,798 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 79 predicate places. [2024-06-28 02:49:29,798 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 145 transitions, 1274 flow [2024-06-28 02:49:29,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:29,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:29,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:29,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:49:29,798 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:29,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:29,798 INFO L85 PathProgramCache]: Analyzing trace with hash 2143767936, now seen corresponding path program 3 times [2024-06-28 02:49:29,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:29,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328087970] [2024-06-28 02:49:29,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:29,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:31,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:31,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:31,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328087970] [2024-06-28 02:49:31,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328087970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:31,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:31,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:31,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400921374] [2024-06-28 02:49:31,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:31,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:31,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:31,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:31,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:31,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:31,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 145 transitions, 1274 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:31,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:31,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:31,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:31,940 INFO L124 PetriNetUnfolderBase]: 2634/4027 cut-off events. [2024-06-28 02:49:31,940 INFO L125 PetriNetUnfolderBase]: For 181117/181120 co-relation queries the response was YES. [2024-06-28 02:49:31,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27521 conditions, 4027 events. 2634/4027 cut-off events. For 181117/181120 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 20604 event pairs, 826 based on Foata normal form. 4/4024 useless extension candidates. Maximal degree in co-relation 27467. Up to 3678 conditions per place. [2024-06-28 02:49:31,967 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 132 selfloop transitions, 42 changer transitions 0/181 dead transitions. [2024-06-28 02:49:31,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 181 transitions, 1766 flow [2024-06-28 02:49:31,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:31,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:31,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-28 02:49:31,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45478036175710596 [2024-06-28 02:49:31,968 INFO L175 Difference]: Start difference. First operand has 123 places, 145 transitions, 1274 flow. Second operand 9 states and 176 transitions. [2024-06-28 02:49:31,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 181 transitions, 1766 flow [2024-06-28 02:49:32,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 181 transitions, 1657 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-28 02:49:32,054 INFO L231 Difference]: Finished difference. Result has 128 places, 148 transitions, 1323 flow [2024-06-28 02:49:32,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1323, PETRI_PLACES=128, PETRI_TRANSITIONS=148} [2024-06-28 02:49:32,055 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 84 predicate places. [2024-06-28 02:49:32,055 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 148 transitions, 1323 flow [2024-06-28 02:49:32,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:32,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:32,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:32,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:49:32,055 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:32,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:32,056 INFO L85 PathProgramCache]: Analyzing trace with hash -128647813, now seen corresponding path program 3 times [2024-06-28 02:49:32,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:32,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764054233] [2024-06-28 02:49:32,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:32,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:33,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:33,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:33,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764054233] [2024-06-28 02:49:33,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764054233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:33,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:33,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:33,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672508068] [2024-06-28 02:49:33,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:33,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:33,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:33,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:33,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:33,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:33,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 148 transitions, 1323 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:33,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:33,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:33,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:33,876 INFO L124 PetriNetUnfolderBase]: 2623/4008 cut-off events. [2024-06-28 02:49:33,876 INFO L125 PetriNetUnfolderBase]: For 190872/190875 co-relation queries the response was YES. [2024-06-28 02:49:33,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27982 conditions, 4008 events. 2623/4008 cut-off events. For 190872/190875 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 20494 event pairs, 730 based on Foata normal form. 4/3998 useless extension candidates. Maximal degree in co-relation 27926. Up to 3320 conditions per place. [2024-06-28 02:49:33,905 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 110 selfloop transitions, 70 changer transitions 0/187 dead transitions. [2024-06-28 02:49:33,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 187 transitions, 1911 flow [2024-06-28 02:49:33,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:33,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:33,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 186 transitions. [2024-06-28 02:49:33,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806201550387597 [2024-06-28 02:49:33,907 INFO L175 Difference]: Start difference. First operand has 128 places, 148 transitions, 1323 flow. Second operand 9 states and 186 transitions. [2024-06-28 02:49:33,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 187 transitions, 1911 flow [2024-06-28 02:49:34,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 187 transitions, 1749 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:34,031 INFO L231 Difference]: Finished difference. Result has 130 places, 148 transitions, 1309 flow [2024-06-28 02:49:34,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1309, PETRI_PLACES=130, PETRI_TRANSITIONS=148} [2024-06-28 02:49:34,032 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 86 predicate places. [2024-06-28 02:49:34,032 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 148 transitions, 1309 flow [2024-06-28 02:49:34,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:34,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:34,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:34,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:49:34,032 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:34,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:34,032 INFO L85 PathProgramCache]: Analyzing trace with hash -2127478107, now seen corresponding path program 4 times [2024-06-28 02:49:34,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:34,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250667957] [2024-06-28 02:49:34,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:34,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:35,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:35,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:35,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250667957] [2024-06-28 02:49:35,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250667957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:35,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:35,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:35,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767744425] [2024-06-28 02:49:35,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:35,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:35,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:35,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:35,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:35,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:35,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 148 transitions, 1309 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:35,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:35,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:35,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:35,838 INFO L124 PetriNetUnfolderBase]: 2678/4090 cut-off events. [2024-06-28 02:49:35,838 INFO L125 PetriNetUnfolderBase]: For 205123/205126 co-relation queries the response was YES. [2024-06-28 02:49:35,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29009 conditions, 4090 events. 2678/4090 cut-off events. For 205123/205126 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 20965 event pairs, 795 based on Foata normal form. 4/4084 useless extension candidates. Maximal degree in co-relation 28952. Up to 3660 conditions per place. [2024-06-28 02:49:35,868 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 140 selfloop transitions, 44 changer transitions 0/191 dead transitions. [2024-06-28 02:49:35,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 191 transitions, 2021 flow [2024-06-28 02:49:35,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:35,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:35,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-28 02:49:35,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702842377260982 [2024-06-28 02:49:35,869 INFO L175 Difference]: Start difference. First operand has 130 places, 148 transitions, 1309 flow. Second operand 9 states and 182 transitions. [2024-06-28 02:49:35,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 191 transitions, 2021 flow [2024-06-28 02:49:36,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 191 transitions, 1861 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 02:49:36,029 INFO L231 Difference]: Finished difference. Result has 131 places, 154 transitions, 1367 flow [2024-06-28 02:49:36,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1367, PETRI_PLACES=131, PETRI_TRANSITIONS=154} [2024-06-28 02:49:36,029 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 87 predicate places. [2024-06-28 02:49:36,029 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 154 transitions, 1367 flow [2024-06-28 02:49:36,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:36,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:36,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:36,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:49:36,030 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:36,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:36,030 INFO L85 PathProgramCache]: Analyzing trace with hash -2127270717, now seen corresponding path program 5 times [2024-06-28 02:49:36,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:36,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391754995] [2024-06-28 02:49:36,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:36,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:36,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:36,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:36,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391754995] [2024-06-28 02:49:36,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391754995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:36,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:36,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:36,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399951226] [2024-06-28 02:49:36,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:36,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:36,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:36,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:36,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:37,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:37,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 154 transitions, 1367 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:37,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:37,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:37,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:37,879 INFO L124 PetriNetUnfolderBase]: 2718/4152 cut-off events. [2024-06-28 02:49:37,879 INFO L125 PetriNetUnfolderBase]: For 218115/218118 co-relation queries the response was YES. [2024-06-28 02:49:37,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29729 conditions, 4152 events. 2718/4152 cut-off events. For 218115/218118 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 21407 event pairs, 747 based on Foata normal form. 4/4143 useless extension candidates. Maximal degree in co-relation 29671. Up to 3781 conditions per place. [2024-06-28 02:49:37,913 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 150 selfloop transitions, 34 changer transitions 0/191 dead transitions. [2024-06-28 02:49:37,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 191 transitions, 1885 flow [2024-06-28 02:49:37,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:37,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:37,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-28 02:49:37,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45478036175710596 [2024-06-28 02:49:37,915 INFO L175 Difference]: Start difference. First operand has 131 places, 154 transitions, 1367 flow. Second operand 9 states and 176 transitions. [2024-06-28 02:49:37,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 191 transitions, 1885 flow [2024-06-28 02:49:38,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 191 transitions, 1786 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-28 02:49:38,019 INFO L231 Difference]: Finished difference. Result has 135 places, 157 transitions, 1408 flow [2024-06-28 02:49:38,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1276, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1408, PETRI_PLACES=135, PETRI_TRANSITIONS=157} [2024-06-28 02:49:38,020 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 91 predicate places. [2024-06-28 02:49:38,020 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 157 transitions, 1408 flow [2024-06-28 02:49:38,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:38,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:38,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:38,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:49:38,020 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:38,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:38,021 INFO L85 PathProgramCache]: Analyzing trace with hash -2127478262, now seen corresponding path program 4 times [2024-06-28 02:49:38,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:38,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313251984] [2024-06-28 02:49:38,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:38,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:39,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:39,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:39,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313251984] [2024-06-28 02:49:39,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313251984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:39,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:39,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:39,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299410927] [2024-06-28 02:49:39,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:39,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:39,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:39,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:39,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:39,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:39,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 157 transitions, 1408 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:39,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:39,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:39,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:40,025 INFO L124 PetriNetUnfolderBase]: 2695/4116 cut-off events. [2024-06-28 02:49:40,026 INFO L125 PetriNetUnfolderBase]: For 225287/225290 co-relation queries the response was YES. [2024-06-28 02:49:40,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29690 conditions, 4116 events. 2695/4116 cut-off events. For 225287/225290 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 21128 event pairs, 841 based on Foata normal form. 4/4113 useless extension candidates. Maximal degree in co-relation 29630. Up to 3842 conditions per place. [2024-06-28 02:49:40,057 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 158 selfloop transitions, 25 changer transitions 0/190 dead transitions. [2024-06-28 02:49:40,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 190 transitions, 1916 flow [2024-06-28 02:49:40,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:40,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:40,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 02:49:40,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392764857881137 [2024-06-28 02:49:40,058 INFO L175 Difference]: Start difference. First operand has 135 places, 157 transitions, 1408 flow. Second operand 9 states and 170 transitions. [2024-06-28 02:49:40,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 190 transitions, 1916 flow [2024-06-28 02:49:40,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 190 transitions, 1820 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:40,194 INFO L231 Difference]: Finished difference. Result has 137 places, 160 transitions, 1442 flow [2024-06-28 02:49:40,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1312, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1442, PETRI_PLACES=137, PETRI_TRANSITIONS=160} [2024-06-28 02:49:40,195 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 93 predicate places. [2024-06-28 02:49:40,195 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 160 transitions, 1442 flow [2024-06-28 02:49:40,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:40,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:40,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:40,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:49:40,195 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:40,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:40,196 INFO L85 PathProgramCache]: Analyzing trace with hash -2007303095, now seen corresponding path program 6 times [2024-06-28 02:49:40,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:40,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675469718] [2024-06-28 02:49:40,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:40,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:41,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:41,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:41,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675469718] [2024-06-28 02:49:41,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675469718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:41,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:41,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:41,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491514605] [2024-06-28 02:49:41,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:41,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:41,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:41,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:41,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:41,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:41,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 160 transitions, 1442 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:41,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:41,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:41,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:42,187 INFO L124 PetriNetUnfolderBase]: 2703/4131 cut-off events. [2024-06-28 02:49:42,187 INFO L125 PetriNetUnfolderBase]: For 238499/238502 co-relation queries the response was YES. [2024-06-28 02:49:42,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30298 conditions, 4131 events. 2703/4131 cut-off events. For 238499/238502 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 21304 event pairs, 733 based on Foata normal form. 4/4122 useless extension candidates. Maximal degree in co-relation 30237. Up to 3683 conditions per place. [2024-06-28 02:49:42,220 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 142 selfloop transitions, 46 changer transitions 0/195 dead transitions. [2024-06-28 02:49:42,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 195 transitions, 1914 flow [2024-06-28 02:49:42,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:42,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:42,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-28 02:49:42,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46770025839793283 [2024-06-28 02:49:42,221 INFO L175 Difference]: Start difference. First operand has 137 places, 160 transitions, 1442 flow. Second operand 9 states and 181 transitions. [2024-06-28 02:49:42,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 195 transitions, 1914 flow [2024-06-28 02:49:42,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 195 transitions, 1780 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:42,398 INFO L231 Difference]: Finished difference. Result has 139 places, 160 transitions, 1408 flow [2024-06-28 02:49:42,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1308, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1408, PETRI_PLACES=139, PETRI_TRANSITIONS=160} [2024-06-28 02:49:42,398 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 95 predicate places. [2024-06-28 02:49:42,398 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 160 transitions, 1408 flow [2024-06-28 02:49:42,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:42,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:42,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:42,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:49:42,399 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)] === [2024-06-28 02:49:42,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:42,399 INFO L85 PathProgramCache]: Analyzing trace with hash -212065999, now seen corresponding path program 1 times [2024-06-28 02:49:42,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:42,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929098417] [2024-06-28 02:49:42,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:42,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:43,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:43,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:43,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929098417] [2024-06-28 02:49:43,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929098417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:43,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:43,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:49:43,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703059273] [2024-06-28 02:49:43,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:43,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:49:43,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:43,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:49:43,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:49:43,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:43,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 160 transitions, 1408 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:43,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:43,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:43,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:43,794 INFO L124 PetriNetUnfolderBase]: 2733/4170 cut-off events. [2024-06-28 02:49:43,794 INFO L125 PetriNetUnfolderBase]: For 252368/252384 co-relation queries the response was YES. [2024-06-28 02:49:43,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30631 conditions, 4170 events. 2733/4170 cut-off events. For 252368/252384 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 20911 event pairs, 916 based on Foata normal form. 5/4140 useless extension candidates. Maximal degree in co-relation 30569. Up to 3918 conditions per place. [2024-06-28 02:49:43,827 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 136 selfloop transitions, 16 changer transitions 0/182 dead transitions. [2024-06-28 02:49:43,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 182 transitions, 1878 flow [2024-06-28 02:49:43,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:49:43,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:49:43,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-06-28 02:49:43,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2024-06-28 02:49:43,828 INFO L175 Difference]: Start difference. First operand has 139 places, 160 transitions, 1408 flow. Second operand 6 states and 116 transitions. [2024-06-28 02:49:43,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 182 transitions, 1878 flow [2024-06-28 02:49:43,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 182 transitions, 1768 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 02:49:43,970 INFO L231 Difference]: Finished difference. Result has 137 places, 166 transitions, 1394 flow [2024-06-28 02:49:43,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1394, PETRI_PLACES=137, PETRI_TRANSITIONS=166} [2024-06-28 02:49:43,970 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 93 predicate places. [2024-06-28 02:49:43,970 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 166 transitions, 1394 flow [2024-06-28 02:49:43,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:43,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:43,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:43,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:49:43,970 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:43,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:43,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1306936397, now seen corresponding path program 1 times [2024-06-28 02:49:43,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:43,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921014028] [2024-06-28 02:49:43,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:43,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:44,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:44,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:44,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921014028] [2024-06-28 02:49:44,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921014028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:44,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:44,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:44,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807089419] [2024-06-28 02:49:44,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:44,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:44,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:44,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:44,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:44,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:49:44,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 166 transitions, 1394 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:44,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:44,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:49:44,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:45,724 INFO L124 PetriNetUnfolderBase]: 2938/4411 cut-off events. [2024-06-28 02:49:45,724 INFO L125 PetriNetUnfolderBase]: For 266747/266747 co-relation queries the response was YES. [2024-06-28 02:49:45,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32511 conditions, 4411 events. 2938/4411 cut-off events. For 266747/266747 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 21659 event pairs, 880 based on Foata normal form. 2/4409 useless extension candidates. Maximal degree in co-relation 32448. Up to 4194 conditions per place. [2024-06-28 02:49:45,758 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 167 selfloop transitions, 22 changer transitions 0/196 dead transitions. [2024-06-28 02:49:45,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 196 transitions, 1921 flow [2024-06-28 02:49:45,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:45,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:45,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 02:49:45,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41569767441860467 [2024-06-28 02:49:45,759 INFO L175 Difference]: Start difference. First operand has 137 places, 166 transitions, 1394 flow. Second operand 8 states and 143 transitions. [2024-06-28 02:49:45,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 196 transitions, 1921 flow [2024-06-28 02:49:45,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 196 transitions, 1893 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-28 02:49:45,984 INFO L231 Difference]: Finished difference. Result has 143 places, 172 transitions, 1521 flow [2024-06-28 02:49:45,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1366, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1521, PETRI_PLACES=143, PETRI_TRANSITIONS=172} [2024-06-28 02:49:45,984 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 99 predicate places. [2024-06-28 02:49:45,985 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 172 transitions, 1521 flow [2024-06-28 02:49:45,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:45,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:45,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:45,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:49:45,985 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:45,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:45,986 INFO L85 PathProgramCache]: Analyzing trace with hash 899198147, now seen corresponding path program 7 times [2024-06-28 02:49:45,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:45,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858390347] [2024-06-28 02:49:45,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:45,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:46,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:46,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:46,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858390347] [2024-06-28 02:49:46,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858390347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:46,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:46,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:46,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435597359] [2024-06-28 02:49:46,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:46,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:46,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:46,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:46,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:46,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:46,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 172 transitions, 1521 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:46,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:46,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:46,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:47,729 INFO L124 PetriNetUnfolderBase]: 2744/4188 cut-off events. [2024-06-28 02:49:47,729 INFO L125 PetriNetUnfolderBase]: For 276198/276198 co-relation queries the response was YES. [2024-06-28 02:49:47,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32040 conditions, 4188 events. 2744/4188 cut-off events. For 276198/276198 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 21618 event pairs, 770 based on Foata normal form. 6/4182 useless extension candidates. Maximal degree in co-relation 31975. Up to 3843 conditions per place. [2024-06-28 02:49:47,762 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 171 selfloop transitions, 25 changer transitions 0/205 dead transitions. [2024-06-28 02:49:47,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 205 transitions, 2051 flow [2024-06-28 02:49:47,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:47,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:47,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 02:49:47,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43410852713178294 [2024-06-28 02:49:47,763 INFO L175 Difference]: Start difference. First operand has 143 places, 172 transitions, 1521 flow. Second operand 9 states and 168 transitions. [2024-06-28 02:49:47,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 205 transitions, 2051 flow [2024-06-28 02:49:47,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 205 transitions, 1973 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 02:49:47,945 INFO L231 Difference]: Finished difference. Result has 146 places, 175 transitions, 1565 flow [2024-06-28 02:49:47,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1443, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1565, PETRI_PLACES=146, PETRI_TRANSITIONS=175} [2024-06-28 02:49:47,946 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 102 predicate places. [2024-06-28 02:49:47,946 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 175 transitions, 1565 flow [2024-06-28 02:49:47,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:47,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:47,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:47,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:49:47,947 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:47,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:47,947 INFO L85 PathProgramCache]: Analyzing trace with hash -136645199, now seen corresponding path program 8 times [2024-06-28 02:49:47,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:47,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706628110] [2024-06-28 02:49:47,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:47,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:48,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:48,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:48,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706628110] [2024-06-28 02:49:48,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706628110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:48,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:48,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:48,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618572154] [2024-06-28 02:49:48,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:48,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:48,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:48,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:48,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:49,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:49,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 175 transitions, 1565 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:49,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:49,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:49,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:49,769 INFO L124 PetriNetUnfolderBase]: 2798/4271 cut-off events. [2024-06-28 02:49:49,769 INFO L125 PetriNetUnfolderBase]: For 292384/292384 co-relation queries the response was YES. [2024-06-28 02:49:49,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33158 conditions, 4271 events. 2798/4271 cut-off events. For 292384/292384 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 22129 event pairs, 760 based on Foata normal form. 4/4263 useless extension candidates. Maximal degree in co-relation 33092. Up to 3759 conditions per place. [2024-06-28 02:49:49,858 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 160 selfloop transitions, 47 changer transitions 0/216 dead transitions. [2024-06-28 02:49:49,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 216 transitions, 2507 flow [2024-06-28 02:49:49,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:49,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:49,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-28 02:49:49,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599483204134367 [2024-06-28 02:49:49,859 INFO L175 Difference]: Start difference. First operand has 146 places, 175 transitions, 1565 flow. Second operand 9 states and 178 transitions. [2024-06-28 02:49:49,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 216 transitions, 2507 flow [2024-06-28 02:49:50,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 216 transitions, 2415 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:50,049 INFO L231 Difference]: Finished difference. Result has 148 places, 181 transitions, 1703 flow [2024-06-28 02:49:50,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1473, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1703, PETRI_PLACES=148, PETRI_TRANSITIONS=181} [2024-06-28 02:49:50,049 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 104 predicate places. [2024-06-28 02:49:50,049 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 181 transitions, 1703 flow [2024-06-28 02:49:50,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:50,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:50,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:50,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:49:50,050 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:50,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:50,050 INFO L85 PathProgramCache]: Analyzing trace with hash -955089381, now seen corresponding path program 9 times [2024-06-28 02:49:50,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:50,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495204750] [2024-06-28 02:49:50,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:50,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:51,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:51,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:51,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495204750] [2024-06-28 02:49:51,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495204750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:51,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:51,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:51,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673259759] [2024-06-28 02:49:51,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:51,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:51,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:51,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:51,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:51,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:51,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 181 transitions, 1703 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:51,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:51,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:51,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:51,982 INFO L124 PetriNetUnfolderBase]: 2788/4257 cut-off events. [2024-06-28 02:49:51,982 INFO L125 PetriNetUnfolderBase]: For 302870/302870 co-relation queries the response was YES. [2024-06-28 02:49:52,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33225 conditions, 4257 events. 2788/4257 cut-off events. For 302870/302870 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 22031 event pairs, 758 based on Foata normal form. 4/4249 useless extension candidates. Maximal degree in co-relation 33158. Up to 3751 conditions per place. [2024-06-28 02:49:52,015 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 156 selfloop transitions, 49 changer transitions 0/214 dead transitions. [2024-06-28 02:49:52,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 214 transitions, 2359 flow [2024-06-28 02:49:52,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:52,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:52,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-28 02:49:52,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45219638242894056 [2024-06-28 02:49:52,016 INFO L175 Difference]: Start difference. First operand has 148 places, 181 transitions, 1703 flow. Second operand 9 states and 175 transitions. [2024-06-28 02:49:52,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 214 transitions, 2359 flow [2024-06-28 02:49:52,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 214 transitions, 2095 flow, removed 55 selfloop flow, removed 8 redundant places. [2024-06-28 02:49:52,211 INFO L231 Difference]: Finished difference. Result has 149 places, 181 transitions, 1545 flow [2024-06-28 02:49:52,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1545, PETRI_PLACES=149, PETRI_TRANSITIONS=181} [2024-06-28 02:49:52,211 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 105 predicate places. [2024-06-28 02:49:52,211 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 181 transitions, 1545 flow [2024-06-28 02:49:52,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:52,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:52,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:52,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:49:52,212 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:52,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:52,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1040904751, now seen corresponding path program 10 times [2024-06-28 02:49:52,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:52,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043671580] [2024-06-28 02:49:52,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:52,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:53,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:53,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:53,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043671580] [2024-06-28 02:49:53,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043671580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:53,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:53,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:53,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535433176] [2024-06-28 02:49:53,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:53,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:53,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:53,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:53,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:53,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:53,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 181 transitions, 1545 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:53,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:53,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:53,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:54,037 INFO L124 PetriNetUnfolderBase]: 2778/4243 cut-off events. [2024-06-28 02:49:54,037 INFO L125 PetriNetUnfolderBase]: For 311374/311374 co-relation queries the response was YES. [2024-06-28 02:49:54,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32839 conditions, 4243 events. 2778/4243 cut-off events. For 311374/311374 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21943 event pairs, 768 based on Foata normal form. 4/4235 useless extension candidates. Maximal degree in co-relation 32773. Up to 3899 conditions per place. [2024-06-28 02:49:54,071 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 173 selfloop transitions, 30 changer transitions 0/212 dead transitions. [2024-06-28 02:49:54,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 212 transitions, 2035 flow [2024-06-28 02:49:54,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:54,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:54,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 02:49:54,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-28 02:49:54,073 INFO L175 Difference]: Start difference. First operand has 149 places, 181 transitions, 1545 flow. Second operand 9 states and 171 transitions. [2024-06-28 02:49:54,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 212 transitions, 2035 flow [2024-06-28 02:49:54,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 212 transitions, 1907 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:54,254 INFO L231 Difference]: Finished difference. Result has 151 places, 181 transitions, 1485 flow [2024-06-28 02:49:54,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1417, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1485, PETRI_PLACES=151, PETRI_TRANSITIONS=181} [2024-06-28 02:49:54,255 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 107 predicate places. [2024-06-28 02:49:54,255 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 181 transitions, 1485 flow [2024-06-28 02:49:54,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:54,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:54,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:54,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:49:54,256 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)] === [2024-06-28 02:49:54,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:54,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1666716813, now seen corresponding path program 2 times [2024-06-28 02:49:54,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:54,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049681410] [2024-06-28 02:49:54,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:54,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:54,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:54,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:54,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049681410] [2024-06-28 02:49:54,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049681410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:54,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:54,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:49:54,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159168288] [2024-06-28 02:49:54,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:54,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:49:54,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:54,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:49:54,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:49:54,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:54,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 181 transitions, 1485 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:54,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:54,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:54,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:55,605 INFO L124 PetriNetUnfolderBase]: 2802/4265 cut-off events. [2024-06-28 02:49:55,605 INFO L125 PetriNetUnfolderBase]: For 327384/327404 co-relation queries the response was YES. [2024-06-28 02:49:55,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32957 conditions, 4265 events. 2802/4265 cut-off events. For 327384/327404 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 21392 event pairs, 904 based on Foata normal form. 9/4227 useless extension candidates. Maximal degree in co-relation 32890. Up to 4033 conditions per place. [2024-06-28 02:49:55,639 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 149 selfloop transitions, 11 changer transitions 0/190 dead transitions. [2024-06-28 02:49:55,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 190 transitions, 1827 flow [2024-06-28 02:49:55,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:49:55,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:49:55,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-28 02:49:55,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41472868217054265 [2024-06-28 02:49:55,639 INFO L175 Difference]: Start difference. First operand has 151 places, 181 transitions, 1485 flow. Second operand 6 states and 107 transitions. [2024-06-28 02:49:55,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 190 transitions, 1827 flow [2024-06-28 02:49:55,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 190 transitions, 1747 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:55,859 INFO L231 Difference]: Finished difference. Result has 150 places, 181 transitions, 1433 flow [2024-06-28 02:49:55,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1405, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1433, PETRI_PLACES=150, PETRI_TRANSITIONS=181} [2024-06-28 02:49:55,859 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 106 predicate places. [2024-06-28 02:49:55,860 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 181 transitions, 1433 flow [2024-06-28 02:49:55,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:55,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:55,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:55,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:49:55,860 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)] === [2024-06-28 02:49:55,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:55,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1660431439, now seen corresponding path program 1 times [2024-06-28 02:49:55,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:55,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991577287] [2024-06-28 02:49:55,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:55,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:56,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:56,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:56,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991577287] [2024-06-28 02:49:56,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991577287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:56,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:56,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:49:56,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018129833] [2024-06-28 02:49:56,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:56,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:49:56,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:56,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:49:56,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:49:56,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-06-28 02:49:56,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 181 transitions, 1433 flow. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:56,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:56,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-06-28 02:49:56,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:57,346 INFO L124 PetriNetUnfolderBase]: 3230/4747 cut-off events. [2024-06-28 02:49:57,346 INFO L125 PetriNetUnfolderBase]: For 341059/341059 co-relation queries the response was YES. [2024-06-28 02:49:57,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35730 conditions, 4747 events. 3230/4747 cut-off events. For 341059/341059 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 22563 event pairs, 1001 based on Foata normal form. 1/4746 useless extension candidates. Maximal degree in co-relation 35662. Up to 4716 conditions per place. [2024-06-28 02:49:57,385 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 181 selfloop transitions, 16 changer transitions 0/200 dead transitions. [2024-06-28 02:49:57,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 200 transitions, 2027 flow [2024-06-28 02:49:57,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:49:57,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:49:57,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-28 02:49:57,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3992248062015504 [2024-06-28 02:49:57,387 INFO L175 Difference]: Start difference. First operand has 150 places, 181 transitions, 1433 flow. Second operand 6 states and 103 transitions. [2024-06-28 02:49:57,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 200 transitions, 2027 flow [2024-06-28 02:49:57,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 200 transitions, 1993 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 02:49:57,601 INFO L231 Difference]: Finished difference. Result has 151 places, 187 transitions, 1523 flow [2024-06-28 02:49:57,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1399, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1523, PETRI_PLACES=151, PETRI_TRANSITIONS=187} [2024-06-28 02:49:57,601 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 107 predicate places. [2024-06-28 02:49:57,601 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 187 transitions, 1523 flow [2024-06-28 02:49:57,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:57,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:57,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:57,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:49:57,602 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)] === [2024-06-28 02:49:57,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:57,602 INFO L85 PathProgramCache]: Analyzing trace with hash -280102189, now seen corresponding path program 2 times [2024-06-28 02:49:57,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:57,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882149935] [2024-06-28 02:49:57,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:57,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:58,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:58,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:58,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882149935] [2024-06-28 02:49:58,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882149935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:58,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:58,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:49:58,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056264923] [2024-06-28 02:49:58,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:58,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:49:58,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:58,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:49:58,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:49:58,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-06-28 02:49:58,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 187 transitions, 1523 flow. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:58,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:58,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-06-28 02:49:58,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:59,140 INFO L124 PetriNetUnfolderBase]: 3227/4744 cut-off events. [2024-06-28 02:49:59,141 INFO L125 PetriNetUnfolderBase]: For 355621/355624 co-relation queries the response was YES. [2024-06-28 02:49:59,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36368 conditions, 4744 events. 3227/4744 cut-off events. For 355621/355624 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 22583 event pairs, 1004 based on Foata normal form. 3/4744 useless extension candidates. Maximal degree in co-relation 36299. Up to 4713 conditions per place. [2024-06-28 02:49:59,183 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 177 selfloop transitions, 16 changer transitions 0/196 dead transitions. [2024-06-28 02:49:59,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 196 transitions, 1931 flow [2024-06-28 02:49:59,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:49:59,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:49:59,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-28 02:49:59,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38372093023255816 [2024-06-28 02:49:59,184 INFO L175 Difference]: Start difference. First operand has 151 places, 187 transitions, 1523 flow. Second operand 6 states and 99 transitions. [2024-06-28 02:49:59,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 196 transitions, 1931 flow [2024-06-28 02:49:59,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 196 transitions, 1865 flow, removed 29 selfloop flow, removed 2 redundant places. [2024-06-28 02:49:59,425 INFO L231 Difference]: Finished difference. Result has 155 places, 187 transitions, 1495 flow [2024-06-28 02:49:59,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1457, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1495, PETRI_PLACES=155, PETRI_TRANSITIONS=187} [2024-06-28 02:49:59,426 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 111 predicate places. [2024-06-28 02:49:59,426 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 187 transitions, 1495 flow [2024-06-28 02:49:59,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:59,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:59,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:59,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:49:59,426 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:59,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:59,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1914149405, now seen corresponding path program 1 times [2024-06-28 02:49:59,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:59,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754285364] [2024-06-28 02:49:59,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:59,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:00,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:00,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:00,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754285364] [2024-06-28 02:50:00,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754285364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:00,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:00,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:00,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225741141] [2024-06-28 02:50:00,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:00,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:00,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:00,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:00,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:00,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:00,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 187 transitions, 1495 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:00,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:00,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:00,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:02,012 INFO L124 PetriNetUnfolderBase]: 2841/4330 cut-off events. [2024-06-28 02:50:02,012 INFO L125 PetriNetUnfolderBase]: For 371390/371390 co-relation queries the response was YES. [2024-06-28 02:50:02,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35016 conditions, 4330 events. 2841/4330 cut-off events. For 371390/371390 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 22395 event pairs, 629 based on Foata normal form. 4/4322 useless extension candidates. Maximal degree in co-relation 34945. Up to 3939 conditions per place. [2024-06-28 02:50:02,049 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 203 selfloop transitions, 32 changer transitions 0/246 dead transitions. [2024-06-28 02:50:02,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 246 transitions, 2403 flow [2024-06-28 02:50:02,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:50:02,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:50:02,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 231 transitions. [2024-06-28 02:50:02,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476744186046512 [2024-06-28 02:50:02,050 INFO L175 Difference]: Start difference. First operand has 155 places, 187 transitions, 1495 flow. Second operand 12 states and 231 transitions. [2024-06-28 02:50:02,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 246 transitions, 2403 flow [2024-06-28 02:50:02,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 246 transitions, 2357 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 02:50:02,415 INFO L231 Difference]: Finished difference. Result has 162 places, 191 transitions, 1652 flow [2024-06-28 02:50:02,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1652, PETRI_PLACES=162, PETRI_TRANSITIONS=191} [2024-06-28 02:50:02,416 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 118 predicate places. [2024-06-28 02:50:02,416 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 191 transitions, 1652 flow [2024-06-28 02:50:02,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:02,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:02,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:02,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:50:02,416 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:02,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:02,416 INFO L85 PathProgramCache]: Analyzing trace with hash 188620587, now seen corresponding path program 2 times [2024-06-28 02:50:02,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:02,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367054074] [2024-06-28 02:50:02,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:02,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:03,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:03,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:03,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367054074] [2024-06-28 02:50:03,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367054074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:03,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:03,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:03,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090691809] [2024-06-28 02:50:03,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:03,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:03,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:03,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:03,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:03,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:03,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 191 transitions, 1652 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:03,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:03,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:03,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:04,887 INFO L124 PetriNetUnfolderBase]: 2858/4357 cut-off events. [2024-06-28 02:50:04,888 INFO L125 PetriNetUnfolderBase]: For 390254/390254 co-relation queries the response was YES. [2024-06-28 02:50:04,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35926 conditions, 4357 events. 2858/4357 cut-off events. For 390254/390254 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 22534 event pairs, 754 based on Foata normal form. 4/4349 useless extension candidates. Maximal degree in co-relation 35854. Up to 4030 conditions per place. [2024-06-28 02:50:04,924 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 202 selfloop transitions, 28 changer transitions 0/241 dead transitions. [2024-06-28 02:50:04,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 241 transitions, 2302 flow [2024-06-28 02:50:04,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:04,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:04,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-28 02:50:04,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44820295983086683 [2024-06-28 02:50:04,925 INFO L175 Difference]: Start difference. First operand has 162 places, 191 transitions, 1652 flow. Second operand 11 states and 212 transitions. [2024-06-28 02:50:04,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 241 transitions, 2302 flow [2024-06-28 02:50:05,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 241 transitions, 2160 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:05,412 INFO L231 Difference]: Finished difference. Result has 165 places, 193 transitions, 1645 flow [2024-06-28 02:50:05,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1534, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1645, PETRI_PLACES=165, PETRI_TRANSITIONS=193} [2024-06-28 02:50:05,412 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 121 predicate places. [2024-06-28 02:50:05,412 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 193 transitions, 1645 flow [2024-06-28 02:50:05,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:05,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:05,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:05,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:50:05,413 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:05,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:05,413 INFO L85 PathProgramCache]: Analyzing trace with hash 188620711, now seen corresponding path program 1 times [2024-06-28 02:50:05,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:05,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495717132] [2024-06-28 02:50:05,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:05,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:06,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:06,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:06,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495717132] [2024-06-28 02:50:06,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495717132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:06,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:06,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:06,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493409698] [2024-06-28 02:50:06,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:06,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:06,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:06,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:06,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:06,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:06,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 193 transitions, 1645 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:06,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:06,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:06,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:07,896 INFO L124 PetriNetUnfolderBase]: 2909/4434 cut-off events. [2024-06-28 02:50:07,896 INFO L125 PetriNetUnfolderBase]: For 414394/414394 co-relation queries the response was YES. [2024-06-28 02:50:07,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36734 conditions, 4434 events. 2909/4434 cut-off events. For 414394/414394 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 23071 event pairs, 741 based on Foata normal form. 4/4422 useless extension candidates. Maximal degree in co-relation 36660. Up to 4053 conditions per place. [2024-06-28 02:50:07,936 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 207 selfloop transitions, 33 changer transitions 0/251 dead transitions. [2024-06-28 02:50:07,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 251 transitions, 2581 flow [2024-06-28 02:50:07,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:07,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-28 02:50:07,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630021141649049 [2024-06-28 02:50:07,937 INFO L175 Difference]: Start difference. First operand has 165 places, 193 transitions, 1645 flow. Second operand 11 states and 219 transitions. [2024-06-28 02:50:07,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 251 transitions, 2581 flow [2024-06-28 02:50:08,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 251 transitions, 2492 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 02:50:08,255 INFO L231 Difference]: Finished difference. Result has 167 places, 199 transitions, 1776 flow [2024-06-28 02:50:08,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1556, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1776, PETRI_PLACES=167, PETRI_TRANSITIONS=199} [2024-06-28 02:50:08,256 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 123 predicate places. [2024-06-28 02:50:08,256 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 199 transitions, 1776 flow [2024-06-28 02:50:08,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:08,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:08,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:08,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:50:08,256 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:08,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:08,256 INFO L85 PathProgramCache]: Analyzing trace with hash 191417221, now seen corresponding path program 2 times [2024-06-28 02:50:08,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:08,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340732073] [2024-06-28 02:50:08,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:08,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:09,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:09,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:09,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340732073] [2024-06-28 02:50:09,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340732073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:09,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:09,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:09,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769688659] [2024-06-28 02:50:09,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:09,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:09,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:09,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:09,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:09,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:09,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 199 transitions, 1776 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:09,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:09,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:09,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:10,918 INFO L124 PetriNetUnfolderBase]: 2936/4473 cut-off events. [2024-06-28 02:50:10,918 INFO L125 PetriNetUnfolderBase]: For 432925/432925 co-relation queries the response was YES. [2024-06-28 02:50:10,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37683 conditions, 4473 events. 2936/4473 cut-off events. For 432925/432925 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 23347 event pairs, 743 based on Foata normal form. 4/4462 useless extension candidates. Maximal degree in co-relation 37608. Up to 4119 conditions per place. [2024-06-28 02:50:10,959 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 208 selfloop transitions, 28 changer transitions 0/247 dead transitions. [2024-06-28 02:50:10,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 247 transitions, 2626 flow [2024-06-28 02:50:10,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:10,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:10,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-28 02:50:10,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4604651162790698 [2024-06-28 02:50:10,960 INFO L175 Difference]: Start difference. First operand has 167 places, 199 transitions, 1776 flow. Second operand 10 states and 198 transitions. [2024-06-28 02:50:10,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 247 transitions, 2626 flow [2024-06-28 02:50:11,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 247 transitions, 2498 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-28 02:50:11,235 INFO L231 Difference]: Finished difference. Result has 170 places, 202 transitions, 1788 flow [2024-06-28 02:50:11,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1666, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1788, PETRI_PLACES=170, PETRI_TRANSITIONS=202} [2024-06-28 02:50:11,235 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 126 predicate places. [2024-06-28 02:50:11,236 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 202 transitions, 1788 flow [2024-06-28 02:50:11,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:11,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:11,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:11,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:50:11,236 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:11,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:11,237 INFO L85 PathProgramCache]: Analyzing trace with hash 302239617, now seen corresponding path program 3 times [2024-06-28 02:50:11,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:11,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530037661] [2024-06-28 02:50:11,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:11,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:12,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:12,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:12,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530037661] [2024-06-28 02:50:12,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530037661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:12,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:12,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:12,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903623869] [2024-06-28 02:50:12,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:12,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:12,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:12,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:12,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:12,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:12,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 202 transitions, 1788 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:12,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:12,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:12,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:13,741 INFO L124 PetriNetUnfolderBase]: 2933/4468 cut-off events. [2024-06-28 02:50:13,741 INFO L125 PetriNetUnfolderBase]: For 444853/444853 co-relation queries the response was YES. [2024-06-28 02:50:13,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37661 conditions, 4468 events. 2933/4468 cut-off events. For 444853/444853 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 23239 event pairs, 752 based on Foata normal form. 4/4458 useless extension candidates. Maximal degree in co-relation 37584. Up to 4117 conditions per place. [2024-06-28 02:50:13,780 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 200 selfloop transitions, 28 changer transitions 0/239 dead transitions. [2024-06-28 02:50:13,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 239 transitions, 2338 flow [2024-06-28 02:50:13,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:13,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:13,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-28 02:50:13,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45478036175710596 [2024-06-28 02:50:13,781 INFO L175 Difference]: Start difference. First operand has 170 places, 202 transitions, 1788 flow. Second operand 9 states and 176 transitions. [2024-06-28 02:50:13,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 239 transitions, 2338 flow [2024-06-28 02:50:14,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 239 transitions, 2200 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:14,147 INFO L231 Difference]: Finished difference. Result has 171 places, 202 transitions, 1716 flow [2024-06-28 02:50:14,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1716, PETRI_PLACES=171, PETRI_TRANSITIONS=202} [2024-06-28 02:50:14,148 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 127 predicate places. [2024-06-28 02:50:14,148 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 202 transitions, 1716 flow [2024-06-28 02:50:14,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:14,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:14,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:14,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:50:14,148 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:14,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:14,149 INFO L85 PathProgramCache]: Analyzing trace with hash 302244391, now seen corresponding path program 3 times [2024-06-28 02:50:14,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:14,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596077386] [2024-06-28 02:50:14,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:14,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:15,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:15,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:15,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596077386] [2024-06-28 02:50:15,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596077386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:15,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:15,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:15,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333967495] [2024-06-28 02:50:15,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:15,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:15,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:15,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:15,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:15,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:15,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 202 transitions, 1716 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:15,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:15,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:15,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:16,423 INFO L124 PetriNetUnfolderBase]: 2918/4447 cut-off events. [2024-06-28 02:50:16,423 INFO L125 PetriNetUnfolderBase]: For 455574/455574 co-relation queries the response was YES. [2024-06-28 02:50:16,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37459 conditions, 4447 events. 2918/4447 cut-off events. For 455574/455574 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 23127 event pairs, 741 based on Foata normal form. 4/4436 useless extension candidates. Maximal degree in co-relation 37381. Up to 4126 conditions per place. [2024-06-28 02:50:16,464 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 210 selfloop transitions, 23 changer transitions 0/244 dead transitions. [2024-06-28 02:50:16,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 244 transitions, 2292 flow [2024-06-28 02:50:16,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:16,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:16,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-28 02:50:16,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44883720930232557 [2024-06-28 02:50:16,465 INFO L175 Difference]: Start difference. First operand has 171 places, 202 transitions, 1716 flow. Second operand 10 states and 193 transitions. [2024-06-28 02:50:16,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 244 transitions, 2292 flow [2024-06-28 02:50:16,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 244 transitions, 2187 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:16,824 INFO L231 Difference]: Finished difference. Result has 173 places, 202 transitions, 1665 flow [2024-06-28 02:50:16,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1665, PETRI_PLACES=173, PETRI_TRANSITIONS=202} [2024-06-28 02:50:16,825 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 129 predicate places. [2024-06-28 02:50:16,825 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 202 transitions, 1665 flow [2024-06-28 02:50:16,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:16,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:16,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:16,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:50:16,825 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:16,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:16,826 INFO L85 PathProgramCache]: Analyzing trace with hash 306708267, now seen corresponding path program 4 times [2024-06-28 02:50:16,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:16,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923176800] [2024-06-28 02:50:16,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:16,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:18,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:18,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:18,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923176800] [2024-06-28 02:50:18,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923176800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:18,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:18,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:18,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237967587] [2024-06-28 02:50:18,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:18,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:18,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:18,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:18,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:18,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:18,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 202 transitions, 1665 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:18,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:18,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:18,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:19,152 INFO L124 PetriNetUnfolderBase]: 2940/4482 cut-off events. [2024-06-28 02:50:19,152 INFO L125 PetriNetUnfolderBase]: For 456577/456580 co-relation queries the response was YES. [2024-06-28 02:50:19,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37638 conditions, 4482 events. 2940/4482 cut-off events. For 456577/456580 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 23351 event pairs, 754 based on Foata normal form. 6/4473 useless extension candidates. Maximal degree in co-relation 37559. Up to 4040 conditions per place. [2024-06-28 02:50:19,262 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 173 selfloop transitions, 54 changer transitions 0/238 dead transitions. [2024-06-28 02:50:19,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 238 transitions, 2275 flow [2024-06-28 02:50:19,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:19,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:19,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-28 02:50:19,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625322997416021 [2024-06-28 02:50:19,264 INFO L175 Difference]: Start difference. First operand has 173 places, 202 transitions, 1665 flow. Second operand 9 states and 179 transitions. [2024-06-28 02:50:19,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 238 transitions, 2275 flow [2024-06-28 02:50:19,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 238 transitions, 2219 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 02:50:19,603 INFO L231 Difference]: Finished difference. Result has 173 places, 204 transitions, 1798 flow [2024-06-28 02:50:19,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1609, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1798, PETRI_PLACES=173, PETRI_TRANSITIONS=204} [2024-06-28 02:50:19,604 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 129 predicate places. [2024-06-28 02:50:19,604 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 204 transitions, 1798 flow [2024-06-28 02:50:19,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:19,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:19,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:19,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:50:19,605 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:19,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:19,605 INFO L85 PathProgramCache]: Analyzing trace with hash 306708391, now seen corresponding path program 4 times [2024-06-28 02:50:19,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:19,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268720962] [2024-06-28 02:50:19,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:19,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:20,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:20,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:20,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268720962] [2024-06-28 02:50:20,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268720962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:20,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:20,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:20,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104008232] [2024-06-28 02:50:20,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:20,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:20,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:20,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:20,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:21,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:21,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 204 transitions, 1798 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:21,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:21,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:21,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:22,067 INFO L124 PetriNetUnfolderBase]: 3009/4582 cut-off events. [2024-06-28 02:50:22,067 INFO L125 PetriNetUnfolderBase]: For 485932/485935 co-relation queries the response was YES. [2024-06-28 02:50:22,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39404 conditions, 4582 events. 3009/4582 cut-off events. For 485932/485935 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 24047 event pairs, 655 based on Foata normal form. 4/4574 useless extension candidates. Maximal degree in co-relation 39324. Up to 3709 conditions per place. [2024-06-28 02:50:22,107 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 150 selfloop transitions, 99 changer transitions 0/260 dead transitions. [2024-06-28 02:50:22,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 260 transitions, 2784 flow [2024-06-28 02:50:22,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:22,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:22,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 225 transitions. [2024-06-28 02:50:22,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47568710359408034 [2024-06-28 02:50:22,109 INFO L175 Difference]: Start difference. First operand has 173 places, 204 transitions, 1798 flow. Second operand 11 states and 225 transitions. [2024-06-28 02:50:22,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 260 transitions, 2784 flow [2024-06-28 02:50:22,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 260 transitions, 2613 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 02:50:22,376 INFO L231 Difference]: Finished difference. Result has 177 places, 210 transitions, 1996 flow [2024-06-28 02:50:22,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1627, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1996, PETRI_PLACES=177, PETRI_TRANSITIONS=210} [2024-06-28 02:50:22,377 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 133 predicate places. [2024-06-28 02:50:22,377 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 210 transitions, 1996 flow [2024-06-28 02:50:22,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:22,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:22,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:22,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:50:22,377 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:22,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:22,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1285438243, now seen corresponding path program 5 times [2024-06-28 02:50:22,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:22,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104153097] [2024-06-28 02:50:22,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:22,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:22,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:23,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:23,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:23,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104153097] [2024-06-28 02:50:23,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104153097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:23,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:23,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:23,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646714180] [2024-06-28 02:50:23,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:23,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:23,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:23,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:23,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:23,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:23,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 210 transitions, 1996 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:23,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:23,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:23,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:24,591 INFO L124 PetriNetUnfolderBase]: 2984/4545 cut-off events. [2024-06-28 02:50:24,591 INFO L125 PetriNetUnfolderBase]: For 496674/496677 co-relation queries the response was YES. [2024-06-28 02:50:24,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39597 conditions, 4545 events. 2984/4545 cut-off events. For 496674/496677 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 23726 event pairs, 670 based on Foata normal form. 4/4536 useless extension candidates. Maximal degree in co-relation 39516. Up to 3712 conditions per place. [2024-06-28 02:50:24,632 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 147 selfloop transitions, 94 changer transitions 0/252 dead transitions. [2024-06-28 02:50:24,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 252 transitions, 2592 flow [2024-06-28 02:50:24,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:24,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:24,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-06-28 02:50:24,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4697674418604651 [2024-06-28 02:50:24,633 INFO L175 Difference]: Start difference. First operand has 177 places, 210 transitions, 1996 flow. Second operand 10 states and 202 transitions. [2024-06-28 02:50:24,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 252 transitions, 2592 flow [2024-06-28 02:50:25,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 252 transitions, 2345 flow, removed 70 selfloop flow, removed 7 redundant places. [2024-06-28 02:50:25,073 INFO L231 Difference]: Finished difference. Result has 180 places, 210 transitions, 1945 flow [2024-06-28 02:50:25,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1749, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1945, PETRI_PLACES=180, PETRI_TRANSITIONS=210} [2024-06-28 02:50:25,073 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 136 predicate places. [2024-06-28 02:50:25,073 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 210 transitions, 1945 flow [2024-06-28 02:50:25,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:25,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:25,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:25,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:50:25,074 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)] === [2024-06-28 02:50:25,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:25,074 INFO L85 PathProgramCache]: Analyzing trace with hash 2015531739, now seen corresponding path program 1 times [2024-06-28 02:50:25,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:25,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428108356] [2024-06-28 02:50:25,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:25,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:25,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:25,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:25,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428108356] [2024-06-28 02:50:25,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428108356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:25,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:25,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:50:25,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341376954] [2024-06-28 02:50:25,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:25,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:50:25,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:25,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:50:25,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:50:26,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:26,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 210 transitions, 1945 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) [2024-06-28 02:50:26,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:26,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:26,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:26,826 INFO L124 PetriNetUnfolderBase]: 3036/4623 cut-off events. [2024-06-28 02:50:26,826 INFO L125 PetriNetUnfolderBase]: For 513732/513755 co-relation queries the response was YES. [2024-06-28 02:50:26,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40143 conditions, 4623 events. 3036/4623 cut-off events. For 513732/513755 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 23626 event pairs, 919 based on Foata normal form. 8/4584 useless extension candidates. Maximal degree in co-relation 40060. Up to 4298 conditions per place. [2024-06-28 02:50:26,873 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 177 selfloop transitions, 26 changer transitions 0/239 dead transitions. [2024-06-28 02:50:26,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 239 transitions, 2585 flow [2024-06-28 02:50:26,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:50:26,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:50:26,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-28 02:50:26,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45514950166112955 [2024-06-28 02:50:26,874 INFO L175 Difference]: Start difference. First operand has 180 places, 210 transitions, 1945 flow. Second operand 7 states and 137 transitions. [2024-06-28 02:50:26,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 239 transitions, 2585 flow [2024-06-28 02:50:27,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 239 transitions, 2389 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 02:50:27,386 INFO L231 Difference]: Finished difference. Result has 178 places, 216 transitions, 1882 flow [2024-06-28 02:50:27,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1749, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1882, PETRI_PLACES=178, PETRI_TRANSITIONS=216} [2024-06-28 02:50:27,386 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 134 predicate places. [2024-06-28 02:50:27,386 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 216 transitions, 1882 flow [2024-06-28 02:50:27,387 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) [2024-06-28 02:50:27,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:27,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:27,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:50:27,387 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:27,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:27,387 INFO L85 PathProgramCache]: Analyzing trace with hash 472352175, now seen corresponding path program 6 times [2024-06-28 02:50:27,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:27,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086634482] [2024-06-28 02:50:27,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:27,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:28,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:28,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:28,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086634482] [2024-06-28 02:50:28,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086634482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:28,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:28,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:28,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087441636] [2024-06-28 02:50:28,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:28,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:28,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:28,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:28,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:28,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:28,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 216 transitions, 1882 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:28,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:28,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:28,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:29,573 INFO L124 PetriNetUnfolderBase]: 3041/4631 cut-off events. [2024-06-28 02:50:29,573 INFO L125 PetriNetUnfolderBase]: For 535372/535395 co-relation queries the response was YES. [2024-06-28 02:50:29,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40868 conditions, 4631 events. 3041/4631 cut-off events. For 535372/535395 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 24277 event pairs, 711 based on Foata normal form. 4/4617 useless extension candidates. Maximal degree in co-relation 40784. Up to 4127 conditions per place. [2024-06-28 02:50:29,617 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 193 selfloop transitions, 53 changer transitions 0/259 dead transitions. [2024-06-28 02:50:29,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 259 transitions, 2568 flow [2024-06-28 02:50:29,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:29,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:29,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-28 02:50:29,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4604651162790698 [2024-06-28 02:50:29,618 INFO L175 Difference]: Start difference. First operand has 178 places, 216 transitions, 1882 flow. Second operand 10 states and 198 transitions. [2024-06-28 02:50:29,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 259 transitions, 2568 flow [2024-06-28 02:50:30,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 259 transitions, 2516 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 02:50:30,066 INFO L231 Difference]: Finished difference. Result has 185 places, 219 transitions, 2034 flow [2024-06-28 02:50:30,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1830, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2034, PETRI_PLACES=185, PETRI_TRANSITIONS=219} [2024-06-28 02:50:30,067 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 141 predicate places. [2024-06-28 02:50:30,067 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 219 transitions, 2034 flow [2024-06-28 02:50:30,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:30,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:30,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:30,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:50:30,067 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:30,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:30,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1527315599, now seen corresponding path program 7 times [2024-06-28 02:50:30,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:30,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118165528] [2024-06-28 02:50:30,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:30,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:31,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:31,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:31,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118165528] [2024-06-28 02:50:31,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118165528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:31,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:31,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:31,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542765776] [2024-06-28 02:50:31,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:31,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:31,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:31,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:31,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:31,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:31,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 219 transitions, 2034 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:31,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:31,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:31,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:32,550 INFO L124 PetriNetUnfolderBase]: 3103/4724 cut-off events. [2024-06-28 02:50:32,550 INFO L125 PetriNetUnfolderBase]: For 567779/567816 co-relation queries the response was YES. [2024-06-28 02:50:32,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43018 conditions, 4724 events. 3103/4724 cut-off events. For 567779/567816 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 24933 event pairs, 696 based on Foata normal form. 4/4706 useless extension candidates. Maximal degree in co-relation 42932. Up to 4152 conditions per place. [2024-06-28 02:50:32,596 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 193 selfloop transitions, 61 changer transitions 0/267 dead transitions. [2024-06-28 02:50:32,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 267 transitions, 3046 flow [2024-06-28 02:50:32,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:32,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:32,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 201 transitions. [2024-06-28 02:50:32,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46744186046511627 [2024-06-28 02:50:32,597 INFO L175 Difference]: Start difference. First operand has 185 places, 219 transitions, 2034 flow. Second operand 10 states and 201 transitions. [2024-06-28 02:50:32,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 267 transitions, 3046 flow [2024-06-28 02:50:33,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 267 transitions, 2866 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:33,167 INFO L231 Difference]: Finished difference. Result has 187 places, 225 transitions, 2170 flow [2024-06-28 02:50:33,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1854, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2170, PETRI_PLACES=187, PETRI_TRANSITIONS=225} [2024-06-28 02:50:33,167 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 143 predicate places. [2024-06-28 02:50:33,167 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 225 transitions, 2170 flow [2024-06-28 02:50:33,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:33,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:33,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:33,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:50:33,168 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:33,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:33,169 INFO L85 PathProgramCache]: Analyzing trace with hash 478781265, now seen corresponding path program 8 times [2024-06-28 02:50:33,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:33,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831429879] [2024-06-28 02:50:33,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:33,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:34,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:34,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:34,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831429879] [2024-06-28 02:50:34,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831429879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:34,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:34,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:34,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160499592] [2024-06-28 02:50:34,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:34,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:34,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:34,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:34,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:34,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:34,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 225 transitions, 2170 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:34,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:34,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:34,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:35,944 INFO L124 PetriNetUnfolderBase]: 3125/4756 cut-off events. [2024-06-28 02:50:35,944 INFO L125 PetriNetUnfolderBase]: For 590616/590653 co-relation queries the response was YES. [2024-06-28 02:50:35,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43916 conditions, 4756 events. 3125/4756 cut-off events. For 590616/590653 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 25147 event pairs, 713 based on Foata normal form. 4/4738 useless extension candidates. Maximal degree in co-relation 43829. Up to 4327 conditions per place. [2024-06-28 02:50:35,995 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 214 selfloop transitions, 40 changer transitions 0/267 dead transitions. [2024-06-28 02:50:35,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 267 transitions, 2880 flow [2024-06-28 02:50:35,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:35,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:35,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-28 02:50:35,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511627906976744 [2024-06-28 02:50:35,997 INFO L175 Difference]: Start difference. First operand has 187 places, 225 transitions, 2170 flow. Second operand 10 states and 194 transitions. [2024-06-28 02:50:35,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 267 transitions, 2880 flow [2024-06-28 02:50:36,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 267 transitions, 2664 flow, removed 78 selfloop flow, removed 6 redundant places. [2024-06-28 02:50:36,630 INFO L231 Difference]: Finished difference. Result has 191 places, 228 transitions, 2144 flow [2024-06-28 02:50:36,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1990, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2144, PETRI_PLACES=191, PETRI_TRANSITIONS=228} [2024-06-28 02:50:36,631 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 147 predicate places. [2024-06-28 02:50:36,631 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 228 transitions, 2144 flow [2024-06-28 02:50:36,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:36,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:36,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:36,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:50:36,632 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:36,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:36,632 INFO L85 PathProgramCache]: Analyzing trace with hash 472347401, now seen corresponding path program 5 times [2024-06-28 02:50:36,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:36,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15452367] [2024-06-28 02:50:36,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:36,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:38,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:38,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:38,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15452367] [2024-06-28 02:50:38,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15452367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:38,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:38,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:38,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506172003] [2024-06-28 02:50:38,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:38,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:38,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:38,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:38,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:38,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:38,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 228 transitions, 2144 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:38,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:38,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:38,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:39,326 INFO L124 PetriNetUnfolderBase]: 3142/4784 cut-off events. [2024-06-28 02:50:39,326 INFO L125 PetriNetUnfolderBase]: For 608504/608541 co-relation queries the response was YES. [2024-06-28 02:50:39,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44267 conditions, 4784 events. 3142/4784 cut-off events. For 608504/608541 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 25331 event pairs, 767 based on Foata normal form. 6/4771 useless extension candidates. Maximal degree in co-relation 44178. Up to 4459 conditions per place. [2024-06-28 02:50:39,380 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 225 selfloop transitions, 27 changer transitions 0/265 dead transitions. [2024-06-28 02:50:39,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 265 transitions, 2816 flow [2024-06-28 02:50:39,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:39,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:39,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 02:50:39,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43488372093023253 [2024-06-28 02:50:39,388 INFO L175 Difference]: Start difference. First operand has 191 places, 228 transitions, 2144 flow. Second operand 10 states and 187 transitions. [2024-06-28 02:50:39,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 265 transitions, 2816 flow [2024-06-28 02:50:39,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 265 transitions, 2692 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:39,748 INFO L231 Difference]: Finished difference. Result has 193 places, 230 transitions, 2165 flow [2024-06-28 02:50:39,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2020, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2165, PETRI_PLACES=193, PETRI_TRANSITIONS=230} [2024-06-28 02:50:39,748 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 149 predicate places. [2024-06-28 02:50:39,748 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 230 transitions, 2165 flow [2024-06-28 02:50:39,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:39,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:39,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:39,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:50:39,749 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:39,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:39,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1527137969, now seen corresponding path program 9 times [2024-06-28 02:50:39,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:39,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705040560] [2024-06-28 02:50:39,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:39,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:40,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:40,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:40,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705040560] [2024-06-28 02:50:40,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705040560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:40,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:40,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:40,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243784684] [2024-06-28 02:50:40,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:40,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:40,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:40,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:40,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:41,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:41,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 230 transitions, 2165 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:41,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:41,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:41,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:42,229 INFO L124 PetriNetUnfolderBase]: 3132/4769 cut-off events. [2024-06-28 02:50:42,229 INFO L125 PetriNetUnfolderBase]: For 623328/623365 co-relation queries the response was YES. [2024-06-28 02:50:42,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44289 conditions, 4769 events. 3132/4769 cut-off events. For 623328/623365 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 25233 event pairs, 696 based on Foata normal form. 4/4751 useless extension candidates. Maximal degree in co-relation 44199. Up to 4263 conditions per place. [2024-06-28 02:50:42,272 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 205 selfloop transitions, 52 changer transitions 0/270 dead transitions. [2024-06-28 02:50:42,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 270 transitions, 2789 flow [2024-06-28 02:50:42,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:42,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:42,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-28 02:50:42,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627906976744186 [2024-06-28 02:50:42,273 INFO L175 Difference]: Start difference. First operand has 193 places, 230 transitions, 2165 flow. Second operand 10 states and 199 transitions. [2024-06-28 02:50:42,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 270 transitions, 2789 flow [2024-06-28 02:50:42,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 270 transitions, 2624 flow, removed 57 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:42,672 INFO L231 Difference]: Finished difference. Result has 195 places, 230 transitions, 2112 flow [2024-06-28 02:50:42,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2000, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2112, PETRI_PLACES=195, PETRI_TRANSITIONS=230} [2024-06-28 02:50:42,673 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 151 predicate places. [2024-06-28 02:50:42,673 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 230 transitions, 2112 flow [2024-06-28 02:50:42,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:42,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:42,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:42,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:50:42,674 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:42,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:42,674 INFO L85 PathProgramCache]: Analyzing trace with hash -2061116949, now seen corresponding path program 1 times [2024-06-28 02:50:42,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:42,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172611639] [2024-06-28 02:50:42,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:42,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:43,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:43,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:43,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172611639] [2024-06-28 02:50:43,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172611639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:43,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:43,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:43,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527521984] [2024-06-28 02:50:43,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:43,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:43,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:43,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:43,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:43,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:50:43,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 230 transitions, 2112 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:43,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:43,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:50:43,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:44,932 INFO L124 PetriNetUnfolderBase]: 3481/5193 cut-off events. [2024-06-28 02:50:44,932 INFO L125 PetriNetUnfolderBase]: For 652557/652584 co-relation queries the response was YES. [2024-06-28 02:50:44,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46801 conditions, 5193 events. 3481/5193 cut-off events. For 652557/652584 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 26073 event pairs, 844 based on Foata normal form. 4/5177 useless extension candidates. Maximal degree in co-relation 46710. Up to 4863 conditions per place. [2024-06-28 02:50:44,980 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 222 selfloop transitions, 36 changer transitions 0/269 dead transitions. [2024-06-28 02:50:44,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 269 transitions, 2810 flow [2024-06-28 02:50:44,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:44,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:44,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 02:50:44,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43410852713178294 [2024-06-28 02:50:44,981 INFO L175 Difference]: Start difference. First operand has 195 places, 230 transitions, 2112 flow. Second operand 9 states and 168 transitions. [2024-06-28 02:50:44,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 269 transitions, 2810 flow [2024-06-28 02:50:45,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 269 transitions, 2674 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 02:50:45,424 INFO L231 Difference]: Finished difference. Result has 196 places, 235 transitions, 2157 flow [2024-06-28 02:50:45,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1980, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2157, PETRI_PLACES=196, PETRI_TRANSITIONS=235} [2024-06-28 02:50:45,425 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 152 predicate places. [2024-06-28 02:50:45,425 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 235 transitions, 2157 flow [2024-06-28 02:50:45,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:45,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:45,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:45,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:50:45,425 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)] === [2024-06-28 02:50:45,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:45,425 INFO L85 PathProgramCache]: Analyzing trace with hash -140634161, now seen corresponding path program 1 times [2024-06-28 02:50:45,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:45,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275644941] [2024-06-28 02:50:45,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:45,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:46,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:46,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:46,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275644941] [2024-06-28 02:50:46,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275644941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:46,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:46,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:50:46,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721813520] [2024-06-28 02:50:46,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:46,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:50:46,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:46,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:50:46,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:50:46,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:46,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 235 transitions, 2157 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) [2024-06-28 02:50:46,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:46,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:46,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:47,099 INFO L124 PetriNetUnfolderBase]: 3220/4889 cut-off events. [2024-06-28 02:50:47,099 INFO L125 PetriNetUnfolderBase]: For 669057/669074 co-relation queries the response was YES. [2024-06-28 02:50:47,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45354 conditions, 4889 events. 3220/4889 cut-off events. For 669057/669074 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 25160 event pairs, 912 based on Foata normal form. 13/4855 useless extension candidates. Maximal degree in co-relation 45261. Up to 4568 conditions per place. [2024-06-28 02:50:47,147 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 205 selfloop transitions, 23 changer transitions 0/265 dead transitions. [2024-06-28 02:50:47,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 265 transitions, 2867 flow [2024-06-28 02:50:47,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:50:47,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:50:47,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 02:50:47,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45182724252491696 [2024-06-28 02:50:47,148 INFO L175 Difference]: Start difference. First operand has 196 places, 235 transitions, 2157 flow. Second operand 7 states and 136 transitions. [2024-06-28 02:50:47,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 265 transitions, 2867 flow [2024-06-28 02:50:47,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 265 transitions, 2734 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 02:50:47,608 INFO L231 Difference]: Finished difference. Result has 198 places, 244 transitions, 2178 flow [2024-06-28 02:50:47,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2024, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2178, PETRI_PLACES=198, PETRI_TRANSITIONS=244} [2024-06-28 02:50:47,609 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 154 predicate places. [2024-06-28 02:50:47,609 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 244 transitions, 2178 flow [2024-06-28 02:50:47,609 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) [2024-06-28 02:50:47,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:47,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:47,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:50:47,609 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)] === [2024-06-28 02:50:47,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:47,610 INFO L85 PathProgramCache]: Analyzing trace with hash -140634595, now seen corresponding path program 2 times [2024-06-28 02:50:47,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:47,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006090140] [2024-06-28 02:50:47,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:47,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:48,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:48,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:48,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006090140] [2024-06-28 02:50:48,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006090140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:48,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:48,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:50:48,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939590233] [2024-06-28 02:50:48,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:48,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:50:48,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:48,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:50:48,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:50:48,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:48,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 244 transitions, 2178 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) [2024-06-28 02:50:48,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:48,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:48,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:49,369 INFO L124 PetriNetUnfolderBase]: 3225/4903 cut-off events. [2024-06-28 02:50:49,369 INFO L125 PetriNetUnfolderBase]: For 682906/682926 co-relation queries the response was YES. [2024-06-28 02:50:49,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46052 conditions, 4903 events. 3225/4903 cut-off events. For 682906/682926 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 25292 event pairs, 911 based on Foata normal form. 9/4865 useless extension candidates. Maximal degree in co-relation 45957. Up to 4600 conditions per place. [2024-06-28 02:50:49,421 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 207 selfloop transitions, 19 changer transitions 0/263 dead transitions. [2024-06-28 02:50:49,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 263 transitions, 2704 flow [2024-06-28 02:50:49,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:50:49,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:50:49,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 02:50:49,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 02:50:49,422 INFO L175 Difference]: Start difference. First operand has 198 places, 244 transitions, 2178 flow. Second operand 7 states and 129 transitions. [2024-06-28 02:50:49,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 263 transitions, 2704 flow [2024-06-28 02:50:49,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 263 transitions, 2668 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-28 02:50:49,907 INFO L231 Difference]: Finished difference. Result has 203 places, 247 transitions, 2226 flow [2024-06-28 02:50:49,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2142, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2226, PETRI_PLACES=203, PETRI_TRANSITIONS=247} [2024-06-28 02:50:49,907 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 159 predicate places. [2024-06-28 02:50:49,908 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 247 transitions, 2226 flow [2024-06-28 02:50:49,908 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) [2024-06-28 02:50:49,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:49,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:49,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:50:49,908 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:49,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:49,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1564858355, now seen corresponding path program 10 times [2024-06-28 02:50:49,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:49,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818618044] [2024-06-28 02:50:49,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:49,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:51,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:51,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:51,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818618044] [2024-06-28 02:50:51,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818618044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:51,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:51,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:51,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298610076] [2024-06-28 02:50:51,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:51,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:51,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:51,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:51,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:51,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:51,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 247 transitions, 2226 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:51,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:51,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:51,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:52,371 INFO L124 PetriNetUnfolderBase]: 3219/4901 cut-off events. [2024-06-28 02:50:52,372 INFO L125 PetriNetUnfolderBase]: For 710251/710285 co-relation queries the response was YES. [2024-06-28 02:50:52,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46821 conditions, 4901 events. 3219/4901 cut-off events. For 710251/710285 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 25855 event pairs, 745 based on Foata normal form. 6/4889 useless extension candidates. Maximal degree in co-relation 46723. Up to 4485 conditions per place. [2024-06-28 02:50:52,424 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 238 selfloop transitions, 27 changer transitions 0/280 dead transitions. [2024-06-28 02:50:52,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 280 transitions, 2936 flow [2024-06-28 02:50:52,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:52,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:52,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 02:50:52,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43669250645994834 [2024-06-28 02:50:52,426 INFO L175 Difference]: Start difference. First operand has 203 places, 247 transitions, 2226 flow. Second operand 9 states and 169 transitions. [2024-06-28 02:50:52,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 280 transitions, 2936 flow [2024-06-28 02:50:53,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 280 transitions, 2880 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 02:50:53,118 INFO L231 Difference]: Finished difference. Result has 207 places, 250 transitions, 2340 flow [2024-06-28 02:50:53,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2170, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2340, PETRI_PLACES=207, PETRI_TRANSITIONS=250} [2024-06-28 02:50:53,118 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 163 predicate places. [2024-06-28 02:50:53,118 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 250 transitions, 2340 flow [2024-06-28 02:50:53,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:53,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:53,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:53,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:50:53,119 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:53,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:53,119 INFO L85 PathProgramCache]: Analyzing trace with hash 2105585973, now seen corresponding path program 2 times [2024-06-28 02:50:53,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:53,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655223426] [2024-06-28 02:50:53,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:53,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:54,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:54,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:54,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655223426] [2024-06-28 02:50:54,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655223426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:54,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:54,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:54,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739984626] [2024-06-28 02:50:54,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:54,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:54,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:54,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:54,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:54,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:50:54,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 250 transitions, 2340 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:54,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:54,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:50:54,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:55,343 INFO L124 PetriNetUnfolderBase]: 3566/5318 cut-off events. [2024-06-28 02:50:55,343 INFO L125 PetriNetUnfolderBase]: For 745677/745705 co-relation queries the response was YES. [2024-06-28 02:50:55,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50255 conditions, 5318 events. 3566/5318 cut-off events. For 745677/745705 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 26705 event pairs, 901 based on Foata normal form. 4/5308 useless extension candidates. Maximal degree in co-relation 50156. Up to 5072 conditions per place. [2024-06-28 02:50:55,399 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 249 selfloop transitions, 24 changer transitions 0/285 dead transitions. [2024-06-28 02:50:55,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 285 transitions, 3072 flow [2024-06-28 02:50:55,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:55,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:55,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 02:50:55,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4160206718346253 [2024-06-28 02:50:55,400 INFO L175 Difference]: Start difference. First operand has 207 places, 250 transitions, 2340 flow. Second operand 9 states and 161 transitions. [2024-06-28 02:50:55,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 285 transitions, 3072 flow [2024-06-28 02:50:56,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 285 transitions, 2928 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:56,206 INFO L231 Difference]: Finished difference. Result has 209 places, 255 transitions, 2373 flow [2024-06-28 02:50:56,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2200, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2373, PETRI_PLACES=209, PETRI_TRANSITIONS=255} [2024-06-28 02:50:56,207 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 165 predicate places. [2024-06-28 02:50:56,207 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 255 transitions, 2373 flow [2024-06-28 02:50:56,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:56,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:56,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:56,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:50:56,207 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:56,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:56,208 INFO L85 PathProgramCache]: Analyzing trace with hash 58794075, now seen corresponding path program 11 times [2024-06-28 02:50:56,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:56,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913466719] [2024-06-28 02:50:56,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:56,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:57,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:57,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:57,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913466719] [2024-06-28 02:50:57,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913466719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:57,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:57,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:57,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186422993] [2024-06-28 02:50:57,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:57,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:57,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:57,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:57,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:57,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:57,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 255 transitions, 2373 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:57,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:57,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:57,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:58,542 INFO L124 PetriNetUnfolderBase]: 3233/4930 cut-off events. [2024-06-28 02:50:58,542 INFO L125 PetriNetUnfolderBase]: For 733576/733616 co-relation queries the response was YES. [2024-06-28 02:50:58,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48080 conditions, 4930 events. 3233/4930 cut-off events. For 733576/733616 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 26105 event pairs, 730 based on Foata normal form. 4/4916 useless extension candidates. Maximal degree in co-relation 47980. Up to 4386 conditions per place. [2024-06-28 02:50:58,593 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 224 selfloop transitions, 54 changer transitions 0/294 dead transitions. [2024-06-28 02:50:58,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 294 transitions, 3135 flow [2024-06-28 02:50:58,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:58,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:58,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-28 02:50:58,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4441860465116279 [2024-06-28 02:50:58,594 INFO L175 Difference]: Start difference. First operand has 209 places, 255 transitions, 2373 flow. Second operand 10 states and 191 transitions. [2024-06-28 02:50:58,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 294 transitions, 3135 flow [2024-06-28 02:50:59,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 294 transitions, 3010 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-28 02:50:59,288 INFO L231 Difference]: Finished difference. Result has 213 places, 258 transitions, 2478 flow [2024-06-28 02:50:59,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2248, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2478, PETRI_PLACES=213, PETRI_TRANSITIONS=258} [2024-06-28 02:50:59,289 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 169 predicate places. [2024-06-28 02:50:59,289 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 258 transitions, 2478 flow [2024-06-28 02:50:59,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:59,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:59,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:59,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 02:50:59,289 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:59,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:59,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1557642669, now seen corresponding path program 6 times [2024-06-28 02:50:59,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:59,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616214044] [2024-06-28 02:50:59,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:59,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:00,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:00,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:00,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616214044] [2024-06-28 02:51:00,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616214044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:00,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:00,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:51:00,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660314392] [2024-06-28 02:51:00,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:00,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:51:00,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:00,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:51:00,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:51:00,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:51:00,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 258 transitions, 2478 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:00,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:00,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:51:00,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:01,462 INFO L124 PetriNetUnfolderBase]: 3225/4913 cut-off events. [2024-06-28 02:51:01,462 INFO L125 PetriNetUnfolderBase]: For 747856/747902 co-relation queries the response was YES. [2024-06-28 02:51:01,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48357 conditions, 4913 events. 3225/4913 cut-off events. For 747856/747902 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 26020 event pairs, 763 based on Foata normal form. 4/4894 useless extension candidates. Maximal degree in co-relation 48256. Up to 4599 conditions per place. [2024-06-28 02:51:01,516 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 251 selfloop transitions, 21 changer transitions 0/288 dead transitions. [2024-06-28 02:51:01,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 288 transitions, 3184 flow [2024-06-28 02:51:01,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:51:01,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:51:01,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 02:51:01,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289405684754522 [2024-06-28 02:51:01,517 INFO L175 Difference]: Start difference. First operand has 213 places, 258 transitions, 2478 flow. Second operand 9 states and 166 transitions. [2024-06-28 02:51:01,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 288 transitions, 3184 flow [2024-06-28 02:51:02,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 288 transitions, 2978 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-28 02:51:02,238 INFO L231 Difference]: Finished difference. Result has 214 places, 260 transitions, 2417 flow [2024-06-28 02:51:02,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2272, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2417, PETRI_PLACES=214, PETRI_TRANSITIONS=260} [2024-06-28 02:51:02,239 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 170 predicate places. [2024-06-28 02:51:02,239 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 260 transitions, 2417 flow [2024-06-28 02:51:02,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:02,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:02,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:02,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 02:51:02,239 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:02,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:02,239 INFO L85 PathProgramCache]: Analyzing trace with hash 463430279, now seen corresponding path program 12 times [2024-06-28 02:51:02,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:02,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010380902] [2024-06-28 02:51:02,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:02,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:03,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:03,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:03,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010380902] [2024-06-28 02:51:03,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010380902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:03,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:03,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:03,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109734139] [2024-06-28 02:51:03,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:03,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:03,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:03,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:03,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:03,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:51:03,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 260 transitions, 2417 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:03,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:03,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:51:03,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:04,858 INFO L124 PetriNetUnfolderBase]: 3247/4950 cut-off events. [2024-06-28 02:51:04,858 INFO L125 PetriNetUnfolderBase]: For 772113/772159 co-relation queries the response was YES. [2024-06-28 02:51:04,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48814 conditions, 4950 events. 3247/4950 cut-off events. For 772113/772159 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 26231 event pairs, 748 based on Foata normal form. 4/4936 useless extension candidates. Maximal degree in co-relation 48712. Up to 4544 conditions per place. [2024-06-28 02:51:04,912 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 248 selfloop transitions, 35 changer transitions 0/299 dead transitions. [2024-06-28 02:51:04,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 299 transitions, 3197 flow [2024-06-28 02:51:04,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:51:04,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:51:04,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 02:51:04,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43953488372093025 [2024-06-28 02:51:04,913 INFO L175 Difference]: Start difference. First operand has 214 places, 260 transitions, 2417 flow. Second operand 10 states and 189 transitions. [2024-06-28 02:51:04,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 299 transitions, 3197 flow [2024-06-28 02:51:05,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 299 transitions, 3070 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-28 02:51:05,684 INFO L231 Difference]: Finished difference. Result has 217 places, 263 transitions, 2490 flow [2024-06-28 02:51:05,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2290, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2490, PETRI_PLACES=217, PETRI_TRANSITIONS=263} [2024-06-28 02:51:05,685 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 173 predicate places. [2024-06-28 02:51:05,685 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 263 transitions, 2490 flow [2024-06-28 02:51:05,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:05,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:05,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:05,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 02:51:05,685 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:05,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:05,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1550962541, now seen corresponding path program 3 times [2024-06-28 02:51:05,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:05,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962075192] [2024-06-28 02:51:05,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:05,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:06,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:06,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:06,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962075192] [2024-06-28 02:51:06,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962075192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:06,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:06,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:51:06,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531588989] [2024-06-28 02:51:06,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:06,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:51:06,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:06,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:51:06,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:51:06,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:51:06,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 263 transitions, 2490 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:06,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:06,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:51:06,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:07,906 INFO L124 PetriNetUnfolderBase]: 3641/5429 cut-off events. [2024-06-28 02:51:07,906 INFO L125 PetriNetUnfolderBase]: For 813715/813751 co-relation queries the response was YES. [2024-06-28 02:51:07,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52620 conditions, 5429 events. 3641/5429 cut-off events. For 813715/813751 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 27336 event pairs, 894 based on Foata normal form. 4/5419 useless extension candidates. Maximal degree in co-relation 52517. Up to 5147 conditions per place. [2024-06-28 02:51:07,964 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 255 selfloop transitions, 31 changer transitions 0/298 dead transitions. [2024-06-28 02:51:07,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 298 transitions, 3256 flow [2024-06-28 02:51:07,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:51:07,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:51:07,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 02:51:07,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42118863049095606 [2024-06-28 02:51:07,965 INFO L175 Difference]: Start difference. First operand has 217 places, 263 transitions, 2490 flow. Second operand 9 states and 163 transitions. [2024-06-28 02:51:07,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 298 transitions, 3256 flow [2024-06-28 02:51:08,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 298 transitions, 3076 flow, removed 55 selfloop flow, removed 8 redundant places. [2024-06-28 02:51:08,724 INFO L231 Difference]: Finished difference. Result has 219 places, 268 transitions, 2505 flow [2024-06-28 02:51:08,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2314, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2505, PETRI_PLACES=219, PETRI_TRANSITIONS=268} [2024-06-28 02:51:08,725 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 175 predicate places. [2024-06-28 02:51:08,725 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 268 transitions, 2505 flow [2024-06-28 02:51:08,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:08,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:08,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:08,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 02:51:08,725 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:08,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:08,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2098123899, now seen corresponding path program 13 times [2024-06-28 02:51:08,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:08,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825048195] [2024-06-28 02:51:08,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:08,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:10,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:10,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:10,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825048195] [2024-06-28 02:51:10,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825048195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:10,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:10,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:10,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169039830] [2024-06-28 02:51:10,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:10,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:10,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:10,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:10,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:10,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:51:10,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 268 transitions, 2505 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:10,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:10,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:51:10,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:11,585 INFO L124 PetriNetUnfolderBase]: 3356/5111 cut-off events. [2024-06-28 02:51:11,585 INFO L125 PetriNetUnfolderBase]: For 826166/826202 co-relation queries the response was YES. [2024-06-28 02:51:11,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51133 conditions, 5111 events. 3356/5111 cut-off events. For 826166/826202 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 27086 event pairs, 732 based on Foata normal form. 4/5099 useless extension candidates. Maximal degree in co-relation 51028. Up to 4413 conditions per place. [2024-06-28 02:51:11,645 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 225 selfloop transitions, 70 changer transitions 0/312 dead transitions. [2024-06-28 02:51:11,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 312 transitions, 3699 flow [2024-06-28 02:51:11,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:51:11,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:51:11,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-28 02:51:11,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511627906976744 [2024-06-28 02:51:11,653 INFO L175 Difference]: Start difference. First operand has 219 places, 268 transitions, 2505 flow. Second operand 10 states and 194 transitions. [2024-06-28 02:51:11,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 312 transitions, 3699 flow [2024-06-28 02:51:12,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 312 transitions, 3554 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-28 02:51:12,452 INFO L231 Difference]: Finished difference. Result has 223 places, 274 transitions, 2762 flow [2024-06-28 02:51:12,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2360, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2762, PETRI_PLACES=223, PETRI_TRANSITIONS=274} [2024-06-28 02:51:12,453 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 179 predicate places. [2024-06-28 02:51:12,453 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 274 transitions, 2762 flow [2024-06-28 02:51:12,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:12,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:12,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:12,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 02:51:12,453 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:12,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:12,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1557464915, now seen corresponding path program 14 times [2024-06-28 02:51:12,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:12,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002559920] [2024-06-28 02:51:12,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:12,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:13,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:13,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:13,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002559920] [2024-06-28 02:51:13,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002559920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:13,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:13,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:13,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760910405] [2024-06-28 02:51:13,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:13,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:13,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:13,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:13,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:13,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:51:13,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 274 transitions, 2762 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:13,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:13,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:51:13,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:14,793 INFO L124 PetriNetUnfolderBase]: 3346/5097 cut-off events. [2024-06-28 02:51:14,794 INFO L125 PetriNetUnfolderBase]: For 842521/842557 co-relation queries the response was YES. [2024-06-28 02:51:14,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51449 conditions, 5097 events. 3346/5097 cut-off events. For 842521/842557 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 27055 event pairs, 727 based on Foata normal form. 4/5085 useless extension candidates. Maximal degree in co-relation 51343. Up to 4519 conditions per place. [2024-06-28 02:51:14,855 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 239 selfloop transitions, 54 changer transitions 0/310 dead transitions. [2024-06-28 02:51:14,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 310 transitions, 3446 flow [2024-06-28 02:51:14,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:51:14,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:51:14,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-28 02:51:14,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44651162790697674 [2024-06-28 02:51:14,857 INFO L175 Difference]: Start difference. First operand has 223 places, 274 transitions, 2762 flow. Second operand 10 states and 192 transitions. [2024-06-28 02:51:14,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 310 transitions, 3446 flow [2024-06-28 02:51:15,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 310 transitions, 3151 flow, removed 114 selfloop flow, removed 6 redundant places. [2024-06-28 02:51:15,691 INFO L231 Difference]: Finished difference. Result has 227 places, 274 transitions, 2583 flow [2024-06-28 02:51:15,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2467, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2583, PETRI_PLACES=227, PETRI_TRANSITIONS=274} [2024-06-28 02:51:15,691 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 183 predicate places. [2024-06-28 02:51:15,691 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 274 transitions, 2583 flow [2024-06-28 02:51:15,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:15,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:15,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:15,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 02:51:15,691 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:15,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:15,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1850204489, now seen corresponding path program 4 times [2024-06-28 02:51:15,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:15,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516341265] [2024-06-28 02:51:15,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:15,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:16,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:16,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:16,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516341265] [2024-06-28 02:51:16,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516341265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:16,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:16,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:51:16,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652145702] [2024-06-28 02:51:16,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:16,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:51:16,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:16,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:51:16,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:51:16,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:51:16,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 274 transitions, 2583 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:16,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:16,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:51:16,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:17,931 INFO L124 PetriNetUnfolderBase]: 3692/5506 cut-off events. [2024-06-28 02:51:17,931 INFO L125 PetriNetUnfolderBase]: For 874762/874798 co-relation queries the response was YES. [2024-06-28 02:51:17,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54203 conditions, 5506 events. 3692/5506 cut-off events. For 874762/874798 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 27811 event pairs, 902 based on Foata normal form. 4/5496 useless extension candidates. Maximal degree in co-relation 54095. Up to 5287 conditions per place. [2024-06-28 02:51:18,000 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 274 selfloop transitions, 19 changer transitions 0/305 dead transitions. [2024-06-28 02:51:18,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 305 transitions, 3335 flow [2024-06-28 02:51:18,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:51:18,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:51:18,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 02:51:18,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4082687338501292 [2024-06-28 02:51:18,002 INFO L175 Difference]: Start difference. First operand has 227 places, 274 transitions, 2583 flow. Second operand 9 states and 158 transitions. [2024-06-28 02:51:18,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 305 transitions, 3335 flow [2024-06-28 02:51:19,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 305 transitions, 3209 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 02:51:19,006 INFO L231 Difference]: Finished difference. Result has 228 places, 276 transitions, 2598 flow [2024-06-28 02:51:19,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2457, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2598, PETRI_PLACES=228, PETRI_TRANSITIONS=276} [2024-06-28 02:51:19,007 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 184 predicate places. [2024-06-28 02:51:19,007 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 276 transitions, 2598 flow [2024-06-28 02:51:19,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:19,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:19,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:19,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 02:51:19,007 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:19,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:19,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1893805933, now seen corresponding path program 5 times [2024-06-28 02:51:19,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:19,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397967876] [2024-06-28 02:51:19,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:19,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:19,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:19,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:19,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397967876] [2024-06-28 02:51:19,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397967876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:19,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:19,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:19,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373657851] [2024-06-28 02:51:19,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:19,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:19,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:19,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:19,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:20,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:51:20,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 276 transitions, 2598 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:20,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:20,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:51:20,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:21,205 INFO L124 PetriNetUnfolderBase]: 3709/5533 cut-off events. [2024-06-28 02:51:21,205 INFO L125 PetriNetUnfolderBase]: For 902527/902563 co-relation queries the response was YES. [2024-06-28 02:51:21,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54735 conditions, 5533 events. 3709/5533 cut-off events. For 902527/902563 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 28049 event pairs, 881 based on Foata normal form. 4/5523 useless extension candidates. Maximal degree in co-relation 54626. Up to 5300 conditions per place. [2024-06-28 02:51:21,273 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 275 selfloop transitions, 20 changer transitions 0/307 dead transitions. [2024-06-28 02:51:21,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 307 transitions, 3356 flow [2024-06-28 02:51:21,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:51:21,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:51:21,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 02:51:21,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4082687338501292 [2024-06-28 02:51:21,274 INFO L175 Difference]: Start difference. First operand has 228 places, 276 transitions, 2598 flow. Second operand 9 states and 158 transitions. [2024-06-28 02:51:21,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 307 transitions, 3356 flow [2024-06-28 02:51:22,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 307 transitions, 3235 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-28 02:51:22,224 INFO L231 Difference]: Finished difference. Result has 231 places, 278 transitions, 2624 flow [2024-06-28 02:51:22,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2477, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2624, PETRI_PLACES=231, PETRI_TRANSITIONS=278} [2024-06-28 02:51:22,225 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 187 predicate places. [2024-06-28 02:51:22,225 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 278 transitions, 2624 flow [2024-06-28 02:51:22,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:22,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:22,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:22,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 02:51:22,226 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:22,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:22,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1860323509, now seen corresponding path program 1 times [2024-06-28 02:51:22,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:22,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947579684] [2024-06-28 02:51:22,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:22,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:23,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:23,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:23,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947579684] [2024-06-28 02:51:23,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947579684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:23,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:23,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:23,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174815109] [2024-06-28 02:51:23,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:23,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:23,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:23,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:23,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:23,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:51:23,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 278 transitions, 2624 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:23,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:23,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:51:23,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:24,448 INFO L124 PetriNetUnfolderBase]: 3727/5563 cut-off events. [2024-06-28 02:51:24,448 INFO L125 PetriNetUnfolderBase]: For 916224/916224 co-relation queries the response was YES. [2024-06-28 02:51:24,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55055 conditions, 5563 events. 3727/5563 cut-off events. For 916224/916224 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 28146 event pairs, 889 based on Foata normal form. 2/5561 useless extension candidates. Maximal degree in co-relation 54945. Up to 5310 conditions per place. [2024-06-28 02:51:24,516 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 273 selfloop transitions, 28 changer transitions 0/313 dead transitions. [2024-06-28 02:51:24,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 313 transitions, 3441 flow [2024-06-28 02:51:24,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:51:24,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:51:24,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 02:51:24,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4134366925064599 [2024-06-28 02:51:24,517 INFO L175 Difference]: Start difference. First operand has 231 places, 278 transitions, 2624 flow. Second operand 9 states and 160 transitions. [2024-06-28 02:51:24,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 313 transitions, 3441 flow [2024-06-28 02:51:25,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 313 transitions, 3312 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-28 02:51:25,622 INFO L231 Difference]: Finished difference. Result has 233 places, 284 transitions, 2714 flow [2024-06-28 02:51:25,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2495, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2714, PETRI_PLACES=233, PETRI_TRANSITIONS=284} [2024-06-28 02:51:25,622 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 189 predicate places. [2024-06-28 02:51:25,622 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 284 transitions, 2714 flow [2024-06-28 02:51:25,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:25,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:25,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:25,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 02:51:25,623 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:25,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:25,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1860323819, now seen corresponding path program 6 times [2024-06-28 02:51:25,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:25,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159496242] [2024-06-28 02:51:25,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:25,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:26,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:26,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:26,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159496242] [2024-06-28 02:51:26,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159496242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:26,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:26,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:26,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447309221] [2024-06-28 02:51:26,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:26,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:26,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:26,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:26,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:26,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:51:26,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 284 transitions, 2714 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:26,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:26,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:51:26,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:27,966 INFO L124 PetriNetUnfolderBase]: 3719/5551 cut-off events. [2024-06-28 02:51:27,966 INFO L125 PetriNetUnfolderBase]: For 933844/933844 co-relation queries the response was YES. [2024-06-28 02:51:28,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55153 conditions, 5551 events. 3719/5551 cut-off events. For 933844/933844 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 28106 event pairs, 887 based on Foata normal form. 4/5551 useless extension candidates. Maximal degree in co-relation 55042. Up to 5294 conditions per place. [2024-06-28 02:51:28,034 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 277 selfloop transitions, 26 changer transitions 0/315 dead transitions. [2024-06-28 02:51:28,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 315 transitions, 3496 flow [2024-06-28 02:51:28,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:51:28,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:51:28,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 02:51:28,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4108527131782946 [2024-06-28 02:51:28,035 INFO L175 Difference]: Start difference. First operand has 233 places, 284 transitions, 2714 flow. Second operand 9 states and 159 transitions. [2024-06-28 02:51:28,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 315 transitions, 3496 flow [2024-06-28 02:51:29,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 315 transitions, 3360 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-28 02:51:29,070 INFO L231 Difference]: Finished difference. Result has 235 places, 286 transitions, 2746 flow [2024-06-28 02:51:29,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2578, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2746, PETRI_PLACES=235, PETRI_TRANSITIONS=286} [2024-06-28 02:51:29,071 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 191 predicate places. [2024-06-28 02:51:29,071 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 286 transitions, 2746 flow [2024-06-28 02:51:29,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:29,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:29,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:29,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 02:51:29,071 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)] === [2024-06-28 02:51:29,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:29,072 INFO L85 PathProgramCache]: Analyzing trace with hash 273147949, now seen corresponding path program 2 times [2024-06-28 02:51:29,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:29,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538049854] [2024-06-28 02:51:29,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:29,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:29,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:29,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:29,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538049854] [2024-06-28 02:51:29,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538049854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:29,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:29,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:51:29,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241909272] [2024-06-28 02:51:29,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:29,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:51:29,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:29,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:51:29,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:51:29,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:51:29,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 286 transitions, 2746 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) [2024-06-28 02:51:29,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:29,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:51:29,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:30,811 INFO L124 PetriNetUnfolderBase]: 3466/5269 cut-off events. [2024-06-28 02:51:30,811 INFO L125 PetriNetUnfolderBase]: For 950954/950965 co-relation queries the response was YES. [2024-06-28 02:51:30,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53643 conditions, 5269 events. 3466/5269 cut-off events. For 950954/950965 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 27519 event pairs, 913 based on Foata normal form. 9/5248 useless extension candidates. Maximal degree in co-relation 53531. Up to 4933 conditions per place. [2024-06-28 02:51:30,877 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 247 selfloop transitions, 14 changer transitions 0/301 dead transitions. [2024-06-28 02:51:30,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 301 transitions, 3340 flow [2024-06-28 02:51:30,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:51:30,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:51:30,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 02:51:30,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40863787375415284 [2024-06-28 02:51:30,878 INFO L175 Difference]: Start difference. First operand has 235 places, 286 transitions, 2746 flow. Second operand 7 states and 123 transitions. [2024-06-28 02:51:30,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 301 transitions, 3340 flow [2024-06-28 02:51:32,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 301 transitions, 3192 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-28 02:51:32,029 INFO L231 Difference]: Finished difference. Result has 235 places, 289 transitions, 2680 flow [2024-06-28 02:51:32,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2598, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2680, PETRI_PLACES=235, PETRI_TRANSITIONS=289} [2024-06-28 02:51:32,030 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 191 predicate places. [2024-06-28 02:51:32,030 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 289 transitions, 2680 flow [2024-06-28 02:51:32,030 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) [2024-06-28 02:51:32,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:32,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:32,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 02:51:32,030 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)] === [2024-06-28 02:51:32,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:32,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1451023235, now seen corresponding path program 3 times [2024-06-28 02:51:32,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:32,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606474637] [2024-06-28 02:51:32,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:32,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:32,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:32,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:32,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606474637] [2024-06-28 02:51:32,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606474637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:32,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:32,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:51:32,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295020052] [2024-06-28 02:51:32,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:32,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:51:32,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:32,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:51:32,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:51:32,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:51:32,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 289 transitions, 2680 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) [2024-06-28 02:51:32,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:32,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:51:32,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:33,927 INFO L124 PetriNetUnfolderBase]: 3460/5261 cut-off events. [2024-06-28 02:51:33,927 INFO L125 PetriNetUnfolderBase]: For 936429/936440 co-relation queries the response was YES. [2024-06-28 02:51:33,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52979 conditions, 5261 events. 3460/5261 cut-off events. For 936429/936440 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 27445 event pairs, 912 based on Foata normal form. 8/5239 useless extension candidates. Maximal degree in co-relation 52866. Up to 4932 conditions per place. [2024-06-28 02:51:33,992 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 245 selfloop transitions, 14 changer transitions 0/299 dead transitions. [2024-06-28 02:51:33,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 299 transitions, 3222 flow [2024-06-28 02:51:33,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:51:33,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:51:33,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 02:51:33,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4019933554817276 [2024-06-28 02:51:33,993 INFO L175 Difference]: Start difference. First operand has 235 places, 289 transitions, 2680 flow. Second operand 7 states and 121 transitions. [2024-06-28 02:51:33,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 299 transitions, 3222 flow [2024-06-28 02:51:35,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 299 transitions, 3148 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 02:51:35,229 INFO L231 Difference]: Finished difference. Result has 237 places, 289 transitions, 2640 flow [2024-06-28 02:51:35,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2606, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2640, PETRI_PLACES=237, PETRI_TRANSITIONS=289} [2024-06-28 02:51:35,229 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 193 predicate places. [2024-06-28 02:51:35,229 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 289 transitions, 2640 flow [2024-06-28 02:51:35,229 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) [2024-06-28 02:51:35,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:35,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:35,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 02:51:35,230 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)] === [2024-06-28 02:51:35,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:35,230 INFO L85 PathProgramCache]: Analyzing trace with hash 2027912333, now seen corresponding path program 3 times [2024-06-28 02:51:35,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:35,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087035647] [2024-06-28 02:51:35,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:35,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:35,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:35,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:35,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087035647] [2024-06-28 02:51:35,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087035647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:35,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:35,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:51:35,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679145373] [2024-06-28 02:51:35,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:35,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:51:35,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:35,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:51:35,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:51:36,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:51:36,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 289 transitions, 2640 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) [2024-06-28 02:51:36,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:36,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:51:36,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:37,019 INFO L124 PetriNetUnfolderBase]: 3451/5249 cut-off events. [2024-06-28 02:51:37,019 INFO L125 PetriNetUnfolderBase]: For 950209/950220 co-relation queries the response was YES. [2024-06-28 02:51:37,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52878 conditions, 5249 events. 3451/5249 cut-off events. For 950209/950220 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 27431 event pairs, 910 based on Foata normal form. 9/5228 useless extension candidates. Maximal degree in co-relation 52765. Up to 4902 conditions per place. [2024-06-28 02:51:37,086 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 244 selfloop transitions, 19 changer transitions 0/303 dead transitions. [2024-06-28 02:51:37,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 303 transitions, 3202 flow [2024-06-28 02:51:37,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:51:37,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:51:37,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 02:51:37,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4219269102990033 [2024-06-28 02:51:37,088 INFO L175 Difference]: Start difference. First operand has 237 places, 289 transitions, 2640 flow. Second operand 7 states and 127 transitions. [2024-06-28 02:51:37,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 303 transitions, 3202 flow [2024-06-28 02:51:38,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 303 transitions, 3136 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 02:51:38,151 INFO L231 Difference]: Finished difference. Result has 238 places, 289 transitions, 2618 flow [2024-06-28 02:51:38,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2574, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2618, PETRI_PLACES=238, PETRI_TRANSITIONS=289} [2024-06-28 02:51:38,152 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 194 predicate places. [2024-06-28 02:51:38,152 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 289 transitions, 2618 flow [2024-06-28 02:51:38,152 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) [2024-06-28 02:51:38,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:38,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:38,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 02:51:38,152 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)] === [2024-06-28 02:51:38,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:38,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1069817656, now seen corresponding path program 1 times [2024-06-28 02:51:38,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:38,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129578219] [2024-06-28 02:51:38,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:38,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:38,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:38,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:38,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129578219] [2024-06-28 02:51:38,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129578219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:38,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:38,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:51:38,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863618638] [2024-06-28 02:51:38,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:38,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:51:38,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:38,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:51:38,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:51:38,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-06-28 02:51:38,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 289 transitions, 2618 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:38,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:38,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-06-28 02:51:38,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:40,115 INFO L124 PetriNetUnfolderBase]: 3884/5719 cut-off events. [2024-06-28 02:51:40,116 INFO L125 PetriNetUnfolderBase]: For 967174/967174 co-relation queries the response was YES. [2024-06-28 02:51:40,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56107 conditions, 5719 events. 3884/5719 cut-off events. For 967174/967174 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 28253 event pairs, 960 based on Foata normal form. 1/5718 useless extension candidates. Maximal degree in co-relation 55993. Up to 5671 conditions per place. [2024-06-28 02:51:40,178 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 285 selfloop transitions, 24 changer transitions 0/312 dead transitions. [2024-06-28 02:51:40,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 312 transitions, 3502 flow [2024-06-28 02:51:40,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:51:40,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:51:40,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 02:51:40,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3953488372093023 [2024-06-28 02:51:40,179 INFO L175 Difference]: Start difference. First operand has 238 places, 289 transitions, 2618 flow. Second operand 7 states and 119 transitions. [2024-06-28 02:51:40,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 312 transitions, 3502 flow [2024-06-28 02:51:41,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 312 transitions, 3434 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 02:51:41,384 INFO L231 Difference]: Finished difference. Result has 239 places, 295 transitions, 2682 flow [2024-06-28 02:51:41,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2550, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2682, PETRI_PLACES=239, PETRI_TRANSITIONS=295} [2024-06-28 02:51:41,384 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 195 predicate places. [2024-06-28 02:51:41,384 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 295 transitions, 2682 flow [2024-06-28 02:51:41,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:41,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:41,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:41,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 02:51:41,385 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)] === [2024-06-28 02:51:41,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:41,385 INFO L85 PathProgramCache]: Analyzing trace with hash -322228357, now seen corresponding path program 1 times [2024-06-28 02:51:41,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:41,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850201637] [2024-06-28 02:51:41,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:41,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:42,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:42,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:42,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850201637] [2024-06-28 02:51:42,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850201637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:42,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:42,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:51:42,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828827220] [2024-06-28 02:51:42,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:42,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:51:42,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:42,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:51:42,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:51:42,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-06-28 02:51:42,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 295 transitions, 2682 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:42,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:42,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-06-28 02:51:42,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:43,392 INFO L124 PetriNetUnfolderBase]: 3899/5740 cut-off events. [2024-06-28 02:51:43,393 INFO L125 PetriNetUnfolderBase]: For 998553/998553 co-relation queries the response was YES. [2024-06-28 02:51:43,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57064 conditions, 5740 events. 3899/5740 cut-off events. For 998553/998553 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 28326 event pairs, 957 based on Foata normal form. 3/5741 useless extension candidates. Maximal degree in co-relation 56949. Up to 5672 conditions per place. [2024-06-28 02:51:43,458 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 292 selfloop transitions, 25 changer transitions 0/320 dead transitions. [2024-06-28 02:51:43,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 320 transitions, 3626 flow [2024-06-28 02:51:43,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:51:43,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:51:43,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 02:51:43,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40863787375415284 [2024-06-28 02:51:43,459 INFO L175 Difference]: Start difference. First operand has 239 places, 295 transitions, 2682 flow. Second operand 7 states and 123 transitions. [2024-06-28 02:51:43,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 320 transitions, 3626 flow [2024-06-28 02:51:44,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 320 transitions, 3562 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-28 02:51:44,488 INFO L231 Difference]: Finished difference. Result has 243 places, 301 transitions, 2788 flow [2024-06-28 02:51:44,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2618, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2788, PETRI_PLACES=243, PETRI_TRANSITIONS=301} [2024-06-28 02:51:44,488 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 199 predicate places. [2024-06-28 02:51:44,488 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 301 transitions, 2788 flow [2024-06-28 02:51:44,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:44,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:44,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:44,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 02:51:44,488 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)] === [2024-06-28 02:51:44,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:44,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1069967386, now seen corresponding path program 2 times [2024-06-28 02:51:44,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:44,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879010093] [2024-06-28 02:51:44,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:44,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:45,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:45,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:45,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879010093] [2024-06-28 02:51:45,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879010093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:45,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:45,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:51:45,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569346747] [2024-06-28 02:51:45,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:45,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:51:45,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:45,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:51:45,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:51:45,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-06-28 02:51:45,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 301 transitions, 2788 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:45,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:45,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-06-28 02:51:45,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:46,519 INFO L124 PetriNetUnfolderBase]: 3904/5747 cut-off events. [2024-06-28 02:51:46,519 INFO L125 PetriNetUnfolderBase]: For 1016800/1016800 co-relation queries the response was YES. [2024-06-28 02:51:46,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57516 conditions, 5747 events. 3904/5747 cut-off events. For 1016800/1016800 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 28412 event pairs, 960 based on Foata normal form. 1/5746 useless extension candidates. Maximal degree in co-relation 57399. Up to 5698 conditions per place. [2024-06-28 02:51:46,584 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 289 selfloop transitions, 26 changer transitions 0/318 dead transitions. [2024-06-28 02:51:46,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 318 transitions, 3636 flow [2024-06-28 02:51:46,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:51:46,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:51:46,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 02:51:46,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38870431893687707 [2024-06-28 02:51:46,585 INFO L175 Difference]: Start difference. First operand has 243 places, 301 transitions, 2788 flow. Second operand 7 states and 117 transitions. [2024-06-28 02:51:46,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 318 transitions, 3636 flow [2024-06-28 02:51:47,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 318 transitions, 3566 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-28 02:51:47,846 INFO L231 Difference]: Finished difference. Result has 247 places, 304 transitions, 2804 flow [2024-06-28 02:51:47,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2718, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2804, PETRI_PLACES=247, PETRI_TRANSITIONS=304} [2024-06-28 02:51:47,846 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 203 predicate places. [2024-06-28 02:51:47,846 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 304 transitions, 2804 flow [2024-06-28 02:51:47,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:47,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:47,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:47,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 02:51:47,847 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)] === [2024-06-28 02:51:47,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:47,847 INFO L85 PathProgramCache]: Analyzing trace with hash -92964757, now seen corresponding path program 2 times [2024-06-28 02:51:47,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:47,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313558960] [2024-06-28 02:51:47,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:47,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:48,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:48,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:48,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313558960] [2024-06-28 02:51:48,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313558960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:48,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:48,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:51:48,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116086355] [2024-06-28 02:51:48,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:48,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:51:48,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:48,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:51:48,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:51:48,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-06-28 02:51:48,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 304 transitions, 2804 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:48,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:48,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-06-28 02:51:48,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:49,893 INFO L124 PetriNetUnfolderBase]: 3919/5769 cut-off events. [2024-06-28 02:51:49,894 INFO L125 PetriNetUnfolderBase]: For 1046179/1046182 co-relation queries the response was YES. [2024-06-28 02:51:49,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57918 conditions, 5769 events. 3919/5769 cut-off events. For 1046179/1046182 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 28508 event pairs, 959 based on Foata normal form. 5/5771 useless extension candidates. Maximal degree in co-relation 57799. Up to 5693 conditions per place. [2024-06-28 02:51:49,957 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 290 selfloop transitions, 29 changer transitions 0/322 dead transitions. [2024-06-28 02:51:49,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 322 transitions, 3692 flow [2024-06-28 02:51:49,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:51:49,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:51:49,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 02:51:49,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38870431893687707 [2024-06-28 02:51:49,958 INFO L175 Difference]: Start difference. First operand has 247 places, 304 transitions, 2804 flow. Second operand 7 states and 117 transitions. [2024-06-28 02:51:49,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 322 transitions, 3692 flow [2024-06-28 02:51:51,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 322 transitions, 3640 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 02:51:51,197 INFO L231 Difference]: Finished difference. Result has 250 places, 307 transitions, 2871 flow [2024-06-28 02:51:51,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2752, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2871, PETRI_PLACES=250, PETRI_TRANSITIONS=307} [2024-06-28 02:51:51,198 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 206 predicate places. [2024-06-28 02:51:51,198 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 307 transitions, 2871 flow [2024-06-28 02:51:51,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:51,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:51,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:51,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 02:51:51,198 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)] === [2024-06-28 02:51:51,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:51,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1450807754, now seen corresponding path program 3 times [2024-06-28 02:51:51,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:51,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367599516] [2024-06-28 02:51:51,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:51,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:51,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:51,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:51,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367599516] [2024-06-28 02:51:51,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367599516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:51,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:51,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:51:51,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326591440] [2024-06-28 02:51:51,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:51,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:51:51,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:51,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:51:51,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:51:51,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-06-28 02:51:51,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 307 transitions, 2871 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:51,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:51,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-06-28 02:51:51,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:53,187 INFO L124 PetriNetUnfolderBase]: 3916/5765 cut-off events. [2024-06-28 02:51:53,187 INFO L125 PetriNetUnfolderBase]: For 1060825/1060828 co-relation queries the response was YES. [2024-06-28 02:51:53,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58162 conditions, 5765 events. 3916/5765 cut-off events. For 1060825/1060828 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 28523 event pairs, 968 based on Foata normal form. 1/5763 useless extension candidates. Maximal degree in co-relation 58042. Up to 5716 conditions per place. [2024-06-28 02:51:53,254 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 288 selfloop transitions, 26 changer transitions 0/317 dead transitions. [2024-06-28 02:51:53,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 317 transitions, 3523 flow [2024-06-28 02:51:53,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:51:53,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:51:53,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-28 02:51:53,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3754152823920266 [2024-06-28 02:51:53,255 INFO L175 Difference]: Start difference. First operand has 250 places, 307 transitions, 2871 flow. Second operand 7 states and 113 transitions. [2024-06-28 02:51:53,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 317 transitions, 3523 flow [2024-06-28 02:51:54,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 317 transitions, 3418 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-28 02:51:54,603 INFO L231 Difference]: Finished difference. Result has 253 places, 307 transitions, 2824 flow [2024-06-28 02:51:54,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2766, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2824, PETRI_PLACES=253, PETRI_TRANSITIONS=307} [2024-06-28 02:51:54,603 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 209 predicate places. [2024-06-28 02:51:54,603 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 307 transitions, 2824 flow [2024-06-28 02:51:54,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:54,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:54,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:54,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 02:51:54,604 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)] === [2024-06-28 02:51:54,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:54,604 INFO L85 PathProgramCache]: Analyzing trace with hash 272887983, now seen corresponding path program 3 times [2024-06-28 02:51:54,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:54,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67313073] [2024-06-28 02:51:54,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:54,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:55,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:55,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:55,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67313073] [2024-06-28 02:51:55,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67313073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:55,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:55,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:51:55,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495688929] [2024-06-28 02:51:55,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:55,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:51:55,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:55,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:51:55,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:51:55,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-06-28 02:51:55,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 307 transitions, 2824 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:55,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:55,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-06-28 02:51:55,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:56,655 INFO L124 PetriNetUnfolderBase]: 3907/5753 cut-off events. [2024-06-28 02:51:56,655 INFO L125 PetriNetUnfolderBase]: For 1080214/1080217 co-relation queries the response was YES. [2024-06-28 02:51:56,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57939 conditions, 5753 events. 3907/5753 cut-off events. For 1080214/1080217 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 28520 event pairs, 957 based on Foata normal form. 5/5755 useless extension candidates. Maximal degree in co-relation 57818. Up to 5682 conditions per place. [2024-06-28 02:51:56,725 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 292 selfloop transitions, 28 changer transitions 0/323 dead transitions. [2024-06-28 02:51:56,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 323 transitions, 3506 flow [2024-06-28 02:51:56,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:51:56,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:51:56,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 02:51:56,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3953488372093023 [2024-06-28 02:51:56,726 INFO L175 Difference]: Start difference. First operand has 253 places, 307 transitions, 2824 flow. Second operand 7 states and 119 transitions. [2024-06-28 02:51:56,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 323 transitions, 3506 flow [2024-06-28 02:51:57,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 323 transitions, 3396 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 02:51:58,002 INFO L231 Difference]: Finished difference. Result has 252 places, 307 transitions, 2776 flow [2024-06-28 02:51:58,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2714, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2776, PETRI_PLACES=252, PETRI_TRANSITIONS=307} [2024-06-28 02:51:58,002 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 208 predicate places. [2024-06-28 02:51:58,002 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 307 transitions, 2776 flow [2024-06-28 02:51:58,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:58,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:58,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:58,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 02:51:58,003 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:58,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:58,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1550398034, now seen corresponding path program 1 times [2024-06-28 02:51:58,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:58,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067791461] [2024-06-28 02:51:58,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:58,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:59,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:59,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:59,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067791461] [2024-06-28 02:51:59,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067791461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:59,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:59,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:59,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273572854] [2024-06-28 02:51:59,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:59,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:59,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:59,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:59,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:59,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:51:59,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 307 transitions, 2776 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:59,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:59,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:51:59,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:01,430 INFO L124 PetriNetUnfolderBase]: 3671/5605 cut-off events. [2024-06-28 02:52:01,430 INFO L125 PetriNetUnfolderBase]: For 1215710/1215710 co-relation queries the response was YES. [2024-06-28 02:52:01,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60129 conditions, 5605 events. 3671/5605 cut-off events. For 1215710/1215710 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 30419 event pairs, 701 based on Foata normal form. 16/5599 useless extension candidates. Maximal degree in co-relation 60008. Up to 4723 conditions per place. [2024-06-28 02:52:01,501 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 310 selfloop transitions, 42 changer transitions 0/375 dead transitions. [2024-06-28 02:52:01,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 375 transitions, 4192 flow [2024-06-28 02:52:01,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:52:01,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:52:01,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 243 transitions. [2024-06-28 02:52:01,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47093023255813954 [2024-06-28 02:52:01,502 INFO L175 Difference]: Start difference. First operand has 252 places, 307 transitions, 2776 flow. Second operand 12 states and 243 transitions. [2024-06-28 02:52:01,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 375 transitions, 4192 flow [2024-06-28 02:52:02,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 375 transitions, 4111 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 02:52:02,858 INFO L231 Difference]: Finished difference. Result has 257 places, 309 transitions, 2943 flow [2024-06-28 02:52:02,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2695, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2943, PETRI_PLACES=257, PETRI_TRANSITIONS=309} [2024-06-28 02:52:02,859 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 213 predicate places. [2024-06-28 02:52:02,859 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 309 transitions, 2943 flow [2024-06-28 02:52:02,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:02,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:02,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:02,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 02:52:02,859 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:02,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:02,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1552275704, now seen corresponding path program 2 times [2024-06-28 02:52:02,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:02,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274802114] [2024-06-28 02:52:02,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:02,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:04,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:04,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:04,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274802114] [2024-06-28 02:52:04,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274802114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:04,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:04,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:04,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831634366] [2024-06-28 02:52:04,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:04,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:04,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:04,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:04,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:04,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:52:04,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 309 transitions, 2943 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:04,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:04,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:52:04,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:05,981 INFO L124 PetriNetUnfolderBase]: 3730/5720 cut-off events. [2024-06-28 02:52:05,981 INFO L125 PetriNetUnfolderBase]: For 1265110/1265110 co-relation queries the response was YES. [2024-06-28 02:52:06,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61626 conditions, 5720 events. 3730/5720 cut-off events. For 1265110/1265110 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 31444 event pairs, 867 based on Foata normal form. 24/5722 useless extension candidates. Maximal degree in co-relation 61504. Up to 5083 conditions per place. [2024-06-28 02:52:06,062 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 297 selfloop transitions, 37 changer transitions 0/357 dead transitions. [2024-06-28 02:52:06,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 357 transitions, 3877 flow [2024-06-28 02:52:06,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:52:06,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:52:06,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-28 02:52:06,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627906976744186 [2024-06-28 02:52:06,064 INFO L175 Difference]: Start difference. First operand has 257 places, 309 transitions, 2943 flow. Second operand 10 states and 199 transitions. [2024-06-28 02:52:06,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 357 transitions, 3877 flow [2024-06-28 02:52:07,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 357 transitions, 3778 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 02:52:07,486 INFO L231 Difference]: Finished difference. Result has 259 places, 311 transitions, 3027 flow [2024-06-28 02:52:07,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2848, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3027, PETRI_PLACES=259, PETRI_TRANSITIONS=311} [2024-06-28 02:52:07,487 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 215 predicate places. [2024-06-28 02:52:07,487 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 311 transitions, 3027 flow [2024-06-28 02:52:07,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:07,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:07,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:07,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 02:52:07,487 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:07,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:07,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1102529028, now seen corresponding path program 3 times [2024-06-28 02:52:07,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:07,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933394098] [2024-06-28 02:52:07,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:07,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:08,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:08,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:08,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933394098] [2024-06-28 02:52:08,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933394098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:08,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:08,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:08,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390201683] [2024-06-28 02:52:08,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:08,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:08,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:08,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:08,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:09,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:52:09,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 311 transitions, 3027 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:09,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:09,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:52:09,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:10,573 INFO L124 PetriNetUnfolderBase]: 3738/5740 cut-off events. [2024-06-28 02:52:10,573 INFO L125 PetriNetUnfolderBase]: For 1250051/1250051 co-relation queries the response was YES. [2024-06-28 02:52:10,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61362 conditions, 5740 events. 3738/5740 cut-off events. For 1250051/1250051 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 31639 event pairs, 854 based on Foata normal form. 16/5734 useless extension candidates. Maximal degree in co-relation 61238. Up to 4870 conditions per place. [2024-06-28 02:52:10,650 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 302 selfloop transitions, 39 changer transitions 0/364 dead transitions. [2024-06-28 02:52:10,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 364 transitions, 4305 flow [2024-06-28 02:52:10,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:52:10,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:52:10,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-06-28 02:52:10,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744186046511628 [2024-06-28 02:52:10,651 INFO L175 Difference]: Start difference. First operand has 259 places, 311 transitions, 3027 flow. Second operand 10 states and 204 transitions. [2024-06-28 02:52:10,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 364 transitions, 4305 flow [2024-06-28 02:52:12,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 364 transitions, 4202 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 02:52:12,300 INFO L231 Difference]: Finished difference. Result has 261 places, 312 transitions, 3087 flow [2024-06-28 02:52:12,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2924, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3087, PETRI_PLACES=261, PETRI_TRANSITIONS=312} [2024-06-28 02:52:12,300 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 217 predicate places. [2024-06-28 02:52:12,300 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 312 transitions, 3087 flow [2024-06-28 02:52:12,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:12,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:12,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:12,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 02:52:12,300 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:12,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:12,301 INFO L85 PathProgramCache]: Analyzing trace with hash 918026488, now seen corresponding path program 4 times [2024-06-28 02:52:12,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:12,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292032849] [2024-06-28 02:52:12,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:12,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:13,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:13,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:13,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292032849] [2024-06-28 02:52:13,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292032849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:13,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:13,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:13,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041083277] [2024-06-28 02:52:13,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:13,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:13,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:13,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:13,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:13,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:52:13,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 312 transitions, 3087 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:13,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:13,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:52:13,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:14,914 INFO L124 PetriNetUnfolderBase]: 3803/5861 cut-off events. [2024-06-28 02:52:14,914 INFO L125 PetriNetUnfolderBase]: For 1305577/1305580 co-relation queries the response was YES. [2024-06-28 02:52:14,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62503 conditions, 5861 events. 3803/5861 cut-off events. For 1305577/1305580 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 32627 event pairs, 748 based on Foata normal form. 24/5862 useless extension candidates. Maximal degree in co-relation 62378. Up to 4364 conditions per place. [2024-06-28 02:52:14,991 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 198 selfloop transitions, 140 changer transitions 0/361 dead transitions. [2024-06-28 02:52:14,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 361 transitions, 4039 flow [2024-06-28 02:52:14,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:52:14,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:52:14,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 211 transitions. [2024-06-28 02:52:14,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4906976744186046 [2024-06-28 02:52:14,992 INFO L175 Difference]: Start difference. First operand has 261 places, 312 transitions, 3087 flow. Second operand 10 states and 211 transitions. [2024-06-28 02:52:14,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 361 transitions, 4039 flow [2024-06-28 02:52:16,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 361 transitions, 3916 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 02:52:16,571 INFO L231 Difference]: Finished difference. Result has 263 places, 313 transitions, 3334 flow [2024-06-28 02:52:16,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2964, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3334, PETRI_PLACES=263, PETRI_TRANSITIONS=313} [2024-06-28 02:52:16,572 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 219 predicate places. [2024-06-28 02:52:16,572 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 313 transitions, 3334 flow [2024-06-28 02:52:16,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:16,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:16,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:16,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 02:52:16,572 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:16,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:16,573 INFO L85 PathProgramCache]: Analyzing trace with hash 918022768, now seen corresponding path program 5 times [2024-06-28 02:52:16,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:16,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180243886] [2024-06-28 02:52:16,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:16,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:17,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:17,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:17,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180243886] [2024-06-28 02:52:17,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180243886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:17,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:17,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:17,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801608373] [2024-06-28 02:52:17,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:17,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:17,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:17,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:17,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:17,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:52:17,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 313 transitions, 3334 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:17,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:17,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:52:17,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:19,383 INFO L124 PetriNetUnfolderBase]: 4026/6217 cut-off events. [2024-06-28 02:52:19,383 INFO L125 PetriNetUnfolderBase]: For 1415946/1415949 co-relation queries the response was YES. [2024-06-28 02:52:19,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68938 conditions, 6217 events. 4026/6217 cut-off events. For 1415946/1415949 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 35220 event pairs, 787 based on Foata normal form. 16/6210 useless extension candidates. Maximal degree in co-relation 68812. Up to 4407 conditions per place. [2024-06-28 02:52:19,462 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 203 selfloop transitions, 142 changer transitions 0/368 dead transitions. [2024-06-28 02:52:19,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 368 transitions, 4732 flow [2024-06-28 02:52:19,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:52:19,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:52:19,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 214 transitions. [2024-06-28 02:52:19,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49767441860465117 [2024-06-28 02:52:19,463 INFO L175 Difference]: Start difference. First operand has 263 places, 313 transitions, 3334 flow. Second operand 10 states and 214 transitions. [2024-06-28 02:52:19,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 368 transitions, 4732 flow [2024-06-28 02:52:21,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 368 transitions, 4422 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 02:52:21,272 INFO L231 Difference]: Finished difference. Result has 265 places, 315 transitions, 3480 flow [2024-06-28 02:52:21,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3024, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3480, PETRI_PLACES=265, PETRI_TRANSITIONS=315} [2024-06-28 02:52:21,272 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 221 predicate places. [2024-06-28 02:52:21,272 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 315 transitions, 3480 flow [2024-06-28 02:52:21,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:21,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:21,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:21,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 02:52:21,273 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:21,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:21,273 INFO L85 PathProgramCache]: Analyzing trace with hash 923533018, now seen corresponding path program 6 times [2024-06-28 02:52:21,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:21,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001845718] [2024-06-28 02:52:21,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:21,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:22,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:22,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:22,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001845718] [2024-06-28 02:52:22,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001845718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:22,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:22,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:22,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335189554] [2024-06-28 02:52:22,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:22,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:22,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:22,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:22,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:22,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:52:22,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 315 transitions, 3480 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:22,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:22,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:52:22,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:24,070 INFO L124 PetriNetUnfolderBase]: 3982/6154 cut-off events. [2024-06-28 02:52:24,070 INFO L125 PetriNetUnfolderBase]: For 1388850/1388853 co-relation queries the response was YES. [2024-06-28 02:52:24,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66412 conditions, 6154 events. 3982/6154 cut-off events. For 1388850/1388853 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 34854 event pairs, 782 based on Foata normal form. 24/6155 useless extension candidates. Maximal degree in co-relation 66285. Up to 4653 conditions per place. [2024-06-28 02:52:24,153 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 196 selfloop transitions, 143 changer transitions 0/362 dead transitions. [2024-06-28 02:52:24,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 362 transitions, 4350 flow [2024-06-28 02:52:24,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:52:24,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:52:24,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 209 transitions. [2024-06-28 02:52:24,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48604651162790696 [2024-06-28 02:52:24,154 INFO L175 Difference]: Start difference. First operand has 265 places, 315 transitions, 3480 flow. Second operand 10 states and 209 transitions. [2024-06-28 02:52:24,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 362 transitions, 4350 flow [2024-06-28 02:52:25,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 362 transitions, 4111 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-28 02:52:25,999 INFO L231 Difference]: Finished difference. Result has 269 places, 315 transitions, 3535 flow [2024-06-28 02:52:26,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3241, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3535, PETRI_PLACES=269, PETRI_TRANSITIONS=315} [2024-06-28 02:52:26,000 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 225 predicate places. [2024-06-28 02:52:26,000 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 315 transitions, 3535 flow [2024-06-28 02:52:26,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:26,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:26,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:26,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 02:52:26,000 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:26,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:26,001 INFO L85 PathProgramCache]: Analyzing trace with hash 923748499, now seen corresponding path program 1 times [2024-06-28 02:52:26,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:26,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926585947] [2024-06-28 02:52:26,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:26,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:27,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:27,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:27,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926585947] [2024-06-28 02:52:27,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926585947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:27,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:27,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:27,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045102912] [2024-06-28 02:52:27,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:27,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:27,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:27,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:27,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:27,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:52:27,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 315 transitions, 3535 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:27,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:27,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:52:27,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:28,878 INFO L124 PetriNetUnfolderBase]: 4411/6669 cut-off events. [2024-06-28 02:52:28,878 INFO L125 PetriNetUnfolderBase]: For 1377727/1377730 co-relation queries the response was YES. [2024-06-28 02:52:28,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70532 conditions, 6669 events. 4411/6669 cut-off events. For 1377727/1377730 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 36143 event pairs, 966 based on Foata normal form. 4/6665 useless extension candidates. Maximal degree in co-relation 70403. Up to 6075 conditions per place. [2024-06-28 02:52:28,965 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 276 selfloop transitions, 71 changer transitions 0/362 dead transitions. [2024-06-28 02:52:28,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 362 transitions, 4468 flow [2024-06-28 02:52:28,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:52:28,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:52:28,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-28 02:52:28,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4441860465116279 [2024-06-28 02:52:28,966 INFO L175 Difference]: Start difference. First operand has 269 places, 315 transitions, 3535 flow. Second operand 10 states and 191 transitions. [2024-06-28 02:52:28,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 362 transitions, 4468 flow [2024-06-28 02:52:30,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 362 transitions, 4167 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 02:52:30,637 INFO L231 Difference]: Finished difference. Result has 271 places, 320 transitions, 3514 flow [2024-06-28 02:52:30,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3238, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3514, PETRI_PLACES=271, PETRI_TRANSITIONS=320} [2024-06-28 02:52:30,637 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 227 predicate places. [2024-06-28 02:52:30,637 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 320 transitions, 3514 flow [2024-06-28 02:52:30,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:30,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:30,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:30,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 02:52:30,638 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)] === [2024-06-28 02:52:30,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:30,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1943023931, now seen corresponding path program 1 times [2024-06-28 02:52:30,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:30,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208474356] [2024-06-28 02:52:30,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:30,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:31,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:31,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:31,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208474356] [2024-06-28 02:52:31,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208474356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:31,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:31,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:52:31,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746091064] [2024-06-28 02:52:31,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:31,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:52:31,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:31,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:52:31,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:52:31,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:52:31,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 320 transitions, 3514 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) [2024-06-28 02:52:31,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:31,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:52:31,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:33,005 INFO L124 PetriNetUnfolderBase]: 4136/6367 cut-off events. [2024-06-28 02:52:33,005 INFO L125 PetriNetUnfolderBase]: For 1413314/1413327 co-relation queries the response was YES. [2024-06-28 02:52:33,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69240 conditions, 6367 events. 4136/6367 cut-off events. For 1413314/1413327 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 35548 event pairs, 1075 based on Foata normal form. 8/6335 useless extension candidates. Maximal degree in co-relation 69109. Up to 5880 conditions per place. [2024-06-28 02:52:33,091 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 266 selfloop transitions, 43 changer transitions 0/354 dead transitions. [2024-06-28 02:52:33,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 354 transitions, 4462 flow [2024-06-28 02:52:33,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:52:33,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:52:33,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-28 02:52:33,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45930232558139533 [2024-06-28 02:52:33,092 INFO L175 Difference]: Start difference. First operand has 271 places, 320 transitions, 3514 flow. Second operand 8 states and 158 transitions. [2024-06-28 02:52:33,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 354 transitions, 4462 flow [2024-06-28 02:52:34,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 354 transitions, 4229 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-28 02:52:34,400 INFO L231 Difference]: Finished difference. Result has 273 places, 327 transitions, 3486 flow [2024-06-28 02:52:34,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3281, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3486, PETRI_PLACES=273, PETRI_TRANSITIONS=327} [2024-06-28 02:52:34,401 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 229 predicate places. [2024-06-28 02:52:34,401 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 327 transitions, 3486 flow [2024-06-28 02:52:34,401 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) [2024-06-28 02:52:34,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:34,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:34,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 02:52:34,401 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)] === [2024-06-28 02:52:34,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:34,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1938586064, now seen corresponding path program 1 times [2024-06-28 02:52:34,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:34,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047039629] [2024-06-28 02:52:34,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:34,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:35,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:35,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:35,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047039629] [2024-06-28 02:52:35,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047039629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:35,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:35,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:52:35,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263561721] [2024-06-28 02:52:35,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:35,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:52:35,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:35,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:52:35,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:52:35,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-06-28 02:52:35,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 327 transitions, 3486 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:35,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:35,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-06-28 02:52:35,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:36,427 INFO L124 PetriNetUnfolderBase]: 4592/6871 cut-off events. [2024-06-28 02:52:36,427 INFO L125 PetriNetUnfolderBase]: For 1433436/1433439 co-relation queries the response was YES. [2024-06-28 02:52:36,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73099 conditions, 6871 events. 4592/6871 cut-off events. For 1433436/1433439 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 36566 event pairs, 1130 based on Foata normal form. 3/6871 useless extension candidates. Maximal degree in co-relation 72966. Up to 6784 conditions per place. [2024-06-28 02:52:36,522 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 319 selfloop transitions, 35 changer transitions 0/357 dead transitions. [2024-06-28 02:52:36,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 357 transitions, 4810 flow [2024-06-28 02:52:36,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:52:36,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:52:36,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 02:52:36,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152823920265781 [2024-06-28 02:52:36,523 INFO L175 Difference]: Start difference. First operand has 273 places, 327 transitions, 3486 flow. Second operand 7 states and 125 transitions. [2024-06-28 02:52:36,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 357 transitions, 4810 flow [2024-06-28 02:52:38,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 357 transitions, 4735 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 02:52:38,319 INFO L231 Difference]: Finished difference. Result has 276 places, 336 transitions, 3697 flow [2024-06-28 02:52:38,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3411, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3697, PETRI_PLACES=276, PETRI_TRANSITIONS=336} [2024-06-28 02:52:38,319 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 232 predicate places. [2024-06-28 02:52:38,319 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 336 transitions, 3697 flow [2024-06-28 02:52:38,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:38,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:38,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:38,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 02:52:38,319 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)] === [2024-06-28 02:52:38,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:38,320 INFO L85 PathProgramCache]: Analyzing trace with hash -64698992, now seen corresponding path program 2 times [2024-06-28 02:52:38,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:38,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498143504] [2024-06-28 02:52:38,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:38,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:39,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:39,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:39,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498143504] [2024-06-28 02:52:39,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498143504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:39,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:39,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:52:39,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769499570] [2024-06-28 02:52:39,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:39,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:52:39,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:39,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:52:39,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:52:39,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-06-28 02:52:39,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 336 transitions, 3697 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:39,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:39,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-06-28 02:52:39,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:40,423 INFO L124 PetriNetUnfolderBase]: 4605/6889 cut-off events. [2024-06-28 02:52:40,423 INFO L125 PetriNetUnfolderBase]: For 1468713/1468716 co-relation queries the response was YES. [2024-06-28 02:52:40,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74051 conditions, 6889 events. 4605/6889 cut-off events. For 1468713/1468716 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 36693 event pairs, 1130 based on Foata normal form. 3/6889 useless extension candidates. Maximal degree in co-relation 73916. Up to 6799 conditions per place. [2024-06-28 02:52:40,522 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 316 selfloop transitions, 41 changer transitions 0/360 dead transitions. [2024-06-28 02:52:40,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 360 transitions, 4967 flow [2024-06-28 02:52:40,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:52:40,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:52:40,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 02:52:40,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4053156146179402 [2024-06-28 02:52:40,523 INFO L175 Difference]: Start difference. First operand has 276 places, 336 transitions, 3697 flow. Second operand 7 states and 122 transitions. [2024-06-28 02:52:40,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 360 transitions, 4967 flow [2024-06-28 02:52:42,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 360 transitions, 4835 flow, removed 59 selfloop flow, removed 2 redundant places. [2024-06-28 02:52:42,488 INFO L231 Difference]: Finished difference. Result has 281 places, 342 transitions, 3801 flow [2024-06-28 02:52:42,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3593, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3801, PETRI_PLACES=281, PETRI_TRANSITIONS=342} [2024-06-28 02:52:42,488 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 237 predicate places. [2024-06-28 02:52:42,488 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 342 transitions, 3801 flow [2024-06-28 02:52:42,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:42,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:42,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:42,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 02:52:42,489 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:42,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:42,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1758016496, now seen corresponding path program 7 times [2024-06-28 02:52:42,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:42,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264858771] [2024-06-28 02:52:42,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:42,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:44,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:44,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:44,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264858771] [2024-06-28 02:52:44,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264858771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:44,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:44,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:44,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073393031] [2024-06-28 02:52:44,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:44,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:44,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:44,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:44,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:44,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:52:44,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 342 transitions, 3801 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:44,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:44,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:52:44,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:45,696 INFO L124 PetriNetUnfolderBase]: 4162/6450 cut-off events. [2024-06-28 02:52:45,696 INFO L125 PetriNetUnfolderBase]: For 1574145/1574164 co-relation queries the response was YES. [2024-06-28 02:52:45,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71948 conditions, 6450 events. 4162/6450 cut-off events. For 1574145/1574164 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 36897 event pairs, 872 based on Foata normal form. 24/6452 useless extension candidates. Maximal degree in co-relation 71811. Up to 5678 conditions per place. [2024-06-28 02:52:45,792 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 304 selfloop transitions, 60 changer transitions 0/393 dead transitions. [2024-06-28 02:52:45,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 393 transitions, 4819 flow [2024-06-28 02:52:45,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:45,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:45,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-28 02:52:45,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630021141649049 [2024-06-28 02:52:45,793 INFO L175 Difference]: Start difference. First operand has 281 places, 342 transitions, 3801 flow. Second operand 11 states and 219 transitions. [2024-06-28 02:52:45,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 393 transitions, 4819 flow [2024-06-28 02:52:47,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 393 transitions, 4718 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 02:52:47,291 INFO L231 Difference]: Finished difference. Result has 289 places, 343 transitions, 3916 flow [2024-06-28 02:52:47,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3700, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3916, PETRI_PLACES=289, PETRI_TRANSITIONS=343} [2024-06-28 02:52:47,291 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 245 predicate places. [2024-06-28 02:52:47,291 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 343 transitions, 3916 flow [2024-06-28 02:52:47,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:47,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:47,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:47,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 02:52:47,292 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:47,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:47,292 INFO L85 PathProgramCache]: Analyzing trace with hash -376364463, now seen corresponding path program 2 times [2024-06-28 02:52:47,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:47,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655311191] [2024-06-28 02:52:47,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:47,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:48,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:48,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:48,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655311191] [2024-06-28 02:52:48,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655311191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:48,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:48,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:48,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682928439] [2024-06-28 02:52:48,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:48,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:48,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:48,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:48,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:48,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:52:48,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 343 transitions, 3916 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:48,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:48,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:52:48,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:50,551 INFO L124 PetriNetUnfolderBase]: 4621/6995 cut-off events. [2024-06-28 02:52:50,551 INFO L125 PetriNetUnfolderBase]: For 1575556/1575575 co-relation queries the response was YES. [2024-06-28 02:52:50,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76706 conditions, 6995 events. 4621/6995 cut-off events. For 1575556/1575575 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 38305 event pairs, 1094 based on Foata normal form. 4/6992 useless extension candidates. Maximal degree in co-relation 76568. Up to 6623 conditions per place. [2024-06-28 02:52:50,634 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 323 selfloop transitions, 43 changer transitions 0/386 dead transitions. [2024-06-28 02:52:50,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 386 transitions, 4877 flow [2024-06-28 02:52:50,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:52:50,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:52:50,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 02:52:50,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43023255813953487 [2024-06-28 02:52:50,635 INFO L175 Difference]: Start difference. First operand has 289 places, 343 transitions, 3916 flow. Second operand 10 states and 185 transitions. [2024-06-28 02:52:50,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 386 transitions, 4877 flow [2024-06-28 02:52:52,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 386 transitions, 4715 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 02:52:52,386 INFO L231 Difference]: Finished difference. Result has 291 places, 348 transitions, 3990 flow [2024-06-28 02:52:52,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3760, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3990, PETRI_PLACES=291, PETRI_TRANSITIONS=348} [2024-06-28 02:52:52,387 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 247 predicate places. [2024-06-28 02:52:52,387 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 348 transitions, 3990 flow [2024-06-28 02:52:52,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:52,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:52,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:52,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 02:52:52,387 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:52,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:52,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1763594357, now seen corresponding path program 3 times [2024-06-28 02:52:52,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:52,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076018251] [2024-06-28 02:52:52,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:52,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:53,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:53,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:53,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076018251] [2024-06-28 02:52:53,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076018251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:53,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:53,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:53,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617399898] [2024-06-28 02:52:53,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:53,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:53,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:53,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:53,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:53,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:52:53,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 348 transitions, 3990 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:53,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:53,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:52:53,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:55,508 INFO L124 PetriNetUnfolderBase]: 4638/7022 cut-off events. [2024-06-28 02:52:55,508 INFO L125 PetriNetUnfolderBase]: For 1595933/1595952 co-relation queries the response was YES. [2024-06-28 02:52:55,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76865 conditions, 7022 events. 4638/7022 cut-off events. For 1595933/1595952 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 38497 event pairs, 1059 based on Foata normal form. 4/7019 useless extension candidates. Maximal degree in co-relation 76725. Up to 6587 conditions per place. [2024-06-28 02:52:55,611 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 320 selfloop transitions, 53 changer transitions 0/393 dead transitions. [2024-06-28 02:52:55,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 393 transitions, 4982 flow [2024-06-28 02:52:55,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:52:55,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:52:55,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-28 02:52:55,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-28 02:52:55,612 INFO L175 Difference]: Start difference. First operand has 291 places, 348 transitions, 3990 flow. Second operand 10 states and 190 transitions. [2024-06-28 02:52:55,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 393 transitions, 4982 flow [2024-06-28 02:52:57,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 393 transitions, 4809 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-28 02:52:57,801 INFO L231 Difference]: Finished difference. Result has 295 places, 353 transitions, 4070 flow [2024-06-28 02:52:57,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3817, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4070, PETRI_PLACES=295, PETRI_TRANSITIONS=353} [2024-06-28 02:52:57,801 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 251 predicate places. [2024-06-28 02:52:57,801 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 353 transitions, 4070 flow [2024-06-28 02:52:57,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:57,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:57,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:57,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 02:52:57,801 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:57,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:57,802 INFO L85 PathProgramCache]: Analyzing trace with hash -102146074, now seen corresponding path program 8 times [2024-06-28 02:52:57,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:57,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517900970] [2024-06-28 02:52:57,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:57,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:59,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:59,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:59,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517900970] [2024-06-28 02:52:59,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517900970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:59,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:59,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:59,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216347472] [2024-06-28 02:52:59,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:59,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:59,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:59,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:59,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:59,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:52:59,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 353 transitions, 4070 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:59,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:59,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:52:59,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:01,086 INFO L124 PetriNetUnfolderBase]: 4462/6954 cut-off events. [2024-06-28 02:53:01,086 INFO L125 PetriNetUnfolderBase]: For 1765957/1765976 co-relation queries the response was YES. [2024-06-28 02:53:01,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80132 conditions, 6954 events. 4462/6954 cut-off events. For 1765957/1765976 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 40742 event pairs, 917 based on Foata normal form. 16/6948 useless extension candidates. Maximal degree in co-relation 79990. Up to 5736 conditions per place. [2024-06-28 02:53:01,193 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 301 selfloop transitions, 79 changer transitions 0/410 dead transitions. [2024-06-28 02:53:01,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 410 transitions, 5628 flow [2024-06-28 02:53:01,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:01,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:01,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-06-28 02:53:01,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4714587737843552 [2024-06-28 02:53:01,194 INFO L175 Difference]: Start difference. First operand has 295 places, 353 transitions, 4070 flow. Second operand 11 states and 223 transitions. [2024-06-28 02:53:01,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 410 transitions, 5628 flow [2024-06-28 02:53:03,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 410 transitions, 5419 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-28 02:53:03,518 INFO L231 Difference]: Finished difference. Result has 300 places, 356 transitions, 4274 flow [2024-06-28 02:53:03,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3861, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4274, PETRI_PLACES=300, PETRI_TRANSITIONS=356} [2024-06-28 02:53:03,519 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 256 predicate places. [2024-06-28 02:53:03,519 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 356 transitions, 4274 flow [2024-06-28 02:53:03,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:03,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:03,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:03,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 02:53:03,519 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:53:03,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:03,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1763378876, now seen corresponding path program 9 times [2024-06-28 02:53:03,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:03,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492430526] [2024-06-28 02:53:03,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:03,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:05,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:05,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:05,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492430526] [2024-06-28 02:53:05,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492430526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:05,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:05,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:53:05,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310950501] [2024-06-28 02:53:05,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:05,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:53:05,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:05,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:53:05,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:53:05,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:53:05,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 356 transitions, 4274 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:05,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:05,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:53:05,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:07,007 INFO L124 PetriNetUnfolderBase]: 4583/7150 cut-off events. [2024-06-28 02:53:07,007 INFO L125 PetriNetUnfolderBase]: For 1907824/1907843 co-relation queries the response was YES. [2024-06-28 02:53:07,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83102 conditions, 7150 events. 4583/7150 cut-off events. For 1907824/1907843 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 42426 event pairs, 1001 based on Foata normal form. 36/7159 useless extension candidates. Maximal degree in co-relation 82958. Up to 6280 conditions per place. [2024-06-28 02:53:07,111 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 314 selfloop transitions, 64 changer transitions 0/408 dead transitions. [2024-06-28 02:53:07,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 408 transitions, 5423 flow [2024-06-28 02:53:07,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:07,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:07,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-28 02:53:07,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-28 02:53:07,113 INFO L175 Difference]: Start difference. First operand has 300 places, 356 transitions, 4274 flow. Second operand 11 states and 220 transitions. [2024-06-28 02:53:07,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 408 transitions, 5423 flow [2024-06-28 02:53:10,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 408 transitions, 5245 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-28 02:53:10,008 INFO L231 Difference]: Finished difference. Result has 304 places, 358 transitions, 4426 flow [2024-06-28 02:53:10,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4108, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4426, PETRI_PLACES=304, PETRI_TRANSITIONS=358} [2024-06-28 02:53:10,009 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 260 predicate places. [2024-06-28 02:53:10,009 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 358 transitions, 4426 flow [2024-06-28 02:53:10,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:10,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:10,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:10,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 02:53:10,009 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:53:10,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:10,010 INFO L85 PathProgramCache]: Analyzing trace with hash -376355163, now seen corresponding path program 4 times [2024-06-28 02:53:10,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:10,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4386214] [2024-06-28 02:53:10,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:10,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:11,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:11,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:11,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4386214] [2024-06-28 02:53:11,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4386214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:11,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:11,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:53:11,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360280077] [2024-06-28 02:53:11,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:11,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:53:11,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:11,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:53:11,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:53:11,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:53:11,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 358 transitions, 4426 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:11,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:11,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:53:11,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:13,170 INFO L124 PetriNetUnfolderBase]: 5061/7719 cut-off events. [2024-06-28 02:53:13,171 INFO L125 PetriNetUnfolderBase]: For 1851947/1851966 co-relation queries the response was YES. [2024-06-28 02:53:13,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87856 conditions, 7719 events. 5061/7719 cut-off events. For 1851947/1851966 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 43804 event pairs, 1195 based on Foata normal form. 4/7711 useless extension candidates. Maximal degree in co-relation 87710. Up to 7349 conditions per place. [2024-06-28 02:53:13,285 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 336 selfloop transitions, 42 changer transitions 0/398 dead transitions. [2024-06-28 02:53:13,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 398 transitions, 5390 flow [2024-06-28 02:53:13,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:53:13,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:53:13,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 02:53:13,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42790697674418604 [2024-06-28 02:53:13,288 INFO L175 Difference]: Start difference. First operand has 304 places, 358 transitions, 4426 flow. Second operand 10 states and 184 transitions. [2024-06-28 02:53:13,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 398 transitions, 5390 flow [2024-06-28 02:53:16,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 398 transitions, 5185 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-28 02:53:16,287 INFO L231 Difference]: Finished difference. Result has 305 places, 360 transitions, 4426 flow [2024-06-28 02:53:16,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4221, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4426, PETRI_PLACES=305, PETRI_TRANSITIONS=360} [2024-06-28 02:53:16,288 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 261 predicate places. [2024-06-28 02:53:16,288 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 360 transitions, 4426 flow [2024-06-28 02:53:16,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:16,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:16,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:16,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 02:53:16,289 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:53:16,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:16,289 INFO L85 PathProgramCache]: Analyzing trace with hash -583435194, now seen corresponding path program 10 times [2024-06-28 02:53:16,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:16,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549925014] [2024-06-28 02:53:16,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:16,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:17,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:17,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:17,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549925014] [2024-06-28 02:53:17,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549925014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:17,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:17,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:53:17,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84057966] [2024-06-28 02:53:17,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:17,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:53:17,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:17,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:53:17,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:53:18,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:53:18,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 360 transitions, 4426 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:18,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:18,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:53:18,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:19,938 INFO L124 PetriNetUnfolderBase]: 4722/7374 cut-off events. [2024-06-28 02:53:19,938 INFO L125 PetriNetUnfolderBase]: For 1903813/1903832 co-relation queries the response was YES. [2024-06-28 02:53:20,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84791 conditions, 7374 events. 4722/7374 cut-off events. For 1903813/1903832 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 44048 event pairs, 1010 based on Foata normal form. 20/7372 useless extension candidates. Maximal degree in co-relation 84644. Up to 6491 conditions per place. [2024-06-28 02:53:20,045 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 304 selfloop transitions, 76 changer transitions 0/410 dead transitions. [2024-06-28 02:53:20,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 410 transitions, 5459 flow [2024-06-28 02:53:20,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:20,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:20,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-28 02:53:20,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630021141649049 [2024-06-28 02:53:20,046 INFO L175 Difference]: Start difference. First operand has 305 places, 360 transitions, 4426 flow. Second operand 11 states and 219 transitions. [2024-06-28 02:53:20,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 410 transitions, 5459 flow [2024-06-28 02:53:23,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 410 transitions, 5272 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-06-28 02:53:23,256 INFO L231 Difference]: Finished difference. Result has 308 places, 361 transitions, 4485 flow [2024-06-28 02:53:23,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4239, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4485, PETRI_PLACES=308, PETRI_TRANSITIONS=361} [2024-06-28 02:53:23,257 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 264 predicate places. [2024-06-28 02:53:23,257 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 361 transitions, 4485 flow [2024-06-28 02:53:23,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:23,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:23,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:23,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 02:53:23,258 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:53:23,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:23,258 INFO L85 PathProgramCache]: Analyzing trace with hash -383773773, now seen corresponding path program 5 times [2024-06-28 02:53:23,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:23,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580977186] [2024-06-28 02:53:23,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:23,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:24,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:24,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:24,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580977186] [2024-06-28 02:53:24,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580977186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:24,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:24,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:53:24,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351736529] [2024-06-28 02:53:24,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:24,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:53:24,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:24,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:53:24,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:53:24,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:53:24,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 361 transitions, 4485 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:24,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:24,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:53:24,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:26,388 INFO L124 PetriNetUnfolderBase]: 5166/7894 cut-off events. [2024-06-28 02:53:26,388 INFO L125 PetriNetUnfolderBase]: For 1916875/1916894 co-relation queries the response was YES. [2024-06-28 02:53:26,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89807 conditions, 7894 events. 5166/7894 cut-off events. For 1916875/1916894 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 45175 event pairs, 1203 based on Foata normal form. 4/7891 useless extension candidates. Maximal degree in co-relation 89659. Up to 7495 conditions per place. [2024-06-28 02:53:26,512 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 337 selfloop transitions, 48 changer transitions 0/405 dead transitions. [2024-06-28 02:53:26,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 405 transitions, 5512 flow [2024-06-28 02:53:26,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:53:26,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:53:26,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-28 02:53:26,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4372093023255814 [2024-06-28 02:53:26,513 INFO L175 Difference]: Start difference. First operand has 308 places, 361 transitions, 4485 flow. Second operand 10 states and 188 transitions. [2024-06-28 02:53:26,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 405 transitions, 5512 flow [2024-06-28 02:53:29,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 405 transitions, 5319 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 02:53:29,810 INFO L231 Difference]: Finished difference. Result has 310 places, 366 transitions, 4562 flow [2024-06-28 02:53:29,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4296, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4562, PETRI_PLACES=310, PETRI_TRANSITIONS=366} [2024-06-28 02:53:29,811 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 266 predicate places. [2024-06-28 02:53:29,811 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 366 transitions, 4562 flow [2024-06-28 02:53:29,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:29,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:29,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:29,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 02:53:29,811 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:53:29,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:29,812 INFO L85 PathProgramCache]: Analyzing trace with hash -383989254, now seen corresponding path program 11 times [2024-06-28 02:53:29,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:29,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339820154] [2024-06-28 02:53:29,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:29,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:31,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:31,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:31,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339820154] [2024-06-28 02:53:31,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339820154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:31,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:31,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:53:31,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955597204] [2024-06-28 02:53:31,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:31,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:53:31,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:31,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:53:31,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:53:31,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:53:31,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 366 transitions, 4562 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:31,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:31,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:53:31,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:33,357 INFO L124 PetriNetUnfolderBase]: 4687/7325 cut-off events. [2024-06-28 02:53:33,357 INFO L125 PetriNetUnfolderBase]: For 1889057/1889076 co-relation queries the response was YES. [2024-06-28 02:53:33,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82766 conditions, 7325 events. 4687/7325 cut-off events. For 1889057/1889076 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 43688 event pairs, 1016 based on Foata normal form. 24/7322 useless extension candidates. Maximal degree in co-relation 82616. Up to 6592 conditions per place. [2024-06-28 02:53:33,463 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 331 selfloop transitions, 52 changer transitions 0/414 dead transitions. [2024-06-28 02:53:33,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 414 transitions, 5512 flow [2024-06-28 02:53:33,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:33,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:33,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-28 02:53:33,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452431289640592 [2024-06-28 02:53:33,464 INFO L175 Difference]: Start difference. First operand has 310 places, 366 transitions, 4562 flow. Second operand 11 states and 214 transitions. [2024-06-28 02:53:33,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 414 transitions, 5512 flow [2024-06-28 02:53:36,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 414 transitions, 5255 flow, removed 83 selfloop flow, removed 7 redundant places. [2024-06-28 02:53:36,744 INFO L231 Difference]: Finished difference. Result has 314 places, 366 transitions, 4416 flow [2024-06-28 02:53:36,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4305, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4416, PETRI_PLACES=314, PETRI_TRANSITIONS=366} [2024-06-28 02:53:36,745 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 270 predicate places. [2024-06-28 02:53:36,745 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 366 transitions, 4416 flow [2024-06-28 02:53:36,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:36,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:36,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:36,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 02:53:36,745 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)] === [2024-06-28 02:53:36,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:36,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1931911361, now seen corresponding path program 2 times [2024-06-28 02:53:36,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:36,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692736645] [2024-06-28 02:53:36,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:36,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:37,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:37,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:37,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692736645] [2024-06-28 02:53:37,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692736645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:37,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:37,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:53:37,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448968768] [2024-06-28 02:53:37,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:37,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:53:37,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:37,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:53:37,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:53:37,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:53:37,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 366 transitions, 4416 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) [2024-06-28 02:53:37,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:37,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:53:37,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:39,458 INFO L124 PetriNetUnfolderBase]: 4818/7499 cut-off events. [2024-06-28 02:53:39,458 INFO L125 PetriNetUnfolderBase]: For 1875094/1875111 co-relation queries the response was YES. [2024-06-28 02:53:39,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84696 conditions, 7499 events. 4818/7499 cut-off events. For 1875094/1875111 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 44206 event pairs, 1227 based on Foata normal form. 8/7457 useless extension candidates. Maximal degree in co-relation 84545. Up to 7020 conditions per place. [2024-06-28 02:53:39,577 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 305 selfloop transitions, 30 changer transitions 0/392 dead transitions. [2024-06-28 02:53:39,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 392 transitions, 5198 flow [2024-06-28 02:53:39,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:53:39,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:53:39,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 02:53:39,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.438953488372093 [2024-06-28 02:53:39,579 INFO L175 Difference]: Start difference. First operand has 314 places, 366 transitions, 4416 flow. Second operand 8 states and 151 transitions. [2024-06-28 02:53:39,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 392 transitions, 5198 flow [2024-06-28 02:53:42,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 392 transitions, 5089 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 02:53:42,989 INFO L231 Difference]: Finished difference. Result has 313 places, 370 transitions, 4430 flow [2024-06-28 02:53:42,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4307, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4430, PETRI_PLACES=313, PETRI_TRANSITIONS=370} [2024-06-28 02:53:42,989 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 269 predicate places. [2024-06-28 02:53:42,989 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 370 transitions, 4430 flow [2024-06-28 02:53:42,989 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) [2024-06-28 02:53:42,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:42,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:42,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 02:53:42,990 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)] === [2024-06-28 02:53:42,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:42,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1931924381, now seen corresponding path program 3 times [2024-06-28 02:53:42,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:42,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192563586] [2024-06-28 02:53:42,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:42,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:43,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:43,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:43,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192563586] [2024-06-28 02:53:43,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192563586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:43,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:43,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:53:43,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468953456] [2024-06-28 02:53:43,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:43,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:53:43,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:43,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:53:43,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:53:44,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:53:44,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 370 transitions, 4430 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) [2024-06-28 02:53:44,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:44,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:53:44,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:45,599 INFO L124 PetriNetUnfolderBase]: 4856/7556 cut-off events. [2024-06-28 02:53:45,599 INFO L125 PetriNetUnfolderBase]: For 1911377/1911394 co-relation queries the response was YES. [2024-06-28 02:53:45,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85799 conditions, 7556 events. 4856/7556 cut-off events. For 1911377/1911394 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 44579 event pairs, 1212 based on Foata normal form. 4/7511 useless extension candidates. Maximal degree in co-relation 85647. Up to 7039 conditions per place. [2024-06-28 02:53:45,719 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 307 selfloop transitions, 40 changer transitions 0/404 dead transitions. [2024-06-28 02:53:45,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 404 transitions, 5581 flow [2024-06-28 02:53:45,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:53:45,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:53:45,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 02:53:45,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2024-06-28 02:53:45,720 INFO L175 Difference]: Start difference. First operand has 313 places, 370 transitions, 4430 flow. Second operand 8 states and 156 transitions. [2024-06-28 02:53:45,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 404 transitions, 5581 flow [2024-06-28 02:53:48,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 404 transitions, 5498 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 02:53:48,697 INFO L231 Difference]: Finished difference. Result has 316 places, 380 transitions, 4632 flow [2024-06-28 02:53:48,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4347, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4632, PETRI_PLACES=316, PETRI_TRANSITIONS=380} [2024-06-28 02:53:48,698 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 272 predicate places. [2024-06-28 02:53:48,698 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 380 transitions, 4632 flow [2024-06-28 02:53:48,698 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) [2024-06-28 02:53:48,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:48,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:48,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 02:53:48,698 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)] === [2024-06-28 02:53:48,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:48,699 INFO L85 PathProgramCache]: Analyzing trace with hash 2039924112, now seen corresponding path program 3 times [2024-06-28 02:53:48,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:48,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255759044] [2024-06-28 02:53:48,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:48,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:49,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:49,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:49,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255759044] [2024-06-28 02:53:49,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255759044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:49,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:49,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:53:49,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675379591] [2024-06-28 02:53:49,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:49,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:53:49,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:49,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:53:49,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:53:49,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-06-28 02:53:49,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 380 transitions, 4632 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:49,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:49,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-06-28 02:53:49,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:51,467 INFO L124 PetriNetUnfolderBase]: 5330/8063 cut-off events. [2024-06-28 02:53:51,467 INFO L125 PetriNetUnfolderBase]: For 1920996/1920996 co-relation queries the response was YES. [2024-06-28 02:53:51,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90127 conditions, 8063 events. 5330/8063 cut-off events. For 1920996/1920996 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 45430 event pairs, 1279 based on Foata normal form. 1/8062 useless extension candidates. Maximal degree in co-relation 89973. Up to 8015 conditions per place. [2024-06-28 02:53:51,594 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 370 selfloop transitions, 24 changer transitions 0/397 dead transitions. [2024-06-28 02:53:51,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 397 transitions, 5668 flow [2024-06-28 02:53:51,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:53:51,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:53:51,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 02:53:51,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3953488372093023 [2024-06-28 02:53:51,595 INFO L175 Difference]: Start difference. First operand has 316 places, 380 transitions, 4632 flow. Second operand 7 states and 119 transitions. [2024-06-28 02:53:51,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 397 transitions, 5668 flow [2024-06-28 02:53:54,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 397 transitions, 5520 flow, removed 59 selfloop flow, removed 4 redundant places. [2024-06-28 02:53:54,417 INFO L231 Difference]: Finished difference. Result has 319 places, 380 transitions, 4538 flow [2024-06-28 02:53:54,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4484, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4538, PETRI_PLACES=319, PETRI_TRANSITIONS=380} [2024-06-28 02:53:54,418 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 275 predicate places. [2024-06-28 02:53:54,418 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 380 transitions, 4538 flow [2024-06-28 02:53:54,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:54,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:54,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:54,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 02:53:54,418 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)] === [2024-06-28 02:53:54,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:54,418 INFO L85 PathProgramCache]: Analyzing trace with hash 2053256592, now seen corresponding path program 4 times [2024-06-28 02:53:54,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:54,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388624565] [2024-06-28 02:53:54,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:54,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:55,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:55,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:55,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388624565] [2024-06-28 02:53:55,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388624565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:55,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:55,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:53:55,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454163370] [2024-06-28 02:53:55,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:55,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:53:55,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:55,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:53:55,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:53:55,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-06-28 02:53:55,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 380 transitions, 4538 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:55,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:55,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-06-28 02:53:55,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:56,970 INFO L124 PetriNetUnfolderBase]: 5335/8070 cut-off events. [2024-06-28 02:53:56,971 INFO L125 PetriNetUnfolderBase]: For 1951761/1951761 co-relation queries the response was YES. [2024-06-28 02:53:57,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90353 conditions, 8070 events. 5335/8070 cut-off events. For 1951761/1951761 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 45458 event pairs, 1279 based on Foata normal form. 1/8069 useless extension candidates. Maximal degree in co-relation 90197. Up to 8037 conditions per place. [2024-06-28 02:53:57,094 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 374 selfloop transitions, 19 changer transitions 0/396 dead transitions. [2024-06-28 02:53:57,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 396 transitions, 5431 flow [2024-06-28 02:53:57,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:53:57,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:53:57,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-28 02:53:57,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787375415282392 [2024-06-28 02:53:57,095 INFO L175 Difference]: Start difference. First operand has 319 places, 380 transitions, 4538 flow. Second operand 7 states and 114 transitions. [2024-06-28 02:53:57,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 396 transitions, 5431 flow [2024-06-28 02:54:00,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 396 transitions, 5325 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 02:54:00,396 INFO L231 Difference]: Finished difference. Result has 320 places, 383 transitions, 4557 flow [2024-06-28 02:54:00,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4450, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4557, PETRI_PLACES=320, PETRI_TRANSITIONS=383} [2024-06-28 02:54:00,397 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 276 predicate places. [2024-06-28 02:54:00,397 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 383 transitions, 4557 flow [2024-06-28 02:54:00,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:00,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:00,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:00,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 02:54:00,397 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)] === [2024-06-28 02:54:00,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:00,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1404771378, now seen corresponding path program 5 times [2024-06-28 02:54:00,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:00,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240270396] [2024-06-28 02:54:00,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:00,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:01,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:01,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:01,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240270396] [2024-06-28 02:54:01,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240270396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:01,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:01,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:54:01,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777585613] [2024-06-28 02:54:01,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:01,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:54:01,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:01,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:54:01,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:54:01,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-06-28 02:54:01,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 383 transitions, 4557 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:01,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:01,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-06-28 02:54:01,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:02,910 INFO L124 PetriNetUnfolderBase]: 5332/8067 cut-off events. [2024-06-28 02:54:02,910 INFO L125 PetriNetUnfolderBase]: For 1978734/1978737 co-relation queries the response was YES. [2024-06-28 02:54:02,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90467 conditions, 8067 events. 5332/8067 cut-off events. For 1978734/1978737 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 45468 event pairs, 1282 based on Foata normal form. 3/8067 useless extension candidates. Maximal degree in co-relation 90310. Up to 8033 conditions per place. [2024-06-28 02:54:03,024 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 371 selfloop transitions, 19 changer transitions 0/393 dead transitions. [2024-06-28 02:54:03,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 393 transitions, 5361 flow [2024-06-28 02:54:03,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:54:03,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:54:03,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 111 transitions. [2024-06-28 02:54:03,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3687707641196013 [2024-06-28 02:54:03,025 INFO L175 Difference]: Start difference. First operand has 320 places, 383 transitions, 4557 flow. Second operand 7 states and 111 transitions. [2024-06-28 02:54:03,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 393 transitions, 5361 flow [2024-06-28 02:54:06,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 393 transitions, 5253 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 02:54:06,882 INFO L231 Difference]: Finished difference. Result has 322 places, 383 transitions, 4493 flow [2024-06-28 02:54:06,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4449, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4493, PETRI_PLACES=322, PETRI_TRANSITIONS=383} [2024-06-28 02:54:06,883 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 278 predicate places. [2024-06-28 02:54:06,883 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 383 transitions, 4493 flow [2024-06-28 02:54:06,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:06,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:06,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:06,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 02:54:06,883 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)] === [2024-06-28 02:54:06,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:06,883 INFO L85 PathProgramCache]: Analyzing trace with hash -2032041168, now seen corresponding path program 6 times [2024-06-28 02:54:06,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:06,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772009613] [2024-06-28 02:54:06,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:06,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:07,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:07,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:07,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772009613] [2024-06-28 02:54:07,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772009613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:07,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:07,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:54:07,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793265074] [2024-06-28 02:54:07,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:07,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:54:07,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:07,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:54:07,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:54:07,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-06-28 02:54:07,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 383 transitions, 4493 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:07,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:07,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-06-28 02:54:07,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:09,409 INFO L124 PetriNetUnfolderBase]: 5329/8063 cut-off events. [2024-06-28 02:54:09,409 INFO L125 PetriNetUnfolderBase]: For 2006295/2006298 co-relation queries the response was YES. [2024-06-28 02:54:09,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90574 conditions, 8063 events. 5329/8063 cut-off events. For 2006295/2006298 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 45463 event pairs, 1296 based on Foata normal form. 3/8063 useless extension candidates. Maximal degree in co-relation 90416. Up to 8020 conditions per place. [2024-06-28 02:54:09,531 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 363 selfloop transitions, 27 changer transitions 0/393 dead transitions. [2024-06-28 02:54:09,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 393 transitions, 5297 flow [2024-06-28 02:54:09,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:54:09,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:54:09,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-28 02:54:09,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37209302325581395 [2024-06-28 02:54:09,532 INFO L175 Difference]: Start difference. First operand has 322 places, 383 transitions, 4493 flow. Second operand 7 states and 112 transitions. [2024-06-28 02:54:09,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 393 transitions, 5297 flow [2024-06-28 02:54:13,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 393 transitions, 5203 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 02:54:13,564 INFO L231 Difference]: Finished difference. Result has 323 places, 383 transitions, 4459 flow [2024-06-28 02:54:13,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4399, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4459, PETRI_PLACES=323, PETRI_TRANSITIONS=383} [2024-06-28 02:54:13,564 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 279 predicate places. [2024-06-28 02:54:13,564 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 383 transitions, 4459 flow [2024-06-28 02:54:13,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:13,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:13,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:13,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 02:54:13,565 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:54:13,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:13,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1114866643, now seen corresponding path program 6 times [2024-06-28 02:54:13,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:13,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840588862] [2024-06-28 02:54:13,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:13,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:14,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:14,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:14,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840588862] [2024-06-28 02:54:14,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840588862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:14,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:14,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:54:14,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257147025] [2024-06-28 02:54:14,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:14,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:54:14,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:14,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:54:14,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:54:15,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:54:15,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 383 transitions, 4459 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:15,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:15,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:54:15,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:16,824 INFO L124 PetriNetUnfolderBase]: 5212/7953 cut-off events. [2024-06-28 02:54:16,824 INFO L125 PetriNetUnfolderBase]: For 2067788/2067808 co-relation queries the response was YES. [2024-06-28 02:54:16,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90428 conditions, 7953 events. 5212/7953 cut-off events. For 2067788/2067808 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 45521 event pairs, 1196 based on Foata normal form. 4/7947 useless extension candidates. Maximal degree in co-relation 90269. Up to 7521 conditions per place. [2024-06-28 02:54:16,951 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 355 selfloop transitions, 47 changer transitions 0/424 dead transitions. [2024-06-28 02:54:16,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 424 transitions, 5522 flow [2024-06-28 02:54:16,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:54:16,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:54:16,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-28 02:54:16,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4232558139534884 [2024-06-28 02:54:16,953 INFO L175 Difference]: Start difference. First operand has 323 places, 383 transitions, 4459 flow. Second operand 10 states and 182 transitions. [2024-06-28 02:54:16,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 424 transitions, 5522 flow [2024-06-28 02:54:20,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 424 transitions, 5426 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 02:54:20,418 INFO L231 Difference]: Finished difference. Result has 327 places, 388 transitions, 4625 flow [2024-06-28 02:54:20,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4363, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4625, PETRI_PLACES=327, PETRI_TRANSITIONS=388} [2024-06-28 02:54:20,418 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 283 predicate places. [2024-06-28 02:54:20,418 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 388 transitions, 4625 flow [2024-06-28 02:54:20,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:20,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:20,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:20,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 02:54:20,419 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:54:20,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:20,419 INFO L85 PathProgramCache]: Analyzing trace with hash -835206949, now seen corresponding path program 7 times [2024-06-28 02:54:20,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:20,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032976858] [2024-06-28 02:54:20,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:20,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:21,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:21,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:21,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032976858] [2024-06-28 02:54:21,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032976858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:21,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:21,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:54:21,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675586502] [2024-06-28 02:54:21,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:21,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:54:21,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:21,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:54:21,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:54:21,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:54:21,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 388 transitions, 4625 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:21,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:21,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:54:21,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:23,677 INFO L124 PetriNetUnfolderBase]: 5251/8012 cut-off events. [2024-06-28 02:54:23,677 INFO L125 PetriNetUnfolderBase]: For 2114358/2114378 co-relation queries the response was YES. [2024-06-28 02:54:23,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92051 conditions, 8012 events. 5251/8012 cut-off events. For 2114358/2114378 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 45971 event pairs, 1230 based on Foata normal form. 4/8006 useless extension candidates. Maximal degree in co-relation 91890. Up to 7690 conditions per place. [2024-06-28 02:54:23,804 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 372 selfloop transitions, 34 changer transitions 0/428 dead transitions. [2024-06-28 02:54:23,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 428 transitions, 5685 flow [2024-06-28 02:54:23,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:54:23,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:54:23,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-28 02:54:23,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186046511627907 [2024-06-28 02:54:23,805 INFO L175 Difference]: Start difference. First operand has 327 places, 388 transitions, 4625 flow. Second operand 10 states and 180 transitions. [2024-06-28 02:54:23,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 428 transitions, 5685 flow [2024-06-28 02:54:27,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 428 transitions, 5462 flow, removed 64 selfloop flow, removed 7 redundant places. [2024-06-28 02:54:27,330 INFO L231 Difference]: Finished difference. Result has 331 places, 393 transitions, 4647 flow [2024-06-28 02:54:27,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4408, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4647, PETRI_PLACES=331, PETRI_TRANSITIONS=393} [2024-06-28 02:54:27,330 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 287 predicate places. [2024-06-28 02:54:27,330 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 393 transitions, 4647 flow [2024-06-28 02:54:27,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:27,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:27,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:27,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 02:54:27,331 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:54:27,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:27,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1481653201, now seen corresponding path program 8 times [2024-06-28 02:54:27,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:27,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892684123] [2024-06-28 02:54:27,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:27,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:28,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:28,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:28,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892684123] [2024-06-28 02:54:28,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892684123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:28,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:28,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:54:28,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106367333] [2024-06-28 02:54:28,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:28,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:54:28,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:28,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:54:28,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:54:29,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:54:29,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 393 transitions, 4647 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:29,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:29,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:54:29,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:30,996 INFO L124 PetriNetUnfolderBase]: 5268/8039 cut-off events. [2024-06-28 02:54:30,996 INFO L125 PetriNetUnfolderBase]: For 2153305/2153325 co-relation queries the response was YES. [2024-06-28 02:54:31,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92604 conditions, 8039 events. 5268/8039 cut-off events. For 2153305/2153325 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 46135 event pairs, 1225 based on Foata normal form. 4/8033 useless extension candidates. Maximal degree in co-relation 92441. Up to 7690 conditions per place. [2024-06-28 02:54:31,114 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 373 selfloop transitions, 39 changer transitions 0/434 dead transitions. [2024-06-28 02:54:31,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 434 transitions, 5733 flow [2024-06-28 02:54:31,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:54:31,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:54:31,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-28 02:54:31,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255813953488372 [2024-06-28 02:54:31,115 INFO L175 Difference]: Start difference. First operand has 331 places, 393 transitions, 4647 flow. Second operand 10 states and 183 transitions. [2024-06-28 02:54:31,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 434 transitions, 5733 flow [2024-06-28 02:54:34,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 434 transitions, 5554 flow, removed 59 selfloop flow, removed 7 redundant places. [2024-06-28 02:54:34,857 INFO L231 Difference]: Finished difference. Result has 335 places, 398 transitions, 4733 flow [2024-06-28 02:54:34,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4468, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4733, PETRI_PLACES=335, PETRI_TRANSITIONS=398} [2024-06-28 02:54:34,857 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 291 predicate places. [2024-06-28 02:54:34,857 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 398 transitions, 4733 flow [2024-06-28 02:54:34,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:34,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:34,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:34,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 02:54:34,858 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:54:34,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:34,858 INFO L85 PathProgramCache]: Analyzing trace with hash -842831740, now seen corresponding path program 12 times [2024-06-28 02:54:34,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:34,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854864550] [2024-06-28 02:54:34,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:34,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:36,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:36,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:36,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854864550] [2024-06-28 02:54:36,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854864550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:36,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:36,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:54:36,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002399680] [2024-06-28 02:54:36,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:36,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:54:36,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:36,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:54:36,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:54:36,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:54:36,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 398 transitions, 4733 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:36,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:36,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:54:36,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:38,398 INFO L124 PetriNetUnfolderBase]: 4919/7690 cut-off events. [2024-06-28 02:54:38,398 INFO L125 PetriNetUnfolderBase]: For 2292849/2292869 co-relation queries the response was YES. [2024-06-28 02:54:38,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90533 conditions, 7690 events. 4919/7690 cut-off events. For 2292849/2292869 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 46294 event pairs, 1076 based on Foata normal form. 28/7696 useless extension candidates. Maximal degree in co-relation 90368. Up to 6959 conditions per place. [2024-06-28 02:54:38,525 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 363 selfloop transitions, 42 changer transitions 0/440 dead transitions. [2024-06-28 02:54:38,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 440 transitions, 5829 flow [2024-06-28 02:54:38,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:54:38,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:54:38,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-28 02:54:38,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44883720930232557 [2024-06-28 02:54:38,526 INFO L175 Difference]: Start difference. First operand has 335 places, 398 transitions, 4733 flow. Second operand 10 states and 193 transitions. [2024-06-28 02:54:38,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 440 transitions, 5829 flow [2024-06-28 02:54:43,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 440 transitions, 5612 flow, removed 72 selfloop flow, removed 7 redundant places. [2024-06-28 02:54:43,178 INFO L231 Difference]: Finished difference. Result has 338 places, 399 transitions, 4716 flow [2024-06-28 02:54:43,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4516, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4716, PETRI_PLACES=338, PETRI_TRANSITIONS=399} [2024-06-28 02:54:43,178 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 294 predicate places. [2024-06-28 02:54:43,178 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 399 transitions, 4716 flow [2024-06-28 02:54:43,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:43,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:43,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:43,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 02:54:43,178 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:54:43,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:43,179 INFO L85 PathProgramCache]: Analyzing trace with hash -410250439, now seen corresponding path program 9 times [2024-06-28 02:54:43,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:43,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979071032] [2024-06-28 02:54:43,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:43,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:44,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:44,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:44,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979071032] [2024-06-28 02:54:44,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979071032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:44,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:44,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:54:44,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501563022] [2024-06-28 02:54:44,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:44,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:54:44,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:44,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:54:44,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:54:44,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:54:44,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 399 transitions, 4716 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:44,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:44,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:54:44,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:46,403 INFO L124 PetriNetUnfolderBase]: 5394/8245 cut-off events. [2024-06-28 02:54:46,403 INFO L125 PetriNetUnfolderBase]: For 2267790/2267810 co-relation queries the response was YES. [2024-06-28 02:54:46,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96105 conditions, 8245 events. 5394/8245 cut-off events. For 2267790/2267810 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 47754 event pairs, 1231 based on Foata normal form. 4/8239 useless extension candidates. Maximal degree in co-relation 95939. Up to 7923 conditions per place. [2024-06-28 02:54:46,539 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 381 selfloop transitions, 33 changer transitions 0/436 dead transitions. [2024-06-28 02:54:46,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 436 transitions, 5766 flow [2024-06-28 02:54:46,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:54:46,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:54:46,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-28 02:54:46,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41627906976744183 [2024-06-28 02:54:46,540 INFO L175 Difference]: Start difference. First operand has 338 places, 399 transitions, 4716 flow. Second operand 10 states and 179 transitions. [2024-06-28 02:54:46,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 436 transitions, 5766 flow [2024-06-28 02:54:49,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 436 transitions, 5626 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-28 02:54:49,850 INFO L231 Difference]: Finished difference. Result has 340 places, 401 transitions, 4785 flow [2024-06-28 02:54:49,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4576, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4785, PETRI_PLACES=340, PETRI_TRANSITIONS=401} [2024-06-28 02:54:49,851 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 296 predicate places. [2024-06-28 02:54:49,851 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 401 transitions, 4785 flow [2024-06-28 02:54:49,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:49,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:49,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:49,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 02:54:49,851 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:54:49,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:49,852 INFO L85 PathProgramCache]: Analyzing trace with hash -611823940, now seen corresponding path program 13 times [2024-06-28 02:54:49,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:49,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413382852] [2024-06-28 02:54:49,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:49,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:51,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:51,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:51,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413382852] [2024-06-28 02:54:51,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413382852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:51,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:51,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:54:51,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77879112] [2024-06-28 02:54:51,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:51,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:54:51,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:51,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:54:51,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:54:51,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:54:51,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 401 transitions, 4785 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:51,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:51,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:54:51,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:53,837 INFO L124 PetriNetUnfolderBase]: 5008/7834 cut-off events. [2024-06-28 02:54:53,837 INFO L125 PetriNetUnfolderBase]: For 2360194/2360214 co-relation queries the response was YES. [2024-06-28 02:54:53,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92384 conditions, 7834 events. 5008/7834 cut-off events. For 2360194/2360214 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 47492 event pairs, 1071 based on Foata normal form. 24/7836 useless extension candidates. Maximal degree in co-relation 92217. Up to 6847 conditions per place. [2024-06-28 02:54:53,960 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 339 selfloop transitions, 73 changer transitions 0/447 dead transitions. [2024-06-28 02:54:53,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 447 transitions, 5897 flow [2024-06-28 02:54:53,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:53,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:53,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-28 02:54:53,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452431289640592 [2024-06-28 02:54:53,961 INFO L175 Difference]: Start difference. First operand has 340 places, 401 transitions, 4785 flow. Second operand 11 states and 214 transitions. [2024-06-28 02:54:53,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 447 transitions, 5897 flow [2024-06-28 02:54:57,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 447 transitions, 5706 flow, removed 64 selfloop flow, removed 8 redundant places. [2024-06-28 02:54:57,157 INFO L231 Difference]: Finished difference. Result has 343 places, 402 transitions, 4859 flow [2024-06-28 02:54:57,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4594, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4859, PETRI_PLACES=343, PETRI_TRANSITIONS=402} [2024-06-28 02:54:57,157 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 299 predicate places. [2024-06-28 02:54:57,157 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 402 transitions, 4859 flow [2024-06-28 02:54:57,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:57,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:57,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:57,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 02:54:57,158 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:54:57,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:57,158 INFO L85 PathProgramCache]: Analyzing trace with hash -617186320, now seen corresponding path program 14 times [2024-06-28 02:54:57,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:57,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021672778] [2024-06-28 02:54:57,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:57,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:58,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:58,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:58,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021672778] [2024-06-28 02:54:58,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021672778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:58,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:58,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:54:58,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978008153] [2024-06-28 02:54:58,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:58,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:54:58,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:58,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:54:58,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:54:58,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:54:58,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 402 transitions, 4859 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:58,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:58,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:54:58,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:01,057 INFO L124 PetriNetUnfolderBase]: 5083/7959 cut-off events. [2024-06-28 02:55:01,057 INFO L125 PetriNetUnfolderBase]: For 2400354/2400374 co-relation queries the response was YES. [2024-06-28 02:55:01,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94265 conditions, 7959 events. 5083/7959 cut-off events. For 2400354/2400374 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 48484 event pairs, 1081 based on Foata normal form. 20/7957 useless extension candidates. Maximal degree in co-relation 94097. Up to 6990 conditions per place. [2024-06-28 02:55:01,191 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 335 selfloop transitions, 78 changer transitions 0/448 dead transitions. [2024-06-28 02:55:01,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 448 transitions, 5975 flow [2024-06-28 02:55:01,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:55:01,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:55:01,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 213 transitions. [2024-06-28 02:55:01,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4503171247357294 [2024-06-28 02:55:01,192 INFO L175 Difference]: Start difference. First operand has 343 places, 402 transitions, 4859 flow. Second operand 11 states and 213 transitions. [2024-06-28 02:55:01,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 448 transitions, 5975 flow [2024-06-28 02:55:04,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 448 transitions, 5764 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-28 02:55:04,459 INFO L231 Difference]: Finished difference. Result has 345 places, 403 transitions, 4925 flow [2024-06-28 02:55:04,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4648, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4925, PETRI_PLACES=345, PETRI_TRANSITIONS=403} [2024-06-28 02:55:04,459 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 301 predicate places. [2024-06-28 02:55:04,460 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 403 transitions, 4925 flow [2024-06-28 02:55:04,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:04,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:04,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:04,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 02:55:04,460 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:55:04,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:04,461 INFO L85 PathProgramCache]: Analyzing trace with hash -617330470, now seen corresponding path program 15 times [2024-06-28 02:55:04,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:04,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994731929] [2024-06-28 02:55:04,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:04,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:05,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:05,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:05,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994731929] [2024-06-28 02:55:05,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994731929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:05,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:05,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:55:05,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145694926] [2024-06-28 02:55:05,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:05,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:55:05,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:05,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:55:05,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:55:06,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:55:06,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 403 transitions, 4925 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:06,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:06,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:55:06,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:08,385 INFO L124 PetriNetUnfolderBase]: 5133/8055 cut-off events. [2024-06-28 02:55:08,386 INFO L125 PetriNetUnfolderBase]: For 2422346/2422366 co-relation queries the response was YES. [2024-06-28 02:55:08,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95015 conditions, 8055 events. 5133/8055 cut-off events. For 2422346/2422366 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 49356 event pairs, 1094 based on Foata normal form. 20/8053 useless extension candidates. Maximal degree in co-relation 94846. Up to 7076 conditions per place. [2024-06-28 02:55:08,511 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 333 selfloop transitions, 81 changer transitions 0/449 dead transitions. [2024-06-28 02:55:08,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 449 transitions, 6045 flow [2024-06-28 02:55:08,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:55:08,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:55:08,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-28 02:55:08,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44820295983086683 [2024-06-28 02:55:08,512 INFO L175 Difference]: Start difference. First operand has 345 places, 403 transitions, 4925 flow. Second operand 11 states and 212 transitions. [2024-06-28 02:55:08,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 449 transitions, 6045 flow [2024-06-28 02:55:12,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 449 transitions, 5822 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-28 02:55:12,369 INFO L231 Difference]: Finished difference. Result has 347 places, 404 transitions, 4987 flow [2024-06-28 02:55:12,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4702, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4987, PETRI_PLACES=347, PETRI_TRANSITIONS=404} [2024-06-28 02:55:12,370 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 303 predicate places. [2024-06-28 02:55:12,370 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 404 transitions, 4987 flow [2024-06-28 02:55:12,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:12,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:12,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:12,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 02:55:12,370 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:55:12,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:12,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1042281400, now seen corresponding path program 16 times [2024-06-28 02:55:12,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:12,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890521449] [2024-06-28 02:55:12,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:12,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:13,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:13,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:13,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890521449] [2024-06-28 02:55:13,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890521449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:13,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:13,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:55:13,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281632002] [2024-06-28 02:55:13,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:13,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:55:13,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:13,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:55:13,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:55:14,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:55:14,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 404 transitions, 4987 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:14,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:14,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:55:14,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:16,285 INFO L124 PetriNetUnfolderBase]: 5329/8391 cut-off events. [2024-06-28 02:55:16,285 INFO L125 PetriNetUnfolderBase]: For 2576580/2576600 co-relation queries the response was YES. [2024-06-28 02:55:16,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101123 conditions, 8391 events. 5329/8391 cut-off events. For 2576580/2576600 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 52103 event pairs, 1110 based on Foata normal form. 16/8385 useless extension candidates. Maximal degree in co-relation 100953. Up to 6734 conditions per place. [2024-06-28 02:55:16,436 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 335 selfloop transitions, 87 changer transitions 0/457 dead transitions. [2024-06-28 02:55:16,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 457 transitions, 6735 flow [2024-06-28 02:55:16,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:55:16,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:55:16,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-06-28 02:55:16,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45665961945031713 [2024-06-28 02:55:16,437 INFO L175 Difference]: Start difference. First operand has 347 places, 404 transitions, 4987 flow. Second operand 11 states and 216 transitions. [2024-06-28 02:55:16,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 457 transitions, 6735 flow [2024-06-28 02:55:20,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 457 transitions, 6504 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-28 02:55:20,746 INFO L231 Difference]: Finished difference. Result has 350 places, 407 transitions, 5238 flow [2024-06-28 02:55:20,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4756, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5238, PETRI_PLACES=350, PETRI_TRANSITIONS=407} [2024-06-28 02:55:20,746 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 306 predicate places. [2024-06-28 02:55:20,746 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 407 transitions, 5238 flow [2024-06-28 02:55:20,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:20,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:20,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:20,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 02:55:20,747 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:55:20,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:20,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1096808667, now seen corresponding path program 10 times [2024-06-28 02:55:20,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:20,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771104851] [2024-06-28 02:55:20,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:20,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:22,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:22,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:22,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771104851] [2024-06-28 02:55:22,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771104851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:22,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:22,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:55:22,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627392860] [2024-06-28 02:55:22,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:22,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:55:22,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:22,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:55:22,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:55:22,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:55:22,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 407 transitions, 5238 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:22,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:22,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:55:22,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:24,678 INFO L124 PetriNetUnfolderBase]: 5889/9066 cut-off events. [2024-06-28 02:55:24,678 INFO L125 PetriNetUnfolderBase]: For 2602981/2603001 co-relation queries the response was YES. [2024-06-28 02:55:24,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107773 conditions, 9066 events. 5889/9066 cut-off events. For 2602981/2603001 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 54210 event pairs, 1399 based on Foata normal form. 4/9060 useless extension candidates. Maximal degree in co-relation 107601. Up to 8807 conditions per place. [2024-06-28 02:55:24,805 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 399 selfloop transitions, 22 changer transitions 0/443 dead transitions. [2024-06-28 02:55:24,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 443 transitions, 6312 flow [2024-06-28 02:55:24,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:55:24,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:55:24,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 02:55:24,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069767441860465 [2024-06-28 02:55:24,806 INFO L175 Difference]: Start difference. First operand has 350 places, 407 transitions, 5238 flow. Second operand 10 states and 175 transitions. [2024-06-28 02:55:24,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 443 transitions, 6312 flow [2024-06-28 02:55:29,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 443 transitions, 6109 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-28 02:55:29,414 INFO L231 Difference]: Finished difference. Result has 353 places, 409 transitions, 5234 flow [2024-06-28 02:55:29,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5035, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5234, PETRI_PLACES=353, PETRI_TRANSITIONS=409} [2024-06-28 02:55:29,414 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 309 predicate places. [2024-06-28 02:55:29,414 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 409 transitions, 5234 flow [2024-06-28 02:55:29,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:29,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:29,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:29,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 02:55:29,415 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:55:29,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:29,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1421559087, now seen corresponding path program 11 times [2024-06-28 02:55:29,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:29,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069645673] [2024-06-28 02:55:29,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:29,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:30,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:30,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:30,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069645673] [2024-06-28 02:55:30,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069645673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:30,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:30,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:55:30,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771822328] [2024-06-28 02:55:30,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:30,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:55:30,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:30,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:55:30,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:55:30,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:55:30,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 409 transitions, 5234 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:30,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:30,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:55:30,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:33,100 INFO L124 PetriNetUnfolderBase]: 5906/9093 cut-off events. [2024-06-28 02:55:33,101 INFO L125 PetriNetUnfolderBase]: For 2614399/2614419 co-relation queries the response was YES. [2024-06-28 02:55:33,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107539 conditions, 9093 events. 5906/9093 cut-off events. For 2614399/2614419 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 54424 event pairs, 1383 based on Foata normal form. 4/9087 useless extension candidates. Maximal degree in co-relation 107365. Up to 8820 conditions per place. [2024-06-28 02:55:33,257 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 401 selfloop transitions, 22 changer transitions 0/445 dead transitions. [2024-06-28 02:55:33,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 445 transitions, 6312 flow [2024-06-28 02:55:33,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:55:33,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:55:33,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-28 02:55:33,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046511627906977 [2024-06-28 02:55:33,258 INFO L175 Difference]: Start difference. First operand has 353 places, 409 transitions, 5234 flow. Second operand 10 states and 174 transitions. [2024-06-28 02:55:33,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 445 transitions, 6312 flow [2024-06-28 02:55:37,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 445 transitions, 6135 flow, removed 70 selfloop flow, removed 7 redundant places. [2024-06-28 02:55:37,752 INFO L231 Difference]: Finished difference. Result has 356 places, 411 transitions, 5260 flow [2024-06-28 02:55:37,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5057, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5260, PETRI_PLACES=356, PETRI_TRANSITIONS=411} [2024-06-28 02:55:37,752 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 312 predicate places. [2024-06-28 02:55:37,752 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 411 transitions, 5260 flow [2024-06-28 02:55:37,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:37,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:37,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:37,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 02:55:37,752 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:55:37,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:37,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1273594499, now seen corresponding path program 12 times [2024-06-28 02:55:37,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:37,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879441137] [2024-06-28 02:55:37,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:37,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:39,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:39,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:39,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879441137] [2024-06-28 02:55:39,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879441137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:39,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:39,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:55:39,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374065534] [2024-06-28 02:55:39,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:39,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:55:39,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:39,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:55:39,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:55:39,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:55:39,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 411 transitions, 5260 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:39,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:39,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:55:39,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:41,541 INFO L124 PetriNetUnfolderBase]: 5945/9152 cut-off events. [2024-06-28 02:55:41,541 INFO L125 PetriNetUnfolderBase]: For 2659292/2659312 co-relation queries the response was YES. [2024-06-28 02:55:41,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108396 conditions, 9152 events. 5945/9152 cut-off events. For 2659292/2659312 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 54843 event pairs, 1399 based on Foata normal form. 4/9146 useless extension candidates. Maximal degree in co-relation 108221. Up to 8866 conditions per place. [2024-06-28 02:55:41,701 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 402 selfloop transitions, 27 changer transitions 0/451 dead transitions. [2024-06-28 02:55:41,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 451 transitions, 6399 flow [2024-06-28 02:55:41,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:55:41,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:55:41,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-28 02:55:41,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.413953488372093 [2024-06-28 02:55:41,702 INFO L175 Difference]: Start difference. First operand has 356 places, 411 transitions, 5260 flow. Second operand 10 states and 178 transitions. [2024-06-28 02:55:41,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 451 transitions, 6399 flow [2024-06-28 02:55:46,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 451 transitions, 6214 flow, removed 72 selfloop flow, removed 8 redundant places. [2024-06-28 02:55:46,310 INFO L231 Difference]: Finished difference. Result has 359 places, 416 transitions, 5339 flow [2024-06-28 02:55:46,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5075, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5339, PETRI_PLACES=359, PETRI_TRANSITIONS=416} [2024-06-28 02:55:46,311 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 315 predicate places. [2024-06-28 02:55:46,311 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 416 transitions, 5339 flow [2024-06-28 02:55:46,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:46,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:46,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:46,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 02:55:46,311 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:55:46,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:46,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1273603799, now seen corresponding path program 13 times [2024-06-28 02:55:46,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:46,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770013992] [2024-06-28 02:55:46,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:46,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:47,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:47,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:47,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770013992] [2024-06-28 02:55:47,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770013992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:47,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:47,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:55:47,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735729684] [2024-06-28 02:55:47,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:47,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:55:47,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:47,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:55:47,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:55:47,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:55:47,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 416 transitions, 5339 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:47,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:47,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:55:47,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:50,169 INFO L124 PetriNetUnfolderBase]: 5962/9179 cut-off events. [2024-06-28 02:55:50,169 INFO L125 PetriNetUnfolderBase]: For 2704515/2704535 co-relation queries the response was YES. [2024-06-28 02:55:50,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109121 conditions, 9179 events. 5962/9179 cut-off events. For 2704515/2704535 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 55096 event pairs, 1404 based on Foata normal form. 4/9173 useless extension candidates. Maximal degree in co-relation 108944. Up to 8893 conditions per place. [2024-06-28 02:55:50,335 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 405 selfloop transitions, 26 changer transitions 0/453 dead transitions. [2024-06-28 02:55:50,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 453 transitions, 6447 flow [2024-06-28 02:55:50,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:55:50,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:55:50,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-28 02:55:50,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116279069767442 [2024-06-28 02:55:50,336 INFO L175 Difference]: Start difference. First operand has 359 places, 416 transitions, 5339 flow. Second operand 10 states and 177 transitions. [2024-06-28 02:55:50,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 453 transitions, 6447 flow [2024-06-28 02:55:55,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 453 transitions, 6246 flow, removed 77 selfloop flow, removed 7 redundant places. [2024-06-28 02:55:55,651 INFO L231 Difference]: Finished difference. Result has 362 places, 418 transitions, 5357 flow [2024-06-28 02:55:55,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5138, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5357, PETRI_PLACES=362, PETRI_TRANSITIONS=418} [2024-06-28 02:55:55,651 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 318 predicate places. [2024-06-28 02:55:55,651 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 418 transitions, 5357 flow [2024-06-28 02:55:55,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:55,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:55,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:55,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 02:55:55,651 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:55:55,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:55,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1835464407, now seen corresponding path program 14 times [2024-06-28 02:55:55,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:55,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293155098] [2024-06-28 02:55:55,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:55,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:56,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:56,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:56,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293155098] [2024-06-28 02:55:56,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293155098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:56,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:56,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:55:56,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576020547] [2024-06-28 02:55:56,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:56,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:55:56,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:56,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:55:56,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:55:57,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:55:57,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 418 transitions, 5357 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:57,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:57,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:55:57,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:59,792 INFO L124 PetriNetUnfolderBase]: 5979/9206 cut-off events. [2024-06-28 02:55:59,793 INFO L125 PetriNetUnfolderBase]: For 2749972/2749992 co-relation queries the response was YES. [2024-06-28 02:55:59,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109752 conditions, 9206 events. 5979/9206 cut-off events. For 2749972/2749992 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 55261 event pairs, 1409 based on Foata normal form. 4/9200 useless extension candidates. Maximal degree in co-relation 109574. Up to 8901 conditions per place. [2024-06-28 02:55:59,929 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 404 selfloop transitions, 28 changer transitions 0/454 dead transitions. [2024-06-28 02:55:59,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 454 transitions, 6467 flow [2024-06-28 02:55:59,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:55:59,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:55:59,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 02:55:59,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069767441860465 [2024-06-28 02:55:59,930 INFO L175 Difference]: Start difference. First operand has 362 places, 418 transitions, 5357 flow. Second operand 10 states and 175 transitions. [2024-06-28 02:55:59,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 454 transitions, 6467 flow [2024-06-28 02:56:04,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 454 transitions, 6266 flow, removed 76 selfloop flow, removed 8 redundant places. [2024-06-28 02:56:04,901 INFO L231 Difference]: Finished difference. Result has 364 places, 420 transitions, 5384 flow [2024-06-28 02:56:04,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5156, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5384, PETRI_PLACES=364, PETRI_TRANSITIONS=420} [2024-06-28 02:56:04,901 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 320 predicate places. [2024-06-28 02:56:04,901 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 420 transitions, 5384 flow [2024-06-28 02:56:04,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:04,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:04,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:04,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 02:56:04,902 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:56:04,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:04,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1835454828, now seen corresponding path program 1 times [2024-06-28 02:56:04,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:04,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508592046] [2024-06-28 02:56:04,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:04,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:06,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:06,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:06,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508592046] [2024-06-28 02:56:06,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508592046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:06,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:06,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:56:06,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134634525] [2024-06-28 02:56:06,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:06,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:56:06,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:06,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:56:06,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:56:06,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:56:06,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 420 transitions, 5384 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:06,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:06,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:56:06,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:09,000 INFO L124 PetriNetUnfolderBase]: 5989/9224 cut-off events. [2024-06-28 02:56:09,000 INFO L125 PetriNetUnfolderBase]: For 2751343/2751345 co-relation queries the response was YES. [2024-06-28 02:56:09,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109470 conditions, 9224 events. 5989/9224 cut-off events. For 2751343/2751345 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 55421 event pairs, 1423 based on Foata normal form. 2/9220 useless extension candidates. Maximal degree in co-relation 109291. Up to 8920 conditions per place. [2024-06-28 02:56:09,141 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 404 selfloop transitions, 34 changer transitions 0/460 dead transitions. [2024-06-28 02:56:09,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 460 transitions, 6558 flow [2024-06-28 02:56:09,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:56:09,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:56:09,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-28 02:56:09,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116279069767442 [2024-06-28 02:56:09,142 INFO L175 Difference]: Start difference. First operand has 364 places, 420 transitions, 5384 flow. Second operand 10 states and 177 transitions. [2024-06-28 02:56:09,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 460 transitions, 6558 flow [2024-06-28 02:56:14,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 460 transitions, 6350 flow, removed 78 selfloop flow, removed 8 redundant places. [2024-06-28 02:56:14,420 INFO L231 Difference]: Finished difference. Result has 366 places, 426 transitions, 5476 flow [2024-06-28 02:56:14,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5176, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5476, PETRI_PLACES=366, PETRI_TRANSITIONS=426} [2024-06-28 02:56:14,421 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 322 predicate places. [2024-06-28 02:56:14,421 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 426 transitions, 5476 flow [2024-06-28 02:56:14,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:14,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:14,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:14,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 02:56:14,421 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:56:14,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:14,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1266185189, now seen corresponding path program 15 times [2024-06-28 02:56:14,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:14,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296500572] [2024-06-28 02:56:14,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:14,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:15,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:15,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:15,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296500572] [2024-06-28 02:56:15,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296500572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:15,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:15,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:56:15,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939019130] [2024-06-28 02:56:15,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:15,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:56:15,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:15,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:56:15,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:56:15,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:56:15,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 426 transitions, 5476 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:15,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:15,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:56:15,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:18,446 INFO L124 PetriNetUnfolderBase]: 6006/9251 cut-off events. [2024-06-28 02:56:18,446 INFO L125 PetriNetUnfolderBase]: For 2810775/2810777 co-relation queries the response was YES. [2024-06-28 02:56:18,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110524 conditions, 9251 events. 6006/9251 cut-off events. For 2810775/2810777 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 55648 event pairs, 1389 based on Foata normal form. 4/9249 useless extension candidates. Maximal degree in co-relation 110344. Up to 8911 conditions per place. [2024-06-28 02:56:18,693 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 409 selfloop transitions, 35 changer transitions 0/466 dead transitions. [2024-06-28 02:56:18,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 466 transitions, 6670 flow [2024-06-28 02:56:18,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:56:18,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:56:18,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-28 02:56:18,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41627906976744183 [2024-06-28 02:56:18,694 INFO L175 Difference]: Start difference. First operand has 366 places, 426 transitions, 5476 flow. Second operand 10 states and 179 transitions. [2024-06-28 02:56:18,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 466 transitions, 6670 flow [2024-06-28 02:56:24,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 466 transitions, 6462 flow, removed 74 selfloop flow, removed 8 redundant places. [2024-06-28 02:56:24,804 INFO L231 Difference]: Finished difference. Result has 369 places, 431 transitions, 5577 flow [2024-06-28 02:56:24,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5268, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5577, PETRI_PLACES=369, PETRI_TRANSITIONS=431} [2024-06-28 02:56:24,804 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 325 predicate places. [2024-06-28 02:56:24,804 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 431 transitions, 5577 flow [2024-06-28 02:56:24,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:24,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:24,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:24,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 02:56:24,805 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:56:24,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:24,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1835455107, now seen corresponding path program 16 times [2024-06-28 02:56:24,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:24,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116365145] [2024-06-28 02:56:24,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:24,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:25,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:25,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:25,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116365145] [2024-06-28 02:56:25,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116365145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:25,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:25,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:56:25,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793906153] [2024-06-28 02:56:25,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:25,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:56:25,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:25,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:56:25,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:56:26,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:56:26,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 431 transitions, 5577 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:26,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:26,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:56:26,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:28,822 INFO L124 PetriNetUnfolderBase]: 5998/9239 cut-off events. [2024-06-28 02:56:28,822 INFO L125 PetriNetUnfolderBase]: For 2832867/2832869 co-relation queries the response was YES. [2024-06-28 02:56:28,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110714 conditions, 9239 events. 5998/9239 cut-off events. For 2832867/2832869 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 55520 event pairs, 1397 based on Foata normal form. 4/9237 useless extension candidates. Maximal degree in co-relation 110532. Up to 8931 conditions per place. [2024-06-28 02:56:28,982 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 413 selfloop transitions, 32 changer transitions 0/467 dead transitions. [2024-06-28 02:56:28,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 467 transitions, 6725 flow [2024-06-28 02:56:28,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:56:28,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:56:28,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-28 02:56:28,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40930232558139534 [2024-06-28 02:56:28,983 INFO L175 Difference]: Start difference. First operand has 369 places, 431 transitions, 5577 flow. Second operand 10 states and 176 transitions. [2024-06-28 02:56:28,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 467 transitions, 6725 flow [2024-06-28 02:56:34,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 467 transitions, 6468 flow, removed 96 selfloop flow, removed 7 redundant places. [2024-06-28 02:56:34,060 INFO L231 Difference]: Finished difference. Result has 372 places, 433 transitions, 5568 flow [2024-06-28 02:56:34,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5320, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5568, PETRI_PLACES=372, PETRI_TRANSITIONS=433} [2024-06-28 02:56:34,060 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 328 predicate places. [2024-06-28 02:56:34,060 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 433 transitions, 5568 flow [2024-06-28 02:56:34,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:34,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:34,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:34,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 02:56:34,063 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:56:34,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:34,063 INFO L85 PathProgramCache]: Analyzing trace with hash 302980722, now seen corresponding path program 17 times [2024-06-28 02:56:34,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:34,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612352801] [2024-06-28 02:56:34,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:34,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:35,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:35,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:35,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612352801] [2024-06-28 02:56:35,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612352801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:35,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:35,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:56:35,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296321442] [2024-06-28 02:56:35,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:35,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:56:35,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:35,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:56:35,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:56:35,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:56:35,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 433 transitions, 5568 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:35,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:35,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:56:35,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:38,058 INFO L124 PetriNetUnfolderBase]: 5474/8626 cut-off events. [2024-06-28 02:56:38,058 INFO L125 PetriNetUnfolderBase]: For 2902048/2902050 co-relation queries the response was YES. [2024-06-28 02:56:38,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102332 conditions, 8626 events. 5474/8626 cut-off events. For 2902048/2902050 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 53900 event pairs, 1188 based on Foata normal form. 40/8643 useless extension candidates. Maximal degree in co-relation 102149. Up to 7783 conditions per place. [2024-06-28 02:56:38,321 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 397 selfloop transitions, 41 changer transitions 0/474 dead transitions. [2024-06-28 02:56:38,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 474 transitions, 6758 flow [2024-06-28 02:56:38,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:56:38,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:56:38,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-28 02:56:38,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-28 02:56:38,322 INFO L175 Difference]: Start difference. First operand has 372 places, 433 transitions, 5568 flow. Second operand 10 states and 190 transitions. [2024-06-28 02:56:38,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 474 transitions, 6758 flow [2024-06-28 02:56:43,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 474 transitions, 6476 flow, removed 112 selfloop flow, removed 8 redundant places. [2024-06-28 02:56:43,426 INFO L231 Difference]: Finished difference. Result has 374 places, 434 transitions, 5514 flow [2024-06-28 02:56:43,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5288, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5514, PETRI_PLACES=374, PETRI_TRANSITIONS=434} [2024-06-28 02:56:43,427 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 330 predicate places. [2024-06-28 02:56:43,427 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 434 transitions, 5514 flow [2024-06-28 02:56:43,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:43,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:43,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:43,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 02:56:43,427 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)] === [2024-06-28 02:56:43,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:43,428 INFO L85 PathProgramCache]: Analyzing trace with hash -137079137, now seen corresponding path program 4 times [2024-06-28 02:56:43,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:43,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111888779] [2024-06-28 02:56:43,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:43,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:44,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:44,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:44,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111888779] [2024-06-28 02:56:44,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111888779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:44,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:44,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:56:44,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842395285] [2024-06-28 02:56:44,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:44,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:56:44,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:44,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:56:44,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:56:44,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:56:44,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 434 transitions, 5514 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) [2024-06-28 02:56:44,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:44,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:56:44,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:46,846 INFO L124 PetriNetUnfolderBase]: 5656/8891 cut-off events. [2024-06-28 02:56:46,847 INFO L125 PetriNetUnfolderBase]: For 2738050/2738090 co-relation queries the response was YES. [2024-06-28 02:56:46,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104927 conditions, 8891 events. 5656/8891 cut-off events. For 2738050/2738090 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 55247 event pairs, 1381 based on Foata normal form. 6/8840 useless extension candidates. Maximal degree in co-relation 104743. Up to 8348 conditions per place. [2024-06-28 02:56:46,995 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 357 selfloop transitions, 23 changer transitions 0/454 dead transitions. [2024-06-28 02:56:46,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 454 transitions, 6390 flow [2024-06-28 02:56:46,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:56:46,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:56:46,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 02:56:46,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41569767441860467 [2024-06-28 02:56:46,996 INFO L175 Difference]: Start difference. First operand has 374 places, 434 transitions, 5514 flow. Second operand 8 states and 143 transitions. [2024-06-28 02:56:46,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 454 transitions, 6390 flow [2024-06-28 02:56:52,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 454 transitions, 6222 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-28 02:56:52,675 INFO L231 Difference]: Finished difference. Result has 374 places, 438 transitions, 5467 flow [2024-06-28 02:56:52,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5346, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5467, PETRI_PLACES=374, PETRI_TRANSITIONS=438} [2024-06-28 02:56:52,676 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 330 predicate places. [2024-06-28 02:56:52,676 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 438 transitions, 5467 flow [2024-06-28 02:56:52,676 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) [2024-06-28 02:56:52,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:52,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:52,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 02:56:52,677 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)] === [2024-06-28 02:56:52,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:52,677 INFO L85 PathProgramCache]: Analyzing trace with hash -2032045725, now seen corresponding path program 5 times [2024-06-28 02:56:52,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:52,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27487758] [2024-06-28 02:56:52,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:52,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:53,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:53,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:53,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27487758] [2024-06-28 02:56:53,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27487758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:53,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:53,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:56:53,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554619784] [2024-06-28 02:56:53,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:53,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:56:53,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:53,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:56:53,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:56:53,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:56:53,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 438 transitions, 5467 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) [2024-06-28 02:56:53,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:53,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:56:53,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:56,289 INFO L124 PetriNetUnfolderBase]: 5669/8910 cut-off events. [2024-06-28 02:56:56,289 INFO L125 PetriNetUnfolderBase]: For 2720407/2720447 co-relation queries the response was YES. [2024-06-28 02:56:56,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104568 conditions, 8910 events. 5669/8910 cut-off events. For 2720407/2720447 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 55350 event pairs, 1381 based on Foata normal form. 1/8858 useless extension candidates. Maximal degree in co-relation 104383. Up to 8334 conditions per place. [2024-06-28 02:56:56,430 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 351 selfloop transitions, 32 changer transitions 0/457 dead transitions. [2024-06-28 02:56:56,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 457 transitions, 6605 flow [2024-06-28 02:56:56,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:56:56,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:56:56,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 02:56:56,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41569767441860467 [2024-06-28 02:56:56,431 INFO L175 Difference]: Start difference. First operand has 374 places, 438 transitions, 5467 flow. Second operand 8 states and 143 transitions. [2024-06-28 02:56:56,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 457 transitions, 6605 flow [2024-06-28 02:57:01,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 457 transitions, 6524 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:01,859 INFO L231 Difference]: Finished difference. Result has 376 places, 442 transitions, 5536 flow [2024-06-28 02:57:01,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5386, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5536, PETRI_PLACES=376, PETRI_TRANSITIONS=442} [2024-06-28 02:57:01,860 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 332 predicate places. [2024-06-28 02:57:01,860 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 442 transitions, 5536 flow [2024-06-28 02:57:01,860 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) [2024-06-28 02:57:01,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:01,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:01,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 02:57:01,860 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)] === [2024-06-28 02:57:01,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:01,861 INFO L85 PathProgramCache]: Analyzing trace with hash -121841552, now seen corresponding path program 1 times [2024-06-28 02:57:01,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:01,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923244013] [2024-06-28 02:57:01,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:01,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:02,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:02,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:02,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923244013] [2024-06-28 02:57:02,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923244013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:02,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:02,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:02,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359352284] [2024-06-28 02:57:02,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:02,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:02,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:02,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:02,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:02,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:02,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 442 transitions, 5536 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) [2024-06-28 02:57:02,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:02,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:02,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:05,631 INFO L124 PetriNetUnfolderBase]: 5663/8896 cut-off events. [2024-06-28 02:57:05,631 INFO L125 PetriNetUnfolderBase]: For 2743920/2743960 co-relation queries the response was YES. [2024-06-28 02:57:05,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104391 conditions, 8896 events. 5663/8896 cut-off events. For 2743920/2743960 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 55241 event pairs, 1382 based on Foata normal form. 2/8844 useless extension candidates. Maximal degree in co-relation 104205. Up to 8369 conditions per place. [2024-06-28 02:57:05,778 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 367 selfloop transitions, 17 changer transitions 0/458 dead transitions. [2024-06-28 02:57:05,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 458 transitions, 6396 flow [2024-06-28 02:57:05,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:05,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:05,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 02:57:05,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39825581395348836 [2024-06-28 02:57:05,779 INFO L175 Difference]: Start difference. First operand has 376 places, 442 transitions, 5536 flow. Second operand 8 states and 137 transitions. [2024-06-28 02:57:05,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 458 transitions, 6396 flow [2024-06-28 02:57:11,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 458 transitions, 6328 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 02:57:11,032 INFO L231 Difference]: Finished difference. Result has 380 places, 445 transitions, 5576 flow [2024-06-28 02:57:11,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5468, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5576, PETRI_PLACES=380, PETRI_TRANSITIONS=445} [2024-06-28 02:57:11,033 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 336 predicate places. [2024-06-28 02:57:11,033 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 445 transitions, 5576 flow [2024-06-28 02:57:11,033 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) [2024-06-28 02:57:11,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:11,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:11,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 02:57:11,033 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)] === [2024-06-28 02:57:11,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:11,034 INFO L85 PathProgramCache]: Analyzing trace with hash -136646687, now seen corresponding path program 6 times [2024-06-28 02:57:11,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:11,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734952721] [2024-06-28 02:57:11,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:11,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:11,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:11,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:11,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734952721] [2024-06-28 02:57:11,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734952721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:11,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:11,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:11,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414795284] [2024-06-28 02:57:11,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:11,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:11,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:11,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:11,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:12,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:12,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 445 transitions, 5576 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) [2024-06-28 02:57:12,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:12,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:12,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:14,567 INFO L124 PetriNetUnfolderBase]: 5656/8895 cut-off events. [2024-06-28 02:57:14,567 INFO L125 PetriNetUnfolderBase]: For 2784099/2784109 co-relation queries the response was YES. [2024-06-28 02:57:14,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104359 conditions, 8895 events. 5656/8895 cut-off events. For 2784099/2784109 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 55286 event pairs, 1377 based on Foata normal form. 9/8851 useless extension candidates. Maximal degree in co-relation 104171. Up to 8352 conditions per place. [2024-06-28 02:57:14,719 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 368 selfloop transitions, 21 changer transitions 0/463 dead transitions. [2024-06-28 02:57:14,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 463 transitions, 6478 flow [2024-06-28 02:57:14,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:14,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:14,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 02:57:14,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069767441860465 [2024-06-28 02:57:14,719 INFO L175 Difference]: Start difference. First operand has 380 places, 445 transitions, 5576 flow. Second operand 8 states and 140 transitions. [2024-06-28 02:57:14,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 463 transitions, 6478 flow