./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix035_power.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix035_power.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 76401ed0 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix035_power.opt_rmo.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix035_power.opt_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-76401ed-m [2024-06-20 16:14:51,687 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 16:14:51,738 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 16:14:51,743 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 16:14:51,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 16:14:51,771 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 16:14:51,771 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 16:14:51,772 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 16:14:51,772 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 16:14:51,775 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 16:14:51,775 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 16:14:51,776 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 16:14:51,777 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 16:14:51,777 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 16:14:51,778 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 16:14:51,778 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 16:14:51,778 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 16:14:51,778 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 16:14:51,778 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 16:14:51,779 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 16:14:51,780 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 16:14:51,780 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 16:14:51,780 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 16:14:51,780 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 16:14:51,781 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 16:14:51,781 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 16:14:51,781 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 16:14:51,781 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 16:14:51,782 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 16:14:51,782 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 16:14:51,783 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 16:14:51,783 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 16:14:51,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 16:14:51,783 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 16:14:51,783 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 16:14:51,783 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 16:14:51,784 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 16:14:51,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 16:14:51,784 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 16:14:51,784 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 16:14:51,784 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 16:14:51,785 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 16:14:51,785 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 16:14:51,785 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 16:14:52,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 16:14:52,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 16:14:52,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 16:14:52,049 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 16:14:52,050 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 16:14:52,050 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix035_power.opt_rmo.opt.yml/witness.yml [2024-06-20 16:14:52,176 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 16:14:52,176 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 16:14:52,177 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix035_power.opt_rmo.opt.i [2024-06-20 16:14:53,245 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 16:14:53,416 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 16:14:53,417 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix035_power.opt_rmo.opt.i [2024-06-20 16:14:53,428 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85b7756bd/1ccba58fcbee4da9a5f0b903485d48ff/FLAGde5094871 [2024-06-20 16:14:53,438 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85b7756bd/1ccba58fcbee4da9a5f0b903485d48ff [2024-06-20 16:14:53,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 16:14:53,440 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 16:14:53,441 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 16:14:53,441 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 16:14:53,444 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 16:14:53,445 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:14:52" (1/2) ... [2024-06-20 16:14:53,446 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51961e98 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:14:53, skipping insertion in model container [2024-06-20 16:14:53,446 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:14:52" (1/2) ... [2024-06-20 16:14:53,447 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3617ef04 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:14:53, skipping insertion in model container [2024-06-20 16:14:53,447 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 04:14:53" (2/2) ... [2024-06-20 16:14:53,447 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51961e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:14:53, skipping insertion in model container [2024-06-20 16:14:53,447 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 04:14:53" (2/2) ... [2024-06-20 16:14:53,448 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 16:14:53,520 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 16:14:53,522 INFO L97 edCorrectnessWitness]: Location invariant before [L844-L844] ((((((((((((((((((((! multithreaded || x$flush_delayed == (_Bool)0) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-20 16:14:53,522 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] ((((((((((((((((((((! multithreaded || x$flush_delayed == (_Bool)0) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-20 16:14:53,522 INFO L97 edCorrectnessWitness]: Location invariant before [L847-L847] ((((((((((((((((((((! multithreaded || x$flush_delayed == (_Bool)0) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-20 16:14:53,522 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 16:14:53,522 INFO L106 edCorrectnessWitness]: ghost_update [L842-L842] multithreaded = 1; [2024-06-20 16:14:53,560 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 16:14:53,892 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 16:14:53,903 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 16:14:54,047 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 16:14:54,111 INFO L206 MainTranslator]: Completed translation [2024-06-20 16:14:54,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:14:54 WrapperNode [2024-06-20 16:14:54,124 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 16:14:54,126 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 16:14:54,126 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 16:14:54,126 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 16:14:54,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:14:54" (1/1) ... [2024-06-20 16:14:54,170 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:14:54" (1/1) ... [2024-06-20 16:14:54,211 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 128 [2024-06-20 16:14:54,212 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 16:14:54,212 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 16:14:54,213 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 16:14:54,213 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 16:14:54,221 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:14:54" (1/1) ... [2024-06-20 16:14:54,221 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:14:54" (1/1) ... [2024-06-20 16:14:54,224 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:14:54" (1/1) ... [2024-06-20 16:14:54,250 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-20 16:14:54,250 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:14:54" (1/1) ... [2024-06-20 16:14:54,250 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:14:54" (1/1) ... [2024-06-20 16:14:54,266 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:14:54" (1/1) ... [2024-06-20 16:14:54,268 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:14:54" (1/1) ... [2024-06-20 16:14:54,269 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:14:54" (1/1) ... [2024-06-20 16:14:54,270 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:14:54" (1/1) ... [2024-06-20 16:14:54,273 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 16:14:54,280 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 16:14:54,281 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 16:14:54,281 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 16:14:54,282 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:14:54" (1/1) ... [2024-06-20 16:14:54,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 16:14:54,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 16:14:54,308 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-20 16:14:54,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-20 16:14:54,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-20 16:14:54,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 16:14:54,345 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-20 16:14:54,345 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-20 16:14:54,345 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-20 16:14:54,345 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-20 16:14:54,345 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-20 16:14:54,346 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-20 16:14:54,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 16:14:54,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-20 16:14:54,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 16:14:54,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 16:14:54,347 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-20 16:14:54,439 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 16:14:54,441 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 16:14:54,781 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 16:14:54,781 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 16:14:54,946 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 16:14:54,946 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-20 16:14:54,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 04:14:54 BoogieIcfgContainer [2024-06-20 16:14:54,947 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 16:14:54,950 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 16:14:54,950 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 16:14:54,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 16:14:54,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:14:52" (1/4) ... [2024-06-20 16:14:54,953 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c20a14 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 04:14:54, skipping insertion in model container [2024-06-20 16:14:54,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 04:14:53" (2/4) ... [2024-06-20 16:14:54,953 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c20a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 04:14:54, skipping insertion in model container [2024-06-20 16:14:54,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:14:54" (3/4) ... [2024-06-20 16:14:54,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c20a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 04:14:54, skipping insertion in model container [2024-06-20 16:14:54,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 04:14:54" (4/4) ... [2024-06-20 16:14:54,955 INFO L112 eAbstractionObserver]: Analyzing ICFG mix035_power.opt_rmo.opt.i [2024-06-20 16:14:54,968 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 16:14:54,968 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-20 16:14:54,968 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 16:14:55,010 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-20 16:14:55,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 42 transitions, 96 flow [2024-06-20 16:14:55,066 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2024-06-20 16:14:55,066 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 16:14:55,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 39 events. 0/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-20 16:14:55,068 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 42 transitions, 96 flow [2024-06-20 16:14:55,070 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2024-06-20 16:14:55,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 16:14:55,086 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;@12b8a8b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 16:14:55,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-20 16:14:55,090 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 16:14:55,090 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-20 16:14:55,090 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 16:14:55,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:14:55,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-20 16:14:55,091 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:14:55,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:14:55,094 INFO L85 PathProgramCache]: Analyzing trace with hash 371757946, now seen corresponding path program 1 times [2024-06-20 16:14:55,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:14:55,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627060811] [2024-06-20 16:14:55,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:14:55,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:14:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:14:55,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:14:55,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:14:55,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627060811] [2024-06-20 16:14:55,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627060811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:14:55,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:14:55,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 16:14:55,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047348693] [2024-06-20 16:14:55,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:14:55,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 16:14:55,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:14:55,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 16:14:55,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 16:14:56,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-20 16:14:56,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:14:56,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:14:56,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-20 16:14:56,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:14:56,268 INFO L124 PetriNetUnfolderBase]: 1116/1796 cut-off events. [2024-06-20 16:14:56,269 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-20 16:14:56,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3547 conditions, 1796 events. 1116/1796 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8974 event pairs, 765 based on Foata normal form. 1/1731 useless extension candidates. Maximal degree in co-relation 3535. Up to 1676 conditions per place. [2024-06-20 16:14:56,325 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 31 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-06-20 16:14:56,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 171 flow [2024-06-20 16:14:56,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 16:14:56,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 16:14:56,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-20 16:14:56,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2024-06-20 16:14:56,336 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 3 states and 80 transitions. [2024-06-20 16:14:56,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 171 flow [2024-06-20 16:14:56,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 43 transitions, 166 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-20 16:14:56,342 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 102 flow [2024-06-20 16:14:56,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-06-20 16:14:56,348 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-06-20 16:14:56,348 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 102 flow [2024-06-20 16:14:56,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:14:56,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:14:56,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:14:56,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 16:14:56,349 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:14:56,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:14:56,350 INFO L85 PathProgramCache]: Analyzing trace with hash 777140057, now seen corresponding path program 1 times [2024-06-20 16:14:56,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:14:56,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815498306] [2024-06-20 16:14:56,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:14:56,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:14:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:14:57,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:14:57,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:14:57,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815498306] [2024-06-20 16:14:57,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815498306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:14:57,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:14:57,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 16:14:57,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435676835] [2024-06-20 16:14:57,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:14:57,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 16:14:57,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:14:57,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 16:14:57,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-20 16:14:57,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-06-20 16:14:57,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:14:57,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:14:57,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-06-20 16:14:57,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:14:57,324 INFO L124 PetriNetUnfolderBase]: 1274/1990 cut-off events. [2024-06-20 16:14:57,324 INFO L125 PetriNetUnfolderBase]: For 384/384 co-relation queries the response was YES. [2024-06-20 16:14:57,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4496 conditions, 1990 events. 1274/1990 cut-off events. For 384/384 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9739 event pairs, 608 based on Foata normal form. 6/1964 useless extension candidates. Maximal degree in co-relation 4484. Up to 1873 conditions per place. [2024-06-20 16:14:57,333 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 40 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2024-06-20 16:14:57,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 54 transitions, 244 flow [2024-06-20 16:14:57,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 16:14:57,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 16:14:57,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-06-20 16:14:57,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-06-20 16:14:57,335 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 102 flow. Second operand 4 states and 102 transitions. [2024-06-20 16:14:57,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 54 transitions, 244 flow [2024-06-20 16:14:57,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 54 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-20 16:14:57,336 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 138 flow [2024-06-20 16:14:57,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-20 16:14:57,337 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-06-20 16:14:57,337 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 138 flow [2024-06-20 16:14:57,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:14:57,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:14:57,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:14:57,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 16:14:57,338 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:14:57,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:14:57,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1907000598, now seen corresponding path program 1 times [2024-06-20 16:14:57,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:14:57,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060935517] [2024-06-20 16:14:57,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:14:57,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:14:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:14:58,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:14:58,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:14:58,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060935517] [2024-06-20 16:14:58,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060935517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:14:58,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:14:58,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 16:14:58,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920931914] [2024-06-20 16:14:58,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:14:58,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 16:14:58,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:14:58,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 16:14:58,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-20 16:14:58,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-06-20 16:14:58,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:14:58,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:14:58,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-06-20 16:14:58,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:14:59,034 INFO L124 PetriNetUnfolderBase]: 1265/1973 cut-off events. [2024-06-20 16:14:59,034 INFO L125 PetriNetUnfolderBase]: For 1078/1078 co-relation queries the response was YES. [2024-06-20 16:14:59,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4970 conditions, 1973 events. 1265/1973 cut-off events. For 1078/1078 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9651 event pairs, 445 based on Foata normal form. 6/1947 useless extension candidates. Maximal degree in co-relation 4956. Up to 1828 conditions per place. [2024-06-20 16:14:59,045 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 50 selfloop transitions, 12 changer transitions 0/69 dead transitions. [2024-06-20 16:14:59,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 69 transitions, 350 flow [2024-06-20 16:14:59,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:14:59,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:14:59,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-20 16:14:59,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5674603174603174 [2024-06-20 16:14:59,051 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 138 flow. Second operand 6 states and 143 transitions. [2024-06-20 16:14:59,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 69 transitions, 350 flow [2024-06-20 16:14:59,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 69 transitions, 330 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-20 16:14:59,054 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 181 flow [2024-06-20 16:14:59,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=181, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-06-20 16:14:59,055 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2024-06-20 16:14:59,055 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 181 flow [2024-06-20 16:14:59,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:14:59,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:14:59,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:14:59,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 16:14:59,057 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)] === [2024-06-20 16:14:59,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:14:59,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1123968294, now seen corresponding path program 1 times [2024-06-20 16:14:59,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:14:59,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541938778] [2024-06-20 16:14:59,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:14:59,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:14:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:14:59,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:14:59,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:14:59,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541938778] [2024-06-20 16:14:59,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541938778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:14:59,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:14:59,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 16:14:59,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406990296] [2024-06-20 16:14:59,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:14:59,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 16:14:59,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:14:59,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 16:14:59,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-20 16:14:59,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-20 16:14:59,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:14:59,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:14:59,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-20 16:14:59,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:00,095 INFO L124 PetriNetUnfolderBase]: 1090/1819 cut-off events. [2024-06-20 16:15:00,095 INFO L125 PetriNetUnfolderBase]: For 1770/1770 co-relation queries the response was YES. [2024-06-20 16:15:00,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4894 conditions, 1819 events. 1090/1819 cut-off events. For 1770/1770 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 9430 event pairs, 460 based on Foata normal form. 2/1813 useless extension candidates. Maximal degree in co-relation 4877. Up to 1627 conditions per place. [2024-06-20 16:15:00,104 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 42 selfloop transitions, 8 changer transitions 0/57 dead transitions. [2024-06-20 16:15:00,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 323 flow [2024-06-20 16:15:00,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 16:15:00,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 16:15:00,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-06-20 16:15:00,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49523809523809526 [2024-06-20 16:15:00,105 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 181 flow. Second operand 5 states and 104 transitions. [2024-06-20 16:15:00,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 323 flow [2024-06-20 16:15:00,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 296 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-20 16:15:00,107 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 198 flow [2024-06-20 16:15:00,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=154, 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=198, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-20 16:15:00,108 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2024-06-20 16:15:00,108 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 198 flow [2024-06-20 16:15:00,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:00,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:00,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:00,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-20 16:15:00,108 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:15:00,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:00,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1841701687, now seen corresponding path program 1 times [2024-06-20 16:15:00,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:00,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356956694] [2024-06-20 16:15:00,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:00,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:00,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:00,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:00,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356956694] [2024-06-20 16:15:00,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356956694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:00,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:00,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:15:00,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562925051] [2024-06-20 16:15:00,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:00,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:15:00,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:00,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:15:00,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:15:00,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:15:00,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:00,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:00,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:15:00,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:01,257 INFO L124 PetriNetUnfolderBase]: 1282/2026 cut-off events. [2024-06-20 16:15:01,258 INFO L125 PetriNetUnfolderBase]: For 3106/3106 co-relation queries the response was YES. [2024-06-20 16:15:01,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6027 conditions, 2026 events. 1282/2026 cut-off events. For 3106/3106 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 10014 event pairs, 530 based on Foata normal form. 4/2017 useless extension candidates. Maximal degree in co-relation 6008. Up to 1880 conditions per place. [2024-06-20 16:15:01,268 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 51 selfloop transitions, 11 changer transitions 0/68 dead transitions. [2024-06-20 16:15:01,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 68 transitions, 390 flow [2024-06-20 16:15:01,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:15:01,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:15:01,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-20 16:15:01,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2024-06-20 16:15:01,270 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 198 flow. Second operand 6 states and 122 transitions. [2024-06-20 16:15:01,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 68 transitions, 390 flow [2024-06-20 16:15:01,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 68 transitions, 370 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-20 16:15:01,275 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 232 flow [2024-06-20 16:15:01,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=232, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-06-20 16:15:01,278 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2024-06-20 16:15:01,278 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 232 flow [2024-06-20 16:15:01,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:01,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:01,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:01,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-20 16:15:01,282 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:15:01,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:01,283 INFO L85 PathProgramCache]: Analyzing trace with hash -579497411, now seen corresponding path program 2 times [2024-06-20 16:15:01,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:01,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247788658] [2024-06-20 16:15:01,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:01,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:01,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:01,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:01,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247788658] [2024-06-20 16:15:01,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247788658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:01,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:01,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:15:01,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113808518] [2024-06-20 16:15:01,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:01,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:15:01,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:01,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:15:01,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:15:02,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:15:02,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 232 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:02,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:02,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:15:02,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:02,410 INFO L124 PetriNetUnfolderBase]: 1288/2047 cut-off events. [2024-06-20 16:15:02,411 INFO L125 PetriNetUnfolderBase]: For 4533/4538 co-relation queries the response was YES. [2024-06-20 16:15:02,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6585 conditions, 2047 events. 1288/2047 cut-off events. For 4533/4538 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 10200 event pairs, 528 based on Foata normal form. 8/2045 useless extension candidates. Maximal degree in co-relation 6565. Up to 1862 conditions per place. [2024-06-20 16:15:02,422 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 47 selfloop transitions, 16 changer transitions 0/69 dead transitions. [2024-06-20 16:15:02,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 69 transitions, 428 flow [2024-06-20 16:15:02,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:15:02,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:15:02,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-20 16:15:02,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2024-06-20 16:15:02,423 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 232 flow. Second operand 6 states and 122 transitions. [2024-06-20 16:15:02,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 69 transitions, 428 flow [2024-06-20 16:15:02,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 69 transitions, 398 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-20 16:15:02,426 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 272 flow [2024-06-20 16:15:02,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-20 16:15:02,427 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-06-20 16:15:02,427 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 272 flow [2024-06-20 16:15:02,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:02,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:02,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:02,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-20 16:15:02,428 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:15:02,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:02,428 INFO L85 PathProgramCache]: Analyzing trace with hash 2096774213, now seen corresponding path program 1 times [2024-06-20 16:15:02,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:02,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23350423] [2024-06-20 16:15:02,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:02,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:03,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:03,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:03,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23350423] [2024-06-20 16:15:03,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23350423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:03,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:03,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:15:03,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936652900] [2024-06-20 16:15:03,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:03,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:15:03,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:03,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:15:03,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:15:03,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:15:03,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 272 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:03,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:03,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:15:03,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:03,767 INFO L124 PetriNetUnfolderBase]: 1379/2252 cut-off events. [2024-06-20 16:15:03,768 INFO L125 PetriNetUnfolderBase]: For 6193/6193 co-relation queries the response was YES. [2024-06-20 16:15:03,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7516 conditions, 2252 events. 1379/2252 cut-off events. For 6193/6193 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 11650 event pairs, 540 based on Foata normal form. 2/2242 useless extension candidates. Maximal degree in co-relation 7495. Up to 2030 conditions per place. [2024-06-20 16:15:03,781 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 57 selfloop transitions, 14 changer transitions 0/77 dead transitions. [2024-06-20 16:15:03,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 77 transitions, 499 flow [2024-06-20 16:15:03,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:15:03,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:15:03,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-20 16:15:03,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46258503401360546 [2024-06-20 16:15:03,782 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 272 flow. Second operand 7 states and 136 transitions. [2024-06-20 16:15:03,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 77 transitions, 499 flow [2024-06-20 16:15:03,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 77 transitions, 450 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-20 16:15:03,787 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 308 flow [2024-06-20 16:15:03,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=308, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-06-20 16:15:03,788 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2024-06-20 16:15:03,788 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 308 flow [2024-06-20 16:15:03,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:03,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:03,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:03,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-20 16:15:03,789 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:15:03,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:03,789 INFO L85 PathProgramCache]: Analyzing trace with hash -789311251, now seen corresponding path program 1 times [2024-06-20 16:15:03,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:03,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473595698] [2024-06-20 16:15:03,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:03,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:05,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:05,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:05,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473595698] [2024-06-20 16:15:05,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473595698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:05,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:05,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:15:05,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573860499] [2024-06-20 16:15:05,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:05,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:15:05,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:05,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:15:05,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:15:05,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:15:05,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 308 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:05,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:05,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:15:05,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:05,716 INFO L124 PetriNetUnfolderBase]: 1533/2428 cut-off events. [2024-06-20 16:15:05,717 INFO L125 PetriNetUnfolderBase]: For 9022/9022 co-relation queries the response was YES. [2024-06-20 16:15:05,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8918 conditions, 2428 events. 1533/2428 cut-off events. For 9022/9022 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 12444 event pairs, 577 based on Foata normal form. 2/2408 useless extension candidates. Maximal degree in co-relation 8895. Up to 2220 conditions per place. [2024-06-20 16:15:05,736 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 63 selfloop transitions, 21 changer transitions 0/91 dead transitions. [2024-06-20 16:15:05,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 615 flow [2024-06-20 16:15:05,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:15:05,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:15:05,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-20 16:15:05,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-20 16:15:05,740 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 308 flow. Second operand 8 states and 154 transitions. [2024-06-20 16:15:05,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 615 flow [2024-06-20 16:15:05,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 91 transitions, 575 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-20 16:15:05,745 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 426 flow [2024-06-20 16:15:05,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=426, PETRI_PLACES=68, PETRI_TRANSITIONS=70} [2024-06-20 16:15:05,747 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2024-06-20 16:15:05,747 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 426 flow [2024-06-20 16:15:05,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:05,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:05,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:05,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-20 16:15:05,748 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)] === [2024-06-20 16:15:05,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:05,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1249317493, now seen corresponding path program 2 times [2024-06-20 16:15:05,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:05,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169008365] [2024-06-20 16:15:05,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:05,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:06,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:06,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:06,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169008365] [2024-06-20 16:15:06,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169008365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:06,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:06,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:15:06,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822100964] [2024-06-20 16:15:06,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:06,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:15:06,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:06,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:15:06,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:15:06,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:15:06,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 70 transitions, 426 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:06,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:06,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:15:06,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:07,457 INFO L124 PetriNetUnfolderBase]: 1606/2541 cut-off events. [2024-06-20 16:15:07,458 INFO L125 PetriNetUnfolderBase]: For 12386/12390 co-relation queries the response was YES. [2024-06-20 16:15:07,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10175 conditions, 2541 events. 1606/2541 cut-off events. For 12386/12390 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 12947 event pairs, 551 based on Foata normal form. 8/2528 useless extension candidates. Maximal degree in co-relation 10148. Up to 2305 conditions per place. [2024-06-20 16:15:07,474 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 73 selfloop transitions, 32 changer transitions 0/112 dead transitions. [2024-06-20 16:15:07,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 112 transitions, 847 flow [2024-06-20 16:15:07,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:15:07,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:15:07,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-20 16:15:07,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-20 16:15:07,476 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 426 flow. Second operand 8 states and 162 transitions. [2024-06-20 16:15:07,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 112 transitions, 847 flow [2024-06-20 16:15:07,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 112 transitions, 769 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-06-20 16:15:07,511 INFO L231 Difference]: Finished difference. Result has 75 places, 83 transitions, 569 flow [2024-06-20 16:15:07,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=569, PETRI_PLACES=75, PETRI_TRANSITIONS=83} [2024-06-20 16:15:07,513 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 32 predicate places. [2024-06-20 16:15:07,513 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 83 transitions, 569 flow [2024-06-20 16:15:07,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:07,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:07,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:07,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-20 16:15:07,513 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)] === [2024-06-20 16:15:07,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:07,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1577235183, now seen corresponding path program 3 times [2024-06-20 16:15:07,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:07,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571665548] [2024-06-20 16:15:07,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:07,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:08,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:08,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:08,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571665548] [2024-06-20 16:15:08,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571665548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:08,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:08,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:15:08,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996663144] [2024-06-20 16:15:08,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:08,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:15:08,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:08,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:15:08,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:15:08,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:15:08,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 83 transitions, 569 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:08,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:08,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:15:08,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:09,167 INFO L124 PetriNetUnfolderBase]: 1636/2597 cut-off events. [2024-06-20 16:15:09,167 INFO L125 PetriNetUnfolderBase]: For 15601/15603 co-relation queries the response was YES. [2024-06-20 16:15:09,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10996 conditions, 2597 events. 1636/2597 cut-off events. For 15601/15603 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 13284 event pairs, 539 based on Foata normal form. 4/2582 useless extension candidates. Maximal degree in co-relation 10966. Up to 2346 conditions per place. [2024-06-20 16:15:09,181 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 76 selfloop transitions, 45 changer transitions 0/128 dead transitions. [2024-06-20 16:15:09,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 128 transitions, 1088 flow [2024-06-20 16:15:09,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:15:09,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:15:09,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-20 16:15:09,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-20 16:15:09,182 INFO L175 Difference]: Start difference. First operand has 75 places, 83 transitions, 569 flow. Second operand 8 states and 161 transitions. [2024-06-20 16:15:09,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 128 transitions, 1088 flow [2024-06-20 16:15:09,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 128 transitions, 992 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-20 16:15:09,190 INFO L231 Difference]: Finished difference. Result has 80 places, 104 transitions, 837 flow [2024-06-20 16:15:09,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=837, PETRI_PLACES=80, PETRI_TRANSITIONS=104} [2024-06-20 16:15:09,191 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 37 predicate places. [2024-06-20 16:15:09,191 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 104 transitions, 837 flow [2024-06-20 16:15:09,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:09,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:09,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:09,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-20 16:15:09,191 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:15:09,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:09,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1435556139, now seen corresponding path program 1 times [2024-06-20 16:15:09,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:09,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605734288] [2024-06-20 16:15:09,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:09,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:10,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:10,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:10,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605734288] [2024-06-20 16:15:10,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605734288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:10,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:10,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:15:10,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721930001] [2024-06-20 16:15:10,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:10,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:15:10,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:10,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:15:10,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:15:10,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:15:10,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 104 transitions, 837 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:10,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:10,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:15:10,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:10,830 INFO L124 PetriNetUnfolderBase]: 1522/2467 cut-off events. [2024-06-20 16:15:10,830 INFO L125 PetriNetUnfolderBase]: For 16388/16388 co-relation queries the response was YES. [2024-06-20 16:15:10,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10621 conditions, 2467 events. 1522/2467 cut-off events. For 16388/16388 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 12612 event pairs, 537 based on Foata normal form. 4/2455 useless extension candidates. Maximal degree in co-relation 10588. Up to 2220 conditions per place. [2024-06-20 16:15:10,841 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 106 selfloop transitions, 17 changer transitions 0/129 dead transitions. [2024-06-20 16:15:10,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 129 transitions, 1191 flow [2024-06-20 16:15:10,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:15:10,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:15:10,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-20 16:15:10,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-20 16:15:10,842 INFO L175 Difference]: Start difference. First operand has 80 places, 104 transitions, 837 flow. Second operand 8 states and 154 transitions. [2024-06-20 16:15:10,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 129 transitions, 1191 flow [2024-06-20 16:15:10,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 129 transitions, 1115 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-20 16:15:10,851 INFO L231 Difference]: Finished difference. Result has 85 places, 106 transitions, 836 flow [2024-06-20 16:15:10,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=836, PETRI_PLACES=85, PETRI_TRANSITIONS=106} [2024-06-20 16:15:10,852 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2024-06-20 16:15:10,852 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 106 transitions, 836 flow [2024-06-20 16:15:10,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:10,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:10,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:10,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-20 16:15:10,852 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:15:10,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:10,852 INFO L85 PathProgramCache]: Analyzing trace with hash 850076573, now seen corresponding path program 1 times [2024-06-20 16:15:10,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:10,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447961989] [2024-06-20 16:15:10,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:10,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:11,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:11,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:11,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447961989] [2024-06-20 16:15:11,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447961989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:11,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:11,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 16:15:11,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849947084] [2024-06-20 16:15:11,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:11,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 16:15:11,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:11,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 16:15:11,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-20 16:15:11,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:15:11,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 106 transitions, 836 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 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) [2024-06-20 16:15:11,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:11,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:15:11,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:12,000 INFO L124 PetriNetUnfolderBase]: 1519/2463 cut-off events. [2024-06-20 16:15:12,001 INFO L125 PetriNetUnfolderBase]: For 17769/17769 co-relation queries the response was YES. [2024-06-20 16:15:12,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10764 conditions, 2463 events. 1519/2463 cut-off events. For 17769/17769 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 12519 event pairs, 551 based on Foata normal form. 1/2448 useless extension candidates. Maximal degree in co-relation 10730. Up to 2258 conditions per place. [2024-06-20 16:15:12,014 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 101 selfloop transitions, 9 changer transitions 0/116 dead transitions. [2024-06-20 16:15:12,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 116 transitions, 1098 flow [2024-06-20 16:15:12,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 16:15:12,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 16:15:12,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2024-06-20 16:15:12,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-20 16:15:12,015 INFO L175 Difference]: Start difference. First operand has 85 places, 106 transitions, 836 flow. Second operand 5 states and 96 transitions. [2024-06-20 16:15:12,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 116 transitions, 1098 flow [2024-06-20 16:15:12,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 116 transitions, 1041 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-20 16:15:12,025 INFO L231 Difference]: Finished difference. Result has 84 places, 109 transitions, 829 flow [2024-06-20 16:15:12,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=829, PETRI_PLACES=84, PETRI_TRANSITIONS=109} [2024-06-20 16:15:12,025 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 41 predicate places. [2024-06-20 16:15:12,026 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 109 transitions, 829 flow [2024-06-20 16:15:12,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 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) [2024-06-20 16:15:12,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:12,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:12,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-20 16:15:12,026 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)] === [2024-06-20 16:15:12,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:12,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1304880954, now seen corresponding path program 1 times [2024-06-20 16:15:12,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:12,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225579237] [2024-06-20 16:15:12,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:12,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:12,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:12,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:12,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225579237] [2024-06-20 16:15:12,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225579237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:12,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:12,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:15:12,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305166251] [2024-06-20 16:15:12,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:12,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:15:12,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:12,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:15:12,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:15:13,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:15:13,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 109 transitions, 829 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) [2024-06-20 16:15:13,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:13,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:15:13,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:13,554 INFO L124 PetriNetUnfolderBase]: 1737/2702 cut-off events. [2024-06-20 16:15:13,554 INFO L125 PetriNetUnfolderBase]: For 23069/23071 co-relation queries the response was YES. [2024-06-20 16:15:13,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12422 conditions, 2702 events. 1737/2702 cut-off events. For 23069/23071 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 13162 event pairs, 582 based on Foata normal form. 4/2704 useless extension candidates. Maximal degree in co-relation 12387. Up to 2517 conditions per place. [2024-06-20 16:15:13,570 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 112 selfloop transitions, 25 changer transitions 0/142 dead transitions. [2024-06-20 16:15:13,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 142 transitions, 1243 flow [2024-06-20 16:15:13,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:15:13,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:15:13,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-20 16:15:13,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-20 16:15:13,572 INFO L175 Difference]: Start difference. First operand has 84 places, 109 transitions, 829 flow. Second operand 8 states and 150 transitions. [2024-06-20 16:15:13,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 142 transitions, 1243 flow [2024-06-20 16:15:13,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 142 transitions, 1215 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-20 16:15:13,584 INFO L231 Difference]: Finished difference. Result has 91 places, 118 transitions, 939 flow [2024-06-20 16:15:13,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=939, PETRI_PLACES=91, PETRI_TRANSITIONS=118} [2024-06-20 16:15:13,585 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2024-06-20 16:15:13,585 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 118 transitions, 939 flow [2024-06-20 16:15:13,586 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) [2024-06-20 16:15:13,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:13,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:13,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-20 16:15:13,586 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:15:13,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:13,587 INFO L85 PathProgramCache]: Analyzing trace with hash 492930010, now seen corresponding path program 2 times [2024-06-20 16:15:13,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:13,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796804537] [2024-06-20 16:15:13,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:13,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:14,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:14,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:14,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796804537] [2024-06-20 16:15:14,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796804537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:14,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:14,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:15:14,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776610904] [2024-06-20 16:15:14,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:14,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:15:14,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:14,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:15:14,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:15:14,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:15:14,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 118 transitions, 939 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) [2024-06-20 16:15:14,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:14,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:15:14,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:15,023 INFO L124 PetriNetUnfolderBase]: 1748/2718 cut-off events. [2024-06-20 16:15:15,023 INFO L125 PetriNetUnfolderBase]: For 26868/26872 co-relation queries the response was YES. [2024-06-20 16:15:15,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13268 conditions, 2718 events. 1748/2718 cut-off events. For 26868/26872 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 13249 event pairs, 587 based on Foata normal form. 6/2721 useless extension candidates. Maximal degree in co-relation 13230. Up to 2463 conditions per place. [2024-06-20 16:15:15,040 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 107 selfloop transitions, 42 changer transitions 0/154 dead transitions. [2024-06-20 16:15:15,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 154 transitions, 1477 flow [2024-06-20 16:15:15,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:15:15,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:15:15,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-20 16:15:15,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-20 16:15:15,042 INFO L175 Difference]: Start difference. First operand has 91 places, 118 transitions, 939 flow. Second operand 8 states and 153 transitions. [2024-06-20 16:15:15,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 154 transitions, 1477 flow [2024-06-20 16:15:15,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 154 transitions, 1402 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-20 16:15:15,057 INFO L231 Difference]: Finished difference. Result has 97 places, 130 transitions, 1101 flow [2024-06-20 16:15:15,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1101, PETRI_PLACES=97, PETRI_TRANSITIONS=130} [2024-06-20 16:15:15,058 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 54 predicate places. [2024-06-20 16:15:15,058 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 130 transitions, 1101 flow [2024-06-20 16:15:15,058 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) [2024-06-20 16:15:15,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:15,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:15,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-20 16:15:15,059 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:15:15,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:15,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1552291704, now seen corresponding path program 3 times [2024-06-20 16:15:15,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:15,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705966574] [2024-06-20 16:15:15,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:15,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:15,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:15,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:15,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705966574] [2024-06-20 16:15:15,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705966574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:15,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:15,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:15:15,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145030607] [2024-06-20 16:15:15,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:15,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:15:15,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:15,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:15:15,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:15:16,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:15:16,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 130 transitions, 1101 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) [2024-06-20 16:15:16,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:16,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:15:16,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:16,598 INFO L124 PetriNetUnfolderBase]: 1770/2745 cut-off events. [2024-06-20 16:15:16,598 INFO L125 PetriNetUnfolderBase]: For 30899/30903 co-relation queries the response was YES. [2024-06-20 16:15:16,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14058 conditions, 2745 events. 1770/2745 cut-off events. For 30899/30903 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 13309 event pairs, 587 based on Foata normal form. 6/2748 useless extension candidates. Maximal degree in co-relation 14017. Up to 2520 conditions per place. [2024-06-20 16:15:16,614 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 116 selfloop transitions, 37 changer transitions 0/158 dead transitions. [2024-06-20 16:15:16,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 158 transitions, 1548 flow [2024-06-20 16:15:16,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:15:16,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:15:16,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-20 16:15:16,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-20 16:15:16,617 INFO L175 Difference]: Start difference. First operand has 97 places, 130 transitions, 1101 flow. Second operand 8 states and 150 transitions. [2024-06-20 16:15:16,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 158 transitions, 1548 flow [2024-06-20 16:15:16,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 158 transitions, 1497 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-20 16:15:16,638 INFO L231 Difference]: Finished difference. Result has 103 places, 136 transitions, 1203 flow [2024-06-20 16:15:16,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1203, PETRI_PLACES=103, PETRI_TRANSITIONS=136} [2024-06-20 16:15:16,639 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 60 predicate places. [2024-06-20 16:15:16,640 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 136 transitions, 1203 flow [2024-06-20 16:15:16,640 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) [2024-06-20 16:15:16,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:16,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:16,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-20 16:15:16,640 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:15:16,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:16,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1544940054, now seen corresponding path program 4 times [2024-06-20 16:15:16,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:16,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282845543] [2024-06-20 16:15:16,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:16,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:17,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:17,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:17,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282845543] [2024-06-20 16:15:17,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282845543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:17,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:17,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:15:17,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619148091] [2024-06-20 16:15:17,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:17,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:15:17,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:17,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:15:17,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:15:17,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:15:17,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 136 transitions, 1203 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) [2024-06-20 16:15:17,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:17,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:15:17,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:18,173 INFO L124 PetriNetUnfolderBase]: 1765/2743 cut-off events. [2024-06-20 16:15:18,174 INFO L125 PetriNetUnfolderBase]: For 32924/32928 co-relation queries the response was YES. [2024-06-20 16:15:18,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14046 conditions, 2743 events. 1765/2743 cut-off events. For 32924/32928 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 13372 event pairs, 587 based on Foata normal form. 6/2746 useless extension candidates. Maximal degree in co-relation 14003. Up to 2513 conditions per place. [2024-06-20 16:15:18,191 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 117 selfloop transitions, 36 changer transitions 0/158 dead transitions. [2024-06-20 16:15:18,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 158 transitions, 1585 flow [2024-06-20 16:15:18,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:15:18,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:15:18,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-20 16:15:18,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494047619047619 [2024-06-20 16:15:18,193 INFO L175 Difference]: Start difference. First operand has 103 places, 136 transitions, 1203 flow. Second operand 8 states and 151 transitions. [2024-06-20 16:15:18,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 158 transitions, 1585 flow [2024-06-20 16:15:18,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 158 transitions, 1461 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-20 16:15:18,217 INFO L231 Difference]: Finished difference. Result has 106 places, 136 transitions, 1159 flow [2024-06-20 16:15:18,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1159, PETRI_PLACES=106, PETRI_TRANSITIONS=136} [2024-06-20 16:15:18,218 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 63 predicate places. [2024-06-20 16:15:18,218 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 136 transitions, 1159 flow [2024-06-20 16:15:18,218 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) [2024-06-20 16:15:18,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:18,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:18,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-20 16:15:18,219 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:15:18,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:18,219 INFO L85 PathProgramCache]: Analyzing trace with hash 582571835, now seen corresponding path program 1 times [2024-06-20 16:15:18,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:18,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988900308] [2024-06-20 16:15:18,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:18,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:18,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:18,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:18,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988900308] [2024-06-20 16:15:18,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988900308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:18,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:18,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:15:18,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195137568] [2024-06-20 16:15:18,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:18,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:15:18,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:18,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:15:18,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:15:18,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:15:18,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 136 transitions, 1159 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) [2024-06-20 16:15:18,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:18,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:15:18,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:19,375 INFO L124 PetriNetUnfolderBase]: 1762/2750 cut-off events. [2024-06-20 16:15:19,375 INFO L125 PetriNetUnfolderBase]: For 35588/35588 co-relation queries the response was YES. [2024-06-20 16:15:19,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14177 conditions, 2750 events. 1762/2750 cut-off events. For 35588/35588 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 13480 event pairs, 599 based on Foata normal form. 1/2749 useless extension candidates. Maximal degree in co-relation 14133. Up to 2605 conditions per place. [2024-06-20 16:15:19,391 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 130 selfloop transitions, 12 changer transitions 0/147 dead transitions. [2024-06-20 16:15:19,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 147 transitions, 1491 flow [2024-06-20 16:15:19,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:15:19,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:15:19,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-20 16:15:19,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2024-06-20 16:15:19,393 INFO L175 Difference]: Start difference. First operand has 106 places, 136 transitions, 1159 flow. Second operand 6 states and 106 transitions. [2024-06-20 16:15:19,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 147 transitions, 1491 flow [2024-06-20 16:15:19,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 147 transitions, 1373 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-20 16:15:19,413 INFO L231 Difference]: Finished difference. Result has 104 places, 139 transitions, 1101 flow [2024-06-20 16:15:19,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1101, PETRI_PLACES=104, PETRI_TRANSITIONS=139} [2024-06-20 16:15:19,414 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 61 predicate places. [2024-06-20 16:15:19,414 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 139 transitions, 1101 flow [2024-06-20 16:15:19,414 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) [2024-06-20 16:15:19,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:19,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:19,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-20 16:15:19,415 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)] === [2024-06-20 16:15:19,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:19,415 INFO L85 PathProgramCache]: Analyzing trace with hash 2108327824, now seen corresponding path program 1 times [2024-06-20 16:15:19,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:19,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922133602] [2024-06-20 16:15:19,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:19,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:20,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:20,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:20,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922133602] [2024-06-20 16:15:20,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922133602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:20,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:20,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:15:20,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365303288] [2024-06-20 16:15:20,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:20,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:15:20,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:20,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:15:20,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:15:20,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:15:20,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 139 transitions, 1101 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:20,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:20,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:15:20,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:21,213 INFO L124 PetriNetUnfolderBase]: 1708/2707 cut-off events. [2024-06-20 16:15:21,213 INFO L125 PetriNetUnfolderBase]: For 45346/45348 co-relation queries the response was YES. [2024-06-20 16:15:21,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14974 conditions, 2707 events. 1708/2707 cut-off events. For 45346/45348 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 13918 event pairs, 506 based on Foata normal form. 6/2711 useless extension candidates. Maximal degree in co-relation 14931. Up to 2360 conditions per place. [2024-06-20 16:15:21,228 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 108 selfloop transitions, 53 changer transitions 0/171 dead transitions. [2024-06-20 16:15:21,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 171 transitions, 1591 flow [2024-06-20 16:15:21,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:15:21,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:15:21,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-20 16:15:21,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-20 16:15:21,229 INFO L175 Difference]: Start difference. First operand has 104 places, 139 transitions, 1101 flow. Second operand 8 states and 160 transitions. [2024-06-20 16:15:21,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 171 transitions, 1591 flow [2024-06-20 16:15:21,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 171 transitions, 1553 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-20 16:15:21,246 INFO L231 Difference]: Finished difference. Result has 109 places, 144 transitions, 1289 flow [2024-06-20 16:15:21,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1289, PETRI_PLACES=109, PETRI_TRANSITIONS=144} [2024-06-20 16:15:21,247 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 66 predicate places. [2024-06-20 16:15:21,247 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 144 transitions, 1289 flow [2024-06-20 16:15:21,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:21,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:21,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:21,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-20 16:15:21,248 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)] === [2024-06-20 16:15:21,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:21,248 INFO L85 PathProgramCache]: Analyzing trace with hash 574589312, now seen corresponding path program 2 times [2024-06-20 16:15:21,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:21,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634236684] [2024-06-20 16:15:21,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:21,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:22,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:22,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:22,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634236684] [2024-06-20 16:15:22,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634236684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:22,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:22,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:15:22,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409871280] [2024-06-20 16:15:22,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:22,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:15:22,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:22,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:15:22,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:15:22,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:15:22,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 144 transitions, 1289 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:22,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:22,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:15:22,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:22,882 INFO L124 PetriNetUnfolderBase]: 1750/2760 cut-off events. [2024-06-20 16:15:22,882 INFO L125 PetriNetUnfolderBase]: For 52503/52505 co-relation queries the response was YES. [2024-06-20 16:15:22,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16106 conditions, 2760 events. 1750/2760 cut-off events. For 52503/52505 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 14190 event pairs, 411 based on Foata normal form. 6/2755 useless extension candidates. Maximal degree in co-relation 16061. Up to 2431 conditions per place. [2024-06-20 16:15:22,899 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 125 selfloop transitions, 39 changer transitions 0/174 dead transitions. [2024-06-20 16:15:22,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 174 transitions, 1753 flow [2024-06-20 16:15:22,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:15:22,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:15:22,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-20 16:15:22,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-20 16:15:22,901 INFO L175 Difference]: Start difference. First operand has 109 places, 144 transitions, 1289 flow. Second operand 8 states and 160 transitions. [2024-06-20 16:15:22,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 174 transitions, 1753 flow [2024-06-20 16:15:22,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 174 transitions, 1659 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-20 16:15:22,929 INFO L231 Difference]: Finished difference. Result has 113 places, 146 transitions, 1328 flow [2024-06-20 16:15:22,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1328, PETRI_PLACES=113, PETRI_TRANSITIONS=146} [2024-06-20 16:15:22,930 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 70 predicate places. [2024-06-20 16:15:22,930 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 146 transitions, 1328 flow [2024-06-20 16:15:22,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:22,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:22,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:22,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-20 16:15:22,930 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)] === [2024-06-20 16:15:22,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:22,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2071348302, now seen corresponding path program 3 times [2024-06-20 16:15:22,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:22,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316257294] [2024-06-20 16:15:22,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:22,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:23,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:23,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:23,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316257294] [2024-06-20 16:15:23,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316257294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:23,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:23,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:15:23,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169912033] [2024-06-20 16:15:23,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:23,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:15:23,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:23,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:15:23,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:15:24,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:15:24,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 146 transitions, 1328 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:24,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:24,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:15:24,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:24,598 INFO L124 PetriNetUnfolderBase]: 1753/2780 cut-off events. [2024-06-20 16:15:24,599 INFO L125 PetriNetUnfolderBase]: For 58873/58875 co-relation queries the response was YES. [2024-06-20 16:15:24,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16646 conditions, 2780 events. 1753/2780 cut-off events. For 58873/58875 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 14327 event pairs, 526 based on Foata normal form. 6/2783 useless extension candidates. Maximal degree in co-relation 16599. Up to 2509 conditions per place. [2024-06-20 16:15:24,616 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 137 selfloop transitions, 26 changer transitions 0/173 dead transitions. [2024-06-20 16:15:24,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 173 transitions, 1786 flow [2024-06-20 16:15:24,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:15:24,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:15:24,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-20 16:15:24,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-20 16:15:24,618 INFO L175 Difference]: Start difference. First operand has 113 places, 146 transitions, 1328 flow. Second operand 8 states and 157 transitions. [2024-06-20 16:15:24,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 173 transitions, 1786 flow [2024-06-20 16:15:24,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 173 transitions, 1661 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-20 16:15:24,647 INFO L231 Difference]: Finished difference. Result has 115 places, 148 transitions, 1314 flow [2024-06-20 16:15:24,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1203, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1314, PETRI_PLACES=115, PETRI_TRANSITIONS=148} [2024-06-20 16:15:24,647 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 72 predicate places. [2024-06-20 16:15:24,647 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 148 transitions, 1314 flow [2024-06-20 16:15:24,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:24,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:24,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:24,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-20 16:15:24,648 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)] === [2024-06-20 16:15:24,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:24,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1681134156, now seen corresponding path program 1 times [2024-06-20 16:15:24,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:24,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680291556] [2024-06-20 16:15:24,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:24,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:25,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:25,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:25,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680291556] [2024-06-20 16:15:25,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680291556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:25,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:25,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:15:25,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344102659] [2024-06-20 16:15:25,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:25,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:15:25,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:25,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:15:25,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:15:25,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:15:25,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 148 transitions, 1314 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) [2024-06-20 16:15:25,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:25,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:15:25,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:26,510 INFO L124 PetriNetUnfolderBase]: 1938/2993 cut-off events. [2024-06-20 16:15:26,510 INFO L125 PetriNetUnfolderBase]: For 63233/63235 co-relation queries the response was YES. [2024-06-20 16:15:26,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17527 conditions, 2993 events. 1938/2993 cut-off events. For 63233/63235 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 14822 event pairs, 520 based on Foata normal form. 4/2995 useless extension candidates. Maximal degree in co-relation 17479. Up to 2675 conditions per place. [2024-06-20 16:15:26,530 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 118 selfloop transitions, 70 changer transitions 0/194 dead transitions. [2024-06-20 16:15:26,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 194 transitions, 1988 flow [2024-06-20 16:15:26,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:15:26,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:15:26,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-20 16:15:26,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-20 16:15:26,532 INFO L175 Difference]: Start difference. First operand has 115 places, 148 transitions, 1314 flow. Second operand 9 states and 170 transitions. [2024-06-20 16:15:26,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 194 transitions, 1988 flow [2024-06-20 16:15:26,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 194 transitions, 1883 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-20 16:15:26,563 INFO L231 Difference]: Finished difference. Result has 118 places, 164 transitions, 1586 flow [2024-06-20 16:15:26,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1209, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1586, PETRI_PLACES=118, PETRI_TRANSITIONS=164} [2024-06-20 16:15:26,563 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 75 predicate places. [2024-06-20 16:15:26,563 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 164 transitions, 1586 flow [2024-06-20 16:15:26,564 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) [2024-06-20 16:15:26,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:26,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:26,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-20 16:15:26,564 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:15:26,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:26,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1796425326, now seen corresponding path program 2 times [2024-06-20 16:15:26,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:26,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095473071] [2024-06-20 16:15:26,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:26,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:27,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:27,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:27,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095473071] [2024-06-20 16:15:27,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095473071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:27,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:27,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:15:27,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246647516] [2024-06-20 16:15:27,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:27,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:15:27,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:27,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:15:27,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:15:27,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:15:27,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 164 transitions, 1586 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) [2024-06-20 16:15:27,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:27,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:15:27,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:28,615 INFO L124 PetriNetUnfolderBase]: 1960/3036 cut-off events. [2024-06-20 16:15:28,616 INFO L125 PetriNetUnfolderBase]: For 69332/69334 co-relation queries the response was YES. [2024-06-20 16:15:28,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18422 conditions, 3036 events. 1960/3036 cut-off events. For 69332/69334 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 15144 event pairs, 529 based on Foata normal form. 4/3038 useless extension candidates. Maximal degree in co-relation 18373. Up to 2801 conditions per place. [2024-06-20 16:15:28,637 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 162 selfloop transitions, 31 changer transitions 0/199 dead transitions. [2024-06-20 16:15:28,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 199 transitions, 2152 flow [2024-06-20 16:15:28,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:15:28,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:15:28,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-20 16:15:28,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-20 16:15:28,639 INFO L175 Difference]: Start difference. First operand has 118 places, 164 transitions, 1586 flow. Second operand 9 states and 169 transitions. [2024-06-20 16:15:28,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 199 transitions, 2152 flow [2024-06-20 16:15:28,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 199 transitions, 1911 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-20 16:15:28,676 INFO L231 Difference]: Finished difference. Result has 120 places, 171 transitions, 1513 flow [2024-06-20 16:15:28,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1345, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1513, PETRI_PLACES=120, PETRI_TRANSITIONS=171} [2024-06-20 16:15:28,676 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 77 predicate places. [2024-06-20 16:15:28,676 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 171 transitions, 1513 flow [2024-06-20 16:15:28,676 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) [2024-06-20 16:15:28,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:28,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:28,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-20 16:15:28,677 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)] === [2024-06-20 16:15:28,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:28,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1796604816, now seen corresponding path program 3 times [2024-06-20 16:15:28,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:28,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725856448] [2024-06-20 16:15:28,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:28,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:29,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:29,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:29,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725856448] [2024-06-20 16:15:29,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725856448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:29,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:29,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:15:29,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120396822] [2024-06-20 16:15:29,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:29,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:15:29,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:29,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:15:29,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:15:29,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:15:29,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 171 transitions, 1513 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) [2024-06-20 16:15:29,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:29,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:15:29,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:30,618 INFO L124 PetriNetUnfolderBase]: 1987/3076 cut-off events. [2024-06-20 16:15:30,619 INFO L125 PetriNetUnfolderBase]: For 77087/77087 co-relation queries the response was YES. [2024-06-20 16:15:30,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19024 conditions, 3076 events. 1987/3076 cut-off events. For 77087/77087 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 15368 event pairs, 475 based on Foata normal form. 2/3076 useless extension candidates. Maximal degree in co-relation 18975. Up to 2655 conditions per place. [2024-06-20 16:15:30,637 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 112 selfloop transitions, 91 changer transitions 0/209 dead transitions. [2024-06-20 16:15:30,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 209 transitions, 2259 flow [2024-06-20 16:15:30,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:15:30,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:15:30,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-20 16:15:30,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576719576719577 [2024-06-20 16:15:30,639 INFO L175 Difference]: Start difference. First operand has 120 places, 171 transitions, 1513 flow. Second operand 9 states and 173 transitions. [2024-06-20 16:15:30,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 209 transitions, 2259 flow [2024-06-20 16:15:30,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 209 transitions, 2137 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-20 16:15:30,672 INFO L231 Difference]: Finished difference. Result has 123 places, 179 transitions, 1743 flow [2024-06-20 16:15:30,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1743, PETRI_PLACES=123, PETRI_TRANSITIONS=179} [2024-06-20 16:15:30,672 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 80 predicate places. [2024-06-20 16:15:30,672 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 179 transitions, 1743 flow [2024-06-20 16:15:30,673 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) [2024-06-20 16:15:30,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:30,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:30,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-20 16:15:30,673 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)] === [2024-06-20 16:15:30,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:30,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1796605064, now seen corresponding path program 1 times [2024-06-20 16:15:30,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:30,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423244184] [2024-06-20 16:15:30,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:30,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:31,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:31,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:31,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423244184] [2024-06-20 16:15:31,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423244184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:31,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:31,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:15:31,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298440599] [2024-06-20 16:15:31,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:31,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:15:31,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:31,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:15:31,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:15:31,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:15:31,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 179 transitions, 1743 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) [2024-06-20 16:15:31,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:31,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:15:31,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:32,558 INFO L124 PetriNetUnfolderBase]: 2074/3225 cut-off events. [2024-06-20 16:15:32,558 INFO L125 PetriNetUnfolderBase]: For 92375/92377 co-relation queries the response was YES. [2024-06-20 16:15:32,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20507 conditions, 3225 events. 2074/3225 cut-off events. For 92375/92377 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 16396 event pairs, 499 based on Foata normal form. 24/3247 useless extension candidates. Maximal degree in co-relation 20457. Up to 2814 conditions per place. [2024-06-20 16:15:32,579 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 168 selfloop transitions, 41 changer transitions 0/215 dead transitions. [2024-06-20 16:15:32,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 215 transitions, 2349 flow [2024-06-20 16:15:32,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:15:32,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:15:32,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-20 16:15:32,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656084656084656 [2024-06-20 16:15:32,581 INFO L175 Difference]: Start difference. First operand has 123 places, 179 transitions, 1743 flow. Second operand 9 states and 176 transitions. [2024-06-20 16:15:32,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 215 transitions, 2349 flow [2024-06-20 16:15:32,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 215 transitions, 2213 flow, removed 51 selfloop flow, removed 3 redundant places. [2024-06-20 16:15:32,642 INFO L231 Difference]: Finished difference. Result has 130 places, 182 transitions, 1773 flow [2024-06-20 16:15:32,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1607, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1773, PETRI_PLACES=130, PETRI_TRANSITIONS=182} [2024-06-20 16:15:32,643 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 87 predicate places. [2024-06-20 16:15:32,643 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 182 transitions, 1773 flow [2024-06-20 16:15:32,643 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) [2024-06-20 16:15:32,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:32,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:32,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-20 16:15:32,643 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:15:32,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:32,644 INFO L85 PathProgramCache]: Analyzing trace with hash 998414236, now seen corresponding path program 1 times [2024-06-20 16:15:32,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:32,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278672833] [2024-06-20 16:15:32,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:32,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:33,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:33,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:33,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278672833] [2024-06-20 16:15:33,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278672833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:33,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:33,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:15:33,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379482717] [2024-06-20 16:15:33,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:33,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:15:33,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:33,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:15:33,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:15:33,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:15:33,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 182 transitions, 1773 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) [2024-06-20 16:15:33,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:33,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:15:33,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:33,932 INFO L124 PetriNetUnfolderBase]: 2112/3265 cut-off events. [2024-06-20 16:15:33,932 INFO L125 PetriNetUnfolderBase]: For 98004/98004 co-relation queries the response was YES. [2024-06-20 16:15:33,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21484 conditions, 3265 events. 2112/3265 cut-off events. For 98004/98004 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 16383 event pairs, 493 based on Foata normal form. 2/3265 useless extension candidates. Maximal degree in co-relation 21431. Up to 3015 conditions per place. [2024-06-20 16:15:33,955 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 159 selfloop transitions, 39 changer transitions 0/204 dead transitions. [2024-06-20 16:15:33,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 204 transitions, 2347 flow [2024-06-20 16:15:33,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:15:33,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:15:33,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-06-20 16:15:33,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-20 16:15:33,957 INFO L175 Difference]: Start difference. First operand has 130 places, 182 transitions, 1773 flow. Second operand 6 states and 117 transitions. [2024-06-20 16:15:33,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 204 transitions, 2347 flow [2024-06-20 16:15:34,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 204 transitions, 2205 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-20 16:15:34,020 INFO L231 Difference]: Finished difference. Result has 129 places, 188 transitions, 1801 flow [2024-06-20 16:15:34,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1801, PETRI_PLACES=129, PETRI_TRANSITIONS=188} [2024-06-20 16:15:34,021 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 86 predicate places. [2024-06-20 16:15:34,021 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 188 transitions, 1801 flow [2024-06-20 16:15:34,021 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) [2024-06-20 16:15:34,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:34,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:34,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-20 16:15:34,021 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:15:34,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:34,022 INFO L85 PathProgramCache]: Analyzing trace with hash 648317874, now seen corresponding path program 4 times [2024-06-20 16:15:34,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:34,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669016669] [2024-06-20 16:15:34,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:34,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:34,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:34,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:34,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669016669] [2024-06-20 16:15:34,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669016669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:34,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:34,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:15:34,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653248890] [2024-06-20 16:15:34,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:34,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:15:34,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:34,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:15:34,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:15:35,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:15:35,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 188 transitions, 1801 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:35,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:35,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:15:35,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:35,643 INFO L124 PetriNetUnfolderBase]: 1924/3064 cut-off events. [2024-06-20 16:15:35,643 INFO L125 PetriNetUnfolderBase]: For 102747/102751 co-relation queries the response was YES. [2024-06-20 16:15:35,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20610 conditions, 3064 events. 1924/3064 cut-off events. For 102747/102751 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 16064 event pairs, 488 based on Foata normal form. 12/3065 useless extension candidates. Maximal degree in co-relation 20556. Up to 2692 conditions per place. [2024-06-20 16:15:35,668 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 158 selfloop transitions, 43 changer transitions 0/213 dead transitions. [2024-06-20 16:15:35,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 213 transitions, 2341 flow [2024-06-20 16:15:35,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:15:35,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:15:35,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-20 16:15:35,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-20 16:15:35,669 INFO L175 Difference]: Start difference. First operand has 129 places, 188 transitions, 1801 flow. Second operand 8 states and 157 transitions. [2024-06-20 16:15:35,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 213 transitions, 2341 flow [2024-06-20 16:15:35,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 213 transitions, 2302 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-20 16:15:35,737 INFO L231 Difference]: Finished difference. Result has 135 places, 190 transitions, 1919 flow [2024-06-20 16:15:35,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1762, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1919, PETRI_PLACES=135, PETRI_TRANSITIONS=190} [2024-06-20 16:15:35,737 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 92 predicate places. [2024-06-20 16:15:35,738 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 190 transitions, 1919 flow [2024-06-20 16:15:35,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:35,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:35,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:35,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-20 16:15:35,738 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:15:35,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:35,739 INFO L85 PathProgramCache]: Analyzing trace with hash 884677932, now seen corresponding path program 2 times [2024-06-20 16:15:35,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:35,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202634067] [2024-06-20 16:15:35,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:35,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:36,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:36,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:36,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202634067] [2024-06-20 16:15:36,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202634067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:36,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:36,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:15:36,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258158900] [2024-06-20 16:15:36,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:36,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:15:36,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:36,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:15:36,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:15:36,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:15:36,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 190 transitions, 1919 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) [2024-06-20 16:15:36,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:36,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:15:36,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:37,588 INFO L124 PetriNetUnfolderBase]: 2226/3458 cut-off events. [2024-06-20 16:15:37,589 INFO L125 PetriNetUnfolderBase]: For 121782/121786 co-relation queries the response was YES. [2024-06-20 16:15:37,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23619 conditions, 3458 events. 2226/3458 cut-off events. For 121782/121786 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 17756 event pairs, 521 based on Foata normal form. 26/3481 useless extension candidates. Maximal degree in co-relation 23563. Up to 2916 conditions per place. [2024-06-20 16:15:37,615 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 159 selfloop transitions, 77 changer transitions 0/242 dead transitions. [2024-06-20 16:15:37,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 242 transitions, 2969 flow [2024-06-20 16:15:37,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:15:37,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:15:37,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-20 16:15:37,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-06-20 16:15:37,617 INFO L175 Difference]: Start difference. First operand has 135 places, 190 transitions, 1919 flow. Second operand 10 states and 198 transitions. [2024-06-20 16:15:37,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 242 transitions, 2969 flow [2024-06-20 16:15:37,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 242 transitions, 2736 flow, removed 61 selfloop flow, removed 7 redundant places. [2024-06-20 16:15:37,688 INFO L231 Difference]: Finished difference. Result has 141 places, 205 transitions, 2246 flow [2024-06-20 16:15:37,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1758, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2246, PETRI_PLACES=141, PETRI_TRANSITIONS=205} [2024-06-20 16:15:37,689 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 98 predicate places. [2024-06-20 16:15:37,689 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 205 transitions, 2246 flow [2024-06-20 16:15:37,689 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) [2024-06-20 16:15:37,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:37,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:37,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-20 16:15:37,690 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)] === [2024-06-20 16:15:37,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:37,691 INFO L85 PathProgramCache]: Analyzing trace with hash 876403474, now seen corresponding path program 4 times [2024-06-20 16:15:37,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:37,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662991530] [2024-06-20 16:15:37,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:37,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:38,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:38,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:38,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662991530] [2024-06-20 16:15:38,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662991530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:38,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:38,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:15:38,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926528636] [2024-06-20 16:15:38,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:38,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:15:38,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:38,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:15:38,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:15:38,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:15:38,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 205 transitions, 2246 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) [2024-06-20 16:15:38,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:38,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:15:38,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:39,672 INFO L124 PetriNetUnfolderBase]: 2237/3476 cut-off events. [2024-06-20 16:15:39,672 INFO L125 PetriNetUnfolderBase]: For 132563/132563 co-relation queries the response was YES. [2024-06-20 16:15:39,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25020 conditions, 3476 events. 2237/3476 cut-off events. For 132563/132563 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 17837 event pairs, 513 based on Foata normal form. 2/3474 useless extension candidates. Maximal degree in co-relation 24961. Up to 3007 conditions per place. [2024-06-20 16:15:39,697 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 128 selfloop transitions, 100 changer transitions 0/234 dead transitions. [2024-06-20 16:15:39,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 234 transitions, 2884 flow [2024-06-20 16:15:39,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:15:39,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:15:39,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-20 16:15:39,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-06-20 16:15:39,699 INFO L175 Difference]: Start difference. First operand has 141 places, 205 transitions, 2246 flow. Second operand 9 states and 172 transitions. [2024-06-20 16:15:39,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 234 transitions, 2884 flow [2024-06-20 16:15:39,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 234 transitions, 2757 flow, removed 52 selfloop flow, removed 4 redundant places. [2024-06-20 16:15:39,801 INFO L231 Difference]: Finished difference. Result has 146 places, 208 transitions, 2425 flow [2024-06-20 16:15:39,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2425, PETRI_PLACES=146, PETRI_TRANSITIONS=208} [2024-06-20 16:15:39,802 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 103 predicate places. [2024-06-20 16:15:39,802 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 208 transitions, 2425 flow [2024-06-20 16:15:39,802 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) [2024-06-20 16:15:39,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:39,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:39,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-20 16:15:39,803 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)] === [2024-06-20 16:15:39,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:39,803 INFO L85 PathProgramCache]: Analyzing trace with hash 648502324, now seen corresponding path program 5 times [2024-06-20 16:15:39,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:39,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917647910] [2024-06-20 16:15:39,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:39,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:40,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:40,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:40,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917647910] [2024-06-20 16:15:40,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917647910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:40,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:40,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:15:40,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496130388] [2024-06-20 16:15:40,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:40,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:15:40,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:40,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:15:40,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:15:41,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:15:41,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 208 transitions, 2425 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) [2024-06-20 16:15:41,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:41,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:15:41,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:41,781 INFO L124 PetriNetUnfolderBase]: 2248/3492 cut-off events. [2024-06-20 16:15:41,781 INFO L125 PetriNetUnfolderBase]: For 127315/127315 co-relation queries the response was YES. [2024-06-20 16:15:41,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25226 conditions, 3492 events. 2248/3492 cut-off events. For 127315/127315 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 17929 event pairs, 561 based on Foata normal form. 2/3490 useless extension candidates. Maximal degree in co-relation 25167. Up to 3021 conditions per place. [2024-06-20 16:15:41,805 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 136 selfloop transitions, 97 changer transitions 0/239 dead transitions. [2024-06-20 16:15:41,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 239 transitions, 3189 flow [2024-06-20 16:15:41,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:15:41,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:15:41,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-20 16:15:41,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-20 16:15:41,806 INFO L175 Difference]: Start difference. First operand has 146 places, 208 transitions, 2425 flow. Second operand 9 states and 175 transitions. [2024-06-20 16:15:41,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 239 transitions, 3189 flow [2024-06-20 16:15:41,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 239 transitions, 2903 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-20 16:15:41,888 INFO L231 Difference]: Finished difference. Result has 148 places, 211 transitions, 2445 flow [2024-06-20 16:15:41,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2139, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2445, PETRI_PLACES=148, PETRI_TRANSITIONS=211} [2024-06-20 16:15:41,889 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 105 predicate places. [2024-06-20 16:15:41,889 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 211 transitions, 2445 flow [2024-06-20 16:15:41,889 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) [2024-06-20 16:15:41,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:41,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:41,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-20 16:15:41,890 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)] === [2024-06-20 16:15:41,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:41,890 INFO L85 PathProgramCache]: Analyzing trace with hash 884974602, now seen corresponding path program 3 times [2024-06-20 16:15:41,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:41,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406175371] [2024-06-20 16:15:41,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:41,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:42,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:42,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:42,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406175371] [2024-06-20 16:15:42,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406175371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:42,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:42,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:15:42,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349158632] [2024-06-20 16:15:42,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:42,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:15:42,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:42,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:15:42,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:15:42,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:15:42,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 211 transitions, 2445 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) [2024-06-20 16:15:42,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:42,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:15:42,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:43,771 INFO L124 PetriNetUnfolderBase]: 2368/3696 cut-off events. [2024-06-20 16:15:43,771 INFO L125 PetriNetUnfolderBase]: For 147839/147843 co-relation queries the response was YES. [2024-06-20 16:15:43,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27568 conditions, 3696 events. 2368/3696 cut-off events. For 147839/147843 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 19459 event pairs, 509 based on Foata normal form. 8/3701 useless extension candidates. Maximal degree in co-relation 27508. Up to 2766 conditions per place. [2024-06-20 16:15:43,805 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 162 selfloop transitions, 85 changer transitions 0/253 dead transitions. [2024-06-20 16:15:43,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 253 transitions, 3447 flow [2024-06-20 16:15:43,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:15:43,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:15:43,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-20 16:15:43,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-20 16:15:43,807 INFO L175 Difference]: Start difference. First operand has 148 places, 211 transitions, 2445 flow. Second operand 9 states and 180 transitions. [2024-06-20 16:15:43,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 253 transitions, 3447 flow [2024-06-20 16:15:43,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 253 transitions, 3139 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-20 16:15:43,920 INFO L231 Difference]: Finished difference. Result has 152 places, 216 transitions, 2470 flow [2024-06-20 16:15:43,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2137, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2470, PETRI_PLACES=152, PETRI_TRANSITIONS=216} [2024-06-20 16:15:43,921 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 109 predicate places. [2024-06-20 16:15:43,922 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 216 transitions, 2470 flow [2024-06-20 16:15:43,922 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) [2024-06-20 16:15:43,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:43,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:43,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-20 16:15:43,922 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)] === [2024-06-20 16:15:43,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:43,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1239109538, now seen corresponding path program 4 times [2024-06-20 16:15:43,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:43,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366933998] [2024-06-20 16:15:43,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:43,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:44,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:44,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:44,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366933998] [2024-06-20 16:15:44,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366933998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:44,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:44,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:15:44,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970504801] [2024-06-20 16:15:44,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:44,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:15:44,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:44,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:15:44,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:15:45,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:15:45,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 216 transitions, 2470 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) [2024-06-20 16:15:45,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:45,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:15:45,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:45,698 INFO L124 PetriNetUnfolderBase]: 2360/3679 cut-off events. [2024-06-20 16:15:45,698 INFO L125 PetriNetUnfolderBase]: For 153462/153466 co-relation queries the response was YES. [2024-06-20 16:15:45,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27767 conditions, 3679 events. 2360/3679 cut-off events. For 153462/153466 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 19321 event pairs, 554 based on Foata normal form. 8/3684 useless extension candidates. Maximal degree in co-relation 27705. Up to 3390 conditions per place. [2024-06-20 16:15:45,727 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 200 selfloop transitions, 38 changer transitions 0/244 dead transitions. [2024-06-20 16:15:45,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 244 transitions, 3091 flow [2024-06-20 16:15:45,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:15:45,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:15:45,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-20 16:15:45,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-20 16:15:45,728 INFO L175 Difference]: Start difference. First operand has 152 places, 216 transitions, 2470 flow. Second operand 9 states and 168 transitions. [2024-06-20 16:15:45,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 244 transitions, 3091 flow [2024-06-20 16:15:45,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 244 transitions, 2945 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-20 16:15:45,845 INFO L231 Difference]: Finished difference. Result has 156 places, 217 transitions, 2462 flow [2024-06-20 16:15:45,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2324, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2462, PETRI_PLACES=156, PETRI_TRANSITIONS=217} [2024-06-20 16:15:45,846 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 113 predicate places. [2024-06-20 16:15:45,846 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 217 transitions, 2462 flow [2024-06-20 16:15:45,846 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) [2024-06-20 16:15:45,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:45,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:45,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-20 16:15:45,847 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)] === [2024-06-20 16:15:45,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:45,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1076555994, now seen corresponding path program 6 times [2024-06-20 16:15:45,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:45,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792356032] [2024-06-20 16:15:45,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:45,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:46,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:46,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:46,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792356032] [2024-06-20 16:15:46,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792356032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:46,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:46,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:15:46,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436571477] [2024-06-20 16:15:46,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:46,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:15:46,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:46,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:15:46,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:15:46,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:15:46,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 217 transitions, 2462 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) [2024-06-20 16:15:46,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:46,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:15:46,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:47,732 INFO L124 PetriNetUnfolderBase]: 2355/3669 cut-off events. [2024-06-20 16:15:47,733 INFO L125 PetriNetUnfolderBase]: For 159478/159478 co-relation queries the response was YES. [2024-06-20 16:15:47,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27808 conditions, 3669 events. 2355/3669 cut-off events. For 159478/159478 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 19257 event pairs, 536 based on Foata normal form. 2/3667 useless extension candidates. Maximal degree in co-relation 27744. Up to 3076 conditions per place. [2024-06-20 16:15:47,762 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 110 selfloop transitions, 132 changer transitions 0/248 dead transitions. [2024-06-20 16:15:47,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 248 transitions, 3262 flow [2024-06-20 16:15:47,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:15:47,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:15:47,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-20 16:15:47,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-06-20 16:15:47,764 INFO L175 Difference]: Start difference. First operand has 156 places, 217 transitions, 2462 flow. Second operand 9 states and 174 transitions. [2024-06-20 16:15:47,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 248 transitions, 3262 flow [2024-06-20 16:15:47,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 248 transitions, 3135 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-20 16:15:47,873 INFO L231 Difference]: Finished difference. Result has 158 places, 220 transitions, 2717 flow [2024-06-20 16:15:47,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2335, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2717, PETRI_PLACES=158, PETRI_TRANSITIONS=220} [2024-06-20 16:15:47,873 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 115 predicate places. [2024-06-20 16:15:47,873 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 220 transitions, 2717 flow [2024-06-20 16:15:47,873 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) [2024-06-20 16:15:47,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:47,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:47,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-20 16:15:47,874 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)] === [2024-06-20 16:15:47,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:47,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1239289276, now seen corresponding path program 7 times [2024-06-20 16:15:47,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:47,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017177147] [2024-06-20 16:15:47,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:47,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:47,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:49,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:49,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:49,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017177147] [2024-06-20 16:15:49,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017177147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:49,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:49,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:15:49,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706272658] [2024-06-20 16:15:49,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:49,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:15:49,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:49,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:15:49,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:15:49,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:15:49,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 220 transitions, 2717 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) [2024-06-20 16:15:49,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:49,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:15:49,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:50,093 INFO L124 PetriNetUnfolderBase]: 2377/3709 cut-off events. [2024-06-20 16:15:50,093 INFO L125 PetriNetUnfolderBase]: For 169042/169046 co-relation queries the response was YES. [2024-06-20 16:15:50,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28909 conditions, 3709 events. 2377/3709 cut-off events. For 169042/169046 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 19577 event pairs, 602 based on Foata normal form. 6/3712 useless extension candidates. Maximal degree in co-relation 28844. Up to 3370 conditions per place. [2024-06-20 16:15:50,125 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 193 selfloop transitions, 53 changer transitions 0/252 dead transitions. [2024-06-20 16:15:50,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 252 transitions, 3423 flow [2024-06-20 16:15:50,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:15:50,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:15:50,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-20 16:15:50,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-20 16:15:50,127 INFO L175 Difference]: Start difference. First operand has 158 places, 220 transitions, 2717 flow. Second operand 9 states and 170 transitions. [2024-06-20 16:15:50,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 252 transitions, 3423 flow [2024-06-20 16:15:50,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 252 transitions, 3053 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-20 16:15:50,279 INFO L231 Difference]: Finished difference. Result has 160 places, 226 transitions, 2591 flow [2024-06-20 16:15:50,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2359, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2591, PETRI_PLACES=160, PETRI_TRANSITIONS=226} [2024-06-20 16:15:50,280 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 117 predicate places. [2024-06-20 16:15:50,280 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 226 transitions, 2591 flow [2024-06-20 16:15:50,280 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) [2024-06-20 16:15:50,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:50,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:50,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-20 16:15:50,280 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)] === [2024-06-20 16:15:50,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:50,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1239116296, now seen corresponding path program 8 times [2024-06-20 16:15:50,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:50,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824886348] [2024-06-20 16:15:50,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:50,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:51,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:51,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:51,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824886348] [2024-06-20 16:15:51,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824886348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:51,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:51,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:15:51,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153310297] [2024-06-20 16:15:51,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:51,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:15:51,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:51,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:15:51,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:15:51,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:15:51,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 226 transitions, 2591 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) [2024-06-20 16:15:51,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:51,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:15:51,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:52,311 INFO L124 PetriNetUnfolderBase]: 2372/3702 cut-off events. [2024-06-20 16:15:52,311 INFO L125 PetriNetUnfolderBase]: For 175237/175241 co-relation queries the response was YES. [2024-06-20 16:15:52,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28535 conditions, 3702 events. 2372/3702 cut-off events. For 175237/175241 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 19502 event pairs, 555 based on Foata normal form. 6/3705 useless extension candidates. Maximal degree in co-relation 28469. Up to 3363 conditions per place. [2024-06-20 16:15:52,340 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 194 selfloop transitions, 52 changer transitions 0/252 dead transitions. [2024-06-20 16:15:52,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 252 transitions, 3173 flow [2024-06-20 16:15:52,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:15:52,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:15:52,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-20 16:15:52,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-20 16:15:52,342 INFO L175 Difference]: Start difference. First operand has 160 places, 226 transitions, 2591 flow. Second operand 9 states and 171 transitions. [2024-06-20 16:15:52,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 252 transitions, 3173 flow [2024-06-20 16:15:52,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 252 transitions, 2927 flow, removed 67 selfloop flow, removed 7 redundant places. [2024-06-20 16:15:52,573 INFO L231 Difference]: Finished difference. Result has 162 places, 226 transitions, 2457 flow [2024-06-20 16:15:52,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2345, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2457, PETRI_PLACES=162, PETRI_TRANSITIONS=226} [2024-06-20 16:15:52,573 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 119 predicate places. [2024-06-20 16:15:52,573 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 226 transitions, 2457 flow [2024-06-20 16:15:52,574 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) [2024-06-20 16:15:52,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:52,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:52,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-20 16:15:52,574 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:15:52,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:52,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1821837112, now seen corresponding path program 2 times [2024-06-20 16:15:52,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:52,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319259115] [2024-06-20 16:15:52,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:52,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:53,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:53,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:53,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319259115] [2024-06-20 16:15:53,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319259115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:53,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:53,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:15:53,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909735009] [2024-06-20 16:15:53,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:53,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:15:53,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:53,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:15:53,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:15:53,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:15:53,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 226 transitions, 2457 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) [2024-06-20 16:15:53,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:53,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:15:53,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:53,999 INFO L124 PetriNetUnfolderBase]: 2366/3691 cut-off events. [2024-06-20 16:15:54,000 INFO L125 PetriNetUnfolderBase]: For 181920/181920 co-relation queries the response was YES. [2024-06-20 16:15:54,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28426 conditions, 3691 events. 2366/3691 cut-off events. For 181920/181920 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 19403 event pairs, 546 based on Foata normal form. 2/3689 useless extension candidates. Maximal degree in co-relation 28360. Up to 3427 conditions per place. [2024-06-20 16:15:54,029 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 192 selfloop transitions, 38 changer transitions 0/236 dead transitions. [2024-06-20 16:15:54,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 236 transitions, 2961 flow [2024-06-20 16:15:54,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:15:54,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:15:54,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-20 16:15:54,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-20 16:15:54,030 INFO L175 Difference]: Start difference. First operand has 162 places, 226 transitions, 2457 flow. Second operand 6 states and 111 transitions. [2024-06-20 16:15:54,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 236 transitions, 2961 flow [2024-06-20 16:15:54,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 236 transitions, 2809 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-20 16:15:54,162 INFO L231 Difference]: Finished difference. Result has 160 places, 226 transitions, 2387 flow [2024-06-20 16:15:54,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2305, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2387, PETRI_PLACES=160, PETRI_TRANSITIONS=226} [2024-06-20 16:15:54,163 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 117 predicate places. [2024-06-20 16:15:54,163 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 226 transitions, 2387 flow [2024-06-20 16:15:54,163 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) [2024-06-20 16:15:54,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:54,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:54,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-20 16:15:54,164 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:15:54,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:54,164 INFO L85 PathProgramCache]: Analyzing trace with hash 874137724, now seen corresponding path program 1 times [2024-06-20 16:15:54,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:54,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715933614] [2024-06-20 16:15:54,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:54,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:54,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:54,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:54,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715933614] [2024-06-20 16:15:54,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715933614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:54,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:54,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:15:54,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343995278] [2024-06-20 16:15:54,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:54,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:15:54,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:54,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:15:54,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:15:54,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:15:54,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 226 transitions, 2387 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:54,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:54,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:15:54,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:55,473 INFO L124 PetriNetUnfolderBase]: 2164/3469 cut-off events. [2024-06-20 16:15:55,473 INFO L125 PetriNetUnfolderBase]: For 165072/165072 co-relation queries the response was YES. [2024-06-20 16:15:55,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26080 conditions, 3469 events. 2164/3469 cut-off events. For 165072/165072 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 18744 event pairs, 498 based on Foata normal form. 1/3468 useless extension candidates. Maximal degree in co-relation 26013. Up to 3211 conditions per place. [2024-06-20 16:15:55,502 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 220 selfloop transitions, 17 changer transitions 0/244 dead transitions. [2024-06-20 16:15:55,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 244 transitions, 3025 flow [2024-06-20 16:15:55,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:15:55,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:15:55,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-06-20 16:15:55,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-20 16:15:55,503 INFO L175 Difference]: Start difference. First operand has 160 places, 226 transitions, 2387 flow. Second operand 6 states and 117 transitions. [2024-06-20 16:15:55,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 244 transitions, 3025 flow [2024-06-20 16:15:55,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 244 transitions, 2916 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-20 16:15:55,649 INFO L231 Difference]: Finished difference. Result has 161 places, 232 transitions, 2380 flow [2024-06-20 16:15:55,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2278, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2380, PETRI_PLACES=161, PETRI_TRANSITIONS=232} [2024-06-20 16:15:55,650 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 118 predicate places. [2024-06-20 16:15:55,650 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 232 transitions, 2380 flow [2024-06-20 16:15:55,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:55,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:55,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:55,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-20 16:15:55,650 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:15:55,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:55,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1853123614, now seen corresponding path program 2 times [2024-06-20 16:15:55,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:55,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133830610] [2024-06-20 16:15:55,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:55,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:56,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:56,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:56,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133830610] [2024-06-20 16:15:56,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133830610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:56,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:56,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:15:56,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165061219] [2024-06-20 16:15:56,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:56,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:15:56,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:56,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:15:56,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:15:56,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:15:56,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 232 transitions, 2380 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:56,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:56,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:15:56,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:56,956 INFO L124 PetriNetUnfolderBase]: 2161/3465 cut-off events. [2024-06-20 16:15:56,956 INFO L125 PetriNetUnfolderBase]: For 171215/171215 co-relation queries the response was YES. [2024-06-20 16:15:56,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26428 conditions, 3465 events. 2161/3465 cut-off events. For 171215/171215 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 18748 event pairs, 497 based on Foata normal form. 1/3464 useless extension candidates. Maximal degree in co-relation 26360. Up to 3220 conditions per place. [2024-06-20 16:15:56,987 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 221 selfloop transitions, 12 changer transitions 0/240 dead transitions. [2024-06-20 16:15:56,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 240 transitions, 2870 flow [2024-06-20 16:15:56,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:15:56,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:15:56,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-20 16:15:56,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-20 16:15:56,990 INFO L175 Difference]: Start difference. First operand has 161 places, 232 transitions, 2380 flow. Second operand 6 states and 111 transitions. [2024-06-20 16:15:56,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 240 transitions, 2870 flow [2024-06-20 16:15:57,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 240 transitions, 2821 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-20 16:15:57,117 INFO L231 Difference]: Finished difference. Result has 165 places, 232 transitions, 2361 flow [2024-06-20 16:15:57,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2331, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2361, PETRI_PLACES=165, PETRI_TRANSITIONS=232} [2024-06-20 16:15:57,118 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 122 predicate places. [2024-06-20 16:15:57,118 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 232 transitions, 2361 flow [2024-06-20 16:15:57,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:57,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:57,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:57,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-20 16:15:57,118 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:15:57,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:57,119 INFO L85 PathProgramCache]: Analyzing trace with hash 879859580, now seen corresponding path program 1 times [2024-06-20 16:15:57,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:57,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159927096] [2024-06-20 16:15:57,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:57,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:15:57,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:15:57,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:15:57,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159927096] [2024-06-20 16:15:57,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159927096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:15:57,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:15:57,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:15:57,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107606129] [2024-06-20 16:15:57,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:15:57,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:15:57,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:15:57,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:15:57,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:15:57,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:15:57,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 232 transitions, 2361 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:57,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:15:57,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:15:57,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:15:58,681 INFO L124 PetriNetUnfolderBase]: 2271/3573 cut-off events. [2024-06-20 16:15:58,681 INFO L125 PetriNetUnfolderBase]: For 179317/179317 co-relation queries the response was YES. [2024-06-20 16:15:58,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27351 conditions, 3573 events. 2271/3573 cut-off events. For 179317/179317 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 18860 event pairs, 529 based on Foata normal form. 2/3573 useless extension candidates. Maximal degree in co-relation 27281. Up to 3411 conditions per place. [2024-06-20 16:15:58,711 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 225 selfloop transitions, 15 changer transitions 0/245 dead transitions. [2024-06-20 16:15:58,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 245 transitions, 2901 flow [2024-06-20 16:15:58,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:15:58,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:15:58,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-20 16:15:58,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41156462585034015 [2024-06-20 16:15:58,712 INFO L175 Difference]: Start difference. First operand has 165 places, 232 transitions, 2361 flow. Second operand 7 states and 121 transitions. [2024-06-20 16:15:58,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 245 transitions, 2901 flow [2024-06-20 16:15:58,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 245 transitions, 2869 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-20 16:15:58,877 INFO L231 Difference]: Finished difference. Result has 167 places, 235 transitions, 2403 flow [2024-06-20 16:15:58,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2329, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2403, PETRI_PLACES=167, PETRI_TRANSITIONS=235} [2024-06-20 16:15:58,878 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 124 predicate places. [2024-06-20 16:15:58,878 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 235 transitions, 2403 flow [2024-06-20 16:15:58,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:15:58,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:15:58,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:15:58,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-20 16:15:58,878 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)] === [2024-06-20 16:15:58,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:15:58,879 INFO L85 PathProgramCache]: Analyzing trace with hash 74338842, now seen corresponding path program 1 times [2024-06-20 16:15:58,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:15:58,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852539794] [2024-06-20 16:15:58,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:15:58,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:15:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:16:00,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:16:00,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:16:00,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852539794] [2024-06-20 16:16:00,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852539794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:16:00,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:16:00,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:16:00,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120583271] [2024-06-20 16:16:00,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:16:00,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:16:00,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:16:00,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:16:00,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:16:00,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:16:00,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 235 transitions, 2403 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) [2024-06-20 16:16:00,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:16:00,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:16:00,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:16:01,147 INFO L124 PetriNetUnfolderBase]: 2420/3784 cut-off events. [2024-06-20 16:16:01,148 INFO L125 PetriNetUnfolderBase]: For 222545/222547 co-relation queries the response was YES. [2024-06-20 16:16:01,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30461 conditions, 3784 events. 2420/3784 cut-off events. For 222545/222547 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 20139 event pairs, 533 based on Foata normal form. 18/3800 useless extension candidates. Maximal degree in co-relation 30390. Up to 3332 conditions per place. [2024-06-20 16:16:01,180 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 197 selfloop transitions, 71 changer transitions 0/274 dead transitions. [2024-06-20 16:16:01,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 274 transitions, 3169 flow [2024-06-20 16:16:01,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:16:01,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:16:01,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-20 16:16:01,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-20 16:16:01,182 INFO L175 Difference]: Start difference. First operand has 167 places, 235 transitions, 2403 flow. Second operand 10 states and 189 transitions. [2024-06-20 16:16:01,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 274 transitions, 3169 flow [2024-06-20 16:16:01,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 274 transitions, 3117 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-20 16:16:01,347 INFO L231 Difference]: Finished difference. Result has 172 places, 236 transitions, 2556 flow [2024-06-20 16:16:01,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2351, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2556, PETRI_PLACES=172, PETRI_TRANSITIONS=236} [2024-06-20 16:16:01,348 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 129 predicate places. [2024-06-20 16:16:01,348 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 236 transitions, 2556 flow [2024-06-20 16:16:01,349 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) [2024-06-20 16:16:01,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:16:01,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:16:01,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-20 16:16:01,349 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)] === [2024-06-20 16:16:01,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:16:01,350 INFO L85 PathProgramCache]: Analyzing trace with hash 218431182, now seen corresponding path program 2 times [2024-06-20 16:16:01,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:16:01,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883953420] [2024-06-20 16:16:01,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:16:01,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:16:01,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:16:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:16:02,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:16:02,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883953420] [2024-06-20 16:16:02,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883953420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:16:02,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:16:02,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:16:02,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29080101] [2024-06-20 16:16:02,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:16:02,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:16:02,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:16:02,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:16:02,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:16:02,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:16:02,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 236 transitions, 2556 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) [2024-06-20 16:16:02,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:16:02,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:16:02,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:16:03,524 INFO L124 PetriNetUnfolderBase]: 2478/3889 cut-off events. [2024-06-20 16:16:03,524 INFO L125 PetriNetUnfolderBase]: For 238795/238795 co-relation queries the response was YES. [2024-06-20 16:16:03,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31816 conditions, 3889 events. 2478/3889 cut-off events. For 238795/238795 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 20863 event pairs, 599 based on Foata normal form. 16/3903 useless extension candidates. Maximal degree in co-relation 31744. Up to 3351 conditions per place. [2024-06-20 16:16:03,556 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 175 selfloop transitions, 92 changer transitions 0/273 dead transitions. [2024-06-20 16:16:03,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 273 transitions, 3316 flow [2024-06-20 16:16:03,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:16:03,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:16:03,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-20 16:16:03,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-20 16:16:03,558 INFO L175 Difference]: Start difference. First operand has 172 places, 236 transitions, 2556 flow. Second operand 10 states and 190 transitions. [2024-06-20 16:16:03,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 273 transitions, 3316 flow [2024-06-20 16:16:03,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 273 transitions, 3159 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-20 16:16:03,713 INFO L231 Difference]: Finished difference. Result has 174 places, 237 transitions, 2646 flow [2024-06-20 16:16:03,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2399, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2646, PETRI_PLACES=174, PETRI_TRANSITIONS=237} [2024-06-20 16:16:03,722 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 131 predicate places. [2024-06-20 16:16:03,722 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 237 transitions, 2646 flow [2024-06-20 16:16:03,723 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) [2024-06-20 16:16:03,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:16:03,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:16:03,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-20 16:16:03,723 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)] === [2024-06-20 16:16:03,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:16:03,723 INFO L85 PathProgramCache]: Analyzing trace with hash 218438622, now seen corresponding path program 3 times [2024-06-20 16:16:03,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:16:03,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279024607] [2024-06-20 16:16:03,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:16:03,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:16:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:16:05,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:16:05,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:16:05,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279024607] [2024-06-20 16:16:05,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279024607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:16:05,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:16:05,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:16:05,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266250428] [2024-06-20 16:16:05,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:16:05,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:16:05,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:16:05,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:16:05,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:16:05,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:16:05,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 237 transitions, 2646 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) [2024-06-20 16:16:05,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:16:05,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:16:05,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:16:06,261 INFO L124 PetriNetUnfolderBase]: 2519/3974 cut-off events. [2024-06-20 16:16:06,261 INFO L125 PetriNetUnfolderBase]: For 247652/247654 co-relation queries the response was YES. [2024-06-20 16:16:06,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32686 conditions, 3974 events. 2519/3974 cut-off events. For 247652/247654 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 21610 event pairs, 605 based on Foata normal form. 14/3986 useless extension candidates. Maximal degree in co-relation 32613. Up to 3356 conditions per place. [2024-06-20 16:16:06,296 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 227 selfloop transitions, 45 changer transitions 0/278 dead transitions. [2024-06-20 16:16:06,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 278 transitions, 3458 flow [2024-06-20 16:16:06,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:16:06,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:16:06,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-20 16:16:06,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-20 16:16:06,298 INFO L175 Difference]: Start difference. First operand has 174 places, 237 transitions, 2646 flow. Second operand 10 states and 192 transitions. [2024-06-20 16:16:06,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 278 transitions, 3458 flow [2024-06-20 16:16:06,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 278 transitions, 3255 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-20 16:16:06,496 INFO L231 Difference]: Finished difference. Result has 176 places, 238 transitions, 2597 flow [2024-06-20 16:16:06,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2443, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2597, PETRI_PLACES=176, PETRI_TRANSITIONS=238} [2024-06-20 16:16:06,497 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 133 predicate places. [2024-06-20 16:16:06,497 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 238 transitions, 2597 flow [2024-06-20 16:16:06,497 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) [2024-06-20 16:16:06,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:16:06,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:16:06,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-20 16:16:06,498 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:16:06,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:16:06,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1151151484, now seen corresponding path program 1 times [2024-06-20 16:16:06,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:16:06,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941546516] [2024-06-20 16:16:06,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:16:06,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:16:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:16:07,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:16:07,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:16:07,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941546516] [2024-06-20 16:16:07,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941546516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:16:07,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:16:07,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:16:07,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493176040] [2024-06-20 16:16:07,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:16:07,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:16:07,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:16:07,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:16:07,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:16:07,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:16:07,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 238 transitions, 2597 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:16:07,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:16:07,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:16:07,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:16:08,236 INFO L124 PetriNetUnfolderBase]: 2642/4097 cut-off events. [2024-06-20 16:16:08,237 INFO L125 PetriNetUnfolderBase]: For 248660/248660 co-relation queries the response was YES. [2024-06-20 16:16:08,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33551 conditions, 4097 events. 2642/4097 cut-off events. For 248660/248660 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 21828 event pairs, 607 based on Foata normal form. 2/4097 useless extension candidates. Maximal degree in co-relation 33477. Up to 3880 conditions per place. [2024-06-20 16:16:08,272 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 212 selfloop transitions, 46 changer transitions 0/262 dead transitions. [2024-06-20 16:16:08,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 262 transitions, 3375 flow [2024-06-20 16:16:08,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:16:08,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:16:08,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-20 16:16:08,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43537414965986393 [2024-06-20 16:16:08,274 INFO L175 Difference]: Start difference. First operand has 176 places, 238 transitions, 2597 flow. Second operand 7 states and 128 transitions. [2024-06-20 16:16:08,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 262 transitions, 3375 flow [2024-06-20 16:16:08,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 262 transitions, 3257 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-20 16:16:08,474 INFO L231 Difference]: Finished difference. Result has 175 places, 244 transitions, 2687 flow [2024-06-20 16:16:08,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2479, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2687, PETRI_PLACES=175, PETRI_TRANSITIONS=244} [2024-06-20 16:16:08,475 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 132 predicate places. [2024-06-20 16:16:08,475 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 244 transitions, 2687 flow [2024-06-20 16:16:08,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:16:08,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:16:08,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:16:08,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-20 16:16:08,476 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)] === [2024-06-20 16:16:08,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:16:08,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1664409792, now seen corresponding path program 4 times [2024-06-20 16:16:08,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:16:08,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795887447] [2024-06-20 16:16:08,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:16:08,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:16:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:16:09,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:16:09,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:16:09,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795887447] [2024-06-20 16:16:09,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795887447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:16:09,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:16:09,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:16:09,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046699714] [2024-06-20 16:16:09,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:16:09,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:16:09,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:16:09,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:16:09,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:16:09,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:16:09,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 244 transitions, 2687 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) [2024-06-20 16:16:09,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:16:09,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:16:09,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:16:10,582 INFO L124 PetriNetUnfolderBase]: 2787/4418 cut-off events. [2024-06-20 16:16:10,582 INFO L125 PetriNetUnfolderBase]: For 297670/297670 co-relation queries the response was YES. [2024-06-20 16:16:10,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37624 conditions, 4418 events. 2787/4418 cut-off events. For 297670/297670 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 24808 event pairs, 556 based on Foata normal form. 12/4426 useless extension candidates. Maximal degree in co-relation 37549. Up to 2853 conditions per place. [2024-06-20 16:16:10,622 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 132 selfloop transitions, 149 changer transitions 0/289 dead transitions. [2024-06-20 16:16:10,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 289 transitions, 3851 flow [2024-06-20 16:16:10,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:16:10,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:16:10,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-20 16:16:10,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-20 16:16:10,624 INFO L175 Difference]: Start difference. First operand has 175 places, 244 transitions, 2687 flow. Second operand 10 states and 196 transitions. [2024-06-20 16:16:10,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 289 transitions, 3851 flow [2024-06-20 16:16:10,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 289 transitions, 3780 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-20 16:16:10,859 INFO L231 Difference]: Finished difference. Result has 183 places, 249 transitions, 3203 flow [2024-06-20 16:16:10,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2616, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3203, PETRI_PLACES=183, PETRI_TRANSITIONS=249} [2024-06-20 16:16:10,860 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 140 predicate places. [2024-06-20 16:16:10,860 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 249 transitions, 3203 flow [2024-06-20 16:16:10,860 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) [2024-06-20 16:16:10,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:16:10,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:16:10,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-20 16:16:10,861 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:16:10,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:16:10,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1655205582, now seen corresponding path program 5 times [2024-06-20 16:16:10,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:16:10,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768765123] [2024-06-20 16:16:10,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:16:10,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:16:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:16:12,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:16:12,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:16:12,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768765123] [2024-06-20 16:16:12,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768765123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:16:12,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:16:12,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:16:12,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215822721] [2024-06-20 16:16:12,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:16:12,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:16:12,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:16:12,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:16:12,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:16:12,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:16:12,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 249 transitions, 3203 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) [2024-06-20 16:16:12,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:16:12,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:16:12,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:16:13,248 INFO L124 PetriNetUnfolderBase]: 2851/4522 cut-off events. [2024-06-20 16:16:13,248 INFO L125 PetriNetUnfolderBase]: For 321597/321597 co-relation queries the response was YES. [2024-06-20 16:16:13,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39735 conditions, 4522 events. 2851/4522 cut-off events. For 321597/321597 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 25564 event pairs, 681 based on Foata normal form. 16/4534 useless extension candidates. Maximal degree in co-relation 39657. Up to 3797 conditions per place. [2024-06-20 16:16:13,289 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 137 selfloop transitions, 139 changer transitions 0/284 dead transitions. [2024-06-20 16:16:13,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 284 transitions, 3984 flow [2024-06-20 16:16:13,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:16:13,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:16:13,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-20 16:16:13,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45476190476190476 [2024-06-20 16:16:13,290 INFO L175 Difference]: Start difference. First operand has 183 places, 249 transitions, 3203 flow. Second operand 10 states and 191 transitions. [2024-06-20 16:16:13,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 284 transitions, 3984 flow [2024-06-20 16:16:13,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 284 transitions, 3783 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-20 16:16:13,590 INFO L231 Difference]: Finished difference. Result has 187 places, 250 transitions, 3350 flow [2024-06-20 16:16:13,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3002, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3350, PETRI_PLACES=187, PETRI_TRANSITIONS=250} [2024-06-20 16:16:13,591 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 144 predicate places. [2024-06-20 16:16:13,591 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 250 transitions, 3350 flow [2024-06-20 16:16:13,591 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) [2024-06-20 16:16:13,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:16:13,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:16:13,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-20 16:16:13,592 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:16:13,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:16:13,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1058277040, now seen corresponding path program 6 times [2024-06-20 16:16:13,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:16:13,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501709378] [2024-06-20 16:16:13,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:16:13,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:16:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:16:14,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:16:14,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:16:14,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501709378] [2024-06-20 16:16:14,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501709378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:16:14,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:16:14,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:16:14,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613740109] [2024-06-20 16:16:14,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:16:14,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:16:14,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:16:14,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:16:14,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:16:14,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:16:14,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 250 transitions, 3350 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) [2024-06-20 16:16:14,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:16:14,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:16:14,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:16:15,720 INFO L124 PetriNetUnfolderBase]: 2902/4623 cut-off events. [2024-06-20 16:16:15,720 INFO L125 PetriNetUnfolderBase]: For 337215/337215 co-relation queries the response was YES. [2024-06-20 16:16:15,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41186 conditions, 4623 events. 2902/4623 cut-off events. For 337215/337215 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 26425 event pairs, 738 based on Foata normal form. 16/4635 useless extension candidates. Maximal degree in co-relation 41106. Up to 4010 conditions per place. [2024-06-20 16:16:15,764 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 173 selfloop transitions, 104 changer transitions 0/285 dead transitions. [2024-06-20 16:16:15,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 285 transitions, 4135 flow [2024-06-20 16:16:15,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:16:15,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:16:15,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-20 16:16:15,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-20 16:16:15,769 INFO L175 Difference]: Start difference. First operand has 187 places, 250 transitions, 3350 flow. Second operand 10 states and 192 transitions. [2024-06-20 16:16:15,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 285 transitions, 4135 flow [2024-06-20 16:16:16,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 285 transitions, 3834 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-20 16:16:16,060 INFO L231 Difference]: Finished difference. Result has 189 places, 251 transitions, 3329 flow [2024-06-20 16:16:16,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3049, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3329, PETRI_PLACES=189, PETRI_TRANSITIONS=251} [2024-06-20 16:16:16,060 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 146 predicate places. [2024-06-20 16:16:16,060 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 251 transitions, 3329 flow [2024-06-20 16:16:16,060 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) [2024-06-20 16:16:16,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:16:16,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:16:16,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-20 16:16:16,061 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:16:16,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:16:16,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1058075230, now seen corresponding path program 7 times [2024-06-20 16:16:16,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:16:16,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527384167] [2024-06-20 16:16:16,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:16:16,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:16:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:16:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:16:17,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:16:17,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527384167] [2024-06-20 16:16:17,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527384167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:16:17,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:16:17,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:16:17,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125199224] [2024-06-20 16:16:17,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:16:17,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:16:17,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:16:17,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:16:17,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:16:17,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:16:17,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 251 transitions, 3329 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) [2024-06-20 16:16:17,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:16:17,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:16:17,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:16:18,495 INFO L124 PetriNetUnfolderBase]: 2960/4724 cut-off events. [2024-06-20 16:16:18,495 INFO L125 PetriNetUnfolderBase]: For 352369/352373 co-relation queries the response was YES. [2024-06-20 16:16:18,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42104 conditions, 4724 events. 2960/4724 cut-off events. For 352369/352373 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 27351 event pairs, 713 based on Foata normal form. 20/4741 useless extension candidates. Maximal degree in co-relation 42023. Up to 4259 conditions per place. [2024-06-20 16:16:18,538 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 225 selfloop transitions, 53 changer transitions 0/286 dead transitions. [2024-06-20 16:16:18,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 286 transitions, 4111 flow [2024-06-20 16:16:18,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:16:18,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:16:18,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-20 16:16:18,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-20 16:16:18,539 INFO L175 Difference]: Start difference. First operand has 189 places, 251 transitions, 3329 flow. Second operand 10 states and 190 transitions. [2024-06-20 16:16:18,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 286 transitions, 4111 flow [2024-06-20 16:16:18,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 286 transitions, 3878 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-20 16:16:18,868 INFO L231 Difference]: Finished difference. Result has 191 places, 252 transitions, 3269 flow [2024-06-20 16:16:18,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3096, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3269, PETRI_PLACES=191, PETRI_TRANSITIONS=252} [2024-06-20 16:16:18,869 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 148 predicate places. [2024-06-20 16:16:18,869 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 252 transitions, 3269 flow [2024-06-20 16:16:18,869 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) [2024-06-20 16:16:18,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:16:18,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:16:18,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-20 16:16:18,870 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)] === [2024-06-20 16:16:18,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:16:18,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1177316432, now seen corresponding path program 8 times [2024-06-20 16:16:18,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:16:18,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899621377] [2024-06-20 16:16:18,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:16:18,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:16:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:16:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:16:19,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:16:20,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899621377] [2024-06-20 16:16:20,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899621377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:16:20,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:16:20,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:16:20,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461033665] [2024-06-20 16:16:20,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:16:20,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:16:20,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:16:20,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:16:20,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:16:20,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:16:20,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 252 transitions, 3269 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) [2024-06-20 16:16:20,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:16:20,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:16:20,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:16:21,097 INFO L124 PetriNetUnfolderBase]: 3079/4932 cut-off events. [2024-06-20 16:16:21,097 INFO L125 PetriNetUnfolderBase]: For 376996/376996 co-relation queries the response was YES. [2024-06-20 16:16:21,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44453 conditions, 4932 events. 3079/4932 cut-off events. For 376996/376996 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 28892 event pairs, 729 based on Foata normal form. 12/4940 useless extension candidates. Maximal degree in co-relation 44371. Up to 4103 conditions per place. [2024-06-20 16:16:21,147 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 181 selfloop transitions, 106 changer transitions 0/295 dead transitions. [2024-06-20 16:16:21,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 295 transitions, 4398 flow [2024-06-20 16:16:21,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:16:21,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:16:21,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-20 16:16:21,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-20 16:16:21,148 INFO L175 Difference]: Start difference. First operand has 191 places, 252 transitions, 3269 flow. Second operand 10 states and 195 transitions. [2024-06-20 16:16:21,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 295 transitions, 4398 flow [2024-06-20 16:16:21,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 295 transitions, 4273 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-20 16:16:21,490 INFO L231 Difference]: Finished difference. Result has 194 places, 256 transitions, 3553 flow [2024-06-20 16:16:21,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3144, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3553, PETRI_PLACES=194, PETRI_TRANSITIONS=256} [2024-06-20 16:16:21,491 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 151 predicate places. [2024-06-20 16:16:21,491 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 256 transitions, 3553 flow [2024-06-20 16:16:21,491 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) [2024-06-20 16:16:21,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:16:21,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:16:21,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-20 16:16:21,491 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)] === [2024-06-20 16:16:21,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:16:21,492 INFO L85 PathProgramCache]: Analyzing trace with hash 893960870, now seen corresponding path program 9 times [2024-06-20 16:16:21,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:16:21,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292006467] [2024-06-20 16:16:21,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:16:21,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:16:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:16:22,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:16:22,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:16:22,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292006467] [2024-06-20 16:16:22,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292006467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:16:22,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:16:22,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:16:22,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313433735] [2024-06-20 16:16:22,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:16:22,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:16:22,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:16:22,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:16:22,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:16:22,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:16:22,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 256 transitions, 3553 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) [2024-06-20 16:16:22,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:16:22,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:16:22,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:16:23,822 INFO L124 PetriNetUnfolderBase]: 3058/4895 cut-off events. [2024-06-20 16:16:23,822 INFO L125 PetriNetUnfolderBase]: For 379464/379464 co-relation queries the response was YES. [2024-06-20 16:16:23,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43777 conditions, 4895 events. 3058/4895 cut-off events. For 379464/379464 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 28531 event pairs, 729 based on Foata normal form. 16/4907 useless extension candidates. Maximal degree in co-relation 43693. Up to 4281 conditions per place. [2024-06-20 16:16:23,869 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 178 selfloop transitions, 104 changer transitions 0/290 dead transitions. [2024-06-20 16:16:23,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 290 transitions, 4285 flow [2024-06-20 16:16:23,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:16:23,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:16:23,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-20 16:16:23,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45476190476190476 [2024-06-20 16:16:23,870 INFO L175 Difference]: Start difference. First operand has 194 places, 256 transitions, 3553 flow. Second operand 10 states and 191 transitions. [2024-06-20 16:16:23,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 290 transitions, 4285 flow [2024-06-20 16:16:24,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 290 transitions, 4097 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-20 16:16:24,247 INFO L231 Difference]: Finished difference. Result has 198 places, 256 transitions, 3580 flow [2024-06-20 16:16:24,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3365, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3580, PETRI_PLACES=198, PETRI_TRANSITIONS=256} [2024-06-20 16:16:24,248 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 155 predicate places. [2024-06-20 16:16:24,248 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 256 transitions, 3580 flow [2024-06-20 16:16:24,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:16:24,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:16:24,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:16:24,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-20 16:16:24,248 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)] === [2024-06-20 16:16:24,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:16:24,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1376827472, now seen corresponding path program 10 times [2024-06-20 16:16:24,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:16:24,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5369587] [2024-06-20 16:16:24,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:16:24,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:16:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:16:25,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:16:25,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:16:25,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5369587] [2024-06-20 16:16:25,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5369587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:16:25,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:16:25,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:16:25,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594502742] [2024-06-20 16:16:25,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:16:25,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:16:25,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:16:25,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:16:25,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:16:25,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:16:25,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 256 transitions, 3580 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) [2024-06-20 16:16:25,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:16:25,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:16:25,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:16:26,587 INFO L124 PetriNetUnfolderBase]: 3030/4854 cut-off events. [2024-06-20 16:16:26,588 INFO L125 PetriNetUnfolderBase]: For 368705/368709 co-relation queries the response was YES. [2024-06-20 16:16:26,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42743 conditions, 4854 events. 3030/4854 cut-off events. For 368705/368709 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 28333 event pairs, 721 based on Foata normal form. 20/4871 useless extension candidates. Maximal degree in co-relation 42657. Up to 4379 conditions per place. [2024-06-20 16:16:26,639 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 228 selfloop transitions, 54 changer transitions 0/290 dead transitions. [2024-06-20 16:16:26,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 290 transitions, 4312 flow [2024-06-20 16:16:26,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:16:26,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:16:26,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-20 16:16:26,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-20 16:16:26,640 INFO L175 Difference]: Start difference. First operand has 198 places, 256 transitions, 3580 flow. Second operand 10 states and 189 transitions. [2024-06-20 16:16:26,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 290 transitions, 4312 flow [2024-06-20 16:16:27,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 290 transitions, 4105 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-20 16:16:27,061 INFO L231 Difference]: Finished difference. Result has 200 places, 256 transitions, 3488 flow [2024-06-20 16:16:27,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3373, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3488, PETRI_PLACES=200, PETRI_TRANSITIONS=256} [2024-06-20 16:16:27,061 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 157 predicate places. [2024-06-20 16:16:27,061 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 256 transitions, 3488 flow [2024-06-20 16:16:27,062 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) [2024-06-20 16:16:27,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:16:27,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:16:27,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-20 16:16:27,062 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)] === [2024-06-20 16:16:27,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:16:27,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1026187540, now seen corresponding path program 11 times [2024-06-20 16:16:27,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:16:27,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049282654] [2024-06-20 16:16:27,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:16:27,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:16:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:16:28,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:16:28,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:16:28,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049282654] [2024-06-20 16:16:28,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049282654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:16:28,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:16:28,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:16:28,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351458681] [2024-06-20 16:16:28,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:16:28,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:16:28,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:16:28,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:16:28,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:16:28,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:16:28,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 256 transitions, 3488 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) [2024-06-20 16:16:28,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:16:28,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:16:28,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:16:29,240 INFO L124 PetriNetUnfolderBase]: 3064/4925 cut-off events. [2024-06-20 16:16:29,240 INFO L125 PetriNetUnfolderBase]: For 380838/380838 co-relation queries the response was YES. [2024-06-20 16:16:29,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43491 conditions, 4925 events. 3064/4925 cut-off events. For 380838/380838 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 28979 event pairs, 712 based on Foata normal form. 12/4933 useless extension candidates. Maximal degree in co-relation 43404. Up to 4083 conditions per place. [2024-06-20 16:16:29,284 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 145 selfloop transitions, 141 changer transitions 0/294 dead transitions. [2024-06-20 16:16:29,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 294 transitions, 4333 flow [2024-06-20 16:16:29,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:16:29,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:16:29,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-20 16:16:29,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2024-06-20 16:16:29,286 INFO L175 Difference]: Start difference. First operand has 200 places, 256 transitions, 3488 flow. Second operand 10 states and 194 transitions. [2024-06-20 16:16:29,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 294 transitions, 4333 flow [2024-06-20 16:16:29,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 294 transitions, 4204 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-20 16:16:29,619 INFO L231 Difference]: Finished difference. Result has 202 places, 257 transitions, 3716 flow [2024-06-20 16:16:29,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3359, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3716, PETRI_PLACES=202, PETRI_TRANSITIONS=257} [2024-06-20 16:16:29,620 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 159 predicate places. [2024-06-20 16:16:29,620 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 257 transitions, 3716 flow [2024-06-20 16:16:29,620 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) [2024-06-20 16:16:29,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:16:29,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:16:29,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-20 16:16:29,621 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)] === [2024-06-20 16:16:29,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:16:29,621 INFO L85 PathProgramCache]: Analyzing trace with hash 242310892, now seen corresponding path program 12 times [2024-06-20 16:16:29,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:16:29,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030082143] [2024-06-20 16:16:29,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:16:29,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:16:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:16:30,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:16:30,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:16:30,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030082143] [2024-06-20 16:16:30,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030082143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:16:30,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:16:30,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:16:30,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351028922] [2024-06-20 16:16:30,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:16:30,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:16:30,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:16:30,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:16:30,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:16:30,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:16:30,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 257 transitions, 3716 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) [2024-06-20 16:16:30,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:16:30,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:16:30,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:16:32,042 INFO L124 PetriNetUnfolderBase]: 3044/4893 cut-off events. [2024-06-20 16:16:32,042 INFO L125 PetriNetUnfolderBase]: For 379106/379106 co-relation queries the response was YES. [2024-06-20 16:16:32,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43043 conditions, 4893 events. 3044/4893 cut-off events. For 379106/379106 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 28753 event pairs, 741 based on Foata normal form. 12/4901 useless extension candidates. Maximal degree in co-relation 42955. Up to 3989 conditions per place. [2024-06-20 16:16:32,091 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 178 selfloop transitions, 108 changer transitions 0/294 dead transitions. [2024-06-20 16:16:32,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 294 transitions, 4494 flow [2024-06-20 16:16:32,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:16:32,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:16:32,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-20 16:16:32,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2024-06-20 16:16:32,093 INFO L175 Difference]: Start difference. First operand has 202 places, 257 transitions, 3716 flow. Second operand 10 states and 194 transitions. [2024-06-20 16:16:32,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 294 transitions, 4494 flow [2024-06-20 16:16:32,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 294 transitions, 4152 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-20 16:16:32,545 INFO L231 Difference]: Finished difference. Result has 204 places, 257 transitions, 3596 flow [2024-06-20 16:16:32,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3374, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3596, PETRI_PLACES=204, PETRI_TRANSITIONS=257} [2024-06-20 16:16:32,545 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 161 predicate places. [2024-06-20 16:16:32,545 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 257 transitions, 3596 flow [2024-06-20 16:16:32,545 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) [2024-06-20 16:16:32,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:16:32,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:16:32,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-20 16:16:32,546 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:16:32,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:16:32,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1505414524, now seen corresponding path program 2 times [2024-06-20 16:16:32,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:16:32,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673796257] [2024-06-20 16:16:32,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:16:32,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:16:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:16:33,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:16:33,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:16:33,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673796257] [2024-06-20 16:16:33,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673796257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:16:33,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:16:33,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:16:33,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493632660] [2024-06-20 16:16:33,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:16:33,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:16:33,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:16:33,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:16:33,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:16:33,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:16:33,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 257 transitions, 3596 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:16:33,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:16:33,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:16:33,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:16:34,329 INFO L124 PetriNetUnfolderBase]: 3155/5010 cut-off events. [2024-06-20 16:16:34,330 INFO L125 PetriNetUnfolderBase]: For 375959/375959 co-relation queries the response was YES. [2024-06-20 16:16:34,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43509 conditions, 5010 events. 3155/5010 cut-off events. For 375959/375959 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 29066 event pairs, 744 based on Foata normal form. 2/5008 useless extension candidates. Maximal degree in co-relation 43421. Up to 4755 conditions per place. [2024-06-20 16:16:34,379 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 221 selfloop transitions, 48 changer transitions 0/273 dead transitions. [2024-06-20 16:16:34,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 273 transitions, 4350 flow [2024-06-20 16:16:34,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:16:34,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:16:34,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-20 16:16:34,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41836734693877553 [2024-06-20 16:16:34,380 INFO L175 Difference]: Start difference. First operand has 204 places, 257 transitions, 3596 flow. Second operand 7 states and 123 transitions. [2024-06-20 16:16:34,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 273 transitions, 4350 flow [2024-06-20 16:16:34,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 273 transitions, 4030 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-20 16:16:34,751 INFO L231 Difference]: Finished difference. Result has 202 places, 260 transitions, 3434 flow [2024-06-20 16:16:34,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3276, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3434, PETRI_PLACES=202, PETRI_TRANSITIONS=260} [2024-06-20 16:16:34,752 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 159 predicate places. [2024-06-20 16:16:34,752 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 260 transitions, 3434 flow [2024-06-20 16:16:34,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:16:34,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:16:34,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:16:34,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-20 16:16:34,752 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:16:34,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:16:34,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1505830234, now seen corresponding path program 3 times [2024-06-20 16:16:34,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:16:34,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751607335] [2024-06-20 16:16:34,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:16:34,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:16:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:16:35,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:16:35,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:16:35,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751607335] [2024-06-20 16:16:35,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751607335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:16:35,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:16:35,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:16:35,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2927697] [2024-06-20 16:16:35,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:16:35,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:16:35,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:16:35,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:16:35,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:16:35,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:16:35,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 260 transitions, 3434 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:16:35,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:16:35,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:16:35,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:16:36,456 INFO L124 PetriNetUnfolderBase]: 3149/5002 cut-off events. [2024-06-20 16:16:36,456 INFO L125 PetriNetUnfolderBase]: For 380635/380635 co-relation queries the response was YES. [2024-06-20 16:16:36,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42846 conditions, 5002 events. 3149/5002 cut-off events. For 380635/380635 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 28996 event pairs, 743 based on Foata normal form. 2/5000 useless extension candidates. Maximal degree in co-relation 42758. Up to 4750 conditions per place. [2024-06-20 16:16:36,507 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 219 selfloop transitions, 49 changer transitions 0/272 dead transitions. [2024-06-20 16:16:36,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 272 transitions, 4026 flow [2024-06-20 16:16:36,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:16:36,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:16:36,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-20 16:16:36,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41156462585034015 [2024-06-20 16:16:36,509 INFO L175 Difference]: Start difference. First operand has 202 places, 260 transitions, 3434 flow. Second operand 7 states and 121 transitions. [2024-06-20 16:16:36,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 272 transitions, 4026 flow [2024-06-20 16:16:36,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 272 transitions, 3821 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-20 16:16:36,914 INFO L231 Difference]: Finished difference. Result has 204 places, 260 transitions, 3333 flow [2024-06-20 16:16:36,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3229, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3333, PETRI_PLACES=204, PETRI_TRANSITIONS=260} [2024-06-20 16:16:36,915 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 161 predicate places. [2024-06-20 16:16:36,915 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 260 transitions, 3333 flow [2024-06-20 16:16:36,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:16:36,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:16:36,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:16:36,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-20 16:16:36,916 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:16:36,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:16:36,916 INFO L85 PathProgramCache]: Analyzing trace with hash 636128058, now seen corresponding path program 1 times [2024-06-20 16:16:36,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:16:36,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581513038] [2024-06-20 16:16:36,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:16:36,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:16:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:16:37,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:16:37,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:16:37,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581513038] [2024-06-20 16:16:37,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581513038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:16:37,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:16:37,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:16:37,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061639406] [2024-06-20 16:16:37,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:16:37,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:16:37,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:16:37,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:16:37,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:16:37,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:16:37,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 260 transitions, 3333 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:16:37,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:16:37,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:16:37,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:16:38,529 INFO L124 PetriNetUnfolderBase]: 2847/4679 cut-off events. [2024-06-20 16:16:38,529 INFO L125 PetriNetUnfolderBase]: For 343939/343939 co-relation queries the response was YES. [2024-06-20 16:16:38,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39370 conditions, 4679 events. 2847/4679 cut-off events. For 343939/343939 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 28281 event pairs, 664 based on Foata normal form. 1/4678 useless extension candidates. Maximal degree in co-relation 39281. Up to 4365 conditions per place. [2024-06-20 16:16:38,577 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 253 selfloop transitions, 15 changer transitions 0/278 dead transitions. [2024-06-20 16:16:38,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 278 transitions, 3965 flow [2024-06-20 16:16:38,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:16:38,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:16:38,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-20 16:16:38,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2024-06-20 16:16:38,578 INFO L175 Difference]: Start difference. First operand has 204 places, 260 transitions, 3333 flow. Second operand 7 states and 132 transitions. [2024-06-20 16:16:38,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 278 transitions, 3965 flow [2024-06-20 16:16:38,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 278 transitions, 3859 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-20 16:16:39,000 INFO L231 Difference]: Finished difference. Result has 205 places, 263 transitions, 3315 flow [2024-06-20 16:16:39,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3227, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3315, PETRI_PLACES=205, PETRI_TRANSITIONS=263} [2024-06-20 16:16:39,001 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 162 predicate places. [2024-06-20 16:16:39,001 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 263 transitions, 3315 flow [2024-06-20 16:16:39,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:16:39,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:16:39,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:16:39,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-20 16:16:39,001 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:16:39,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:16:39,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1328467516, now seen corresponding path program 1 times [2024-06-20 16:16:39,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:16:39,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684226294] [2024-06-20 16:16:39,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:16:39,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:16:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:16:39,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:16:39,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:16:39,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684226294] [2024-06-20 16:16:39,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684226294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:16:39,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:16:39,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:16:39,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490342634] [2024-06-20 16:16:39,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:16:39,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:16:39,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:16:39,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:16:39,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:16:39,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:16:39,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 263 transitions, 3315 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:16:39,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:16:39,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:16:39,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:16:40,578 INFO L124 PetriNetUnfolderBase]: 2955/4789 cut-off events. [2024-06-20 16:16:40,578 INFO L125 PetriNetUnfolderBase]: For 352859/352859 co-relation queries the response was YES. [2024-06-20 16:16:40,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40378 conditions, 4789 events. 2955/4789 cut-off events. For 352859/352859 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 28362 event pairs, 698 based on Foata normal form. 1/4788 useless extension candidates. Maximal degree in co-relation 40288. Up to 4559 conditions per place. [2024-06-20 16:16:40,630 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 253 selfloop transitions, 24 changer transitions 0/282 dead transitions. [2024-06-20 16:16:40,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 282 transitions, 4089 flow [2024-06-20 16:16:40,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:16:40,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:16:40,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-20 16:16:40,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43537414965986393 [2024-06-20 16:16:40,632 INFO L175 Difference]: Start difference. First operand has 205 places, 263 transitions, 3315 flow. Second operand 7 states and 128 transitions. [2024-06-20 16:16:40,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 282 transitions, 4089 flow [2024-06-20 16:16:40,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 282 transitions, 4023 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-20 16:16:41,003 INFO L231 Difference]: Finished difference. Result has 207 places, 269 transitions, 3381 flow [2024-06-20 16:16:41,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3249, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3381, PETRI_PLACES=207, PETRI_TRANSITIONS=269} [2024-06-20 16:16:41,003 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 164 predicate places. [2024-06-20 16:16:41,004 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 269 transitions, 3381 flow [2024-06-20 16:16:41,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:16:41,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:16:41,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:16:41,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-20 16:16:41,004 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:16:41,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:16:41,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1411890348, now seen corresponding path program 2 times [2024-06-20 16:16:41,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:16:41,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483239034] [2024-06-20 16:16:41,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:16:41,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:16:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:16:41,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:16:41,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:16:41,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483239034] [2024-06-20 16:16:41,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483239034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:16:41,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:16:41,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:16:41,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631299569] [2024-06-20 16:16:41,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:16:41,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:16:41,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:16:41,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:16:41,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:16:41,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:16:41,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 269 transitions, 3381 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:16:41,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:16:41,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:16:41,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:16:42,614 INFO L124 PetriNetUnfolderBase]: 2867/4703 cut-off events. [2024-06-20 16:16:42,614 INFO L125 PetriNetUnfolderBase]: For 364374/364374 co-relation queries the response was YES. [2024-06-20 16:16:42,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40322 conditions, 4703 events. 2867/4703 cut-off events. For 364374/364374 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 28310 event pairs, 664 based on Foata normal form. 1/4702 useless extension candidates. Maximal degree in co-relation 40231. Up to 4371 conditions per place. [2024-06-20 16:16:42,661 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 249 selfloop transitions, 27 changer transitions 0/288 dead transitions. [2024-06-20 16:16:42,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 288 transitions, 4191 flow [2024-06-20 16:16:42,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:16:42,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:16:42,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-20 16:16:42,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557823129251701 [2024-06-20 16:16:42,662 INFO L175 Difference]: Start difference. First operand has 207 places, 269 transitions, 3381 flow. Second operand 7 states and 134 transitions. [2024-06-20 16:16:42,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 288 transitions, 4191 flow [2024-06-20 16:16:43,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 288 transitions, 4140 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-20 16:16:43,082 INFO L231 Difference]: Finished difference. Result has 211 places, 275 transitions, 3504 flow [2024-06-20 16:16:43,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3330, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3504, PETRI_PLACES=211, PETRI_TRANSITIONS=275} [2024-06-20 16:16:43,082 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 168 predicate places. [2024-06-20 16:16:43,082 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 275 transitions, 3504 flow [2024-06-20 16:16:43,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:16:43,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:16:43,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:16:43,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-20 16:16:43,083 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:16:43,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:16:43,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1612259034, now seen corresponding path program 2 times [2024-06-20 16:16:43,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:16:43,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469094231] [2024-06-20 16:16:43,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:16:43,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:16:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:16:43,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:16:43,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:16:43,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469094231] [2024-06-20 16:16:43,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469094231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:16:43,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:16:43,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:16:43,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784812892] [2024-06-20 16:16:43,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:16:43,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:16:43,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:16:43,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:16:43,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:16:43,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:16:43,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 275 transitions, 3504 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:16:43,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:16:43,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:16:43,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:16:44,732 INFO L124 PetriNetUnfolderBase]: 2965/4803 cut-off events. [2024-06-20 16:16:44,732 INFO L125 PetriNetUnfolderBase]: For 375647/375647 co-relation queries the response was YES. [2024-06-20 16:16:44,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41411 conditions, 4803 events. 2965/4803 cut-off events. For 375647/375647 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 28442 event pairs, 696 based on Foata normal form. 1/4802 useless extension candidates. Maximal degree in co-relation 41318. Up to 4587 conditions per place. [2024-06-20 16:16:44,778 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 263 selfloop transitions, 20 changer transitions 0/288 dead transitions. [2024-06-20 16:16:44,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 288 transitions, 4246 flow [2024-06-20 16:16:44,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:16:44,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:16:44,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-20 16:16:44,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41836734693877553 [2024-06-20 16:16:44,780 INFO L175 Difference]: Start difference. First operand has 211 places, 275 transitions, 3504 flow. Second operand 7 states and 123 transitions. [2024-06-20 16:16:44,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 288 transitions, 4246 flow [2024-06-20 16:16:45,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 288 transitions, 4177 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-20 16:16:45,239 INFO L231 Difference]: Finished difference. Result has 215 places, 278 transitions, 3517 flow [2024-06-20 16:16:45,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3435, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3517, PETRI_PLACES=215, PETRI_TRANSITIONS=278} [2024-06-20 16:16:45,239 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 172 predicate places. [2024-06-20 16:16:45,240 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 278 transitions, 3517 flow [2024-06-20 16:16:45,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:16:45,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:16:45,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:16:45,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-20 16:16:45,240 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:16:45,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:16:45,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1505836186, now seen corresponding path program 3 times [2024-06-20 16:16:45,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:16:45,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825734439] [2024-06-20 16:16:45,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:16:45,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:16:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:16:45,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:16:45,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:16:45,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825734439] [2024-06-20 16:16:45,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825734439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:16:45,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:16:45,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:16:45,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65060915] [2024-06-20 16:16:45,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:16:45,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:16:45,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:16:45,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:16:45,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:16:45,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:16:45,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 278 transitions, 3517 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:16:45,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:16:45,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:16:45,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:16:46,840 INFO L124 PetriNetUnfolderBase]: 2962/4799 cut-off events. [2024-06-20 16:16:46,840 INFO L125 PetriNetUnfolderBase]: For 383956/383956 co-relation queries the response was YES. [2024-06-20 16:16:46,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41507 conditions, 4799 events. 2962/4799 cut-off events. For 383956/383956 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 28383 event pairs, 696 based on Foata normal form. 1/4798 useless extension candidates. Maximal degree in co-relation 41412. Up to 4590 conditions per place. [2024-06-20 16:16:46,891 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 267 selfloop transitions, 15 changer transitions 0/287 dead transitions. [2024-06-20 16:16:46,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 287 transitions, 4107 flow [2024-06-20 16:16:46,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:16:46,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:16:46,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-20 16:16:46,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2024-06-20 16:16:46,892 INFO L175 Difference]: Start difference. First operand has 215 places, 278 transitions, 3517 flow. Second operand 7 states and 120 transitions. [2024-06-20 16:16:46,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 287 transitions, 4107 flow [2024-06-20 16:16:47,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 287 transitions, 4021 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-20 16:16:47,361 INFO L231 Difference]: Finished difference. Result has 217 places, 278 transitions, 3467 flow [2024-06-20 16:16:47,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3431, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3467, PETRI_PLACES=217, PETRI_TRANSITIONS=278} [2024-06-20 16:16:47,362 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 174 predicate places. [2024-06-20 16:16:47,362 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 278 transitions, 3467 flow [2024-06-20 16:16:47,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:16:47,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:16:47,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:16:47,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-20 16:16:47,363 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:16:47,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:16:47,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1505598850, now seen corresponding path program 3 times [2024-06-20 16:16:47,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:16:47,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370547292] [2024-06-20 16:16:47,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:16:47,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:16:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:16:48,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:16:48,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:16:48,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370547292] [2024-06-20 16:16:48,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370547292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:16:48,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:16:48,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:16:48,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235394693] [2024-06-20 16:16:48,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:16:48,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:16:48,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:16:48,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:16:48,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:16:48,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:16:48,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 278 transitions, 3467 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:16:48,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:16:48,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:16:48,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:16:49,042 INFO L124 PetriNetUnfolderBase]: 2866/4702 cut-off events. [2024-06-20 16:16:49,042 INFO L125 PetriNetUnfolderBase]: For 392730/392730 co-relation queries the response was YES. [2024-06-20 16:16:49,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40960 conditions, 4702 events. 2866/4702 cut-off events. For 392730/392730 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 28291 event pairs, 663 based on Foata normal form. 1/4701 useless extension candidates. Maximal degree in co-relation 40864. Up to 4397 conditions per place. [2024-06-20 16:16:49,088 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 259 selfloop transitions, 15 changer transitions 0/287 dead transitions. [2024-06-20 16:16:49,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 287 transitions, 4041 flow [2024-06-20 16:16:49,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:16:49,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:16:49,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-20 16:16:49,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-20 16:16:49,090 INFO L175 Difference]: Start difference. First operand has 217 places, 278 transitions, 3467 flow. Second operand 7 states and 126 transitions. [2024-06-20 16:16:49,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 287 transitions, 4041 flow [2024-06-20 16:16:49,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 287 transitions, 3969 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-20 16:16:49,568 INFO L231 Difference]: Finished difference. Result has 218 places, 278 transitions, 3431 flow [2024-06-20 16:16:49,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3395, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3431, PETRI_PLACES=218, PETRI_TRANSITIONS=278} [2024-06-20 16:16:49,569 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 175 predicate places. [2024-06-20 16:16:49,569 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 278 transitions, 3431 flow [2024-06-20 16:16:49,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:16:49,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:16:49,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:16:49,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-20 16:16:49,570 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)] === [2024-06-20 16:16:49,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:16:49,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1822925193, now seen corresponding path program 1 times [2024-06-20 16:16:49,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:16:49,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707379008] [2024-06-20 16:16:49,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:16:49,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:16:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:16:50,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:16:50,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:16:50,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707379008] [2024-06-20 16:16:50,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707379008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:16:50,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:16:50,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:16:50,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868071017] [2024-06-20 16:16:50,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:16:50,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:16:50,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:16:50,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:16:50,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:16:51,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:16:51,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 278 transitions, 3431 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:16:51,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:16:51,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:16:51,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:16:52,285 INFO L124 PetriNetUnfolderBase]: 3135/5036 cut-off events. [2024-06-20 16:16:52,285 INFO L125 PetriNetUnfolderBase]: For 480859/480861 co-relation queries the response was YES. [2024-06-20 16:16:52,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45148 conditions, 5036 events. 3135/5036 cut-off events. For 480859/480861 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 29766 event pairs, 654 based on Foata normal form. 14/5048 useless extension candidates. Maximal degree in co-relation 45051. Up to 4552 conditions per place. [2024-06-20 16:16:52,340 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 240 selfloop transitions, 67 changer transitions 0/319 dead transitions. [2024-06-20 16:16:52,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 319 transitions, 4263 flow [2024-06-20 16:16:52,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:16:52,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:16:52,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-20 16:16:52,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-20 16:16:52,342 INFO L175 Difference]: Start difference. First operand has 218 places, 278 transitions, 3431 flow. Second operand 10 states and 188 transitions. [2024-06-20 16:16:52,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 319 transitions, 4263 flow [2024-06-20 16:16:52,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 319 transitions, 4215 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-20 16:16:52,955 INFO L231 Difference]: Finished difference. Result has 223 places, 281 transitions, 3607 flow [2024-06-20 16:16:52,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3383, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3607, PETRI_PLACES=223, PETRI_TRANSITIONS=281} [2024-06-20 16:16:52,957 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 180 predicate places. [2024-06-20 16:16:52,957 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 281 transitions, 3607 flow [2024-06-20 16:16:52,961 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) [2024-06-20 16:16:52,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:16:52,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:16:52,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-20 16:16:52,962 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)] === [2024-06-20 16:16:52,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:16:52,962 INFO L85 PathProgramCache]: Analyzing trace with hash 657489035, now seen corresponding path program 2 times [2024-06-20 16:16:52,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:16:52,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770398870] [2024-06-20 16:16:52,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:16:52,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:16:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:16:54,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:16:54,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:16:54,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770398870] [2024-06-20 16:16:54,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770398870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:16:54,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:16:54,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:16:54,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305475915] [2024-06-20 16:16:54,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:16:54,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:16:54,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:16:54,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:16:54,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:16:54,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:16:54,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 281 transitions, 3607 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) [2024-06-20 16:16:54,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:16:54,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:16:54,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:16:55,410 INFO L124 PetriNetUnfolderBase]: 3176/5107 cut-off events. [2024-06-20 16:16:55,410 INFO L125 PetriNetUnfolderBase]: For 495463/495465 co-relation queries the response was YES. [2024-06-20 16:16:55,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46294 conditions, 5107 events. 3176/5107 cut-off events. For 495463/495465 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 30313 event pairs, 701 based on Foata normal form. 14/5119 useless extension candidates. Maximal degree in co-relation 46195. Up to 4563 conditions per place. [2024-06-20 16:16:55,468 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 241 selfloop transitions, 70 changer transitions 0/323 dead transitions. [2024-06-20 16:16:55,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 323 transitions, 4460 flow [2024-06-20 16:16:55,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:16:55,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:16:55,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-20 16:16:55,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-20 16:16:55,469 INFO L175 Difference]: Start difference. First operand has 223 places, 281 transitions, 3607 flow. Second operand 10 states and 190 transitions. [2024-06-20 16:16:55,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 323 transitions, 4460 flow [2024-06-20 16:16:55,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 323 transitions, 4298 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-20 16:16:55,941 INFO L231 Difference]: Finished difference. Result has 227 places, 284 transitions, 3692 flow [2024-06-20 16:16:55,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3445, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3692, PETRI_PLACES=227, PETRI_TRANSITIONS=284} [2024-06-20 16:16:55,942 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 184 predicate places. [2024-06-20 16:16:55,942 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 284 transitions, 3692 flow [2024-06-20 16:16:55,943 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) [2024-06-20 16:16:55,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:16:55,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:16:55,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-20 16:16:55,943 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)] === [2024-06-20 16:16:55,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:16:55,944 INFO L85 PathProgramCache]: Analyzing trace with hash -2088049525, now seen corresponding path program 3 times [2024-06-20 16:16:55,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:16:55,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504250421] [2024-06-20 16:16:55,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:16:55,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:16:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:16:57,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:16:57,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:16:57,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504250421] [2024-06-20 16:16:57,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504250421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:16:57,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:16:57,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:16:57,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892059928] [2024-06-20 16:16:57,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:16:57,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:16:57,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:16:57,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:16:57,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:16:57,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:16:57,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 284 transitions, 3692 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) [2024-06-20 16:16:57,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:16:57,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:16:57,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:16:58,746 INFO L124 PetriNetUnfolderBase]: 3216/5175 cut-off events. [2024-06-20 16:16:58,747 INFO L125 PetriNetUnfolderBase]: For 514584/514604 co-relation queries the response was YES. [2024-06-20 16:16:58,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47157 conditions, 5175 events. 3216/5175 cut-off events. For 514584/514604 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 30802 event pairs, 612 based on Foata normal form. 14/5183 useless extension candidates. Maximal degree in co-relation 47056. Up to 4717 conditions per place. [2024-06-20 16:16:58,800 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 273 selfloop transitions, 42 changer transitions 0/327 dead transitions. [2024-06-20 16:16:58,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 327 transitions, 4556 flow [2024-06-20 16:16:58,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:16:58,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:16:58,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-20 16:16:58,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-20 16:16:58,802 INFO L175 Difference]: Start difference. First operand has 227 places, 284 transitions, 3692 flow. Second operand 10 states and 188 transitions. [2024-06-20 16:16:58,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 327 transitions, 4556 flow [2024-06-20 16:16:59,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 327 transitions, 4366 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-20 16:16:59,248 INFO L231 Difference]: Finished difference. Result has 231 places, 287 transitions, 3681 flow [2024-06-20 16:16:59,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3502, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3681, PETRI_PLACES=231, PETRI_TRANSITIONS=287} [2024-06-20 16:16:59,249 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 188 predicate places. [2024-06-20 16:16:59,249 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 287 transitions, 3681 flow [2024-06-20 16:16:59,249 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) [2024-06-20 16:16:59,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:16:59,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:16:59,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-20 16:16:59,249 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:16:59,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:16:59,250 INFO L85 PathProgramCache]: Analyzing trace with hash -216846291, now seen corresponding path program 4 times [2024-06-20 16:16:59,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:16:59,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021751276] [2024-06-20 16:16:59,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:16:59,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:16:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:17:00,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:17:00,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:17:00,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021751276] [2024-06-20 16:17:00,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021751276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:17:00,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:17:00,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:17:00,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790071640] [2024-06-20 16:17:00,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:17:00,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:17:00,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:17:00,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:17:00,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:17:00,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:17:00,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 287 transitions, 3681 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) [2024-06-20 16:17:00,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:17:00,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:17:00,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:17:01,905 INFO L124 PetriNetUnfolderBase]: 3258/5249 cut-off events. [2024-06-20 16:17:01,906 INFO L125 PetriNetUnfolderBase]: For 533261/533263 co-relation queries the response was YES. [2024-06-20 16:17:01,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47850 conditions, 5249 events. 3258/5249 cut-off events. For 533261/533263 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 31356 event pairs, 754 based on Foata normal form. 14/5261 useless extension candidates. Maximal degree in co-relation 47747. Up to 4809 conditions per place. [2024-06-20 16:17:01,965 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 280 selfloop transitions, 36 changer transitions 0/328 dead transitions. [2024-06-20 16:17:01,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 328 transitions, 4549 flow [2024-06-20 16:17:01,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:17:01,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:17:01,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-20 16:17:01,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-20 16:17:01,967 INFO L175 Difference]: Start difference. First operand has 231 places, 287 transitions, 3681 flow. Second operand 10 states and 188 transitions. [2024-06-20 16:17:01,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 328 transitions, 4549 flow [2024-06-20 16:17:02,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 328 transitions, 4415 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-20 16:17:02,524 INFO L231 Difference]: Finished difference. Result has 235 places, 291 transitions, 3728 flow [2024-06-20 16:17:02,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3547, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3728, PETRI_PLACES=235, PETRI_TRANSITIONS=291} [2024-06-20 16:17:02,528 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 192 predicate places. [2024-06-20 16:17:02,529 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 291 transitions, 3728 flow [2024-06-20 16:17:02,529 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) [2024-06-20 16:17:02,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:17:02,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:17:02,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-20 16:17:02,529 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:17:02,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:17:02,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1320237659, now seen corresponding path program 1 times [2024-06-20 16:17:02,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:17:02,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632343081] [2024-06-20 16:17:02,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:17:02,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:17:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:17:03,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:17:03,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:17:03,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632343081] [2024-06-20 16:17:03,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632343081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:17:03,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:17:03,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:17:03,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769390024] [2024-06-20 16:17:03,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:17:03,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:17:03,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:17:03,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:17:03,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:17:03,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:17:03,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 291 transitions, 3728 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:03,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:17:03,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:17:03,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:17:04,336 INFO L124 PetriNetUnfolderBase]: 3284/5287 cut-off events. [2024-06-20 16:17:04,336 INFO L125 PetriNetUnfolderBase]: For 535912/535914 co-relation queries the response was YES. [2024-06-20 16:17:04,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48364 conditions, 5287 events. 3284/5287 cut-off events. For 535912/535914 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 31653 event pairs, 778 based on Foata normal form. 4/5289 useless extension candidates. Maximal degree in co-relation 48259. Up to 4973 conditions per place. [2024-06-20 16:17:04,396 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 279 selfloop transitions, 31 changer transitions 0/322 dead transitions. [2024-06-20 16:17:04,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 322 transitions, 4716 flow [2024-06-20 16:17:04,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:17:04,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:17:04,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-20 16:17:04,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2024-06-20 16:17:04,400 INFO L175 Difference]: Start difference. First operand has 235 places, 291 transitions, 3728 flow. Second operand 7 states and 135 transitions. [2024-06-20 16:17:04,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 322 transitions, 4716 flow [2024-06-20 16:17:05,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 322 transitions, 4588 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-20 16:17:05,050 INFO L231 Difference]: Finished difference. Result has 236 places, 302 transitions, 3864 flow [2024-06-20 16:17:05,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3600, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3864, PETRI_PLACES=236, PETRI_TRANSITIONS=302} [2024-06-20 16:17:05,052 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 193 predicate places. [2024-06-20 16:17:05,053 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 302 transitions, 3864 flow [2024-06-20 16:17:05,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:05,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:17:05,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:17:05,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-20 16:17:05,053 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:17:05,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:17:05,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1325951579, now seen corresponding path program 2 times [2024-06-20 16:17:05,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:17:05,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912181102] [2024-06-20 16:17:05,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:17:05,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:17:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:17:05,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:17:05,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:17:05,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912181102] [2024-06-20 16:17:05,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912181102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:17:05,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:17:05,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:17:05,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282047743] [2024-06-20 16:17:05,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:17:05,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:17:05,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:17:05,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:17:05,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:17:05,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:17:05,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 302 transitions, 3864 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:05,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:17:05,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:17:05,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:17:06,933 INFO L124 PetriNetUnfolderBase]: 3292/5303 cut-off events. [2024-06-20 16:17:06,933 INFO L125 PetriNetUnfolderBase]: For 550250/550252 co-relation queries the response was YES. [2024-06-20 16:17:06,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48963 conditions, 5303 events. 3292/5303 cut-off events. For 550250/550252 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 31755 event pairs, 778 based on Foata normal form. 4/5305 useless extension candidates. Maximal degree in co-relation 48856. Up to 5026 conditions per place. [2024-06-20 16:17:06,997 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 282 selfloop transitions, 27 changer transitions 0/321 dead transitions. [2024-06-20 16:17:06,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 321 transitions, 4621 flow [2024-06-20 16:17:06,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:17:06,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:17:06,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-20 16:17:06,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4387755102040816 [2024-06-20 16:17:06,999 INFO L175 Difference]: Start difference. First operand has 236 places, 302 transitions, 3864 flow. Second operand 7 states and 129 transitions. [2024-06-20 16:17:06,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 321 transitions, 4621 flow [2024-06-20 16:17:07,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 321 transitions, 4498 flow, removed 57 selfloop flow, removed 2 redundant places. [2024-06-20 16:17:07,735 INFO L231 Difference]: Finished difference. Result has 241 places, 306 transitions, 3890 flow [2024-06-20 16:17:07,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3769, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3890, PETRI_PLACES=241, PETRI_TRANSITIONS=306} [2024-06-20 16:17:07,735 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 198 predicate places. [2024-06-20 16:17:07,735 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 306 transitions, 3890 flow [2024-06-20 16:17:07,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:07,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:17:07,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:17:07,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-20 16:17:07,736 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:17:07,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:17:07,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1325959515, now seen corresponding path program 1 times [2024-06-20 16:17:07,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:17:07,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731230821] [2024-06-20 16:17:07,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:17:07,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:17:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:17:08,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:17:08,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:17:08,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731230821] [2024-06-20 16:17:08,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731230821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:17:08,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:17:08,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:17:08,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741319328] [2024-06-20 16:17:08,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:17:08,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:17:08,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:17:08,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:17:08,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:17:08,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:17:08,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 306 transitions, 3890 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:08,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:17:08,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:17:08,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:17:09,876 INFO L124 PetriNetUnfolderBase]: 3390/5399 cut-off events. [2024-06-20 16:17:09,876 INFO L125 PetriNetUnfolderBase]: For 562912/562912 co-relation queries the response was YES. [2024-06-20 16:17:09,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49748 conditions, 5399 events. 3390/5399 cut-off events. For 562912/562912 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 31793 event pairs, 791 based on Foata normal form. 2/5399 useless extension candidates. Maximal degree in co-relation 49639. Up to 5117 conditions per place. [2024-06-20 16:17:09,937 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 272 selfloop transitions, 58 changer transitions 0/334 dead transitions. [2024-06-20 16:17:09,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 334 transitions, 4886 flow [2024-06-20 16:17:09,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:17:09,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:17:09,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-20 16:17:09,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-20 16:17:09,938 INFO L175 Difference]: Start difference. First operand has 241 places, 306 transitions, 3890 flow. Second operand 8 states and 144 transitions. [2024-06-20 16:17:09,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 334 transitions, 4886 flow [2024-06-20 16:17:10,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 334 transitions, 4804 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-20 16:17:10,722 INFO L231 Difference]: Finished difference. Result has 246 places, 315 transitions, 4073 flow [2024-06-20 16:17:10,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3808, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4073, PETRI_PLACES=246, PETRI_TRANSITIONS=315} [2024-06-20 16:17:10,723 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 203 predicate places. [2024-06-20 16:17:10,723 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 315 transitions, 4073 flow [2024-06-20 16:17:10,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:10,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:17:10,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:17:10,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-20 16:17:10,724 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)] === [2024-06-20 16:17:10,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:17:10,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1084967079, now seen corresponding path program 5 times [2024-06-20 16:17:10,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:17:10,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723003452] [2024-06-20 16:17:10,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:17:10,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:17:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:17:12,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:17:12,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:17:12,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723003452] [2024-06-20 16:17:12,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723003452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:17:12,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:17:12,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:17:12,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013030428] [2024-06-20 16:17:12,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:17:12,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:17:12,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:17:12,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:17:12,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:17:12,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:17:12,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 315 transitions, 4073 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) [2024-06-20 16:17:12,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:17:12,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:17:12,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:17:13,529 INFO L124 PetriNetUnfolderBase]: 3358/5414 cut-off events. [2024-06-20 16:17:13,530 INFO L125 PetriNetUnfolderBase]: For 600459/600467 co-relation queries the response was YES. [2024-06-20 16:17:13,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50609 conditions, 5414 events. 3358/5414 cut-off events. For 600459/600467 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 32589 event pairs, 781 based on Foata normal form. 16/5421 useless extension candidates. Maximal degree in co-relation 50498. Up to 4932 conditions per place. [2024-06-20 16:17:13,595 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 288 selfloop transitions, 52 changer transitions 0/352 dead transitions. [2024-06-20 16:17:13,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 352 transitions, 4959 flow [2024-06-20 16:17:13,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:17:13,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:17:13,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-20 16:17:13,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-20 16:17:13,597 INFO L175 Difference]: Start difference. First operand has 246 places, 315 transitions, 4073 flow. Second operand 10 states and 189 transitions. [2024-06-20 16:17:13,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 352 transitions, 4959 flow [2024-06-20 16:17:14,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 352 transitions, 4886 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-20 16:17:14,214 INFO L231 Difference]: Finished difference. Result has 254 places, 318 transitions, 4189 flow [2024-06-20 16:17:14,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4000, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4189, PETRI_PLACES=254, PETRI_TRANSITIONS=318} [2024-06-20 16:17:14,215 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 211 predicate places. [2024-06-20 16:17:14,215 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 318 transitions, 4189 flow [2024-06-20 16:17:14,215 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) [2024-06-20 16:17:14,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:17:14,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:17:14,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-20 16:17:14,216 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)] === [2024-06-20 16:17:14,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:17:14,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1255669509, now seen corresponding path program 6 times [2024-06-20 16:17:14,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:17:14,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248332035] [2024-06-20 16:17:14,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:17:14,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:17:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:17:15,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:17:15,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:17:15,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248332035] [2024-06-20 16:17:15,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248332035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:17:15,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:17:15,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:17:15,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310240261] [2024-06-20 16:17:15,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:17:15,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:17:15,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:17:15,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:17:15,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:17:15,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:17:15,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 318 transitions, 4189 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) [2024-06-20 16:17:15,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:17:15,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:17:15,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:17:16,862 INFO L124 PetriNetUnfolderBase]: 3338/5382 cut-off events. [2024-06-20 16:17:16,862 INFO L125 PetriNetUnfolderBase]: For 597606/597614 co-relation queries the response was YES. [2024-06-20 16:17:16,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50050 conditions, 5382 events. 3338/5382 cut-off events. For 597606/597614 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 32366 event pairs, 767 based on Foata normal form. 16/5389 useless extension candidates. Maximal degree in co-relation 49935. Up to 4900 conditions per place. [2024-06-20 16:17:16,927 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 288 selfloop transitions, 53 changer transitions 0/353 dead transitions. [2024-06-20 16:17:16,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 353 transitions, 5013 flow [2024-06-20 16:17:16,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:17:16,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:17:16,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-20 16:17:16,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-20 16:17:16,929 INFO L175 Difference]: Start difference. First operand has 254 places, 318 transitions, 4189 flow. Second operand 10 states and 188 transitions. [2024-06-20 16:17:16,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 353 transitions, 5013 flow [2024-06-20 16:17:17,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 353 transitions, 4868 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-20 16:17:17,477 INFO L231 Difference]: Finished difference. Result has 258 places, 319 transitions, 4167 flow [2024-06-20 16:17:17,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4044, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4167, PETRI_PLACES=258, PETRI_TRANSITIONS=319} [2024-06-20 16:17:17,478 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 215 predicate places. [2024-06-20 16:17:17,478 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 319 transitions, 4167 flow [2024-06-20 16:17:17,478 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) [2024-06-20 16:17:17,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:17:17,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:17:17,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-20 16:17:17,478 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)] === [2024-06-20 16:17:17,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:17:17,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1255784829, now seen corresponding path program 7 times [2024-06-20 16:17:17,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:17:17,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564670956] [2024-06-20 16:17:17,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:17:17,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:17:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:17:18,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:17:18,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:17:18,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564670956] [2024-06-20 16:17:18,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564670956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:17:18,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:17:18,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:17:18,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123086835] [2024-06-20 16:17:18,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:17:18,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:17:18,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:17:18,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:17:18,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:17:18,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:17:18,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 319 transitions, 4167 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) [2024-06-20 16:17:18,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:17:18,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:17:18,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:17:20,230 INFO L124 PetriNetUnfolderBase]: 3318/5350 cut-off events. [2024-06-20 16:17:20,230 INFO L125 PetriNetUnfolderBase]: For 588913/588921 co-relation queries the response was YES. [2024-06-20 16:17:20,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49050 conditions, 5350 events. 3318/5350 cut-off events. For 588913/588921 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 32153 event pairs, 733 based on Foata normal form. 16/5357 useless extension candidates. Maximal degree in co-relation 48933. Up to 4791 conditions per place. [2024-06-20 16:17:20,290 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 284 selfloop transitions, 60 changer transitions 0/356 dead transitions. [2024-06-20 16:17:20,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 356 transitions, 4929 flow [2024-06-20 16:17:20,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:17:20,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:17:20,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-20 16:17:20,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-20 16:17:20,291 INFO L175 Difference]: Start difference. First operand has 258 places, 319 transitions, 4167 flow. Second operand 10 states and 188 transitions. [2024-06-20 16:17:20,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 356 transitions, 4929 flow [2024-06-20 16:17:20,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 356 transitions, 4696 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-20 16:17:20,912 INFO L231 Difference]: Finished difference. Result has 259 places, 321 transitions, 4008 flow [2024-06-20 16:17:20,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3834, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4008, PETRI_PLACES=259, PETRI_TRANSITIONS=321} [2024-06-20 16:17:20,912 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 216 predicate places. [2024-06-20 16:17:20,913 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 321 transitions, 4008 flow [2024-06-20 16:17:20,913 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) [2024-06-20 16:17:20,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:17:20,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:17:20,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-20 16:17:20,913 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:17:20,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:17:20,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1778619813, now seen corresponding path program 3 times [2024-06-20 16:17:20,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:17:20,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454666962] [2024-06-20 16:17:20,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:17:20,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:17:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:17:21,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:17:21,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:17:21,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454666962] [2024-06-20 16:17:21,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454666962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:17:21,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:17:21,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:17:21,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547904517] [2024-06-20 16:17:21,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:17:21,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:17:21,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:17:21,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:17:21,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:17:21,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:17:21,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 321 transitions, 4008 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:21,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:17:21,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:17:21,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:17:22,739 INFO L124 PetriNetUnfolderBase]: 3336/5377 cut-off events. [2024-06-20 16:17:22,739 INFO L125 PetriNetUnfolderBase]: For 588950/588958 co-relation queries the response was YES. [2024-06-20 16:17:22,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49305 conditions, 5377 events. 3336/5377 cut-off events. For 588950/588958 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 32360 event pairs, 772 based on Foata normal form. 6/5374 useless extension candidates. Maximal degree in co-relation 49187. Up to 5000 conditions per place. [2024-06-20 16:17:22,809 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 286 selfloop transitions, 49 changer transitions 0/347 dead transitions. [2024-06-20 16:17:22,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 347 transitions, 5192 flow [2024-06-20 16:17:22,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:17:22,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:17:22,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-20 16:17:22,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2024-06-20 16:17:22,810 INFO L175 Difference]: Start difference. First operand has 259 places, 321 transitions, 4008 flow. Second operand 7 states and 135 transitions. [2024-06-20 16:17:22,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 347 transitions, 5192 flow [2024-06-20 16:17:23,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 347 transitions, 4907 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-20 16:17:23,514 INFO L231 Difference]: Finished difference. Result has 258 places, 327 transitions, 3982 flow [2024-06-20 16:17:23,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3723, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3982, PETRI_PLACES=258, PETRI_TRANSITIONS=327} [2024-06-20 16:17:23,515 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 215 predicate places. [2024-06-20 16:17:23,515 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 327 transitions, 3982 flow [2024-06-20 16:17:23,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:23,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:17:23,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:17:23,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-20 16:17:23,515 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:17:23,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:17:23,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1688062533, now seen corresponding path program 4 times [2024-06-20 16:17:23,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:17:23,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757836593] [2024-06-20 16:17:23,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:17:23,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:17:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:17:24,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:17:24,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:17:24,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757836593] [2024-06-20 16:17:24,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757836593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:17:24,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:17:24,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:17:24,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298022545] [2024-06-20 16:17:24,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:17:24,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:17:24,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:17:24,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:17:24,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:17:24,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:17:24,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 327 transitions, 3982 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:24,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:17:24,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:17:24,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:17:25,397 INFO L124 PetriNetUnfolderBase]: 3346/5392 cut-off events. [2024-06-20 16:17:25,397 INFO L125 PetriNetUnfolderBase]: For 603111/603115 co-relation queries the response was YES. [2024-06-20 16:17:25,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49185 conditions, 5392 events. 3346/5392 cut-off events. For 603111/603115 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 32439 event pairs, 771 based on Foata normal form. 6/5394 useless extension candidates. Maximal degree in co-relation 49067. Up to 5010 conditions per place. [2024-06-20 16:17:25,461 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 281 selfloop transitions, 53 changer transitions 0/346 dead transitions. [2024-06-20 16:17:25,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 346 transitions, 4946 flow [2024-06-20 16:17:25,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:17:25,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:17:25,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-20 16:17:25,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445578231292517 [2024-06-20 16:17:25,462 INFO L175 Difference]: Start difference. First operand has 258 places, 327 transitions, 3982 flow. Second operand 7 states and 131 transitions. [2024-06-20 16:17:25,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 346 transitions, 4946 flow [2024-06-20 16:17:26,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 346 transitions, 4754 flow, removed 73 selfloop flow, removed 3 redundant places. [2024-06-20 16:17:26,232 INFO L231 Difference]: Finished difference. Result has 262 places, 330 transitions, 3982 flow [2024-06-20 16:17:26,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3828, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3982, PETRI_PLACES=262, PETRI_TRANSITIONS=330} [2024-06-20 16:17:26,233 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 219 predicate places. [2024-06-20 16:17:26,233 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 330 transitions, 3982 flow [2024-06-20 16:17:26,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:26,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:17:26,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:17:26,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-20 16:17:26,234 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:17:26,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:17:26,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1559589507, now seen corresponding path program 5 times [2024-06-20 16:17:26,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:17:26,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736124161] [2024-06-20 16:17:26,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:17:26,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:17:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:17:26,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:17:26,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:17:26,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736124161] [2024-06-20 16:17:26,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736124161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:17:26,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:17:26,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:17:26,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468169296] [2024-06-20 16:17:26,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:17:26,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:17:26,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:17:26,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:17:26,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:17:27,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:17:27,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 330 transitions, 3982 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:27,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:17:27,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:17:27,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:17:28,065 INFO L124 PetriNetUnfolderBase]: 3340/5385 cut-off events. [2024-06-20 16:17:28,065 INFO L125 PetriNetUnfolderBase]: For 610069/610077 co-relation queries the response was YES. [2024-06-20 16:17:28,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49000 conditions, 5385 events. 3340/5385 cut-off events. For 610069/610077 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 32413 event pairs, 768 based on Foata normal form. 6/5382 useless extension candidates. Maximal degree in co-relation 48880. Up to 5083 conditions per place. [2024-06-20 16:17:28,129 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 296 selfloop transitions, 34 changer transitions 0/342 dead transitions. [2024-06-20 16:17:28,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 342 transitions, 4836 flow [2024-06-20 16:17:28,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:17:28,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:17:28,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-20 16:17:28,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42517006802721086 [2024-06-20 16:17:28,131 INFO L175 Difference]: Start difference. First operand has 262 places, 330 transitions, 3982 flow. Second operand 7 states and 125 transitions. [2024-06-20 16:17:28,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 342 transitions, 4836 flow [2024-06-20 16:17:28,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 342 transitions, 4708 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-20 16:17:28,844 INFO L231 Difference]: Finished difference. Result has 265 places, 330 transitions, 3928 flow [2024-06-20 16:17:28,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3854, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3928, PETRI_PLACES=265, PETRI_TRANSITIONS=330} [2024-06-20 16:17:28,845 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 222 predicate places. [2024-06-20 16:17:28,845 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 330 transitions, 3928 flow [2024-06-20 16:17:28,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:28,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:17:28,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:17:28,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-20 16:17:28,845 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:17:28,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:17:28,846 INFO L85 PathProgramCache]: Analyzing trace with hash -576796069, now seen corresponding path program 6 times [2024-06-20 16:17:28,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:17:28,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910860351] [2024-06-20 16:17:28,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:17:28,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:17:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:17:29,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:17:29,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:17:29,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910860351] [2024-06-20 16:17:29,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910860351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:17:29,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:17:29,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:17:29,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955798968] [2024-06-20 16:17:29,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:17:29,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:17:29,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:17:29,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:17:29,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:17:29,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:17:29,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 330 transitions, 3928 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:29,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:17:29,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:17:29,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:17:30,729 INFO L124 PetriNetUnfolderBase]: 3341/5384 cut-off events. [2024-06-20 16:17:30,730 INFO L125 PetriNetUnfolderBase]: For 621954/621962 co-relation queries the response was YES. [2024-06-20 16:17:30,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49037 conditions, 5384 events. 3341/5384 cut-off events. For 621954/621962 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 32378 event pairs, 767 based on Foata normal form. 6/5381 useless extension candidates. Maximal degree in co-relation 48916. Up to 5100 conditions per place. [2024-06-20 16:17:30,796 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 302 selfloop transitions, 26 changer transitions 0/340 dead transitions. [2024-06-20 16:17:30,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 340 transitions, 4622 flow [2024-06-20 16:17:30,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:17:30,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:17:30,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-20 16:17:30,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41496598639455784 [2024-06-20 16:17:30,798 INFO L175 Difference]: Start difference. First operand has 265 places, 330 transitions, 3928 flow. Second operand 7 states and 122 transitions. [2024-06-20 16:17:30,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 340 transitions, 4622 flow [2024-06-20 16:17:31,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 340 transitions, 4494 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-20 16:17:31,530 INFO L231 Difference]: Finished difference. Result has 267 places, 330 transitions, 3858 flow [2024-06-20 16:17:31,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3800, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3858, PETRI_PLACES=267, PETRI_TRANSITIONS=330} [2024-06-20 16:17:31,530 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 224 predicate places. [2024-06-20 16:17:31,530 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 330 transitions, 3858 flow [2024-06-20 16:17:31,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:31,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:17:31,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:17:31,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-20 16:17:31,531 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:17:31,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:17:31,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1548245959, now seen corresponding path program 2 times [2024-06-20 16:17:31,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:17:31,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220235041] [2024-06-20 16:17:31,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:17:31,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:17:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:17:32,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:17:32,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:17:32,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220235041] [2024-06-20 16:17:32,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220235041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:17:32,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:17:32,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:17:32,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207438012] [2024-06-20 16:17:32,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:17:32,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:17:32,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:17:32,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:17:32,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:17:32,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:17:32,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 330 transitions, 3858 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:32,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:17:32,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:17:32,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:17:33,562 INFO L124 PetriNetUnfolderBase]: 3450/5501 cut-off events. [2024-06-20 16:17:33,562 INFO L125 PetriNetUnfolderBase]: For 637457/637457 co-relation queries the response was YES. [2024-06-20 16:17:33,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49981 conditions, 5501 events. 3450/5501 cut-off events. For 637457/637457 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 32583 event pairs, 785 based on Foata normal form. 2/5498 useless extension candidates. Maximal degree in co-relation 49860. Up to 5199 conditions per place. [2024-06-20 16:17:33,630 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 282 selfloop transitions, 65 changer transitions 0/351 dead transitions. [2024-06-20 16:17:33,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 351 transitions, 5032 flow [2024-06-20 16:17:33,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:17:33,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:17:33,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-20 16:17:33,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-20 16:17:33,631 INFO L175 Difference]: Start difference. First operand has 267 places, 330 transitions, 3858 flow. Second operand 8 states and 138 transitions. [2024-06-20 16:17:33,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 351 transitions, 5032 flow [2024-06-20 16:17:34,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 351 transitions, 4926 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-20 16:17:34,444 INFO L231 Difference]: Finished difference. Result has 267 places, 336 transitions, 4008 flow [2024-06-20 16:17:34,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3752, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4008, PETRI_PLACES=267, PETRI_TRANSITIONS=336} [2024-06-20 16:17:34,553 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 224 predicate places. [2024-06-20 16:17:34,553 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 336 transitions, 4008 flow [2024-06-20 16:17:34,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:34,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:17:34,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:17:34,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-20 16:17:34,554 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:17:34,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:17:34,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1547800489, now seen corresponding path program 3 times [2024-06-20 16:17:34,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:17:34,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735408419] [2024-06-20 16:17:34,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:17:34,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:17:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:17:35,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:17:35,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:17:35,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735408419] [2024-06-20 16:17:35,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735408419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:17:35,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:17:35,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:17:35,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769613864] [2024-06-20 16:17:35,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:17:35,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:17:35,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:17:35,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:17:35,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:17:35,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:17:35,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 336 transitions, 4008 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:35,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:17:35,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:17:35,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:17:36,718 INFO L124 PetriNetUnfolderBase]: 3444/5493 cut-off events. [2024-06-20 16:17:36,719 INFO L125 PetriNetUnfolderBase]: For 646836/646836 co-relation queries the response was YES. [2024-06-20 16:17:36,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50059 conditions, 5493 events. 3444/5493 cut-off events. For 646836/646836 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 32508 event pairs, 784 based on Foata normal form. 2/5490 useless extension candidates. Maximal degree in co-relation 49937. Up to 5194 conditions per place. [2024-06-20 16:17:36,780 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 279 selfloop transitions, 67 changer transitions 0/350 dead transitions. [2024-06-20 16:17:36,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 350 transitions, 4914 flow [2024-06-20 16:17:36,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:17:36,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:17:36,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-20 16:17:36,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-20 16:17:36,782 INFO L175 Difference]: Start difference. First operand has 267 places, 336 transitions, 4008 flow. Second operand 8 states and 136 transitions. [2024-06-20 16:17:36,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 350 transitions, 4914 flow [2024-06-20 16:17:37,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 350 transitions, 4716 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-20 16:17:37,505 INFO L231 Difference]: Finished difference. Result has 271 places, 336 transitions, 3950 flow [2024-06-20 16:17:37,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3810, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3950, PETRI_PLACES=271, PETRI_TRANSITIONS=336} [2024-06-20 16:17:37,505 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 228 predicate places. [2024-06-20 16:17:37,513 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 336 transitions, 3950 flow [2024-06-20 16:17:37,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:37,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:17:37,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:17:37,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-20 16:17:37,514 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:17:37,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:17:37,514 INFO L85 PathProgramCache]: Analyzing trace with hash -576788133, now seen corresponding path program 4 times [2024-06-20 16:17:37,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:17:37,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621645031] [2024-06-20 16:17:37,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:17:37,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:17:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:17:38,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:17:38,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:17:38,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621645031] [2024-06-20 16:17:38,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621645031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:17:38,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:17:38,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:17:38,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220374668] [2024-06-20 16:17:38,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:17:38,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:17:38,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:17:38,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:17:38,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:17:38,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:17:38,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 336 transitions, 3950 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:38,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:17:38,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:17:38,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:17:39,671 INFO L124 PetriNetUnfolderBase]: 3438/5485 cut-off events. [2024-06-20 16:17:39,671 INFO L125 PetriNetUnfolderBase]: For 655028/655028 co-relation queries the response was YES. [2024-06-20 16:17:39,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49948 conditions, 5485 events. 3438/5485 cut-off events. For 655028/655028 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 32445 event pairs, 786 based on Foata normal form. 2/5482 useless extension candidates. Maximal degree in co-relation 49825. Up to 5189 conditions per place. [2024-06-20 16:17:39,737 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 283 selfloop transitions, 63 changer transitions 0/350 dead transitions. [2024-06-20 16:17:39,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 350 transitions, 4718 flow [2024-06-20 16:17:39,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:17:39,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:17:39,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-20 16:17:39,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-20 16:17:39,738 INFO L175 Difference]: Start difference. First operand has 271 places, 336 transitions, 3950 flow. Second operand 8 states and 137 transitions. [2024-06-20 16:17:39,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 350 transitions, 4718 flow [2024-06-20 16:17:40,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 350 transitions, 4522 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-20 16:17:40,452 INFO L231 Difference]: Finished difference. Result has 272 places, 336 transitions, 3886 flow [2024-06-20 16:17:40,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3754, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3886, PETRI_PLACES=272, PETRI_TRANSITIONS=336} [2024-06-20 16:17:40,453 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 229 predicate places. [2024-06-20 16:17:40,453 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 336 transitions, 3886 flow [2024-06-20 16:17:40,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:40,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:17:40,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:17:40,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-20 16:17:40,453 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:17:40,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:17:40,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1684261189, now seen corresponding path program 1 times [2024-06-20 16:17:40,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:17:40,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475544483] [2024-06-20 16:17:40,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:17:40,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:17:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:17:41,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:17:41,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:17:41,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475544483] [2024-06-20 16:17:41,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475544483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:17:41,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:17:41,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:17:41,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173016464] [2024-06-20 16:17:41,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:17:41,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:17:41,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:17:41,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:17:41,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:17:41,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:17:41,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 336 transitions, 3886 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:41,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:17:41,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:17:41,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:17:42,626 INFO L124 PetriNetUnfolderBase]: 3222/5266 cut-off events. [2024-06-20 16:17:42,626 INFO L125 PetriNetUnfolderBase]: For 584907/584907 co-relation queries the response was YES. [2024-06-20 16:17:42,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46331 conditions, 5266 events. 3222/5266 cut-off events. For 584907/584907 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 32334 event pairs, 714 based on Foata normal form. 1/5256 useless extension candidates. Maximal degree in co-relation 46208. Up to 4921 conditions per place. [2024-06-20 16:17:42,690 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 321 selfloop transitions, 24 changer transitions 0/363 dead transitions. [2024-06-20 16:17:42,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 363 transitions, 4924 flow [2024-06-20 16:17:42,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:17:42,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:17:42,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-20 16:17:42,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43915343915343913 [2024-06-20 16:17:42,691 INFO L175 Difference]: Start difference. First operand has 272 places, 336 transitions, 3886 flow. Second operand 9 states and 166 transitions. [2024-06-20 16:17:42,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 363 transitions, 4924 flow [2024-06-20 16:17:43,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 363 transitions, 4781 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-20 16:17:43,546 INFO L231 Difference]: Finished difference. Result has 275 places, 342 transitions, 3931 flow [2024-06-20 16:17:43,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3743, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3931, PETRI_PLACES=275, PETRI_TRANSITIONS=342} [2024-06-20 16:17:43,547 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 232 predicate places. [2024-06-20 16:17:43,547 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 342 transitions, 3931 flow [2024-06-20 16:17:43,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:43,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:17:43,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:17:43,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-20 16:17:43,548 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:17:43,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:17:43,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1684351399, now seen corresponding path program 2 times [2024-06-20 16:17:43,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:17:43,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126109874] [2024-06-20 16:17:43,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:17:43,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:17:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:17:44,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:17:44,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:17:44,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126109874] [2024-06-20 16:17:44,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126109874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:17:44,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:17:44,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:17:44,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129746555] [2024-06-20 16:17:44,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:17:44,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:17:44,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:17:44,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:17:44,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:17:44,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:17:44,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 342 transitions, 3931 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:44,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:17:44,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:17:44,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:17:45,720 INFO L124 PetriNetUnfolderBase]: 3219/5262 cut-off events. [2024-06-20 16:17:45,720 INFO L125 PetriNetUnfolderBase]: For 597927/597927 co-relation queries the response was YES. [2024-06-20 16:17:45,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46716 conditions, 5262 events. 3219/5262 cut-off events. For 597927/597927 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 32328 event pairs, 714 based on Foata normal form. 1/5252 useless extension candidates. Maximal degree in co-relation 46592. Up to 4930 conditions per place. [2024-06-20 16:17:45,785 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 322 selfloop transitions, 18 changer transitions 0/358 dead transitions. [2024-06-20 16:17:45,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 358 transitions, 4663 flow [2024-06-20 16:17:45,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:17:45,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:17:45,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-20 16:17:45,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2024-06-20 16:17:45,786 INFO L175 Difference]: Start difference. First operand has 275 places, 342 transitions, 3931 flow. Second operand 8 states and 146 transitions. [2024-06-20 16:17:45,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 358 transitions, 4663 flow [2024-06-20 16:17:46,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 358 transitions, 4536 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-06-20 16:17:46,817 INFO L231 Difference]: Finished difference. Result has 278 places, 342 transitions, 3846 flow [2024-06-20 16:17:46,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3804, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3846, PETRI_PLACES=278, PETRI_TRANSITIONS=342} [2024-06-20 16:17:46,817 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 235 predicate places. [2024-06-20 16:17:46,818 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 342 transitions, 3846 flow [2024-06-20 16:17:46,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:46,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:17:46,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:17:46,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-20 16:17:46,818 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:17:46,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:17:46,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1754864834, now seen corresponding path program 1 times [2024-06-20 16:17:46,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:17:46,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803312601] [2024-06-20 16:17:46,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:17:46,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:17:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:17:47,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:17:47,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:17:47,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803312601] [2024-06-20 16:17:47,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803312601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:17:47,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:17:47,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:17:47,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332828412] [2024-06-20 16:17:47,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:17:47,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:17:47,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:17:47,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:17:47,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:17:47,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:17:47,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 342 transitions, 3846 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:47,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:17:47,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:17:47,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:17:48,736 INFO L124 PetriNetUnfolderBase]: 3318/5365 cut-off events. [2024-06-20 16:17:48,737 INFO L125 PetriNetUnfolderBase]: For 610156/610156 co-relation queries the response was YES. [2024-06-20 16:17:48,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47507 conditions, 5365 events. 3318/5365 cut-off events. For 610156/610156 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 32437 event pairs, 741 based on Foata normal form. 1/5357 useless extension candidates. Maximal degree in co-relation 47381. Up to 5127 conditions per place. [2024-06-20 16:17:48,803 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 333 selfloop transitions, 18 changer transitions 0/361 dead transitions. [2024-06-20 16:17:48,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 361 transitions, 4658 flow [2024-06-20 16:17:48,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:17:48,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:17:48,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-20 16:17:48,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-06-20 16:17:48,804 INFO L175 Difference]: Start difference. First operand has 278 places, 342 transitions, 3846 flow. Second operand 8 states and 139 transitions. [2024-06-20 16:17:48,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 361 transitions, 4658 flow [2024-06-20 16:17:49,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 361 transitions, 4610 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-20 16:17:49,968 INFO L231 Difference]: Finished difference. Result has 279 places, 345 transitions, 3904 flow [2024-06-20 16:17:49,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3798, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3904, PETRI_PLACES=279, PETRI_TRANSITIONS=345} [2024-06-20 16:17:49,968 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 236 predicate places. [2024-06-20 16:17:49,968 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 345 transitions, 3904 flow [2024-06-20 16:17:49,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:49,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:17:49,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:17:49,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-20 16:17:49,969 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:17:49,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:17:49,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1688076204, now seen corresponding path program 2 times [2024-06-20 16:17:49,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:17:49,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187866209] [2024-06-20 16:17:49,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:17:49,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:17:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:17:50,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:17:50,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:17:50,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187866209] [2024-06-20 16:17:50,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187866209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:17:50,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:17:50,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:17:50,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053942148] [2024-06-20 16:17:50,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:17:50,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:17:50,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:17:50,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:17:50,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:17:50,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:17:50,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 345 transitions, 3904 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:50,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:17:50,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:17:50,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:17:51,780 INFO L124 PetriNetUnfolderBase]: 3331/5383 cut-off events. [2024-06-20 16:17:51,781 INFO L125 PetriNetUnfolderBase]: For 626564/626564 co-relation queries the response was YES. [2024-06-20 16:17:51,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48185 conditions, 5383 events. 3331/5383 cut-off events. For 626564/626564 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 32550 event pairs, 743 based on Foata normal form. 1/5375 useless extension candidates. Maximal degree in co-relation 48058. Up to 5103 conditions per place. [2024-06-20 16:17:51,848 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 314 selfloop transitions, 45 changer transitions 0/369 dead transitions. [2024-06-20 16:17:51,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 369 transitions, 5174 flow [2024-06-20 16:17:51,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:17:51,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:17:51,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-20 16:17:51,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43154761904761907 [2024-06-20 16:17:51,850 INFO L175 Difference]: Start difference. First operand has 279 places, 345 transitions, 3904 flow. Second operand 8 states and 145 transitions. [2024-06-20 16:17:51,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 369 transitions, 5174 flow [2024-06-20 16:17:52,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 369 transitions, 5090 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-20 16:17:52,962 INFO L231 Difference]: Finished difference. Result has 281 places, 354 transitions, 4114 flow [2024-06-20 16:17:52,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3820, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4114, PETRI_PLACES=281, PETRI_TRANSITIONS=354} [2024-06-20 16:17:52,963 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 238 predicate places. [2024-06-20 16:17:52,963 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 354 transitions, 4114 flow [2024-06-20 16:17:52,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:52,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:17:52,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:17:52,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-20 16:17:52,964 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:17:52,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:17:52,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1767178085, now seen corresponding path program 1 times [2024-06-20 16:17:52,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:17:52,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164159937] [2024-06-20 16:17:52,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:17:52,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:17:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:17:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:17:53,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:17:53,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164159937] [2024-06-20 16:17:53,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164159937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:17:53,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:17:53,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:17:53,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873799211] [2024-06-20 16:17:53,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:17:53,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:17:53,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:17:53,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:17:53,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:17:53,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:17:53,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 354 transitions, 4114 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:53,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:17:53,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:17:53,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:17:54,928 INFO L124 PetriNetUnfolderBase]: 3349/5410 cut-off events. [2024-06-20 16:17:54,928 INFO L125 PetriNetUnfolderBase]: For 649040/649040 co-relation queries the response was YES. [2024-06-20 16:17:54,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48915 conditions, 5410 events. 3349/5410 cut-off events. For 649040/649040 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 32752 event pairs, 743 based on Foata normal form. 2/5403 useless extension candidates. Maximal degree in co-relation 48787. Up to 5140 conditions per place. [2024-06-20 16:17:54,996 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 334 selfloop transitions, 35 changer transitions 0/379 dead transitions. [2024-06-20 16:17:54,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 379 transitions, 5180 flow [2024-06-20 16:17:54,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:17:54,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:17:54,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-20 16:17:54,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43154761904761907 [2024-06-20 16:17:54,997 INFO L175 Difference]: Start difference. First operand has 281 places, 354 transitions, 4114 flow. Second operand 8 states and 145 transitions. [2024-06-20 16:17:54,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 379 transitions, 5180 flow [2024-06-20 16:17:56,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 379 transitions, 5085 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-20 16:17:56,136 INFO L231 Difference]: Finished difference. Result has 287 places, 363 transitions, 4242 flow [2024-06-20 16:17:56,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4019, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4242, PETRI_PLACES=287, PETRI_TRANSITIONS=363} [2024-06-20 16:17:56,137 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 244 predicate places. [2024-06-20 16:17:56,137 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 363 transitions, 4242 flow [2024-06-20 16:17:56,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:56,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:17:56,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:17:56,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-20 16:17:56,137 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:17:56,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:17:56,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1688070624, now seen corresponding path program 3 times [2024-06-20 16:17:56,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:17:56,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783468204] [2024-06-20 16:17:56,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:17:56,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:17:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:17:56,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:17:56,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:17:56,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783468204] [2024-06-20 16:17:56,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783468204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:17:56,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:17:56,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:17:56,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962565317] [2024-06-20 16:17:56,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:17:56,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:17:56,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:17:56,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:17:56,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:17:57,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:17:57,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 363 transitions, 4242 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:57,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:17:57,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:17:57,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:17:58,104 INFO L124 PetriNetUnfolderBase]: 3346/5406 cut-off events. [2024-06-20 16:17:58,104 INFO L125 PetriNetUnfolderBase]: For 657484/657484 co-relation queries the response was YES. [2024-06-20 16:17:58,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49385 conditions, 5406 events. 3346/5406 cut-off events. For 657484/657484 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 32665 event pairs, 742 based on Foata normal form. 1/5398 useless extension candidates. Maximal degree in co-relation 49254. Up to 5125 conditions per place. [2024-06-20 16:17:58,174 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 323 selfloop transitions, 44 changer transitions 0/377 dead transitions. [2024-06-20 16:17:58,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 377 transitions, 5180 flow [2024-06-20 16:17:58,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:17:58,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:17:58,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-20 16:17:58,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43154761904761907 [2024-06-20 16:17:58,175 INFO L175 Difference]: Start difference. First operand has 287 places, 363 transitions, 4242 flow. Second operand 8 states and 145 transitions. [2024-06-20 16:17:58,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 377 transitions, 5180 flow [2024-06-20 16:17:59,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 377 transitions, 5070 flow, removed 50 selfloop flow, removed 3 redundant places. [2024-06-20 16:17:59,073 INFO L231 Difference]: Finished difference. Result has 292 places, 363 transitions, 4226 flow [2024-06-20 16:17:59,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4132, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4226, PETRI_PLACES=292, PETRI_TRANSITIONS=363} [2024-06-20 16:17:59,074 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 249 predicate places. [2024-06-20 16:17:59,074 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 363 transitions, 4226 flow [2024-06-20 16:17:59,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:17:59,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:17:59,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:17:59,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-20 16:17:59,075 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:17:59,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:17:59,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1767184037, now seen corresponding path program 3 times [2024-06-20 16:17:59,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:17:59,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186945686] [2024-06-20 16:17:59,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:17:59,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:17:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:17:59,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:17:59,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:17:59,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186945686] [2024-06-20 16:17:59,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186945686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:17:59,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:17:59,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:17:59,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240688928] [2024-06-20 16:17:59,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:17:59,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:17:59,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:17:59,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:17:59,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:18:00,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:18:00,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 363 transitions, 4226 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:00,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:18:00,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:18:00,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:18:01,186 INFO L124 PetriNetUnfolderBase]: 3266/5326 cut-off events. [2024-06-20 16:18:01,186 INFO L125 PetriNetUnfolderBase]: For 672521/672521 co-relation queries the response was YES. [2024-06-20 16:18:01,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49080 conditions, 5326 events. 3266/5326 cut-off events. For 672521/672521 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 32615 event pairs, 713 based on Foata normal form. 1/5316 useless extension candidates. Maximal degree in co-relation 48946. Up to 4971 conditions per place. [2024-06-20 16:18:01,263 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 327 selfloop transitions, 30 changer transitions 0/379 dead transitions. [2024-06-20 16:18:01,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 379 transitions, 5056 flow [2024-06-20 16:18:01,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:18:01,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:18:01,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-20 16:18:01,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-20 16:18:01,266 INFO L175 Difference]: Start difference. First operand has 292 places, 363 transitions, 4226 flow. Second operand 8 states and 147 transitions. [2024-06-20 16:18:01,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 379 transitions, 5056 flow [2024-06-20 16:18:02,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 379 transitions, 4950 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-20 16:18:02,173 INFO L231 Difference]: Finished difference. Result has 293 places, 366 transitions, 4268 flow [2024-06-20 16:18:02,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4120, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4268, PETRI_PLACES=293, PETRI_TRANSITIONS=366} [2024-06-20 16:18:02,174 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 250 predicate places. [2024-06-20 16:18:02,174 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 366 transitions, 4268 flow [2024-06-20 16:18:02,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:02,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:18:02,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:18:02,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-20 16:18:02,175 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:18:02,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:18:02,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1559581571, now seen corresponding path program 4 times [2024-06-20 16:18:02,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:18:02,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058626827] [2024-06-20 16:18:02,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:18:02,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:18:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:18:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:18:03,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:18:03,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058626827] [2024-06-20 16:18:03,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058626827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:18:03,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:18:03,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:18:03,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129064299] [2024-06-20 16:18:03,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:18:03,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:18:03,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:18:03,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:18:03,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:18:03,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:18:03,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 366 transitions, 4268 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:03,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:18:03,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:18:03,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:18:04,267 INFO L124 PetriNetUnfolderBase]: 3263/5322 cut-off events. [2024-06-20 16:18:04,267 INFO L125 PetriNetUnfolderBase]: For 685258/685258 co-relation queries the response was YES. [2024-06-20 16:18:04,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49499 conditions, 5322 events. 3263/5322 cut-off events. For 685258/685258 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 32608 event pairs, 712 based on Foata normal form. 1/5312 useless extension candidates. Maximal degree in co-relation 49364. Up to 4994 conditions per place. [2024-06-20 16:18:04,341 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 339 selfloop transitions, 18 changer transitions 0/379 dead transitions. [2024-06-20 16:18:04,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 379 transitions, 5092 flow [2024-06-20 16:18:04,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:18:04,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:18:04,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-20 16:18:04,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-20 16:18:04,342 INFO L175 Difference]: Start difference. First operand has 293 places, 366 transitions, 4268 flow. Second operand 8 states and 140 transitions. [2024-06-20 16:18:04,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 379 transitions, 5092 flow [2024-06-20 16:18:05,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 379 transitions, 4966 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-20 16:18:05,238 INFO L231 Difference]: Finished difference. Result has 295 places, 369 transitions, 4272 flow [2024-06-20 16:18:05,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4142, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4272, PETRI_PLACES=295, PETRI_TRANSITIONS=369} [2024-06-20 16:18:05,238 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 252 predicate places. [2024-06-20 16:18:05,238 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 369 transitions, 4272 flow [2024-06-20 16:18:05,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:05,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:18:05,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:18:05,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-20 16:18:05,239 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:18:05,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:18:05,239 INFO L85 PathProgramCache]: Analyzing trace with hash -571068478, now seen corresponding path program 4 times [2024-06-20 16:18:05,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:18:05,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283620909] [2024-06-20 16:18:05,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:18:05,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:18:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:18:05,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:18:05,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:18:05,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283620909] [2024-06-20 16:18:05,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283620909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:18:05,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:18:05,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:18:05,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579571843] [2024-06-20 16:18:05,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:18:05,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:18:05,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:18:05,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:18:05,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:18:06,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:18:06,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 369 transitions, 4272 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:06,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:18:06,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:18:06,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:18:07,178 INFO L124 PetriNetUnfolderBase]: 3361/5427 cut-off events. [2024-06-20 16:18:07,178 INFO L125 PetriNetUnfolderBase]: For 704217/704217 co-relation queries the response was YES. [2024-06-20 16:18:07,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50767 conditions, 5427 events. 3361/5427 cut-off events. For 704217/704217 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 32801 event pairs, 740 based on Foata normal form. 1/5419 useless extension candidates. Maximal degree in co-relation 50631. Up to 5182 conditions per place. [2024-06-20 16:18:07,253 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 347 selfloop transitions, 30 changer transitions 0/387 dead transitions. [2024-06-20 16:18:07,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 387 transitions, 5526 flow [2024-06-20 16:18:07,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:18:07,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:18:07,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-20 16:18:07,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-06-20 16:18:07,255 INFO L175 Difference]: Start difference. First operand has 295 places, 369 transitions, 4272 flow. Second operand 8 states and 139 transitions. [2024-06-20 16:18:07,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 387 transitions, 5526 flow [2024-06-20 16:18:08,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 387 transitions, 5418 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-20 16:18:08,409 INFO L231 Difference]: Finished difference. Result has 297 places, 375 transitions, 4362 flow [2024-06-20 16:18:08,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4164, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4362, PETRI_PLACES=297, PETRI_TRANSITIONS=375} [2024-06-20 16:18:08,409 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 254 predicate places. [2024-06-20 16:18:08,409 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 375 transitions, 4362 flow [2024-06-20 16:18:08,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:08,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:18:08,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:18:08,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-20 16:18:08,410 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:18:08,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:18:08,410 INFO L85 PathProgramCache]: Analyzing trace with hash -563709171, now seen corresponding path program 2 times [2024-06-20 16:18:08,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:18:08,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041233899] [2024-06-20 16:18:08,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:18:08,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:18:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:18:09,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:18:09,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:18:09,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041233899] [2024-06-20 16:18:09,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041233899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:18:09,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:18:09,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:18:09,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219081287] [2024-06-20 16:18:09,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:18:09,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:18:09,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:18:09,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:18:09,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:18:09,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:18:09,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 375 transitions, 4362 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:09,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:18:09,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:18:09,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:18:10,373 INFO L124 PetriNetUnfolderBase]: 3371/5443 cut-off events. [2024-06-20 16:18:10,373 INFO L125 PetriNetUnfolderBase]: For 722149/722149 co-relation queries the response was YES. [2024-06-20 16:18:10,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51013 conditions, 5443 events. 3371/5443 cut-off events. For 722149/722149 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 32973 event pairs, 740 based on Foata normal form. 2/5436 useless extension candidates. Maximal degree in co-relation 50876. Up to 5208 conditions per place. [2024-06-20 16:18:10,443 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 359 selfloop transitions, 20 changer transitions 0/389 dead transitions. [2024-06-20 16:18:10,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 389 transitions, 5200 flow [2024-06-20 16:18:10,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:18:10,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:18:10,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-20 16:18:10,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-06-20 16:18:10,446 INFO L175 Difference]: Start difference. First operand has 297 places, 375 transitions, 4362 flow. Second operand 8 states and 134 transitions. [2024-06-20 16:18:10,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 389 transitions, 5200 flow [2024-06-20 16:18:11,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 389 transitions, 5076 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-20 16:18:11,460 INFO L231 Difference]: Finished difference. Result has 300 places, 378 transitions, 4339 flow [2024-06-20 16:18:11,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4238, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4339, PETRI_PLACES=300, PETRI_TRANSITIONS=378} [2024-06-20 16:18:11,461 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 257 predicate places. [2024-06-20 16:18:11,461 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 378 transitions, 4339 flow [2024-06-20 16:18:11,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:11,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:18:11,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:18:11,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-20 16:18:11,462 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:18:11,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:18:11,462 INFO L85 PathProgramCache]: Analyzing trace with hash 968924102, now seen corresponding path program 5 times [2024-06-20 16:18:11,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:18:11,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889782826] [2024-06-20 16:18:11,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:18:11,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:18:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:18:12,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:18:12,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:18:12,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889782826] [2024-06-20 16:18:12,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889782826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:18:12,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:18:12,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:18:12,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680955344] [2024-06-20 16:18:12,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:18:12,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:18:12,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:18:12,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:18:12,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:18:12,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:18:12,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 378 transitions, 4339 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:12,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:18:12,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:18:12,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:18:13,395 INFO L124 PetriNetUnfolderBase]: 3373/5444 cut-off events. [2024-06-20 16:18:13,396 INFO L125 PetriNetUnfolderBase]: For 728890/728890 co-relation queries the response was YES. [2024-06-20 16:18:13,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51054 conditions, 5444 events. 3373/5444 cut-off events. For 728890/728890 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 32924 event pairs, 740 based on Foata normal form. 1/5436 useless extension candidates. Maximal degree in co-relation 50916. Up to 5198 conditions per place. [2024-06-20 16:18:13,465 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 348 selfloop transitions, 31 changer transitions 0/389 dead transitions. [2024-06-20 16:18:13,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 389 transitions, 5299 flow [2024-06-20 16:18:13,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:18:13,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:18:13,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-20 16:18:13,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-20 16:18:13,467 INFO L175 Difference]: Start difference. First operand has 300 places, 378 transitions, 4339 flow. Second operand 8 states and 137 transitions. [2024-06-20 16:18:13,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 389 transitions, 5299 flow [2024-06-20 16:18:14,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 389 transitions, 5179 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-20 16:18:14,620 INFO L231 Difference]: Finished difference. Result has 302 places, 378 transitions, 4287 flow [2024-06-20 16:18:14,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4219, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4287, PETRI_PLACES=302, PETRI_TRANSITIONS=378} [2024-06-20 16:18:14,620 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 259 predicate places. [2024-06-20 16:18:14,621 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 378 transitions, 4287 flow [2024-06-20 16:18:14,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:14,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:18:14,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:18:14,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-20 16:18:14,621 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:18:14,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:18:14,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1555211504, now seen corresponding path program 6 times [2024-06-20 16:18:14,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:18:14,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64057188] [2024-06-20 16:18:14,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:18:14,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:18:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:18:15,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:18:15,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:18:15,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64057188] [2024-06-20 16:18:15,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64057188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:18:15,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:18:15,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:18:15,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480038673] [2024-06-20 16:18:15,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:18:15,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:18:15,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:18:15,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:18:15,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:18:15,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:18:15,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 378 transitions, 4287 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:15,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:18:15,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:18:15,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:18:16,605 INFO L124 PetriNetUnfolderBase]: 3370/5440 cut-off events. [2024-06-20 16:18:16,606 INFO L125 PetriNetUnfolderBase]: For 738503/738503 co-relation queries the response was YES. [2024-06-20 16:18:16,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50978 conditions, 5440 events. 3370/5440 cut-off events. For 738503/738503 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 32905 event pairs, 740 based on Foata normal form. 1/5432 useless extension candidates. Maximal degree in co-relation 50840. Up to 5210 conditions per place. [2024-06-20 16:18:16,679 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 360 selfloop transitions, 18 changer transitions 0/388 dead transitions. [2024-06-20 16:18:16,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 388 transitions, 5071 flow [2024-06-20 16:18:16,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:18:16,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:18:16,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-20 16:18:16,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-20 16:18:16,681 INFO L175 Difference]: Start difference. First operand has 302 places, 378 transitions, 4287 flow. Second operand 8 states and 133 transitions. [2024-06-20 16:18:16,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 388 transitions, 5071 flow [2024-06-20 16:18:17,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 388 transitions, 4965 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-20 16:18:17,815 INFO L231 Difference]: Finished difference. Result has 304 places, 378 transitions, 4223 flow [2024-06-20 16:18:17,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4181, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4223, PETRI_PLACES=304, PETRI_TRANSITIONS=378} [2024-06-20 16:18:17,816 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 261 predicate places. [2024-06-20 16:18:17,816 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 378 transitions, 4223 flow [2024-06-20 16:18:17,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:17,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:18:17,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:18:17,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-20 16:18:17,817 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:18:17,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:18:17,817 INFO L85 PathProgramCache]: Analyzing trace with hash -571068261, now seen corresponding path program 3 times [2024-06-20 16:18:17,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:18:17,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754895785] [2024-06-20 16:18:17,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:18:17,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:18:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:18:18,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:18:18,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:18:18,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754895785] [2024-06-20 16:18:18,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754895785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:18:18,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:18:18,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:18:18,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742003198] [2024-06-20 16:18:18,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:18:18,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:18:18,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:18:18,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:18:18,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:18:18,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:18:18,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 378 transitions, 4223 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:18,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:18:18,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:18:18,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:18:19,751 INFO L124 PetriNetUnfolderBase]: 3380/5456 cut-off events. [2024-06-20 16:18:19,751 INFO L125 PetriNetUnfolderBase]: For 756819/756819 co-relation queries the response was YES. [2024-06-20 16:18:19,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51202 conditions, 5456 events. 3380/5456 cut-off events. For 756819/756819 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 33088 event pairs, 740 based on Foata normal form. 2/5449 useless extension candidates. Maximal degree in co-relation 51063. Up to 5194 conditions per place. [2024-06-20 16:18:19,826 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 352 selfloop transitions, 32 changer transitions 0/394 dead transitions. [2024-06-20 16:18:19,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 394 transitions, 5259 flow [2024-06-20 16:18:19,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:18:19,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:18:19,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-20 16:18:19,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-20 16:18:19,827 INFO L175 Difference]: Start difference. First operand has 304 places, 378 transitions, 4223 flow. Second operand 8 states and 140 transitions. [2024-06-20 16:18:19,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 394 transitions, 5259 flow [2024-06-20 16:18:20,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 394 transitions, 5199 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-20 16:18:20,827 INFO L231 Difference]: Finished difference. Result has 304 places, 381 transitions, 4287 flow [2024-06-20 16:18:20,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4163, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4287, PETRI_PLACES=304, PETRI_TRANSITIONS=381} [2024-06-20 16:18:20,828 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 261 predicate places. [2024-06-20 16:18:20,828 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 381 transitions, 4287 flow [2024-06-20 16:18:20,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:20,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:18:20,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:18:20,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-20 16:18:20,832 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:18:20,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:18:20,833 INFO L85 PathProgramCache]: Analyzing trace with hash -563716611, now seen corresponding path program 4 times [2024-06-20 16:18:20,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:18:20,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909387387] [2024-06-20 16:18:20,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:18:20,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:18:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:18:21,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:18:21,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:18:21,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909387387] [2024-06-20 16:18:21,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909387387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:18:21,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:18:21,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:18:21,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317599131] [2024-06-20 16:18:21,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:18:21,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:18:21,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:18:21,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:18:21,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:18:21,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:18:21,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 381 transitions, 4287 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:21,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:18:21,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:18:21,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:18:22,753 INFO L124 PetriNetUnfolderBase]: 3374/5448 cut-off events. [2024-06-20 16:18:22,753 INFO L125 PetriNetUnfolderBase]: For 763774/763774 co-relation queries the response was YES. [2024-06-20 16:18:22,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51172 conditions, 5448 events. 3374/5448 cut-off events. For 763774/763774 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 33055 event pairs, 739 based on Foata normal form. 2/5441 useless extension candidates. Maximal degree in co-relation 51032. Up to 5201 conditions per place. [2024-06-20 16:18:22,825 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 358 selfloop transitions, 25 changer transitions 0/393 dead transitions. [2024-06-20 16:18:22,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 393 transitions, 5089 flow [2024-06-20 16:18:22,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:18:22,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:18:22,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-20 16:18:22,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-20 16:18:22,827 INFO L175 Difference]: Start difference. First operand has 304 places, 381 transitions, 4287 flow. Second operand 8 states and 137 transitions. [2024-06-20 16:18:22,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 393 transitions, 5089 flow [2024-06-20 16:18:24,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 393 transitions, 4957 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-20 16:18:24,146 INFO L231 Difference]: Finished difference. Result has 306 places, 381 transitions, 4211 flow [2024-06-20 16:18:24,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4155, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4211, PETRI_PLACES=306, PETRI_TRANSITIONS=381} [2024-06-20 16:18:24,146 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 263 predicate places. [2024-06-20 16:18:24,147 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 381 transitions, 4211 flow [2024-06-20 16:18:24,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:24,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:18:24,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:18:24,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-20 16:18:24,147 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:18:24,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:18:24,148 INFO L85 PathProgramCache]: Analyzing trace with hash -2137893755, now seen corresponding path program 1 times [2024-06-20 16:18:24,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:18:24,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412372500] [2024-06-20 16:18:24,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:18:24,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:18:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:18:25,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:18:25,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:18:25,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412372500] [2024-06-20 16:18:25,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412372500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:18:25,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:18:25,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:18:25,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735686612] [2024-06-20 16:18:25,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:18:25,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:18:25,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:18:25,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:18:25,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:18:25,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:18:25,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 381 transitions, 4211 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:25,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:18:25,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:18:25,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:18:26,569 INFO L124 PetriNetUnfolderBase]: 3455/5541 cut-off events. [2024-06-20 16:18:26,570 INFO L125 PetriNetUnfolderBase]: For 888436/888436 co-relation queries the response was YES. [2024-06-20 16:18:26,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54392 conditions, 5541 events. 3455/5541 cut-off events. For 888436/888436 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 33280 event pairs, 747 based on Foata normal form. 1/5534 useless extension candidates. Maximal degree in co-relation 54251. Up to 5162 conditions per place. [2024-06-20 16:18:26,654 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 338 selfloop transitions, 58 changer transitions 0/414 dead transitions. [2024-06-20 16:18:26,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 414 transitions, 5466 flow [2024-06-20 16:18:26,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:18:26,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:18:26,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-20 16:18:26,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2024-06-20 16:18:26,655 INFO L175 Difference]: Start difference. First operand has 306 places, 381 transitions, 4211 flow. Second operand 9 states and 164 transitions. [2024-06-20 16:18:26,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 414 transitions, 5466 flow [2024-06-20 16:18:27,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 414 transitions, 5385 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-20 16:18:27,743 INFO L231 Difference]: Finished difference. Result has 310 places, 394 transitions, 4512 flow [2024-06-20 16:18:27,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4130, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4512, PETRI_PLACES=310, PETRI_TRANSITIONS=394} [2024-06-20 16:18:27,743 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 267 predicate places. [2024-06-20 16:18:27,743 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 394 transitions, 4512 flow [2024-06-20 16:18:27,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:27,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:18:27,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:18:27,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-20 16:18:27,744 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:18:27,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:18:27,744 INFO L85 PathProgramCache]: Analyzing trace with hash -2132179835, now seen corresponding path program 2 times [2024-06-20 16:18:27,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:18:27,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128463931] [2024-06-20 16:18:27,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:18:27,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:18:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:18:28,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:18:28,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:18:28,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128463931] [2024-06-20 16:18:28,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128463931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:18:28,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:18:28,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:18:28,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096502427] [2024-06-20 16:18:28,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:18:28,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:18:28,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:18:28,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:18:28,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:18:28,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:18:28,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 394 transitions, 4512 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:28,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:18:28,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:18:28,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:18:30,100 INFO L124 PetriNetUnfolderBase]: 3475/5576 cut-off events. [2024-06-20 16:18:30,100 INFO L125 PetriNetUnfolderBase]: For 917024/917026 co-relation queries the response was YES. [2024-06-20 16:18:30,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55428 conditions, 5576 events. 3475/5576 cut-off events. For 917024/917026 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 33606 event pairs, 750 based on Foata normal form. 4/5574 useless extension candidates. Maximal degree in co-relation 55284. Up to 5214 conditions per place. [2024-06-20 16:18:30,179 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 344 selfloop transitions, 64 changer transitions 0/426 dead transitions. [2024-06-20 16:18:30,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 426 transitions, 5636 flow [2024-06-20 16:18:30,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:18:30,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:18:30,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-20 16:18:30,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-20 16:18:30,180 INFO L175 Difference]: Start difference. First operand has 310 places, 394 transitions, 4512 flow. Second operand 8 states and 148 transitions. [2024-06-20 16:18:30,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 426 transitions, 5636 flow [2024-06-20 16:18:31,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 426 transitions, 5467 flow, removed 81 selfloop flow, removed 2 redundant places. [2024-06-20 16:18:31,705 INFO L231 Difference]: Finished difference. Result has 316 places, 406 transitions, 4737 flow [2024-06-20 16:18:31,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4385, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4737, PETRI_PLACES=316, PETRI_TRANSITIONS=406} [2024-06-20 16:18:31,705 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 273 predicate places. [2024-06-20 16:18:31,706 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 406 transitions, 4737 flow [2024-06-20 16:18:31,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:31,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:18:31,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:18:31,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-20 16:18:31,706 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:18:31,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:18:31,707 INFO L85 PathProgramCache]: Analyzing trace with hash 934318209, now seen corresponding path program 1 times [2024-06-20 16:18:31,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:18:31,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345355195] [2024-06-20 16:18:31,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:18:31,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:18:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:18:32,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:18:32,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:18:32,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345355195] [2024-06-20 16:18:32,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345355195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:18:32,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:18:32,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:18:32,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697355818] [2024-06-20 16:18:32,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:18:32,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:18:32,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:18:32,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:18:32,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:18:32,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:18:32,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 406 transitions, 4737 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:32,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:18:32,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:18:32,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:18:33,807 INFO L124 PetriNetUnfolderBase]: 3485/5588 cut-off events. [2024-06-20 16:18:33,808 INFO L125 PetriNetUnfolderBase]: For 939157/939159 co-relation queries the response was YES. [2024-06-20 16:18:33,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56216 conditions, 5588 events. 3485/5588 cut-off events. For 939157/939159 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 33689 event pairs, 757 based on Foata normal form. 4/5582 useless extension candidates. Maximal degree in co-relation 56070. Up to 5248 conditions per place. [2024-06-20 16:18:34,022 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 381 selfloop transitions, 32 changer transitions 0/431 dead transitions. [2024-06-20 16:18:34,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 431 transitions, 5739 flow [2024-06-20 16:18:34,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:18:34,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:18:34,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-20 16:18:34,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-20 16:18:34,024 INFO L175 Difference]: Start difference. First operand has 316 places, 406 transitions, 4737 flow. Second operand 8 states and 148 transitions. [2024-06-20 16:18:34,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 431 transitions, 5739 flow [2024-06-20 16:18:35,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 431 transitions, 5548 flow, removed 59 selfloop flow, removed 4 redundant places. [2024-06-20 16:18:35,552 INFO L231 Difference]: Finished difference. Result has 320 places, 409 transitions, 4718 flow [2024-06-20 16:18:35,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4546, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4718, PETRI_PLACES=320, PETRI_TRANSITIONS=409} [2024-06-20 16:18:35,552 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 277 predicate places. [2024-06-20 16:18:35,552 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 409 transitions, 4718 flow [2024-06-20 16:18:35,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:35,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:18:35,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:18:35,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-20 16:18:35,553 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:18:35,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:18:35,554 INFO L85 PathProgramCache]: Analyzing trace with hash -2022303683, now seen corresponding path program 1 times [2024-06-20 16:18:35,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:18:35,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485511660] [2024-06-20 16:18:35,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:18:35,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:18:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:18:36,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:18:36,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:18:36,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485511660] [2024-06-20 16:18:36,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485511660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:18:36,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:18:36,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:18:36,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511599915] [2024-06-20 16:18:36,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:18:36,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:18:36,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:18:36,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:18:36,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:18:36,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:18:36,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 409 transitions, 4718 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:36,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:18:36,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:18:36,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:18:37,764 INFO L124 PetriNetUnfolderBase]: 3595/5710 cut-off events. [2024-06-20 16:18:37,764 INFO L125 PetriNetUnfolderBase]: For 968995/968997 co-relation queries the response was YES. [2024-06-20 16:18:37,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57783 conditions, 5710 events. 3595/5710 cut-off events. For 968995/968997 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 33985 event pairs, 788 based on Foata normal form. 4/5712 useless extension candidates. Maximal degree in co-relation 57636. Up to 5433 conditions per place. [2024-06-20 16:18:37,837 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 392 selfloop transitions, 48 changer transitions 0/444 dead transitions. [2024-06-20 16:18:37,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 444 transitions, 6101 flow [2024-06-20 16:18:37,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:18:37,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:18:37,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-20 16:18:37,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43154761904761907 [2024-06-20 16:18:37,839 INFO L175 Difference]: Start difference. First operand has 320 places, 409 transitions, 4718 flow. Second operand 8 states and 145 transitions. [2024-06-20 16:18:37,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 444 transitions, 6101 flow [2024-06-20 16:18:39,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 444 transitions, 5955 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-20 16:18:39,328 INFO L231 Difference]: Finished difference. Result has 323 places, 422 transitions, 4939 flow [2024-06-20 16:18:39,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4572, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4939, PETRI_PLACES=323, PETRI_TRANSITIONS=422} [2024-06-20 16:18:39,328 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 280 predicate places. [2024-06-20 16:18:39,328 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 422 transitions, 4939 flow [2024-06-20 16:18:39,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:39,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:18:39,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:18:39,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-20 16:18:39,329 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:18:39,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:18:39,329 INFO L85 PathProgramCache]: Analyzing trace with hash -2022303869, now seen corresponding path program 2 times [2024-06-20 16:18:39,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:18:39,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28592151] [2024-06-20 16:18:39,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:18:39,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:18:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:18:40,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:18:40,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:18:40,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28592151] [2024-06-20 16:18:40,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28592151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:18:40,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:18:40,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:18:40,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101466925] [2024-06-20 16:18:40,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:18:40,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:18:40,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:18:40,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:18:40,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:18:40,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:18:40,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 422 transitions, 4939 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:40,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:18:40,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:18:40,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:18:41,520 INFO L124 PetriNetUnfolderBase]: 3543/5670 cut-off events. [2024-06-20 16:18:41,521 INFO L125 PetriNetUnfolderBase]: For 1006639/1006641 co-relation queries the response was YES. [2024-06-20 16:18:41,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58711 conditions, 5670 events. 3543/5670 cut-off events. For 1006639/1006641 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 34158 event pairs, 761 based on Foata normal form. 4/5672 useless extension candidates. Maximal degree in co-relation 58562. Up to 5257 conditions per place. [2024-06-20 16:18:41,596 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 376 selfloop transitions, 51 changer transitions 0/450 dead transitions. [2024-06-20 16:18:41,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 450 transitions, 6287 flow [2024-06-20 16:18:41,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:18:41,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:18:41,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-20 16:18:41,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494047619047619 [2024-06-20 16:18:41,597 INFO L175 Difference]: Start difference. First operand has 323 places, 422 transitions, 4939 flow. Second operand 8 states and 151 transitions. [2024-06-20 16:18:41,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 450 transitions, 6287 flow [2024-06-20 16:18:43,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 450 transitions, 6149 flow, removed 61 selfloop flow, removed 3 redundant places. [2024-06-20 16:18:43,592 INFO L231 Difference]: Finished difference. Result has 328 places, 428 transitions, 5125 flow [2024-06-20 16:18:43,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4807, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5125, PETRI_PLACES=328, PETRI_TRANSITIONS=428} [2024-06-20 16:18:43,593 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 285 predicate places. [2024-06-20 16:18:43,593 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 428 transitions, 5125 flow [2024-06-20 16:18:43,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:43,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:18:43,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:18:43,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-20 16:18:43,594 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:18:43,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:18:43,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1111569699, now seen corresponding path program 3 times [2024-06-20 16:18:43,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:18:43,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123544371] [2024-06-20 16:18:43,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:18:43,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:18:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:18:44,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:18:44,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:18:44,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123544371] [2024-06-20 16:18:44,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123544371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:18:44,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:18:44,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:18:44,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181309665] [2024-06-20 16:18:44,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:18:44,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:18:44,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:18:44,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:18:44,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:18:44,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:18:44,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 428 transitions, 5125 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:44,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:18:44,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:18:44,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:18:45,699 INFO L124 PetriNetUnfolderBase]: 3551/5684 cut-off events. [2024-06-20 16:18:45,699 INFO L125 PetriNetUnfolderBase]: For 1031746/1031748 co-relation queries the response was YES. [2024-06-20 16:18:45,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59349 conditions, 5684 events. 3551/5684 cut-off events. For 1031746/1031748 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 34239 event pairs, 761 based on Foata normal form. 4/5686 useless extension candidates. Maximal degree in co-relation 59198. Up to 5363 conditions per place. [2024-06-20 16:18:45,784 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 392 selfloop transitions, 33 changer transitions 0/448 dead transitions. [2024-06-20 16:18:45,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 448 transitions, 6153 flow [2024-06-20 16:18:45,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:18:45,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:18:45,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-20 16:18:45,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255952380952381 [2024-06-20 16:18:45,785 INFO L175 Difference]: Start difference. First operand has 328 places, 428 transitions, 5125 flow. Second operand 8 states and 143 transitions. [2024-06-20 16:18:45,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 448 transitions, 6153 flow [2024-06-20 16:18:47,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 448 transitions, 5966 flow, removed 74 selfloop flow, removed 4 redundant places. [2024-06-20 16:18:47,657 INFO L231 Difference]: Finished difference. Result has 332 places, 431 transitions, 5124 flow [2024-06-20 16:18:47,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4964, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5124, PETRI_PLACES=332, PETRI_TRANSITIONS=431} [2024-06-20 16:18:47,658 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 289 predicate places. [2024-06-20 16:18:47,658 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 431 transitions, 5124 flow [2024-06-20 16:18:47,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:47,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:18:47,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:18:47,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-20 16:18:47,658 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:18:47,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:18:47,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1844935013, now seen corresponding path program 2 times [2024-06-20 16:18:47,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:18:47,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925168073] [2024-06-20 16:18:47,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:18:47,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:18:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:18:48,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:18:48,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:18:48,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925168073] [2024-06-20 16:18:48,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925168073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:18:48,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:18:48,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:18:48,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259245177] [2024-06-20 16:18:48,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:18:48,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:18:48,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:18:48,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:18:48,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:18:48,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:18:48,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 431 transitions, 5124 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:48,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:18:48,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:18:48,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:18:49,824 INFO L124 PetriNetUnfolderBase]: 3641/5778 cut-off events. [2024-06-20 16:18:49,824 INFO L125 PetriNetUnfolderBase]: For 1046769/1046771 co-relation queries the response was YES. [2024-06-20 16:18:49,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59973 conditions, 5778 events. 3641/5778 cut-off events. For 1046769/1046771 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 34406 event pairs, 792 based on Foata normal form. 4/5780 useless extension candidates. Maximal degree in co-relation 59820. Up to 5568 conditions per place. [2024-06-20 16:18:49,910 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 408 selfloop transitions, 39 changer transitions 0/451 dead transitions. [2024-06-20 16:18:49,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 451 transitions, 6141 flow [2024-06-20 16:18:49,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:18:49,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:18:49,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-20 16:18:49,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-20 16:18:49,911 INFO L175 Difference]: Start difference. First operand has 332 places, 431 transitions, 5124 flow. Second operand 8 states and 137 transitions. [2024-06-20 16:18:49,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 451 transitions, 6141 flow [2024-06-20 16:18:51,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 451 transitions, 6009 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-20 16:18:51,697 INFO L231 Difference]: Finished difference. Result has 334 places, 435 transitions, 5147 flow [2024-06-20 16:18:51,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4992, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5147, PETRI_PLACES=334, PETRI_TRANSITIONS=435} [2024-06-20 16:18:51,697 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 291 predicate places. [2024-06-20 16:18:51,698 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 435 transitions, 5147 flow [2024-06-20 16:18:51,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:51,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:18:51,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:18:51,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-20 16:18:51,698 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:18:51,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:18:51,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1845172163, now seen corresponding path program 3 times [2024-06-20 16:18:51,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:18:51,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104685201] [2024-06-20 16:18:51,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:18:51,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:18:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:18:52,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:18:52,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:18:52,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104685201] [2024-06-20 16:18:52,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104685201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:18:52,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:18:52,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:18:52,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536728050] [2024-06-20 16:18:52,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:18:52,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:18:52,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:18:52,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:18:52,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:18:52,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:18:52,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 435 transitions, 5147 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:52,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:18:52,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:18:52,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:18:53,875 INFO L124 PetriNetUnfolderBase]: 3651/5792 cut-off events. [2024-06-20 16:18:53,876 INFO L125 PetriNetUnfolderBase]: For 1065617/1065619 co-relation queries the response was YES. [2024-06-20 16:18:53,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60213 conditions, 5792 events. 3651/5792 cut-off events. For 1065617/1065619 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 34560 event pairs, 790 based on Foata normal form. 4/5794 useless extension candidates. Maximal degree in co-relation 60059. Up to 5566 conditions per place. [2024-06-20 16:18:53,962 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 408 selfloop transitions, 43 changer transitions 0/455 dead transitions. [2024-06-20 16:18:53,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 455 transitions, 6179 flow [2024-06-20 16:18:53,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:18:53,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:18:53,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-20 16:18:53,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-20 16:18:53,964 INFO L175 Difference]: Start difference. First operand has 334 places, 435 transitions, 5147 flow. Second operand 8 states and 140 transitions. [2024-06-20 16:18:53,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 455 transitions, 6179 flow [2024-06-20 16:18:55,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 455 transitions, 6058 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-20 16:18:55,690 INFO L231 Difference]: Finished difference. Result has 337 places, 438 transitions, 5184 flow [2024-06-20 16:18:55,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5026, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5184, PETRI_PLACES=337, PETRI_TRANSITIONS=438} [2024-06-20 16:18:55,690 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 294 predicate places. [2024-06-20 16:18:55,690 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 438 transitions, 5184 flow [2024-06-20 16:18:55,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:55,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:18:55,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:18:55,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-20 16:18:55,691 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:18:55,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:18:55,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1845292505, now seen corresponding path program 3 times [2024-06-20 16:18:55,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:18:55,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982505228] [2024-06-20 16:18:55,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:18:55,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:18:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:18:56,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:18:56,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:18:56,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982505228] [2024-06-20 16:18:56,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982505228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:18:56,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:18:56,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:18:56,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982685001] [2024-06-20 16:18:56,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:18:56,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:18:56,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:18:56,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:18:56,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:18:56,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:18:56,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 438 transitions, 5184 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:18:56,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:18:56,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:18:56,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:18:58,168 INFO L124 PetriNetUnfolderBase]: 3580/5723 cut-off events. [2024-06-20 16:18:58,169 INFO L125 PetriNetUnfolderBase]: For 1086748/1086748 co-relation queries the response was YES. [2024-06-20 16:18:58,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60078 conditions, 5723 events. 3580/5723 cut-off events. For 1086748/1086748 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 34429 event pairs, 749 based on Foata normal form. 2/5723 useless extension candidates. Maximal degree in co-relation 59923. Up to 5345 conditions per place. [2024-06-20 16:18:58,252 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 372 selfloop transitions, 62 changer transitions 0/459 dead transitions. [2024-06-20 16:18:58,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 459 transitions, 6259 flow [2024-06-20 16:18:58,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:18:58,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:18:58,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-20 16:18:58,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255952380952381 [2024-06-20 16:18:58,253 INFO L175 Difference]: Start difference. First operand has 337 places, 438 transitions, 5184 flow. Second operand 8 states and 143 transitions. [2024-06-20 16:18:58,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 459 transitions, 6259 flow [2024-06-20 16:19:00,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 459 transitions, 6129 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-20 16:19:00,315 INFO L231 Difference]: Finished difference. Result has 339 places, 444 transitions, 5361 flow [2024-06-20 16:19:00,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5054, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5361, PETRI_PLACES=339, PETRI_TRANSITIONS=444} [2024-06-20 16:19:00,316 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 296 predicate places. [2024-06-20 16:19:00,316 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 444 transitions, 5361 flow [2024-06-20 16:19:00,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:00,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:19:00,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:19:00,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-20 16:19:00,316 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:19:00,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:19:00,317 INFO L85 PathProgramCache]: Analyzing trace with hash -2140753691, now seen corresponding path program 1 times [2024-06-20 16:19:00,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:19:00,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81953213] [2024-06-20 16:19:00,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:19:00,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:19:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:19:01,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:19:01,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:19:01,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81953213] [2024-06-20 16:19:01,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81953213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:19:01,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:19:01,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:19:01,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012606183] [2024-06-20 16:19:01,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:19:01,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:19:01,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:19:01,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:19:01,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:19:01,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:19:01,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 444 transitions, 5361 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:01,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:19:01,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:19:01,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:19:03,214 INFO L124 PetriNetUnfolderBase]: 3588/5743 cut-off events. [2024-06-20 16:19:03,215 INFO L125 PetriNetUnfolderBase]: For 1111874/1111876 co-relation queries the response was YES. [2024-06-20 16:19:03,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60822 conditions, 5743 events. 3588/5743 cut-off events. For 1111874/1111876 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 34665 event pairs, 617 based on Foata normal form. 4/5745 useless extension candidates. Maximal degree in co-relation 60666. Up to 5287 conditions per place. [2024-06-20 16:19:03,309 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 391 selfloop transitions, 58 changer transitions 0/474 dead transitions. [2024-06-20 16:19:03,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 474 transitions, 6639 flow [2024-06-20 16:19:03,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:19:03,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:19:03,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-20 16:19:03,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-20 16:19:03,310 INFO L175 Difference]: Start difference. First operand has 339 places, 444 transitions, 5361 flow. Second operand 8 states and 153 transitions. [2024-06-20 16:19:03,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 474 transitions, 6639 flow [2024-06-20 16:19:04,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 474 transitions, 6372 flow, removed 67 selfloop flow, removed 6 redundant places. [2024-06-20 16:19:04,785 INFO L231 Difference]: Finished difference. Result has 341 places, 448 transitions, 5319 flow [2024-06-20 16:19:04,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5094, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5319, PETRI_PLACES=341, PETRI_TRANSITIONS=448} [2024-06-20 16:19:04,786 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 298 predicate places. [2024-06-20 16:19:04,786 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 448 transitions, 5319 flow [2024-06-20 16:19:04,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:04,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:19:04,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:19:04,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-20 16:19:04,787 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:19:04,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:19:04,787 INFO L85 PathProgramCache]: Analyzing trace with hash -2132182811, now seen corresponding path program 2 times [2024-06-20 16:19:04,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:19:04,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112821287] [2024-06-20 16:19:04,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:19:04,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:19:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:19:05,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:19:05,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:19:05,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112821287] [2024-06-20 16:19:05,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112821287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:19:05,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:19:05,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:19:05,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179427178] [2024-06-20 16:19:05,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:19:05,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:19:05,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:19:05,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:19:05,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:19:05,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:19:05,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 448 transitions, 5319 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:05,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:19:05,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:19:05,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:19:07,497 INFO L124 PetriNetUnfolderBase]: 3596/5753 cut-off events. [2024-06-20 16:19:07,497 INFO L125 PetriNetUnfolderBase]: For 1132137/1132139 co-relation queries the response was YES. [2024-06-20 16:19:07,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61157 conditions, 5753 events. 3596/5753 cut-off events. For 1132137/1132139 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 34767 event pairs, 754 based on Foata normal form. 4/5755 useless extension candidates. Maximal degree in co-relation 61000. Up to 5367 conditions per place. [2024-06-20 16:19:07,575 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 386 selfloop transitions, 60 changer transitions 0/471 dead transitions. [2024-06-20 16:19:07,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 471 transitions, 6331 flow [2024-06-20 16:19:07,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:19:07,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:19:07,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-20 16:19:07,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-20 16:19:07,576 INFO L175 Difference]: Start difference. First operand has 341 places, 448 transitions, 5319 flow. Second operand 8 states and 148 transitions. [2024-06-20 16:19:07,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 471 transitions, 6331 flow [2024-06-20 16:19:09,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 471 transitions, 6182 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-20 16:19:09,132 INFO L231 Difference]: Finished difference. Result has 345 places, 450 transitions, 5354 flow [2024-06-20 16:19:09,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5190, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5354, PETRI_PLACES=345, PETRI_TRANSITIONS=450} [2024-06-20 16:19:09,133 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 302 predicate places. [2024-06-20 16:19:09,133 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 450 transitions, 5354 flow [2024-06-20 16:19:09,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:09,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:19:09,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:19:09,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-20 16:19:09,133 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:19:09,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:19:09,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1845295481, now seen corresponding path program 3 times [2024-06-20 16:19:09,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:19:09,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114820937] [2024-06-20 16:19:09,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:19:09,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:19:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:19:10,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:19:10,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:19:10,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114820937] [2024-06-20 16:19:10,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114820937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:19:10,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:19:10,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:19:10,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22175906] [2024-06-20 16:19:10,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:19:10,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:19:10,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:19:10,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:19:10,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:19:10,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:19:10,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 450 transitions, 5354 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:10,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:19:10,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:19:10,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:19:11,810 INFO L124 PetriNetUnfolderBase]: 3605/5756 cut-off events. [2024-06-20 16:19:11,810 INFO L125 PetriNetUnfolderBase]: For 1152038/1152038 co-relation queries the response was YES. [2024-06-20 16:19:11,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61412 conditions, 5756 events. 3605/5756 cut-off events. For 1152038/1152038 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 34628 event pairs, 749 based on Foata normal form. 2/5756 useless extension candidates. Maximal degree in co-relation 61253. Up to 5378 conditions per place. [2024-06-20 16:19:11,894 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 385 selfloop transitions, 58 changer transitions 0/468 dead transitions. [2024-06-20 16:19:11,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 468 transitions, 6326 flow [2024-06-20 16:19:11,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:19:11,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:19:11,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-20 16:19:11,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255952380952381 [2024-06-20 16:19:11,895 INFO L175 Difference]: Start difference. First operand has 345 places, 450 transitions, 5354 flow. Second operand 8 states and 143 transitions. [2024-06-20 16:19:11,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 468 transitions, 6326 flow [2024-06-20 16:19:13,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 468 transitions, 6184 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-20 16:19:13,816 INFO L231 Difference]: Finished difference. Result has 347 places, 452 transitions, 5376 flow [2024-06-20 16:19:13,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5212, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5376, PETRI_PLACES=347, PETRI_TRANSITIONS=452} [2024-06-20 16:19:13,817 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 304 predicate places. [2024-06-20 16:19:13,817 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 452 transitions, 5376 flow [2024-06-20 16:19:13,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:13,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:19:13,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:19:13,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-20 16:19:13,817 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:19:13,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:19:13,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1873462769, now seen corresponding path program 1 times [2024-06-20 16:19:13,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:19:13,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969746914] [2024-06-20 16:19:13,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:19:13,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:19:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:19:14,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:19:14,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:19:14,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969746914] [2024-06-20 16:19:14,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969746914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:19:14,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:19:14,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:19:14,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112819274] [2024-06-20 16:19:14,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:19:14,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:19:14,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:19:14,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:19:14,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:19:14,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:19:14,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 452 transitions, 5376 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:14,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:19:14,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:19:14,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:19:16,545 INFO L124 PetriNetUnfolderBase]: 3705/5870 cut-off events. [2024-06-20 16:19:16,545 INFO L125 PetriNetUnfolderBase]: For 1180979/1180979 co-relation queries the response was YES. [2024-06-20 16:19:16,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62325 conditions, 5870 events. 3705/5870 cut-off events. For 1180979/1180979 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 35005 event pairs, 779 based on Foata normal form. 4/5872 useless extension candidates. Maximal degree in co-relation 62165. Up to 5493 conditions per place. [2024-06-20 16:19:16,624 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 390 selfloop transitions, 86 changer transitions 0/480 dead transitions. [2024-06-20 16:19:16,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 480 transitions, 6782 flow [2024-06-20 16:19:16,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:19:16,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:19:16,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-20 16:19:16,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-20 16:19:16,627 INFO L175 Difference]: Start difference. First operand has 347 places, 452 transitions, 5376 flow. Second operand 9 states and 162 transitions. [2024-06-20 16:19:16,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 480 transitions, 6782 flow [2024-06-20 16:19:18,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 480 transitions, 6640 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-20 16:19:18,574 INFO L231 Difference]: Finished difference. Result has 350 places, 458 transitions, 5574 flow [2024-06-20 16:19:18,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5234, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5574, PETRI_PLACES=350, PETRI_TRANSITIONS=458} [2024-06-20 16:19:18,575 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 307 predicate places. [2024-06-20 16:19:18,575 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 458 transitions, 5574 flow [2024-06-20 16:19:18,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:18,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:19:18,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:19:18,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-20 16:19:18,576 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:19:18,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:19:18,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1106213453, now seen corresponding path program 4 times [2024-06-20 16:19:18,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:19:18,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350717938] [2024-06-20 16:19:18,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:19:18,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:19:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:19:19,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:19:19,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:19:19,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350717938] [2024-06-20 16:19:19,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350717938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:19:19,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:19:19,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:19:19,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020066807] [2024-06-20 16:19:19,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:19:19,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:19:19,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:19:19,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:19:19,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:19:19,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:19:19,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 458 transitions, 5574 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:19,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:19:19,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:19:19,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:19:21,136 INFO L124 PetriNetUnfolderBase]: 3666/5852 cut-off events. [2024-06-20 16:19:21,136 INFO L125 PetriNetUnfolderBase]: For 1224172/1224176 co-relation queries the response was YES. [2024-06-20 16:19:21,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63714 conditions, 5852 events. 3666/5852 cut-off events. For 1224172/1224176 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 35380 event pairs, 769 based on Foata normal form. 6/5855 useless extension candidates. Maximal degree in co-relation 63553. Up to 5373 conditions per place. [2024-06-20 16:19:21,213 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 403 selfloop transitions, 65 changer transitions 0/493 dead transitions. [2024-06-20 16:19:21,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 493 transitions, 7378 flow [2024-06-20 16:19:21,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:19:21,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:19:21,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-20 16:19:21,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-20 16:19:21,215 INFO L175 Difference]: Start difference. First operand has 350 places, 458 transitions, 5574 flow. Second operand 10 states and 182 transitions. [2024-06-20 16:19:21,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 493 transitions, 7378 flow [2024-06-20 16:19:23,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 493 transitions, 7244 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-20 16:19:23,292 INFO L231 Difference]: Finished difference. Result has 355 places, 467 transitions, 5931 flow [2024-06-20 16:19:23,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5440, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5931, PETRI_PLACES=355, PETRI_TRANSITIONS=467} [2024-06-20 16:19:23,292 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 312 predicate places. [2024-06-20 16:19:23,292 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 467 transitions, 5931 flow [2024-06-20 16:19:23,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:23,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:19:23,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:19:23,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-20 16:19:23,293 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:19:23,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:19:23,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1106541743, now seen corresponding path program 5 times [2024-06-20 16:19:23,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:19:23,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119185910] [2024-06-20 16:19:23,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:19:23,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:19:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:19:24,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:19:24,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:19:24,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119185910] [2024-06-20 16:19:24,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119185910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:19:24,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:19:24,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:19:24,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624866173] [2024-06-20 16:19:24,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:19:24,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:19:24,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:19:24,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:19:24,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:19:24,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:19:24,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 467 transitions, 5931 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:24,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:19:24,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:19:24,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:19:25,757 INFO L124 PetriNetUnfolderBase]: 3661/5841 cut-off events. [2024-06-20 16:19:25,758 INFO L125 PetriNetUnfolderBase]: For 1240789/1240793 co-relation queries the response was YES. [2024-06-20 16:19:25,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64033 conditions, 5841 events. 3661/5841 cut-off events. For 1240789/1240793 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 35261 event pairs, 764 based on Foata normal form. 6/5844 useless extension candidates. Maximal degree in co-relation 63870. Up to 5367 conditions per place. [2024-06-20 16:19:25,836 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 397 selfloop transitions, 64 changer transitions 0/486 dead transitions. [2024-06-20 16:19:25,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 486 transitions, 7139 flow [2024-06-20 16:19:25,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:19:25,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:19:25,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-20 16:19:25,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-20 16:19:25,837 INFO L175 Difference]: Start difference. First operand has 355 places, 467 transitions, 5931 flow. Second operand 8 states and 148 transitions. [2024-06-20 16:19:25,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 486 transitions, 7139 flow [2024-06-20 16:19:28,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 486 transitions, 6828 flow, removed 125 selfloop flow, removed 5 redundant places. [2024-06-20 16:19:28,058 INFO L231 Difference]: Finished difference. Result has 358 places, 467 transitions, 5754 flow [2024-06-20 16:19:28,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5620, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5754, PETRI_PLACES=358, PETRI_TRANSITIONS=467} [2024-06-20 16:19:28,059 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 315 predicate places. [2024-06-20 16:19:28,059 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 467 transitions, 5754 flow [2024-06-20 16:19:28,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:28,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:19:28,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:19:28,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-20 16:19:28,059 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:19:28,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:19:28,060 INFO L85 PathProgramCache]: Analyzing trace with hash 697242337, now seen corresponding path program 6 times [2024-06-20 16:19:28,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:19:28,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495200369] [2024-06-20 16:19:28,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:19:28,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:19:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:19:28,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:19:28,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:19:28,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495200369] [2024-06-20 16:19:28,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495200369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:19:28,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:19:28,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:19:28,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638224476] [2024-06-20 16:19:28,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:19:28,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:19:28,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:19:28,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:19:28,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:19:29,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:19:29,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 467 transitions, 5754 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:29,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:19:29,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:19:29,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:19:30,558 INFO L124 PetriNetUnfolderBase]: 3655/5833 cut-off events. [2024-06-20 16:19:30,559 INFO L125 PetriNetUnfolderBase]: For 1246833/1246837 co-relation queries the response was YES. [2024-06-20 16:19:30,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63714 conditions, 5833 events. 3655/5833 cut-off events. For 1246833/1246837 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 35224 event pairs, 764 based on Foata normal form. 6/5836 useless extension candidates. Maximal degree in co-relation 63549. Up to 5389 conditions per place. [2024-06-20 16:19:30,635 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 411 selfloop transitions, 51 changer transitions 0/487 dead transitions. [2024-06-20 16:19:30,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 487 transitions, 6754 flow [2024-06-20 16:19:30,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:19:30,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:19:30,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-20 16:19:30,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-20 16:19:30,637 INFO L175 Difference]: Start difference. First operand has 358 places, 467 transitions, 5754 flow. Second operand 8 states and 150 transitions. [2024-06-20 16:19:30,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 487 transitions, 6754 flow [2024-06-20 16:19:32,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 487 transitions, 6570 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-20 16:19:32,537 INFO L231 Difference]: Finished difference. Result has 359 places, 467 transitions, 5680 flow [2024-06-20 16:19:32,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5570, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5680, PETRI_PLACES=359, PETRI_TRANSITIONS=467} [2024-06-20 16:19:32,538 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 316 predicate places. [2024-06-20 16:19:32,538 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 467 transitions, 5680 flow [2024-06-20 16:19:32,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:32,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:19:32,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:19:32,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-20 16:19:32,539 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:19:32,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:19:32,539 INFO L85 PathProgramCache]: Analyzing trace with hash 697362493, now seen corresponding path program 4 times [2024-06-20 16:19:32,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:19:32,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443724814] [2024-06-20 16:19:32,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:19:32,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:19:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:19:33,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:19:33,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:19:33,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443724814] [2024-06-20 16:19:33,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443724814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:19:33,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:19:33,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:19:33,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322080627] [2024-06-20 16:19:33,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:19:33,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:19:33,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:19:33,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:19:33,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:19:33,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:19:33,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 467 transitions, 5680 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:33,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:19:33,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:19:33,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:19:34,723 INFO L124 PetriNetUnfolderBase]: 3753/5938 cut-off events. [2024-06-20 16:19:34,723 INFO L125 PetriNetUnfolderBase]: For 1272377/1272381 co-relation queries the response was YES. [2024-06-20 16:19:34,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64719 conditions, 5938 events. 3753/5938 cut-off events. For 1272377/1272381 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 35450 event pairs, 796 based on Foata normal form. 6/5941 useless extension candidates. Maximal degree in co-relation 64553. Up to 5557 conditions per place. [2024-06-20 16:19:34,982 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 410 selfloop transitions, 81 changer transitions 0/495 dead transitions. [2024-06-20 16:19:34,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 495 transitions, 7386 flow [2024-06-20 16:19:34,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:19:34,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:19:34,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-20 16:19:34,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2024-06-20 16:19:34,983 INFO L175 Difference]: Start difference. First operand has 359 places, 467 transitions, 5680 flow. Second operand 8 states and 146 transitions. [2024-06-20 16:19:34,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 495 transitions, 7386 flow [2024-06-20 16:19:37,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 495 transitions, 7250 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-20 16:19:37,225 INFO L231 Difference]: Finished difference. Result has 360 places, 473 transitions, 5914 flow [2024-06-20 16:19:37,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5544, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5914, PETRI_PLACES=360, PETRI_TRANSITIONS=473} [2024-06-20 16:19:37,226 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 317 predicate places. [2024-06-20 16:19:37,226 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 473 transitions, 5914 flow [2024-06-20 16:19:37,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:37,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:19:37,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:19:37,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-20 16:19:37,227 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:19:37,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:19:37,227 INFO L85 PathProgramCache]: Analyzing trace with hash 697362307, now seen corresponding path program 7 times [2024-06-20 16:19:37,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:19:37,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296592849] [2024-06-20 16:19:37,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:19:37,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:19:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:19:37,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:19:37,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:19:37,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296592849] [2024-06-20 16:19:37,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296592849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:19:37,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:19:37,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:19:37,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565219014] [2024-06-20 16:19:37,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:19:37,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:19:37,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:19:37,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:19:37,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:19:38,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:19:38,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 473 transitions, 5914 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:38,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:19:38,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:19:38,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:19:39,515 INFO L124 PetriNetUnfolderBase]: 3689/5885 cut-off events. [2024-06-20 16:19:39,516 INFO L125 PetriNetUnfolderBase]: For 1311447/1311451 co-relation queries the response was YES. [2024-06-20 16:19:39,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65373 conditions, 5885 events. 3689/5885 cut-off events. For 1311447/1311451 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 35597 event pairs, 765 based on Foata normal form. 6/5888 useless extension candidates. Maximal degree in co-relation 65206. Up to 5283 conditions per place. [2024-06-20 16:19:39,754 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 375 selfloop transitions, 99 changer transitions 0/501 dead transitions. [2024-06-20 16:19:39,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 501 transitions, 7642 flow [2024-06-20 16:19:39,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:19:39,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:19:39,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-20 16:19:39,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-20 16:19:39,755 INFO L175 Difference]: Start difference. First operand has 360 places, 473 transitions, 5914 flow. Second operand 8 states and 153 transitions. [2024-06-20 16:19:39,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 501 transitions, 7642 flow [2024-06-20 16:19:41,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 501 transitions, 7421 flow, removed 70 selfloop flow, removed 4 redundant places. [2024-06-20 16:19:41,923 INFO L231 Difference]: Finished difference. Result has 364 places, 479 transitions, 6151 flow [2024-06-20 16:19:41,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5693, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6151, PETRI_PLACES=364, PETRI_TRANSITIONS=479} [2024-06-20 16:19:41,923 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 321 predicate places. [2024-06-20 16:19:41,923 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 479 transitions, 6151 flow [2024-06-20 16:19:41,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:41,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:19:41,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:19:41,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-20 16:19:41,924 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:19:41,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:19:41,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1051862497, now seen corresponding path program 8 times [2024-06-20 16:19:41,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:19:41,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11613602] [2024-06-20 16:19:41,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:19:41,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:19:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:19:42,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:19:42,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:19:42,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11613602] [2024-06-20 16:19:42,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11613602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:19:42,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:19:42,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:19:42,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503026108] [2024-06-20 16:19:42,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:19:42,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:19:42,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:19:42,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:19:42,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:19:42,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:19:42,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 479 transitions, 6151 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:42,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:19:42,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:19:42,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:19:44,095 INFO L124 PetriNetUnfolderBase]: 3715/5921 cut-off events. [2024-06-20 16:19:44,095 INFO L125 PetriNetUnfolderBase]: For 1354896/1354900 co-relation queries the response was YES. [2024-06-20 16:19:44,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66831 conditions, 5921 events. 3715/5921 cut-off events. For 1354896/1354900 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 35740 event pairs, 767 based on Foata normal form. 6/5924 useless extension candidates. Maximal degree in co-relation 66662. Up to 5308 conditions per place. [2024-06-20 16:19:44,341 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 368 selfloop transitions, 109 changer transitions 0/504 dead transitions. [2024-06-20 16:19:44,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 504 transitions, 7889 flow [2024-06-20 16:19:44,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:19:44,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:19:44,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-20 16:19:44,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-20 16:19:44,342 INFO L175 Difference]: Start difference. First operand has 364 places, 479 transitions, 6151 flow. Second operand 8 states and 150 transitions. [2024-06-20 16:19:44,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 504 transitions, 7889 flow [2024-06-20 16:19:46,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 504 transitions, 7565 flow, removed 119 selfloop flow, removed 4 redundant places. [2024-06-20 16:19:46,814 INFO L231 Difference]: Finished difference. Result has 368 places, 485 transitions, 6311 flow [2024-06-20 16:19:46,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5907, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6311, PETRI_PLACES=368, PETRI_TRANSITIONS=485} [2024-06-20 16:19:46,814 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 325 predicate places. [2024-06-20 16:19:46,815 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 485 transitions, 6311 flow [2024-06-20 16:19:46,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:46,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:19:46,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:19:46,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-20 16:19:46,815 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:19:46,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:19:46,816 INFO L85 PathProgramCache]: Analyzing trace with hash 790748529, now seen corresponding path program 5 times [2024-06-20 16:19:46,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:19:46,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598417550] [2024-06-20 16:19:46,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:19:46,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:19:46,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:19:47,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:19:47,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:19:47,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598417550] [2024-06-20 16:19:47,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598417550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:19:47,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:19:47,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:19:47,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544023239] [2024-06-20 16:19:47,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:19:47,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:19:47,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:19:47,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:19:47,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:19:47,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:19:47,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 485 transitions, 6311 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:47,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:19:47,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:19:47,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:19:49,012 INFO L124 PetriNetUnfolderBase]: 3823/6047 cut-off events. [2024-06-20 16:19:49,012 INFO L125 PetriNetUnfolderBase]: For 1382368/1382372 co-relation queries the response was YES. [2024-06-20 16:19:49,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67918 conditions, 6047 events. 3823/6047 cut-off events. For 1382368/1382372 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 36274 event pairs, 796 based on Foata normal form. 6/6050 useless extension candidates. Maximal degree in co-relation 67747. Up to 5643 conditions per place. [2024-06-20 16:19:49,106 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 418 selfloop transitions, 88 changer transitions 0/510 dead transitions. [2024-06-20 16:19:49,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 510 transitions, 7963 flow [2024-06-20 16:19:49,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:19:49,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:19:49,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-20 16:19:49,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255952380952381 [2024-06-20 16:19:49,107 INFO L175 Difference]: Start difference. First operand has 368 places, 485 transitions, 6311 flow. Second operand 8 states and 143 transitions. [2024-06-20 16:19:49,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 510 transitions, 7963 flow [2024-06-20 16:19:52,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 510 transitions, 7731 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-20 16:19:52,040 INFO L231 Difference]: Finished difference. Result has 372 places, 491 transitions, 6373 flow [2024-06-20 16:19:52,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6079, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6373, PETRI_PLACES=372, PETRI_TRANSITIONS=491} [2024-06-20 16:19:52,041 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 329 predicate places. [2024-06-20 16:19:52,041 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 491 transitions, 6373 flow [2024-06-20 16:19:52,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:52,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:19:52,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:19:52,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-20 16:19:52,042 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:19:52,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:19:52,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1051625533, now seen corresponding path program 6 times [2024-06-20 16:19:52,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:19:52,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173049225] [2024-06-20 16:19:52,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:19:52,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:19:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:19:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:19:52,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:19:52,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173049225] [2024-06-20 16:19:52,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173049225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:19:52,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:19:52,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:19:52,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842340721] [2024-06-20 16:19:52,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:19:52,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:19:52,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:19:52,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:19:52,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:19:52,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:19:52,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 491 transitions, 6373 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:52,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:19:52,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:19:52,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:19:54,398 INFO L124 PetriNetUnfolderBase]: 3817/6037 cut-off events. [2024-06-20 16:19:54,398 INFO L125 PetriNetUnfolderBase]: For 1392055/1392059 co-relation queries the response was YES. [2024-06-20 16:19:54,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67667 conditions, 6037 events. 3817/6037 cut-off events. For 1392055/1392059 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 36099 event pairs, 796 based on Foata normal form. 6/6040 useless extension candidates. Maximal degree in co-relation 67495. Up to 5638 conditions per place. [2024-06-20 16:19:54,496 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 419 selfloop transitions, 86 changer transitions 0/509 dead transitions. [2024-06-20 16:19:54,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 509 transitions, 7693 flow [2024-06-20 16:19:54,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:19:54,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:19:54,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-20 16:19:54,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255952380952381 [2024-06-20 16:19:54,498 INFO L175 Difference]: Start difference. First operand has 372 places, 491 transitions, 6373 flow. Second operand 8 states and 143 transitions. [2024-06-20 16:19:54,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 509 transitions, 7693 flow [2024-06-20 16:19:57,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 509 transitions, 7496 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-20 16:19:57,257 INFO L231 Difference]: Finished difference. Result has 376 places, 491 transitions, 6354 flow [2024-06-20 16:19:57,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6176, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6354, PETRI_PLACES=376, PETRI_TRANSITIONS=491} [2024-06-20 16:19:57,257 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 333 predicate places. [2024-06-20 16:19:57,257 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 491 transitions, 6354 flow [2024-06-20 16:19:57,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:57,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:19:57,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:19:57,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-20 16:19:57,258 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:19:57,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:19:57,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1051625347, now seen corresponding path program 9 times [2024-06-20 16:19:57,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:19:57,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755134041] [2024-06-20 16:19:57,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:19:57,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:19:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:19:58,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:19:58,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:19:58,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755134041] [2024-06-20 16:19:58,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755134041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:19:58,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:19:58,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:19:58,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804283517] [2024-06-20 16:19:58,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:19:58,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:19:58,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:19:58,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:19:58,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:19:58,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:19:58,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 491 transitions, 6354 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:19:58,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:19:58,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:19:58,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:19:59,642 INFO L124 PetriNetUnfolderBase]: 3725/5943 cut-off events. [2024-06-20 16:19:59,642 INFO L125 PetriNetUnfolderBase]: For 1404088/1404092 co-relation queries the response was YES. [2024-06-20 16:19:59,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66981 conditions, 5943 events. 3725/5943 cut-off events. For 1404088/1404092 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 36009 event pairs, 765 based on Foata normal form. 6/5946 useless extension candidates. Maximal degree in co-relation 66808. Up to 5323 conditions per place. [2024-06-20 16:19:59,741 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 372 selfloop transitions, 108 changer transitions 0/509 dead transitions. [2024-06-20 16:19:59,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 509 transitions, 7626 flow [2024-06-20 16:19:59,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:19:59,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:19:59,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-20 16:19:59,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44345238095238093 [2024-06-20 16:19:59,742 INFO L175 Difference]: Start difference. First operand has 376 places, 491 transitions, 6354 flow. Second operand 8 states and 149 transitions. [2024-06-20 16:19:59,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 509 transitions, 7626 flow [2024-06-20 16:20:02,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 509 transitions, 7376 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-20 16:20:02,468 INFO L231 Difference]: Finished difference. Result has 377 places, 491 transitions, 6326 flow [2024-06-20 16:20:02,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6104, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6326, PETRI_PLACES=377, PETRI_TRANSITIONS=491} [2024-06-20 16:20:02,469 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 334 predicate places. [2024-06-20 16:20:02,469 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 491 transitions, 6326 flow [2024-06-20 16:20:02,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:02,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:02,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:02,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-20 16:20:02,469 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:02,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:02,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1279764133, now seen corresponding path program 7 times [2024-06-20 16:20:02,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:02,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52127948] [2024-06-20 16:20:02,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:02,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:03,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:03,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:03,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52127948] [2024-06-20 16:20:03,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52127948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:03,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:03,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:20:03,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521108719] [2024-06-20 16:20:03,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:03,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:20:03,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:03,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:20:03,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:20:03,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:20:03,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 491 transitions, 6326 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:03,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:03,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:20:03,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:04,876 INFO L124 PetriNetUnfolderBase]: 3821/6049 cut-off events. [2024-06-20 16:20:04,876 INFO L125 PetriNetUnfolderBase]: For 1423997/1424001 co-relation queries the response was YES. [2024-06-20 16:20:04,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67827 conditions, 6049 events. 3821/6049 cut-off events. For 1423997/1424001 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 36240 event pairs, 796 based on Foata normal form. 6/6052 useless extension candidates. Maximal degree in co-relation 67653. Up to 5803 conditions per place. [2024-06-20 16:20:04,974 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 461 selfloop transitions, 42 changer transitions 0/507 dead transitions. [2024-06-20 16:20:04,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 507 transitions, 7682 flow [2024-06-20 16:20:04,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:20:04,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:20:04,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-20 16:20:04,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-06-20 16:20:04,976 INFO L175 Difference]: Start difference. First operand has 377 places, 491 transitions, 6326 flow. Second operand 8 states and 134 transitions. [2024-06-20 16:20:04,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 507 transitions, 7682 flow [2024-06-20 16:20:07,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 507 transitions, 7454 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-20 16:20:07,489 INFO L231 Difference]: Finished difference. Result has 378 places, 494 transitions, 6260 flow [2024-06-20 16:20:07,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6098, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6260, PETRI_PLACES=378, PETRI_TRANSITIONS=494} [2024-06-20 16:20:07,489 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 335 predicate places. [2024-06-20 16:20:07,490 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 494 transitions, 6260 flow [2024-06-20 16:20:07,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:07,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:07,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:07,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-20 16:20:07,490 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:07,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:07,490 INFO L85 PathProgramCache]: Analyzing trace with hash -745277571, now seen corresponding path program 8 times [2024-06-20 16:20:07,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:07,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995532179] [2024-06-20 16:20:07,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:07,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:08,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:08,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:08,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995532179] [2024-06-20 16:20:08,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995532179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:08,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:08,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:20:08,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972631437] [2024-06-20 16:20:08,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:08,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:20:08,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:08,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:20:08,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:20:08,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:20:08,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 494 transitions, 6260 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:08,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:08,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:20:08,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:09,770 INFO L124 PetriNetUnfolderBase]: 3831/6057 cut-off events. [2024-06-20 16:20:09,770 INFO L125 PetriNetUnfolderBase]: For 1445722/1445726 co-relation queries the response was YES. [2024-06-20 16:20:09,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67893 conditions, 6057 events. 3831/6057 cut-off events. For 1445722/1445726 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 36260 event pairs, 798 based on Foata normal form. 6/6060 useless extension candidates. Maximal degree in co-relation 67718. Up to 5816 conditions per place. [2024-06-20 16:20:09,856 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 459 selfloop transitions, 47 changer transitions 0/510 dead transitions. [2024-06-20 16:20:09,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 510 transitions, 7611 flow [2024-06-20 16:20:09,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:20:09,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:20:09,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-20 16:20:09,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-20 16:20:09,857 INFO L175 Difference]: Start difference. First operand has 378 places, 494 transitions, 6260 flow. Second operand 8 states and 133 transitions. [2024-06-20 16:20:09,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 510 transitions, 7611 flow [2024-06-20 16:20:12,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 510 transitions, 7436 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-20 16:20:12,984 INFO L231 Difference]: Finished difference. Result has 380 places, 497 transitions, 6250 flow [2024-06-20 16:20:12,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6085, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6250, PETRI_PLACES=380, PETRI_TRANSITIONS=497} [2024-06-20 16:20:12,985 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 337 predicate places. [2024-06-20 16:20:12,985 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 497 transitions, 6250 flow [2024-06-20 16:20:12,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:12,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:12,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:12,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-20 16:20:12,986 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:12,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:12,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1322025801, now seen corresponding path program 10 times [2024-06-20 16:20:12,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:12,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856292189] [2024-06-20 16:20:12,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:12,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:13,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:13,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:13,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856292189] [2024-06-20 16:20:13,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856292189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:13,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:13,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:20:13,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733762026] [2024-06-20 16:20:13,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:13,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:20:13,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:13,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:20:13,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:20:13,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:20:13,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 497 transitions, 6250 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:13,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:13,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:20:13,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:15,248 INFO L124 PetriNetUnfolderBase]: 3749/5987 cut-off events. [2024-06-20 16:20:15,249 INFO L125 PetriNetUnfolderBase]: For 1470698/1470702 co-relation queries the response was YES. [2024-06-20 16:20:15,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67617 conditions, 5987 events. 3749/5987 cut-off events. For 1470698/1470702 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 36366 event pairs, 760 based on Foata normal form. 6/5990 useless extension candidates. Maximal degree in co-relation 67441. Up to 5582 conditions per place. [2024-06-20 16:20:15,501 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 432 selfloop transitions, 51 changer transitions 0/514 dead transitions. [2024-06-20 16:20:15,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 514 transitions, 7603 flow [2024-06-20 16:20:15,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:20:15,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:20:15,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-20 16:20:15,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41964285714285715 [2024-06-20 16:20:15,503 INFO L175 Difference]: Start difference. First operand has 380 places, 497 transitions, 6250 flow. Second operand 8 states and 141 transitions. [2024-06-20 16:20:15,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 514 transitions, 7603 flow [2024-06-20 16:20:18,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 514 transitions, 7471 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-20 16:20:18,129 INFO L231 Difference]: Finished difference. Result has 383 places, 500 transitions, 6319 flow [2024-06-20 16:20:18,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6118, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6319, PETRI_PLACES=383, PETRI_TRANSITIONS=500} [2024-06-20 16:20:18,129 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 340 predicate places. [2024-06-20 16:20:18,129 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 500 transitions, 6319 flow [2024-06-20 16:20:18,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:18,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:18,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:18,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-20 16:20:18,130 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:18,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:18,131 INFO L85 PathProgramCache]: Analyzing trace with hash -700569957, now seen corresponding path program 9 times [2024-06-20 16:20:18,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:18,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059001719] [2024-06-20 16:20:18,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:18,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:18,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:18,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:18,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059001719] [2024-06-20 16:20:18,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059001719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:18,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:18,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:20:18,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329436785] [2024-06-20 16:20:18,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:18,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:20:18,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:18,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:20:18,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:20:18,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:20:18,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 500 transitions, 6319 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:18,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:18,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:20:18,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:20,450 INFO L124 PetriNetUnfolderBase]: 3851/6089 cut-off events. [2024-06-20 16:20:20,450 INFO L125 PetriNetUnfolderBase]: For 1491086/1491090 co-relation queries the response was YES. [2024-06-20 16:20:20,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68443 conditions, 6089 events. 3851/6089 cut-off events. For 1491086/1491090 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 36495 event pairs, 804 based on Foata normal form. 6/6092 useless extension candidates. Maximal degree in co-relation 68267. Up to 5864 conditions per place. [2024-06-20 16:20:20,547 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 473 selfloop transitions, 38 changer transitions 0/515 dead transitions. [2024-06-20 16:20:20,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 515 transitions, 7455 flow [2024-06-20 16:20:20,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:20:20,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:20:20,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-20 16:20:20,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3898809523809524 [2024-06-20 16:20:20,548 INFO L175 Difference]: Start difference. First operand has 383 places, 500 transitions, 6319 flow. Second operand 8 states and 131 transitions. [2024-06-20 16:20:20,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 515 transitions, 7455 flow [2024-06-20 16:20:23,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 515 transitions, 7216 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-20 16:20:23,190 INFO L231 Difference]: Finished difference. Result has 385 places, 504 transitions, 6242 flow [2024-06-20 16:20:23,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6080, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6242, PETRI_PLACES=385, PETRI_TRANSITIONS=504} [2024-06-20 16:20:23,190 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 342 predicate places. [2024-06-20 16:20:23,190 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 504 transitions, 6242 flow [2024-06-20 16:20:23,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:23,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:23,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:23,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-20 16:20:23,191 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:23,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:23,191 INFO L85 PathProgramCache]: Analyzing trace with hash -650377921, now seen corresponding path program 11 times [2024-06-20 16:20:23,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:23,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971276848] [2024-06-20 16:20:23,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:23,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:24,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:24,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:24,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971276848] [2024-06-20 16:20:24,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971276848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:24,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:24,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:20:24,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940501277] [2024-06-20 16:20:24,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:24,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:20:24,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:24,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:20:24,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:20:24,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:20:24,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 504 transitions, 6242 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:24,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:24,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:20:24,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:25,530 INFO L124 PetriNetUnfolderBase]: 3752/5996 cut-off events. [2024-06-20 16:20:25,530 INFO L125 PetriNetUnfolderBase]: For 1500919/1500923 co-relation queries the response was YES. [2024-06-20 16:20:25,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67548 conditions, 5996 events. 3752/5996 cut-off events. For 1500919/1500923 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 36527 event pairs, 771 based on Foata normal form. 6/5999 useless extension candidates. Maximal degree in co-relation 67371. Up to 5588 conditions per place. [2024-06-20 16:20:25,625 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 437 selfloop transitions, 49 changer transitions 0/518 dead transitions. [2024-06-20 16:20:25,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 518 transitions, 7512 flow [2024-06-20 16:20:25,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:20:25,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:20:25,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-20 16:20:25,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226190476190476 [2024-06-20 16:20:25,626 INFO L175 Difference]: Start difference. First operand has 385 places, 504 transitions, 6242 flow. Second operand 8 states and 142 transitions. [2024-06-20 16:20:25,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 518 transitions, 7512 flow [2024-06-20 16:20:28,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 518 transitions, 7334 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-06-20 16:20:28,676 INFO L231 Difference]: Finished difference. Result has 388 places, 504 transitions, 6168 flow [2024-06-20 16:20:28,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6064, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6168, PETRI_PLACES=388, PETRI_TRANSITIONS=504} [2024-06-20 16:20:28,676 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 345 predicate places. [2024-06-20 16:20:28,676 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 504 transitions, 6168 flow [2024-06-20 16:20:28,676 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) [2024-06-20 16:20:28,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:28,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:28,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-20 16:20:28,677 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:28,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:28,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1150726137, now seen corresponding path program 12 times [2024-06-20 16:20:28,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:28,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754787695] [2024-06-20 16:20:28,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:28,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:29,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:29,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:29,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754787695] [2024-06-20 16:20:29,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754787695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:29,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:29,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:20:29,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020593531] [2024-06-20 16:20:29,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:29,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:20:29,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:29,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:20:29,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:20:29,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:20:29,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 504 transitions, 6168 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:29,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:29,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:20:29,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:30,869 INFO L124 PetriNetUnfolderBase]: 3751/5991 cut-off events. [2024-06-20 16:20:30,869 INFO L125 PetriNetUnfolderBase]: For 1509347/1509351 co-relation queries the response was YES. [2024-06-20 16:20:30,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67355 conditions, 5991 events. 3751/5991 cut-off events. For 1509347/1509351 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 36435 event pairs, 774 based on Foata normal form. 6/5994 useless extension candidates. Maximal degree in co-relation 67177. Up to 5626 conditions per place. [2024-06-20 16:20:30,965 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 452 selfloop transitions, 32 changer transitions 0/516 dead transitions. [2024-06-20 16:20:30,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 516 transitions, 7188 flow [2024-06-20 16:20:30,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:20:30,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:20:30,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-20 16:20:30,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-20 16:20:30,967 INFO L175 Difference]: Start difference. First operand has 388 places, 504 transitions, 6168 flow. Second operand 8 states and 137 transitions. [2024-06-20 16:20:30,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 516 transitions, 7188 flow [2024-06-20 16:20:33,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 516 transitions, 7005 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-20 16:20:33,942 INFO L231 Difference]: Finished difference. Result has 390 places, 504 transitions, 6055 flow [2024-06-20 16:20:33,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5985, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6055, PETRI_PLACES=390, PETRI_TRANSITIONS=504} [2024-06-20 16:20:33,942 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 347 predicate places. [2024-06-20 16:20:33,942 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 504 transitions, 6055 flow [2024-06-20 16:20:33,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:33,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:33,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:33,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-20 16:20:33,943 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:33,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:33,943 INFO L85 PathProgramCache]: Analyzing trace with hash -523675587, now seen corresponding path program 10 times [2024-06-20 16:20:33,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:33,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134149535] [2024-06-20 16:20:33,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:33,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:34,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:34,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:34,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134149535] [2024-06-20 16:20:34,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134149535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:34,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:34,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:20:34,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561964129] [2024-06-20 16:20:34,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:34,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:20:34,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:34,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:20:34,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:20:34,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:20:34,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 504 transitions, 6055 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:34,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:34,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:20:34,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:36,208 INFO L124 PetriNetUnfolderBase]: 3849/6101 cut-off events. [2024-06-20 16:20:36,208 INFO L125 PetriNetUnfolderBase]: For 1529164/1529168 co-relation queries the response was YES. [2024-06-20 16:20:36,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68076 conditions, 6101 events. 3849/6101 cut-off events. For 1529164/1529168 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 36808 event pairs, 796 based on Foata normal form. 6/6104 useless extension candidates. Maximal degree in co-relation 67897. Up to 5779 conditions per place. [2024-06-20 16:20:36,315 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 447 selfloop transitions, 71 changer transitions 0/522 dead transitions. [2024-06-20 16:20:36,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 522 transitions, 7696 flow [2024-06-20 16:20:36,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:20:36,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:20:36,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-20 16:20:36,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-20 16:20:36,316 INFO L175 Difference]: Start difference. First operand has 390 places, 504 transitions, 6055 flow. Second operand 8 states and 137 transitions. [2024-06-20 16:20:36,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 522 transitions, 7696 flow [2024-06-20 16:20:39,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 522 transitions, 7568 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-20 16:20:39,440 INFO L231 Difference]: Finished difference. Result has 389 places, 507 transitions, 6140 flow [2024-06-20 16:20:39,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5927, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6140, PETRI_PLACES=389, PETRI_TRANSITIONS=507} [2024-06-20 16:20:39,440 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 346 predicate places. [2024-06-20 16:20:39,440 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 507 transitions, 6140 flow [2024-06-20 16:20:39,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:39,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:39,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:39,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-20 16:20:39,441 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:39,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:39,441 INFO L85 PathProgramCache]: Analyzing trace with hash -700927449, now seen corresponding path program 4 times [2024-06-20 16:20:39,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:39,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798955961] [2024-06-20 16:20:39,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:39,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:40,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:40,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:40,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798955961] [2024-06-20 16:20:40,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798955961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:40,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:40,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:20:40,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335348210] [2024-06-20 16:20:40,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:40,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:20:40,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:40,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:20:40,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:20:40,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:20:40,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 507 transitions, 6140 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:40,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:40,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:20:40,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:42,035 INFO L124 PetriNetUnfolderBase]: 3757/5995 cut-off events. [2024-06-20 16:20:42,035 INFO L125 PetriNetUnfolderBase]: For 1540317/1540317 co-relation queries the response was YES. [2024-06-20 16:20:42,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67610 conditions, 5995 events. 3757/5995 cut-off events. For 1540317/1540317 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 36388 event pairs, 770 based on Foata normal form. 1/5992 useless extension candidates. Maximal degree in co-relation 67430. Up to 5579 conditions per place. [2024-06-20 16:20:42,132 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 427 selfloop transitions, 57 changer transitions 0/517 dead transitions. [2024-06-20 16:20:42,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 517 transitions, 7136 flow [2024-06-20 16:20:42,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:20:42,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:20:42,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-20 16:20:42,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-20 16:20:42,133 INFO L175 Difference]: Start difference. First operand has 389 places, 507 transitions, 6140 flow. Second operand 8 states and 137 transitions. [2024-06-20 16:20:42,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 517 transitions, 7136 flow [2024-06-20 16:20:45,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 517 transitions, 6843 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-20 16:20:45,205 INFO L231 Difference]: Finished difference. Result has 390 places, 507 transitions, 5967 flow [2024-06-20 16:20:45,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5847, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5967, PETRI_PLACES=390, PETRI_TRANSITIONS=507} [2024-06-20 16:20:45,206 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 347 predicate places. [2024-06-20 16:20:45,206 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 507 transitions, 5967 flow [2024-06-20 16:20:45,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:45,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:45,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:45,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-20 16:20:45,206 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:45,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:45,207 INFO L85 PathProgramCache]: Analyzing trace with hash -301072647, now seen corresponding path program 11 times [2024-06-20 16:20:45,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:45,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254010329] [2024-06-20 16:20:45,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:45,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:45,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:45,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:45,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254010329] [2024-06-20 16:20:45,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254010329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:45,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:45,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:20:45,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074764730] [2024-06-20 16:20:45,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:45,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:20:45,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:45,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:20:45,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:20:46,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:20:46,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 507 transitions, 5967 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:46,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:46,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:20:46,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:47,622 INFO L124 PetriNetUnfolderBase]: 3840/6083 cut-off events. [2024-06-20 16:20:47,622 INFO L125 PetriNetUnfolderBase]: For 1552469/1552473 co-relation queries the response was YES. [2024-06-20 16:20:47,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67893 conditions, 6083 events. 3840/6083 cut-off events. For 1552469/1552473 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 36567 event pairs, 801 based on Foata normal form. 6/6086 useless extension candidates. Maximal degree in co-relation 67712. Up to 5850 conditions per place. [2024-06-20 16:20:47,709 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 474 selfloop transitions, 40 changer transitions 0/518 dead transitions. [2024-06-20 16:20:47,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 518 transitions, 7035 flow [2024-06-20 16:20:47,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:20:47,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:20:47,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-20 16:20:47,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-06-20 16:20:47,711 INFO L175 Difference]: Start difference. First operand has 390 places, 507 transitions, 5967 flow. Second operand 8 states and 130 transitions. [2024-06-20 16:20:47,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 518 transitions, 7035 flow [2024-06-20 16:20:51,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 518 transitions, 6770 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-20 16:20:51,183 INFO L231 Difference]: Finished difference. Result has 390 places, 507 transitions, 5788 flow [2024-06-20 16:20:51,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5702, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5788, PETRI_PLACES=390, PETRI_TRANSITIONS=507} [2024-06-20 16:20:51,184 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 347 predicate places. [2024-06-20 16:20:51,184 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 507 transitions, 5788 flow [2024-06-20 16:20:51,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:51,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:51,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:51,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-20 16:20:51,185 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:51,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:51,185 INFO L85 PathProgramCache]: Analyzing trace with hash -523259877, now seen corresponding path program 12 times [2024-06-20 16:20:51,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:51,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530260984] [2024-06-20 16:20:51,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:51,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:51,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:51,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:51,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530260984] [2024-06-20 16:20:51,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530260984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:51,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:51,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:20:51,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975987363] [2024-06-20 16:20:51,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:51,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:20:51,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:51,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:20:51,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:20:52,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:20:52,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 507 transitions, 5788 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:52,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:52,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:20:52,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:20:53,614 INFO L124 PetriNetUnfolderBase]: 3834/6077 cut-off events. [2024-06-20 16:20:53,614 INFO L125 PetriNetUnfolderBase]: For 1551506/1551510 co-relation queries the response was YES. [2024-06-20 16:20:53,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67080 conditions, 6077 events. 3834/6077 cut-off events. For 1551506/1551510 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 36581 event pairs, 784 based on Foata normal form. 6/6080 useless extension candidates. Maximal degree in co-relation 66899. Up to 5765 conditions per place. [2024-06-20 16:20:53,699 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 444 selfloop transitions, 72 changer transitions 0/520 dead transitions. [2024-06-20 16:20:53,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 520 transitions, 6884 flow [2024-06-20 16:20:53,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:20:53,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:20:53,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-20 16:20:53,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-06-20 16:20:53,701 INFO L175 Difference]: Start difference. First operand has 390 places, 507 transitions, 5788 flow. Second operand 8 states and 135 transitions. [2024-06-20 16:20:53,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 520 transitions, 6884 flow [2024-06-20 16:20:57,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 520 transitions, 6717 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-20 16:20:57,227 INFO L231 Difference]: Finished difference. Result has 389 places, 507 transitions, 5771 flow [2024-06-20 16:20:57,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5621, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5771, PETRI_PLACES=389, PETRI_TRANSITIONS=507} [2024-06-20 16:20:57,227 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 346 predicate places. [2024-06-20 16:20:57,227 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 507 transitions, 5771 flow [2024-06-20 16:20:57,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:57,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:20:57,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:20:57,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-20 16:20:57,228 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:20:57,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:20:57,228 INFO L85 PathProgramCache]: Analyzing trace with hash -700930425, now seen corresponding path program 4 times [2024-06-20 16:20:57,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:20:57,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92741340] [2024-06-20 16:20:57,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:20:57,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:20:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:20:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:20:58,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:20:58,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92741340] [2024-06-20 16:20:58,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92741340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:20:58,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:20:58,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:20:58,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785714632] [2024-06-20 16:20:58,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:20:58,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:20:58,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:20:58,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:20:58,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:20:58,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:20:58,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 507 transitions, 5771 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:20:58,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:20:58,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:20:58,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:00,107 INFO L124 PetriNetUnfolderBase]: 3740/5970 cut-off events. [2024-06-20 16:21:00,107 INFO L125 PetriNetUnfolderBase]: For 1561957/1561957 co-relation queries the response was YES. [2024-06-20 16:21:00,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66439 conditions, 5970 events. 3740/5970 cut-off events. For 1561957/1561957 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 36231 event pairs, 761 based on Foata normal form. 2/5968 useless extension candidates. Maximal degree in co-relation 66257. Up to 5557 conditions per place. [2024-06-20 16:21:00,195 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 429 selfloop transitions, 56 changer transitions 0/518 dead transitions. [2024-06-20 16:21:00,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 518 transitions, 6771 flow [2024-06-20 16:21:00,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:21:00,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:21:00,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-20 16:21:00,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-20 16:21:00,196 INFO L175 Difference]: Start difference. First operand has 389 places, 507 transitions, 5771 flow. Second operand 8 states and 137 transitions. [2024-06-20 16:21:00,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 518 transitions, 6771 flow [2024-06-20 16:21:02,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 518 transitions, 6585 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-20 16:21:02,911 INFO L231 Difference]: Finished difference. Result has 390 places, 507 transitions, 5702 flow [2024-06-20 16:21:02,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5585, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5702, PETRI_PLACES=390, PETRI_TRANSITIONS=507} [2024-06-20 16:21:02,911 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 347 predicate places. [2024-06-20 16:21:02,911 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 507 transitions, 5702 flow [2024-06-20 16:21:02,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:02,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:02,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:02,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-20 16:21:02,912 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:02,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:02,912 INFO L85 PathProgramCache]: Analyzing trace with hash -700561029, now seen corresponding path program 2 times [2024-06-20 16:21:02,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:02,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27041501] [2024-06-20 16:21:02,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:02,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:03,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:03,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:03,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27041501] [2024-06-20 16:21:03,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27041501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:03,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:03,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:21:03,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700380861] [2024-06-20 16:21:03,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:03,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:21:03,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:03,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:21:03,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:21:03,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:21:03,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 507 transitions, 5702 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:03,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:03,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:21:03,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:05,656 INFO L124 PetriNetUnfolderBase]: 3849/6093 cut-off events. [2024-06-20 16:21:05,657 INFO L125 PetriNetUnfolderBase]: For 1598954/1598954 co-relation queries the response was YES. [2024-06-20 16:21:05,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67351 conditions, 6093 events. 3849/6093 cut-off events. For 1598954/1598954 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 36621 event pairs, 791 based on Foata normal form. 4/6093 useless extension candidates. Maximal degree in co-relation 67168. Up to 5684 conditions per place. [2024-06-20 16:21:05,762 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 441 selfloop transitions, 84 changer transitions 0/529 dead transitions. [2024-06-20 16:21:05,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 529 transitions, 7170 flow [2024-06-20 16:21:05,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:21:05,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:21:05,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-20 16:21:05,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41534391534391535 [2024-06-20 16:21:05,763 INFO L175 Difference]: Start difference. First operand has 390 places, 507 transitions, 5702 flow. Second operand 9 states and 157 transitions. [2024-06-20 16:21:05,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 529 transitions, 7170 flow [2024-06-20 16:21:09,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 529 transitions, 7031 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-20 16:21:09,367 INFO L231 Difference]: Finished difference. Result has 392 places, 510 transitions, 5817 flow [2024-06-20 16:21:09,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5563, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5817, PETRI_PLACES=392, PETRI_TRANSITIONS=510} [2024-06-20 16:21:09,368 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 349 predicate places. [2024-06-20 16:21:09,368 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 510 transitions, 5817 flow [2024-06-20 16:21:09,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:09,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:09,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:09,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-20 16:21:09,368 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:09,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:09,369 INFO L85 PathProgramCache]: Analyzing trace with hash -286778919, now seen corresponding path program 3 times [2024-06-20 16:21:09,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:09,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307844881] [2024-06-20 16:21:09,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:09,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:10,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:10,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:10,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307844881] [2024-06-20 16:21:10,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307844881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:10,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:10,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:21:10,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123944106] [2024-06-20 16:21:10,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:10,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:21:10,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:10,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:21:10,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:21:10,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:21:10,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 510 transitions, 5817 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:10,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:10,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:21:10,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:12,036 INFO L124 PetriNetUnfolderBase]: 3869/6119 cut-off events. [2024-06-20 16:21:12,037 INFO L125 PetriNetUnfolderBase]: For 1624496/1624496 co-relation queries the response was YES. [2024-06-20 16:21:12,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67884 conditions, 6119 events. 3869/6119 cut-off events. For 1624496/1624496 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 36770 event pairs, 820 based on Foata normal form. 4/6121 useless extension candidates. Maximal degree in co-relation 67700. Up to 5916 conditions per place. [2024-06-20 16:21:12,133 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 499 selfloop transitions, 23 changer transitions 0/526 dead transitions. [2024-06-20 16:21:12,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 526 transitions, 6993 flow [2024-06-20 16:21:12,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:21:12,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:21:12,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-20 16:21:12,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37566137566137564 [2024-06-20 16:21:12,135 INFO L175 Difference]: Start difference. First operand has 392 places, 510 transitions, 5817 flow. Second operand 9 states and 142 transitions. [2024-06-20 16:21:12,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 526 transitions, 6993 flow [2024-06-20 16:21:15,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 526 transitions, 6718 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-20 16:21:15,216 INFO L231 Difference]: Finished difference. Result has 394 places, 513 transitions, 5687 flow [2024-06-20 16:21:15,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5550, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5687, PETRI_PLACES=394, PETRI_TRANSITIONS=513} [2024-06-20 16:21:15,217 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 351 predicate places. [2024-06-20 16:21:15,217 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 513 transitions, 5687 flow [2024-06-20 16:21:15,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:15,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:15,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:15,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-20 16:21:15,217 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:15,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:15,218 INFO L85 PathProgramCache]: Analyzing trace with hash -301063719, now seen corresponding path program 4 times [2024-06-20 16:21:15,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:15,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610124281] [2024-06-20 16:21:15,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:15,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:16,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:16,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:16,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610124281] [2024-06-20 16:21:16,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610124281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:16,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:16,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:21:16,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678511115] [2024-06-20 16:21:16,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:16,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:21:16,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:16,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:21:16,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:21:16,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:21:16,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 513 transitions, 5687 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:16,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:16,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:21:16,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:17,969 INFO L124 PetriNetUnfolderBase]: 3889/6150 cut-off events. [2024-06-20 16:21:17,969 INFO L125 PetriNetUnfolderBase]: For 1646709/1646709 co-relation queries the response was YES. [2024-06-20 16:21:18,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68003 conditions, 6150 events. 3889/6150 cut-off events. For 1646709/1646709 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 36959 event pairs, 793 based on Foata normal form. 4/6149 useless extension candidates. Maximal degree in co-relation 67818. Up to 5716 conditions per place. [2024-06-20 16:21:18,070 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 435 selfloop transitions, 96 changer transitions 0/535 dead transitions. [2024-06-20 16:21:18,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 535 transitions, 7175 flow [2024-06-20 16:21:18,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:21:18,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:21:18,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-20 16:21:18,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-06-20 16:21:18,072 INFO L175 Difference]: Start difference. First operand has 394 places, 513 transitions, 5687 flow. Second operand 9 states and 156 transitions. [2024-06-20 16:21:18,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 535 transitions, 7175 flow [2024-06-20 16:21:21,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 535 transitions, 6966 flow, removed 35 selfloop flow, removed 11 redundant places. [2024-06-20 16:21:21,112 INFO L231 Difference]: Finished difference. Result has 392 places, 516 transitions, 5760 flow [2024-06-20 16:21:21,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5478, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5760, PETRI_PLACES=392, PETRI_TRANSITIONS=516} [2024-06-20 16:21:21,113 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 349 predicate places. [2024-06-20 16:21:21,113 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 516 transitions, 5760 flow [2024-06-20 16:21:21,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:21,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:21,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:21,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-20 16:21:21,114 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:21,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:21,114 INFO L85 PathProgramCache]: Analyzing trace with hash -737172993, now seen corresponding path program 5 times [2024-06-20 16:21:21,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:21,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69179074] [2024-06-20 16:21:21,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:21,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:21,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:21,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:21,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69179074] [2024-06-20 16:21:21,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69179074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:21,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:21,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:21:21,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059171836] [2024-06-20 16:21:21,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:21,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:21:21,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:21,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:21:21,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:21:22,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:21:22,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 516 transitions, 5760 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:22,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:22,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:21:22,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:23,645 INFO L124 PetriNetUnfolderBase]: 3877/6132 cut-off events. [2024-06-20 16:21:23,645 INFO L125 PetriNetUnfolderBase]: For 1637624/1637624 co-relation queries the response was YES. [2024-06-20 16:21:23,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67530 conditions, 6132 events. 3877/6132 cut-off events. For 1637624/1637624 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 36819 event pairs, 791 based on Foata normal form. 4/6131 useless extension candidates. Maximal degree in co-relation 67346. Up to 5708 conditions per place. [2024-06-20 16:21:23,751 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 429 selfloop transitions, 100 changer transitions 0/533 dead transitions. [2024-06-20 16:21:23,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 533 transitions, 6896 flow [2024-06-20 16:21:23,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:21:23,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:21:23,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-20 16:21:23,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-20 16:21:23,753 INFO L175 Difference]: Start difference. First operand has 392 places, 516 transitions, 5760 flow. Second operand 9 states and 154 transitions. [2024-06-20 16:21:23,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 533 transitions, 6896 flow [2024-06-20 16:21:27,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 533 transitions, 6571 flow, removed 64 selfloop flow, removed 7 redundant places. [2024-06-20 16:21:27,940 INFO L231 Difference]: Finished difference. Result has 394 places, 516 transitions, 5641 flow [2024-06-20 16:21:27,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5435, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5641, PETRI_PLACES=394, PETRI_TRANSITIONS=516} [2024-06-20 16:21:27,940 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 351 predicate places. [2024-06-20 16:21:27,940 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 516 transitions, 5641 flow [2024-06-20 16:21:27,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:27,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:27,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:27,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-20 16:21:27,944 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:27,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:27,945 INFO L85 PathProgramCache]: Analyzing trace with hash -2025965769, now seen corresponding path program 5 times [2024-06-20 16:21:27,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:27,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554403274] [2024-06-20 16:21:27,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:27,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:29,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:29,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:29,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554403274] [2024-06-20 16:21:29,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554403274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:29,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:29,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:21:29,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400626447] [2024-06-20 16:21:29,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:29,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:21:29,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:29,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:21:29,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:21:29,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:21:29,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 516 transitions, 5641 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:29,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:29,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:21:29,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:30,840 INFO L124 PetriNetUnfolderBase]: 3819/6093 cut-off events. [2024-06-20 16:21:30,840 INFO L125 PetriNetUnfolderBase]: For 1636574/1636576 co-relation queries the response was YES. [2024-06-20 16:21:30,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67203 conditions, 6093 events. 3819/6093 cut-off events. For 1636574/1636576 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 37176 event pairs, 762 based on Foata normal form. 3/6094 useless extension candidates. Maximal degree in co-relation 67018. Up to 5639 conditions per place. [2024-06-20 16:21:30,938 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 449 selfloop transitions, 81 changer transitions 0/563 dead transitions. [2024-06-20 16:21:30,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 563 transitions, 7063 flow [2024-06-20 16:21:30,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:21:30,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:21:30,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-20 16:21:30,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-20 16:21:30,942 INFO L175 Difference]: Start difference. First operand has 394 places, 516 transitions, 5641 flow. Second operand 9 states and 171 transitions. [2024-06-20 16:21:30,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 563 transitions, 7063 flow [2024-06-20 16:21:34,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 563 transitions, 6774 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-20 16:21:34,595 INFO L231 Difference]: Finished difference. Result has 395 places, 536 transitions, 5846 flow [2024-06-20 16:21:34,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5368, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5846, PETRI_PLACES=395, PETRI_TRANSITIONS=536} [2024-06-20 16:21:34,595 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 352 predicate places. [2024-06-20 16:21:34,596 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 536 transitions, 5846 flow [2024-06-20 16:21:34,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:34,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:34,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:34,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-20 16:21:34,598 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:34,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:34,598 INFO L85 PathProgramCache]: Analyzing trace with hash 2089588037, now seen corresponding path program 6 times [2024-06-20 16:21:34,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:34,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681985170] [2024-06-20 16:21:34,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:34,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:35,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:35,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:35,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681985170] [2024-06-20 16:21:35,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681985170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:35,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:35,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:21:35,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796428266] [2024-06-20 16:21:35,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:35,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:21:35,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:35,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:21:35,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:21:35,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:21:35,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 536 transitions, 5846 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:35,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:35,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:21:35,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:37,189 INFO L124 PetriNetUnfolderBase]: 3860/6148 cut-off events. [2024-06-20 16:21:37,189 INFO L125 PetriNetUnfolderBase]: For 1649574/1649576 co-relation queries the response was YES. [2024-06-20 16:21:37,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67527 conditions, 6148 events. 3860/6148 cut-off events. For 1649574/1649576 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 37416 event pairs, 778 based on Foata normal form. 3/6149 useless extension candidates. Maximal degree in co-relation 67341. Up to 5718 conditions per place. [2024-06-20 16:21:37,299 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 477 selfloop transitions, 83 changer transitions 0/593 dead transitions. [2024-06-20 16:21:37,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 593 transitions, 7586 flow [2024-06-20 16:21:37,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:21:37,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:21:37,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-20 16:21:37,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-20 16:21:37,300 INFO L175 Difference]: Start difference. First operand has 395 places, 536 transitions, 5846 flow. Second operand 9 states and 169 transitions. [2024-06-20 16:21:37,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 593 transitions, 7586 flow [2024-06-20 16:21:41,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 593 transitions, 7211 flow, removed 111 selfloop flow, removed 5 redundant places. [2024-06-20 16:21:41,428 INFO L231 Difference]: Finished difference. Result has 401 places, 568 transitions, 6306 flow [2024-06-20 16:21:41,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5602, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6306, PETRI_PLACES=401, PETRI_TRANSITIONS=568} [2024-06-20 16:21:41,428 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 358 predicate places. [2024-06-20 16:21:41,428 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 568 transitions, 6306 flow [2024-06-20 16:21:41,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:41,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:41,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:41,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-20 16:21:41,429 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:41,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:41,430 INFO L85 PathProgramCache]: Analyzing trace with hash 933723295, now seen corresponding path program 1 times [2024-06-20 16:21:41,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:41,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233753893] [2024-06-20 16:21:41,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:41,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:42,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:42,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:42,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233753893] [2024-06-20 16:21:42,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233753893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:42,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:42,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:21:42,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769772703] [2024-06-20 16:21:42,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:42,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:21:42,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:42,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:21:42,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:21:42,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:21:42,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 568 transitions, 6306 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:42,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:42,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:21:42,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:44,295 INFO L124 PetriNetUnfolderBase]: 3708/5980 cut-off events. [2024-06-20 16:21:44,295 INFO L125 PetriNetUnfolderBase]: For 1474240/1474240 co-relation queries the response was YES. [2024-06-20 16:21:44,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63453 conditions, 5980 events. 3708/5980 cut-off events. For 1474240/1474240 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 37105 event pairs, 708 based on Foata normal form. 2/5965 useless extension candidates. Maximal degree in co-relation 63265. Up to 5522 conditions per place. [2024-06-20 16:21:44,397 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 531 selfloop transitions, 29 changer transitions 0/599 dead transitions. [2024-06-20 16:21:44,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 599 transitions, 7914 flow [2024-06-20 16:21:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:21:44,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:21:44,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-20 16:21:44,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-20 16:21:44,399 INFO L175 Difference]: Start difference. First operand has 401 places, 568 transitions, 6306 flow. Second operand 10 states and 185 transitions. [2024-06-20 16:21:44,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 599 transitions, 7914 flow [2024-06-20 16:21:48,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 599 transitions, 7717 flow, removed 55 selfloop flow, removed 4 redundant places. [2024-06-20 16:21:48,824 INFO L231 Difference]: Finished difference. Result has 407 places, 572 transitions, 6320 flow [2024-06-20 16:21:48,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6109, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6320, PETRI_PLACES=407, PETRI_TRANSITIONS=572} [2024-06-20 16:21:48,824 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 364 predicate places. [2024-06-20 16:21:48,824 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 572 transitions, 6320 flow [2024-06-20 16:21:48,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:48,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:48,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:48,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-20 16:21:48,825 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:48,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:48,825 INFO L85 PathProgramCache]: Analyzing trace with hash 933783745, now seen corresponding path program 2 times [2024-06-20 16:21:48,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:48,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801966956] [2024-06-20 16:21:48,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:48,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:50,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:50,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:50,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801966956] [2024-06-20 16:21:50,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801966956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:50,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:50,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:21:50,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324232190] [2024-06-20 16:21:50,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:50,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:21:50,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:50,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:21:50,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:21:50,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:21:50,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 572 transitions, 6320 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:50,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:50,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:21:50,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:51,906 INFO L124 PetriNetUnfolderBase]: 3716/5997 cut-off events. [2024-06-20 16:21:51,907 INFO L125 PetriNetUnfolderBase]: For 1496457/1496457 co-relation queries the response was YES. [2024-06-20 16:21:51,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63722 conditions, 5997 events. 3716/5997 cut-off events. For 1496457/1496457 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 37263 event pairs, 743 based on Foata normal form. 2/5982 useless extension candidates. Maximal degree in co-relation 63534. Up to 5565 conditions per place. [2024-06-20 16:21:51,998 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 531 selfloop transitions, 26 changer transitions 0/596 dead transitions. [2024-06-20 16:21:51,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 596 transitions, 7580 flow [2024-06-20 16:21:51,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:21:51,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:21:51,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-20 16:21:51,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-20 16:21:51,999 INFO L175 Difference]: Start difference. First operand has 407 places, 572 transitions, 6320 flow. Second operand 10 states and 180 transitions. [2024-06-20 16:21:51,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 596 transitions, 7580 flow [2024-06-20 16:21:56,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 596 transitions, 7427 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-20 16:21:56,183 INFO L231 Difference]: Finished difference. Result has 411 places, 574 transitions, 6304 flow [2024-06-20 16:21:56,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6195, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6304, PETRI_PLACES=411, PETRI_TRANSITIONS=574} [2024-06-20 16:21:56,184 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 368 predicate places. [2024-06-20 16:21:56,184 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 574 transitions, 6304 flow [2024-06-20 16:21:56,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:56,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:21:56,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:21:56,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-20 16:21:56,185 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:21:56,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:21:56,185 INFO L85 PathProgramCache]: Analyzing trace with hash 933783869, now seen corresponding path program 1 times [2024-06-20 16:21:56,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:21:56,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316773605] [2024-06-20 16:21:56,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:21:56,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:21:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:21:57,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:21:57,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:21:57,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316773605] [2024-06-20 16:21:57,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316773605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:21:57,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:21:57,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:21:57,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220183941] [2024-06-20 16:21:57,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:21:57,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:21:57,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:21:57,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:21:57,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:21:57,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:21:57,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 574 transitions, 6304 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:21:57,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:21:57,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:21:57,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:21:58,910 INFO L124 PetriNetUnfolderBase]: 3818/6104 cut-off events. [2024-06-20 16:21:58,910 INFO L125 PetriNetUnfolderBase]: For 1515357/1515357 co-relation queries the response was YES. [2024-06-20 16:21:58,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64588 conditions, 6104 events. 3818/6104 cut-off events. For 1515357/1515357 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 37491 event pairs, 768 based on Foata normal form. 1/6088 useless extension candidates. Maximal degree in co-relation 64398. Up to 5806 conditions per place. [2024-06-20 16:21:59,000 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 561 selfloop transitions, 31 changer transitions 0/602 dead transitions. [2024-06-20 16:21:59,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 602 transitions, 7988 flow [2024-06-20 16:21:59,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:21:59,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:21:59,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-20 16:21:59,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-06-20 16:21:59,002 INFO L175 Difference]: Start difference. First operand has 411 places, 574 transitions, 6304 flow. Second operand 10 states and 174 transitions. [2024-06-20 16:21:59,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 602 transitions, 7988 flow [2024-06-20 16:22:03,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 602 transitions, 7899 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-20 16:22:03,616 INFO L231 Difference]: Finished difference. Result has 413 places, 580 transitions, 6457 flow [2024-06-20 16:22:03,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6215, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6457, PETRI_PLACES=413, PETRI_TRANSITIONS=580} [2024-06-20 16:22:03,617 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 370 predicate places. [2024-06-20 16:22:03,617 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 580 transitions, 6457 flow [2024-06-20 16:22:03,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:03,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:03,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:03,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-20 16:22:03,618 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:03,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:03,618 INFO L85 PathProgramCache]: Analyzing trace with hash 936580379, now seen corresponding path program 2 times [2024-06-20 16:22:03,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:03,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110497815] [2024-06-20 16:22:03,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:03,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:04,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:04,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110497815] [2024-06-20 16:22:04,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110497815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:04,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:04,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:22:04,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93041357] [2024-06-20 16:22:04,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:04,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:22:04,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:04,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:22:04,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:22:04,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:22:04,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 580 transitions, 6457 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:04,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:04,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:22:04,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:06,520 INFO L124 PetriNetUnfolderBase]: 3823/6111 cut-off events. [2024-06-20 16:22:06,520 INFO L125 PetriNetUnfolderBase]: For 1541254/1541254 co-relation queries the response was YES. [2024-06-20 16:22:06,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65202 conditions, 6111 events. 3823/6111 cut-off events. For 1541254/1541254 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 37572 event pairs, 768 based on Foata normal form. 1/6095 useless extension candidates. Maximal degree in co-relation 65011. Up to 5827 conditions per place. [2024-06-20 16:22:06,610 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 565 selfloop transitions, 26 changer transitions 0/601 dead transitions. [2024-06-20 16:22:06,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 601 transitions, 8049 flow [2024-06-20 16:22:06,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:22:06,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:22:06,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-20 16:22:06,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-06-20 16:22:06,611 INFO L175 Difference]: Start difference. First operand has 413 places, 580 transitions, 6457 flow. Second operand 9 states and 156 transitions. [2024-06-20 16:22:06,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 601 transitions, 8049 flow [2024-06-20 16:22:11,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 601 transitions, 7906 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-06-20 16:22:11,903 INFO L231 Difference]: Finished difference. Result has 416 places, 583 transitions, 6462 flow [2024-06-20 16:22:11,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6334, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6462, PETRI_PLACES=416, PETRI_TRANSITIONS=583} [2024-06-20 16:22:11,904 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 373 predicate places. [2024-06-20 16:22:11,904 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 583 transitions, 6462 flow [2024-06-20 16:22:11,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:11,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:11,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:11,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-20 16:22:11,905 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:11,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:11,905 INFO L85 PathProgramCache]: Analyzing trace with hash 936585215, now seen corresponding path program 1 times [2024-06-20 16:22:11,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:11,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828370555] [2024-06-20 16:22:11,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:11,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:12,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:12,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:12,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828370555] [2024-06-20 16:22:12,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828370555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:12,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:12,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:22:12,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611345630] [2024-06-20 16:22:12,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:12,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:22:12,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:12,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:22:12,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:22:12,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:22:12,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 583 transitions, 6462 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:12,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:12,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:22:12,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:14,527 INFO L124 PetriNetUnfolderBase]: 3833/6127 cut-off events. [2024-06-20 16:22:14,527 INFO L125 PetriNetUnfolderBase]: For 1571240/1571240 co-relation queries the response was YES. [2024-06-20 16:22:14,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65473 conditions, 6127 events. 3833/6127 cut-off events. For 1571240/1571240 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 37638 event pairs, 767 based on Foata normal form. 2/6112 useless extension candidates. Maximal degree in co-relation 65280. Up to 5845 conditions per place. [2024-06-20 16:22:14,630 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 573 selfloop transitions, 21 changer transitions 0/604 dead transitions. [2024-06-20 16:22:14,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 604 transitions, 7788 flow [2024-06-20 16:22:14,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:22:14,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:22:14,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-20 16:22:14,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-20 16:22:14,631 INFO L175 Difference]: Start difference. First operand has 416 places, 583 transitions, 6462 flow. Second operand 9 states and 154 transitions. [2024-06-20 16:22:14,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 604 transitions, 7788 flow [2024-06-20 16:22:19,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 604 transitions, 7672 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-20 16:22:19,909 INFO L231 Difference]: Finished difference. Result has 418 places, 586 transitions, 6480 flow [2024-06-20 16:22:19,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6346, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6480, PETRI_PLACES=418, PETRI_TRANSITIONS=586} [2024-06-20 16:22:19,910 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 375 predicate places. [2024-06-20 16:22:19,910 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 586 transitions, 6480 flow [2024-06-20 16:22:19,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:19,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:19,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:19,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-20 16:22:19,911 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:19,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:19,911 INFO L85 PathProgramCache]: Analyzing trace with hash 675287541, now seen corresponding path program 3 times [2024-06-20 16:22:19,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:19,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575058378] [2024-06-20 16:22:19,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:19,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:21,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:21,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:21,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575058378] [2024-06-20 16:22:21,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575058378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:21,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:21,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:22:21,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859182002] [2024-06-20 16:22:21,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:21,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:22:21,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:21,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:22:21,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:22:21,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:22:21,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 586 transitions, 6480 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:21,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:21,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:22:21,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:23,124 INFO L124 PetriNetUnfolderBase]: 3748/6040 cut-off events. [2024-06-20 16:22:23,125 INFO L125 PetriNetUnfolderBase]: For 1576772/1576772 co-relation queries the response was YES. [2024-06-20 16:22:23,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65098 conditions, 6040 events. 3748/6040 cut-off events. For 1576772/1576772 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 37521 event pairs, 744 based on Foata normal form. 2/6025 useless extension candidates. Maximal degree in co-relation 64904. Up to 5611 conditions per place. [2024-06-20 16:22:23,295 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 542 selfloop transitions, 20 changer transitions 0/604 dead transitions. [2024-06-20 16:22:23,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 604 transitions, 7660 flow [2024-06-20 16:22:23,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:22:23,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:22:23,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-20 16:22:23,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-20 16:22:23,296 INFO L175 Difference]: Start difference. First operand has 418 places, 586 transitions, 6480 flow. Second operand 9 states and 161 transitions. [2024-06-20 16:22:23,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 604 transitions, 7660 flow [2024-06-20 16:22:28,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 604 transitions, 7510 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-20 16:22:28,692 INFO L231 Difference]: Finished difference. Result has 420 places, 586 transitions, 6375 flow [2024-06-20 16:22:28,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6330, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6375, PETRI_PLACES=420, PETRI_TRANSITIONS=586} [2024-06-20 16:22:28,692 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 377 predicate places. [2024-06-20 16:22:28,692 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 586 transitions, 6375 flow [2024-06-20 16:22:28,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:28,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:28,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:28,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-20 16:22:28,693 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:28,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:28,693 INFO L85 PathProgramCache]: Analyzing trace with hash 936585029, now seen corresponding path program 3 times [2024-06-20 16:22:28,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:28,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268323904] [2024-06-20 16:22:28,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:28,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:29,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:29,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:29,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268323904] [2024-06-20 16:22:29,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268323904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:29,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:29,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:22:29,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045219624] [2024-06-20 16:22:29,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:29,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:22:29,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:29,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:22:29,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:22:29,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:22:29,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 586 transitions, 6375 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:29,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:29,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:22:29,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:31,725 INFO L124 PetriNetUnfolderBase]: 3825/6116 cut-off events. [2024-06-20 16:22:31,726 INFO L125 PetriNetUnfolderBase]: For 1573827/1573827 co-relation queries the response was YES. [2024-06-20 16:22:31,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65254 conditions, 6116 events. 3825/6116 cut-off events. For 1573827/1573827 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 37563 event pairs, 766 based on Foata normal form. 1/6100 useless extension candidates. Maximal degree in co-relation 65059. Up to 5837 conditions per place. [2024-06-20 16:22:31,829 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 572 selfloop transitions, 21 changer transitions 0/603 dead transitions. [2024-06-20 16:22:31,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 603 transitions, 7615 flow [2024-06-20 16:22:31,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:22:31,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:22:31,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-20 16:22:31,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-20 16:22:31,830 INFO L175 Difference]: Start difference. First operand has 420 places, 586 transitions, 6375 flow. Second operand 9 states and 153 transitions. [2024-06-20 16:22:31,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 603 transitions, 7615 flow [2024-06-20 16:22:36,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 603 transitions, 7515 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-20 16:22:36,916 INFO L231 Difference]: Finished difference. Result has 421 places, 586 transitions, 6323 flow [2024-06-20 16:22:36,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6275, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6323, PETRI_PLACES=421, PETRI_TRANSITIONS=586} [2024-06-20 16:22:36,917 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 378 predicate places. [2024-06-20 16:22:36,917 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 586 transitions, 6323 flow [2024-06-20 16:22:36,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:36,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:36,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:36,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-20 16:22:36,918 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:36,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:36,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1051876385, now seen corresponding path program 2 times [2024-06-20 16:22:36,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:36,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108721914] [2024-06-20 16:22:36,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:36,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:37,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:37,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:37,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108721914] [2024-06-20 16:22:37,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108721914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:37,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:37,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:22:37,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326302411] [2024-06-20 16:22:37,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:37,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:22:37,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:37,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:22:37,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:22:37,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:22:37,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 586 transitions, 6323 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:37,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:37,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:22:37,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:39,928 INFO L124 PetriNetUnfolderBase]: 3859/6167 cut-off events. [2024-06-20 16:22:39,928 INFO L125 PetriNetUnfolderBase]: For 1634382/1634382 co-relation queries the response was YES. [2024-06-20 16:22:40,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66363 conditions, 6167 events. 3859/6167 cut-off events. For 1634382/1634382 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 37906 event pairs, 771 based on Foata normal form. 2/6152 useless extension candidates. Maximal degree in co-relation 66167. Up to 5763 conditions per place. [2024-06-20 16:22:40,046 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 538 selfloop transitions, 67 changer transitions 0/615 dead transitions. [2024-06-20 16:22:40,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 615 transitions, 8397 flow [2024-06-20 16:22:40,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:22:40,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:22:40,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-20 16:22:40,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-20 16:22:40,048 INFO L175 Difference]: Start difference. First operand has 421 places, 586 transitions, 6323 flow. Second operand 9 states and 168 transitions. [2024-06-20 16:22:40,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 615 transitions, 8397 flow [2024-06-20 16:22:45,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 615 transitions, 8345 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-20 16:22:45,168 INFO L231 Difference]: Finished difference. Result has 422 places, 595 transitions, 6675 flow [2024-06-20 16:22:45,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6271, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6675, PETRI_PLACES=422, PETRI_TRANSITIONS=595} [2024-06-20 16:22:45,169 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 379 predicate places. [2024-06-20 16:22:45,169 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 595 transitions, 6675 flow [2024-06-20 16:22:45,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:45,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:45,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:45,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-20 16:22:45,170 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:45,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:45,170 INFO L85 PathProgramCache]: Analyzing trace with hash 790583485, now seen corresponding path program 4 times [2024-06-20 16:22:45,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:45,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721872615] [2024-06-20 16:22:45,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:45,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:46,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:46,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:46,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721872615] [2024-06-20 16:22:46,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721872615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:46,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:46,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:22:46,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582894366] [2024-06-20 16:22:46,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:46,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:22:46,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:46,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:22:46,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:22:46,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:22:46,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 595 transitions, 6675 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:46,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:46,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:22:46,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:48,178 INFO L124 PetriNetUnfolderBase]: 3864/6176 cut-off events. [2024-06-20 16:22:48,179 INFO L125 PetriNetUnfolderBase]: For 1650028/1650028 co-relation queries the response was YES. [2024-06-20 16:22:48,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66992 conditions, 6176 events. 3864/6176 cut-off events. For 1650028/1650028 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 37937 event pairs, 768 based on Foata normal form. 1/6160 useless extension candidates. Maximal degree in co-relation 66795. Up to 5849 conditions per place. [2024-06-20 16:22:48,289 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 549 selfloop transitions, 53 changer transitions 0/612 dead transitions. [2024-06-20 16:22:48,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 612 transitions, 8015 flow [2024-06-20 16:22:48,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:22:48,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:22:48,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-20 16:22:48,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41798941798941797 [2024-06-20 16:22:48,290 INFO L175 Difference]: Start difference. First operand has 422 places, 595 transitions, 6675 flow. Second operand 9 states and 158 transitions. [2024-06-20 16:22:48,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 612 transitions, 8015 flow [2024-06-20 16:22:54,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 612 transitions, 7878 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-20 16:22:54,139 INFO L231 Difference]: Finished difference. Result has 427 places, 598 transitions, 6750 flow [2024-06-20 16:22:54,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6538, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6750, PETRI_PLACES=427, PETRI_TRANSITIONS=598} [2024-06-20 16:22:54,140 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 384 predicate places. [2024-06-20 16:22:54,140 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 598 transitions, 6750 flow [2024-06-20 16:22:54,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:54,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:54,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:54,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-20 16:22:54,140 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:22:54,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:54,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1051871549, now seen corresponding path program 5 times [2024-06-20 16:22:54,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:54,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536010293] [2024-06-20 16:22:54,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:54,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:55,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:55,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:55,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536010293] [2024-06-20 16:22:55,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536010293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:55,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:55,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:22:55,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914923399] [2024-06-20 16:22:55,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:55,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:22:55,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:55,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:22:55,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:22:55,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:22:55,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 598 transitions, 6750 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:55,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:55,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:22:55,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:57,098 INFO L124 PetriNetUnfolderBase]: 3877/6190 cut-off events. [2024-06-20 16:22:57,098 INFO L125 PetriNetUnfolderBase]: For 1682583/1682583 co-relation queries the response was YES. [2024-06-20 16:22:57,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67881 conditions, 6190 events. 3877/6190 cut-off events. For 1682583/1682583 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 38005 event pairs, 772 based on Foata normal form. 1/6172 useless extension candidates. Maximal degree in co-relation 67682. Up to 5857 conditions per place. [2024-06-20 16:22:57,193 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 548 selfloop transitions, 61 changer transitions 0/619 dead transitions. [2024-06-20 16:22:57,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 619 transitions, 8488 flow [2024-06-20 16:22:57,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:22:57,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:22:57,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-20 16:22:57,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2024-06-20 16:22:57,195 INFO L175 Difference]: Start difference. First operand has 427 places, 598 transitions, 6750 flow. Second operand 9 states and 160 transitions. [2024-06-20 16:22:57,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 619 transitions, 8488 flow [2024-06-20 16:23:02,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 619 transitions, 8298 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:02,665 INFO L231 Difference]: Finished difference. Result has 429 places, 604 transitions, 6894 flow [2024-06-20 16:23:02,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6560, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6894, PETRI_PLACES=429, PETRI_TRANSITIONS=604} [2024-06-20 16:23:02,666 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 386 predicate places. [2024-06-20 16:23:02,666 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 604 transitions, 6894 flow [2024-06-20 16:23:02,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:02,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:02,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:02,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-20 16:23:02,666 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:23:02,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:02,667 INFO L85 PathProgramCache]: Analyzing trace with hash 790763161, now seen corresponding path program 3 times [2024-06-20 16:23:02,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:02,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199481818] [2024-06-20 16:23:02,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:02,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:03,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:03,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:03,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199481818] [2024-06-20 16:23:03,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199481818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:03,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:03,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:03,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455723558] [2024-06-20 16:23:03,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:03,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:03,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:03,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:03,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:03,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:23:03,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 604 transitions, 6894 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:03,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:03,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:23:03,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:05,534 INFO L124 PetriNetUnfolderBase]: 3887/6206 cut-off events. [2024-06-20 16:23:05,535 INFO L125 PetriNetUnfolderBase]: For 1720785/1720785 co-relation queries the response was YES. [2024-06-20 16:23:05,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68561 conditions, 6206 events. 3887/6206 cut-off events. For 1720785/1720785 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 38131 event pairs, 771 based on Foata normal form. 2/6191 useless extension candidates. Maximal degree in co-relation 68361. Up to 5798 conditions per place. [2024-06-20 16:23:05,651 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 543 selfloop transitions, 73 changer transitions 0/626 dead transitions. [2024-06-20 16:23:05,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 626 transitions, 8814 flow [2024-06-20 16:23:05,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:05,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:05,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-20 16:23:05,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-20 16:23:05,652 INFO L175 Difference]: Start difference. First operand has 429 places, 604 transitions, 6894 flow. Second operand 9 states and 165 transitions. [2024-06-20 16:23:05,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 626 transitions, 8814 flow [2024-06-20 16:23:11,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 626 transitions, 8625 flow, removed 66 selfloop flow, removed 5 redundant places. [2024-06-20 16:23:11,446 INFO L231 Difference]: Finished difference. Result has 433 places, 607 transitions, 6931 flow [2024-06-20 16:23:11,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6705, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6931, PETRI_PLACES=433, PETRI_TRANSITIONS=607} [2024-06-20 16:23:11,446 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 390 predicate places. [2024-06-20 16:23:11,446 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 607 transitions, 6931 flow [2024-06-20 16:23:11,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:11,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:11,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:11,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-20 16:23:11,447 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:23:11,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:11,447 INFO L85 PathProgramCache]: Analyzing trace with hash 790578711, now seen corresponding path program 4 times [2024-06-20 16:23:11,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:11,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350818806] [2024-06-20 16:23:11,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:11,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:12,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:12,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:12,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350818806] [2024-06-20 16:23:12,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350818806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:12,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:12,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:12,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190009413] [2024-06-20 16:23:12,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:12,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:12,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:12,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:12,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:12,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:23:12,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 607 transitions, 6931 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:12,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:12,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:23:12,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:14,583 INFO L124 PetriNetUnfolderBase]: 3808/6133 cut-off events. [2024-06-20 16:23:14,584 INFO L125 PetriNetUnfolderBase]: For 1748483/1748483 co-relation queries the response was YES. [2024-06-20 16:23:14,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68542 conditions, 6133 events. 3808/6133 cut-off events. For 1748483/1748483 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 38175 event pairs, 747 based on Foata normal form. 2/6116 useless extension candidates. Maximal degree in co-relation 68340. Up to 5677 conditions per place. [2024-06-20 16:23:14,682 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 547 selfloop transitions, 32 changer transitions 0/624 dead transitions. [2024-06-20 16:23:14,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 624 transitions, 8219 flow [2024-06-20 16:23:14,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:14,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:14,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-20 16:23:14,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-20 16:23:14,683 INFO L175 Difference]: Start difference. First operand has 433 places, 607 transitions, 6931 flow. Second operand 9 states and 162 transitions. [2024-06-20 16:23:14,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 624 transitions, 8219 flow [2024-06-20 16:23:20,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 624 transitions, 8021 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-20 16:23:20,229 INFO L231 Difference]: Finished difference. Result has 436 places, 609 transitions, 6892 flow [2024-06-20 16:23:20,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6733, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6892, PETRI_PLACES=436, PETRI_TRANSITIONS=609} [2024-06-20 16:23:20,229 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 393 predicate places. [2024-06-20 16:23:20,230 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 609 transitions, 6892 flow [2024-06-20 16:23:20,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:20,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:20,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:20,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-20 16:23:20,230 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:23:20,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:20,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1052049365, now seen corresponding path program 4 times [2024-06-20 16:23:20,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:20,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549576150] [2024-06-20 16:23:20,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:20,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:21,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:21,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:21,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549576150] [2024-06-20 16:23:21,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549576150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:21,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:21,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:21,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665264629] [2024-06-20 16:23:21,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:21,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:21,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:21,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:21,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:21,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:23:21,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 609 transitions, 6892 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:21,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:21,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:23:21,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:23,062 INFO L124 PetriNetUnfolderBase]: 3889/6210 cut-off events. [2024-06-20 16:23:23,062 INFO L125 PetriNetUnfolderBase]: For 1744610/1744610 co-relation queries the response was YES. [2024-06-20 16:23:23,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68642 conditions, 6210 events. 3889/6210 cut-off events. For 1744610/1744610 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 38139 event pairs, 770 based on Foata normal form. 2/6195 useless extension candidates. Maximal degree in co-relation 68439. Up to 5805 conditions per place. [2024-06-20 16:23:23,160 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 547 selfloop transitions, 71 changer transitions 0/628 dead transitions. [2024-06-20 16:23:23,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 628 transitions, 8470 flow [2024-06-20 16:23:23,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:23,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:23,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-20 16:23:23,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43915343915343913 [2024-06-20 16:23:23,161 INFO L175 Difference]: Start difference. First operand has 436 places, 609 transitions, 6892 flow. Second operand 9 states and 166 transitions. [2024-06-20 16:23:23,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 628 transitions, 8470 flow [2024-06-20 16:23:29,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 628 transitions, 8275 flow, removed 67 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:29,338 INFO L231 Difference]: Finished difference. Result has 438 places, 609 transitions, 6845 flow [2024-06-20 16:23:29,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6697, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6845, PETRI_PLACES=438, PETRI_TRANSITIONS=609} [2024-06-20 16:23:29,338 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 395 predicate places. [2024-06-20 16:23:29,338 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 609 transitions, 6845 flow [2024-06-20 16:23:29,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:29,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:29,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:29,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-20 16:23:29,339 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:23:29,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:29,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1438408317, now seen corresponding path program 6 times [2024-06-20 16:23:29,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:29,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650466904] [2024-06-20 16:23:29,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:29,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:30,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:30,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:30,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650466904] [2024-06-20 16:23:30,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650466904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:30,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:30,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:30,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859722022] [2024-06-20 16:23:30,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:30,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:30,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:30,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:30,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:30,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:23:30,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 609 transitions, 6845 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:30,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:30,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:23:30,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:32,203 INFO L124 PetriNetUnfolderBase]: 3886/6206 cut-off events. [2024-06-20 16:23:32,204 INFO L125 PetriNetUnfolderBase]: For 1744589/1744589 co-relation queries the response was YES. [2024-06-20 16:23:32,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68479 conditions, 6206 events. 3886/6206 cut-off events. For 1744589/1744589 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 38183 event pairs, 771 based on Foata normal form. 1/6188 useless extension candidates. Maximal degree in co-relation 68275. Up to 5881 conditions per place. [2024-06-20 16:23:32,300 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 559 selfloop transitions, 54 changer transitions 0/623 dead transitions. [2024-06-20 16:23:32,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 623 transitions, 8113 flow [2024-06-20 16:23:32,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:32,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:32,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-20 16:23:32,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41534391534391535 [2024-06-20 16:23:32,302 INFO L175 Difference]: Start difference. First operand has 438 places, 609 transitions, 6845 flow. Second operand 9 states and 157 transitions. [2024-06-20 16:23:32,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 623 transitions, 8113 flow [2024-06-20 16:23:38,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 623 transitions, 7899 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-20 16:23:38,178 INFO L231 Difference]: Finished difference. Result has 438 places, 609 transitions, 6745 flow [2024-06-20 16:23:38,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6631, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6745, PETRI_PLACES=438, PETRI_TRANSITIONS=609} [2024-06-20 16:23:38,179 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 395 predicate places. [2024-06-20 16:23:38,179 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 609 transitions, 6745 flow [2024-06-20 16:23:38,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:38,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:38,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:38,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-20 16:23:38,180 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:23:38,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:38,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1102208967, now seen corresponding path program 7 times [2024-06-20 16:23:38,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:38,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033219770] [2024-06-20 16:23:38,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:38,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:39,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:39,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:39,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033219770] [2024-06-20 16:23:39,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033219770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:39,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:39,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:39,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182147645] [2024-06-20 16:23:39,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:39,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:39,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:39,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:39,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:39,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:23:39,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 609 transitions, 6745 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:39,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:39,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:23:39,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:41,064 INFO L124 PetriNetUnfolderBase]: 3915/6253 cut-off events. [2024-06-20 16:23:41,064 INFO L125 PetriNetUnfolderBase]: For 1780454/1780454 co-relation queries the response was YES. [2024-06-20 16:23:41,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69257 conditions, 6253 events. 3915/6253 cut-off events. For 1780454/1780454 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 38482 event pairs, 775 based on Foata normal form. 1/6237 useless extension candidates. Maximal degree in co-relation 69052. Up to 5965 conditions per place. [2024-06-20 16:23:41,167 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 580 selfloop transitions, 33 changer transitions 0/623 dead transitions. [2024-06-20 16:23:41,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 623 transitions, 8109 flow [2024-06-20 16:23:41,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:41,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:41,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-20 16:23:41,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3994708994708995 [2024-06-20 16:23:41,168 INFO L175 Difference]: Start difference. First operand has 438 places, 609 transitions, 6745 flow. Second operand 9 states and 151 transitions. [2024-06-20 16:23:41,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 623 transitions, 8109 flow [2024-06-20 16:23:47,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 623 transitions, 7983 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-20 16:23:47,686 INFO L231 Difference]: Finished difference. Result has 439 places, 612 transitions, 6805 flow [2024-06-20 16:23:47,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6619, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=576, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6805, PETRI_PLACES=439, PETRI_TRANSITIONS=612} [2024-06-20 16:23:47,694 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 396 predicate places. [2024-06-20 16:23:47,694 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 612 transitions, 6805 flow [2024-06-20 16:23:47,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:47,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:47,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:47,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-20 16:23:47,708 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:23:47,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:47,709 INFO L85 PathProgramCache]: Analyzing trace with hash -736988729, now seen corresponding path program 5 times [2024-06-20 16:23:47,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:47,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753276684] [2024-06-20 16:23:47,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:47,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:48,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:48,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:48,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753276684] [2024-06-20 16:23:48,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753276684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:48,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:48,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:48,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159921516] [2024-06-20 16:23:48,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:48,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:48,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:48,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:48,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:48,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:23:48,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 612 transitions, 6805 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:48,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:48,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:23:48,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:50,549 INFO L124 PetriNetUnfolderBase]: 3904/6232 cut-off events. [2024-06-20 16:23:50,550 INFO L125 PetriNetUnfolderBase]: For 1814434/1814434 co-relation queries the response was YES. [2024-06-20 16:23:50,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69413 conditions, 6232 events. 3904/6232 cut-off events. For 1814434/1814434 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 38292 event pairs, 769 based on Foata normal form. 3/6218 useless extension candidates. Maximal degree in co-relation 69207. Up to 5947 conditions per place. [2024-06-20 16:23:50,653 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 595 selfloop transitions, 23 changer transitions 0/628 dead transitions. [2024-06-20 16:23:50,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 628 transitions, 8167 flow [2024-06-20 16:23:50,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:50,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:50,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-20 16:23:50,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3941798941798942 [2024-06-20 16:23:50,654 INFO L175 Difference]: Start difference. First operand has 439 places, 612 transitions, 6805 flow. Second operand 9 states and 149 transitions. [2024-06-20 16:23:50,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 628 transitions, 8167 flow [2024-06-20 16:23:57,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 628 transitions, 8003 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:57,501 INFO L231 Difference]: Finished difference. Result has 441 places, 615 transitions, 6787 flow [2024-06-20 16:23:57,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6641, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6787, PETRI_PLACES=441, PETRI_TRANSITIONS=615} [2024-06-20 16:23:57,502 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 398 predicate places. [2024-06-20 16:23:57,502 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 615 transitions, 6787 flow [2024-06-20 16:23:57,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:57,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:57,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:57,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-20 16:23:57,503 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:23:57,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:57,503 INFO L85 PathProgramCache]: Analyzing trace with hash -295350605, now seen corresponding path program 6 times [2024-06-20 16:23:57,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:57,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373375225] [2024-06-20 16:23:57,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:57,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:58,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:58,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:58,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373375225] [2024-06-20 16:23:58,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373375225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:58,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:58,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:58,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619997834] [2024-06-20 16:23:58,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:58,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:58,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:58,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:58,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:58,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:23:58,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 615 transitions, 6787 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:58,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:58,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:23:58,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:00,557 INFO L124 PetriNetUnfolderBase]: 3930/6270 cut-off events. [2024-06-20 16:24:00,558 INFO L125 PetriNetUnfolderBase]: For 1850314/1850314 co-relation queries the response was YES. [2024-06-20 16:24:00,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70282 conditions, 6270 events. 3930/6270 cut-off events. For 1850314/1850314 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 38609 event pairs, 769 based on Foata normal form. 2/6255 useless extension candidates. Maximal degree in co-relation 70075. Up to 5954 conditions per place. [2024-06-20 16:24:00,661 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 590 selfloop transitions, 36 changer transitions 0/636 dead transitions. [2024-06-20 16:24:00,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 636 transitions, 8561 flow [2024-06-20 16:24:00,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:24:00,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:24:00,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-20 16:24:00,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-20 16:24:00,663 INFO L175 Difference]: Start difference. First operand has 441 places, 615 transitions, 6787 flow. Second operand 9 states and 154 transitions. [2024-06-20 16:24:00,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 636 transitions, 8561 flow [2024-06-20 16:24:07,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 636 transitions, 8443 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-20 16:24:07,358 INFO L231 Difference]: Finished difference. Result has 443 places, 621 transitions, 6941 flow [2024-06-20 16:24:07,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6669, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6941, PETRI_PLACES=443, PETRI_TRANSITIONS=621} [2024-06-20 16:24:07,359 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 400 predicate places. [2024-06-20 16:24:07,359 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 621 transitions, 6941 flow [2024-06-20 16:24:07,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:07,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:07,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:07,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-20 16:24:07,360 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:24:07,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:07,360 INFO L85 PathProgramCache]: Analyzing trace with hash -295350791, now seen corresponding path program 8 times [2024-06-20 16:24:07,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:07,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655329202] [2024-06-20 16:24:07,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:07,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:08,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:08,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:08,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655329202] [2024-06-20 16:24:08,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655329202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:08,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:08,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:24:08,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518785911] [2024-06-20 16:24:08,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:08,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:24:08,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:08,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:24:08,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:24:08,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:24:08,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 621 transitions, 6941 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:08,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:08,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:24:08,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:10,169 INFO L124 PetriNetUnfolderBase]: 3935/6277 cut-off events. [2024-06-20 16:24:10,170 INFO L125 PetriNetUnfolderBase]: For 1862068/1862068 co-relation queries the response was YES. [2024-06-20 16:24:10,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70422 conditions, 6277 events. 3935/6277 cut-off events. For 1862068/1862068 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 38655 event pairs, 774 based on Foata normal form. 1/6261 useless extension candidates. Maximal degree in co-relation 70214. Up to 6004 conditions per place. [2024-06-20 16:24:10,273 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 604 selfloop transitions, 21 changer transitions 0/635 dead transitions. [2024-06-20 16:24:10,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 635 transitions, 8335 flow [2024-06-20 16:24:10,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:24:10,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:24:10,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-20 16:24:10,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-20 16:24:10,274 INFO L175 Difference]: Start difference. First operand has 443 places, 621 transitions, 6941 flow. Second operand 9 states and 147 transitions. [2024-06-20 16:24:10,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 635 transitions, 8335 flow [2024-06-20 16:24:17,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 635 transitions, 8203 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-20 16:24:17,152 INFO L231 Difference]: Finished difference. Result has 447 places, 624 transitions, 6977 flow [2024-06-20 16:24:17,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6809, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6977, PETRI_PLACES=447, PETRI_TRANSITIONS=624} [2024-06-20 16:24:17,152 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 404 predicate places. [2024-06-20 16:24:17,153 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 624 transitions, 6977 flow [2024-06-20 16:24:17,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:17,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:17,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:17,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-20 16:24:17,153 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:24:17,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:17,154 INFO L85 PathProgramCache]: Analyzing trace with hash -295344095, now seen corresponding path program 7 times [2024-06-20 16:24:17,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:17,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549720917] [2024-06-20 16:24:17,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:17,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:18,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:18,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:18,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549720917] [2024-06-20 16:24:18,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549720917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:18,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:18,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:24:18,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300993936] [2024-06-20 16:24:18,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:18,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:24:18,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:18,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:24:18,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:24:18,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:24:18,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 624 transitions, 6977 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:18,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:18,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:24:18,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:19,979 INFO L124 PetriNetUnfolderBase]: 3929/6271 cut-off events. [2024-06-20 16:24:19,980 INFO L125 PetriNetUnfolderBase]: For 1875050/1875050 co-relation queries the response was YES. [2024-06-20 16:24:20,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70449 conditions, 6271 events. 3929/6271 cut-off events. For 1875050/1875050 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 38618 event pairs, 769 based on Foata normal form. 2/6256 useless extension candidates. Maximal degree in co-relation 70239. Up to 5956 conditions per place. [2024-06-20 16:24:20,081 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 593 selfloop transitions, 35 changer transitions 0/638 dead transitions. [2024-06-20 16:24:20,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 638 transitions, 8275 flow [2024-06-20 16:24:20,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:24:20,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:24:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-20 16:24:20,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-20 16:24:20,083 INFO L175 Difference]: Start difference. First operand has 447 places, 624 transitions, 6977 flow. Second operand 9 states and 154 transitions. [2024-06-20 16:24:20,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 638 transitions, 8275 flow [2024-06-20 16:24:26,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 638 transitions, 8077 flow, removed 80 selfloop flow, removed 7 redundant places. [2024-06-20 16:24:26,890 INFO L231 Difference]: Finished difference. Result has 449 places, 624 transitions, 6855 flow [2024-06-20 16:24:26,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6779, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6855, PETRI_PLACES=449, PETRI_TRANSITIONS=624} [2024-06-20 16:24:26,891 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 406 predicate places. [2024-06-20 16:24:26,891 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 624 transitions, 6855 flow [2024-06-20 16:24:26,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:26,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:26,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:26,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-20 16:24:26,892 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:24:26,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:26,892 INFO L85 PathProgramCache]: Analyzing trace with hash -523251755, now seen corresponding path program 8 times [2024-06-20 16:24:26,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:26,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830956199] [2024-06-20 16:24:26,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:26,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:27,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:27,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:27,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830956199] [2024-06-20 16:24:27,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830956199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:27,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:27,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:24:27,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325025928] [2024-06-20 16:24:27,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:27,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:24:27,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:27,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:24:27,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:24:27,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:24:27,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 624 transitions, 6855 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:27,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:27,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:24:27,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:29,862 INFO L124 PetriNetUnfolderBase]: 3955/6309 cut-off events. [2024-06-20 16:24:29,862 INFO L125 PetriNetUnfolderBase]: For 1921912/1921912 co-relation queries the response was YES. [2024-06-20 16:24:29,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71280 conditions, 6309 events. 3955/6309 cut-off events. For 1921912/1921912 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 38900 event pairs, 771 based on Foata normal form. 2/6294 useless extension candidates. Maximal degree in co-relation 71069. Up to 5945 conditions per place. [2024-06-20 16:24:29,966 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 582 selfloop transitions, 55 changer transitions 0/647 dead transitions. [2024-06-20 16:24:29,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 647 transitions, 8971 flow [2024-06-20 16:24:29,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:24:29,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:24:29,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-20 16:24:29,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-20 16:24:29,967 INFO L175 Difference]: Start difference. First operand has 449 places, 624 transitions, 6855 flow. Second operand 9 states and 161 transitions. [2024-06-20 16:24:29,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 647 transitions, 8971 flow [2024-06-20 16:24:36,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 647 transitions, 8883 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:36,113 INFO L231 Difference]: Finished difference. Result has 450 places, 630 transitions, 7083 flow [2024-06-20 16:24:36,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6767, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7083, PETRI_PLACES=450, PETRI_TRANSITIONS=630} [2024-06-20 16:24:36,114 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 407 predicate places. [2024-06-20 16:24:36,114 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 630 transitions, 7083 flow [2024-06-20 16:24:36,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:36,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:36,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:36,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-20 16:24:36,114 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:24:36,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:36,115 INFO L85 PathProgramCache]: Analyzing trace with hash -973164089, now seen corresponding path program 9 times [2024-06-20 16:24:36,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:36,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581662523] [2024-06-20 16:24:36,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:36,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:36,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:36,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:36,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581662523] [2024-06-20 16:24:36,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581662523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:36,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:36,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:24:36,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635953007] [2024-06-20 16:24:36,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:36,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:24:36,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:36,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:24:36,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:24:37,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:24:37,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 630 transitions, 7083 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:37,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:37,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:24:37,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:38,955 INFO L124 PetriNetUnfolderBase]: 3941/6291 cut-off events. [2024-06-20 16:24:38,955 INFO L125 PetriNetUnfolderBase]: For 1923377/1923377 co-relation queries the response was YES. [2024-06-20 16:24:39,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71028 conditions, 6291 events. 3941/6291 cut-off events. For 1923377/1923377 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 38774 event pairs, 771 based on Foata normal form. 2/6276 useless extension candidates. Maximal degree in co-relation 70816. Up to 5934 conditions per place. [2024-06-20 16:24:39,060 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 579 selfloop transitions, 56 changer transitions 0/645 dead transitions. [2024-06-20 16:24:39,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 645 transitions, 8695 flow [2024-06-20 16:24:39,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:24:39,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:24:39,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-20 16:24:39,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41798941798941797 [2024-06-20 16:24:39,061 INFO L175 Difference]: Start difference. First operand has 450 places, 630 transitions, 7083 flow. Second operand 9 states and 158 transitions. [2024-06-20 16:24:39,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 645 transitions, 8695 flow [2024-06-20 16:24:44,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 645 transitions, 8346 flow, removed 96 selfloop flow, removed 7 redundant places. [2024-06-20 16:24:44,606 INFO L231 Difference]: Finished difference. Result has 452 places, 630 transitions, 6852 flow [2024-06-20 16:24:44,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6734, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6852, PETRI_PLACES=452, PETRI_TRANSITIONS=630} [2024-06-20 16:24:44,620 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 409 predicate places. [2024-06-20 16:24:44,620 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 630 transitions, 6852 flow [2024-06-20 16:24:44,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:44,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:44,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:44,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-20 16:24:44,624 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:24:44,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:44,624 INFO L85 PathProgramCache]: Analyzing trace with hash -28126991, now seen corresponding path program 5 times [2024-06-20 16:24:44,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:44,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827690140] [2024-06-20 16:24:44,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:44,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:45,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:45,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:45,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827690140] [2024-06-20 16:24:45,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827690140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:45,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:45,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:24:45,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128950144] [2024-06-20 16:24:45,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:45,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:24:45,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:45,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:24:45,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:24:45,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-20 16:24:45,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 630 transitions, 6852 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:45,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:45,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-20 16:24:45,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:47,647 INFO L124 PetriNetUnfolderBase]: 3860/6208 cut-off events. [2024-06-20 16:24:47,648 INFO L125 PetriNetUnfolderBase]: For 1924370/1924370 co-relation queries the response was YES. [2024-06-20 16:24:47,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69984 conditions, 6208 events. 3860/6208 cut-off events. For 1924370/1924370 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 38725 event pairs, 752 based on Foata normal form. 2/6193 useless extension candidates. Maximal degree in co-relation 69772. Up to 5774 conditions per place. [2024-06-20 16:24:47,754 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 577 selfloop transitions, 20 changer transitions 0/644 dead transitions. [2024-06-20 16:24:47,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 644 transitions, 8172 flow [2024-06-20 16:24:47,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:24:47,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:24:47,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-20 16:24:47,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41005291005291006 [2024-06-20 16:24:47,755 INFO L175 Difference]: Start difference. First operand has 452 places, 630 transitions, 6852 flow. Second operand 9 states and 155 transitions. [2024-06-20 16:24:47,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 644 transitions, 8172 flow [2024-06-20 16:24:55,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 644 transitions, 8058 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-20 16:24:55,757 INFO L231 Difference]: Finished difference. Result has 454 places, 632 transitions, 6881 flow [2024-06-20 16:24:55,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6738, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=610, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6881, PETRI_PLACES=454, PETRI_TRANSITIONS=632} [2024-06-20 16:24:55,758 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 411 predicate places. [2024-06-20 16:24:55,758 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 632 transitions, 6881 flow [2024-06-20 16:24:55,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:55,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:55,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:55,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-20 16:24:55,759 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:24:55,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:55,759 INFO L85 PathProgramCache]: Analyzing trace with hash -523429571, now seen corresponding path program 9 times [2024-06-20 16:24:55,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:55,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419062868] [2024-06-20 16:24:55,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:55,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:56,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:56,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:56,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419062868] [2024-06-20 16:24:56,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419062868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:56,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:56,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:24:56,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258324120] [2024-06-20 16:24:56,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:56,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:24:56,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:56,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:24:56,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:24:56,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:24:56,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 632 transitions, 6881 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:56,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:56,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:24:56,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:58,669 INFO L124 PetriNetUnfolderBase]: 3949/6301 cut-off events. [2024-06-20 16:24:58,669 INFO L125 PetriNetUnfolderBase]: For 1931873/1931873 co-relation queries the response was YES. [2024-06-20 16:24:58,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70665 conditions, 6301 events. 3949/6301 cut-off events. For 1931873/1931873 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 38839 event pairs, 772 based on Foata normal form. 1/6285 useless extension candidates. Maximal degree in co-relation 70452. Up to 5996 conditions per place. [2024-06-20 16:24:58,775 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 595 selfloop transitions, 45 changer transitions 0/650 dead transitions. [2024-06-20 16:24:58,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 650 transitions, 8739 flow [2024-06-20 16:24:58,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:24:58,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:24:58,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-20 16:24:58,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4021164021164021 [2024-06-20 16:24:58,776 INFO L175 Difference]: Start difference. First operand has 454 places, 632 transitions, 6881 flow. Second operand 9 states and 152 transitions. [2024-06-20 16:24:58,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 650 transitions, 8739 flow [2024-06-20 16:25:06,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 650 transitions, 8612 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-20 16:25:06,538 INFO L231 Difference]: Finished difference. Result has 456 places, 638 transitions, 7100 flow [2024-06-20 16:25:06,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6754, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7100, PETRI_PLACES=456, PETRI_TRANSITIONS=638} [2024-06-20 16:25:06,539 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 413 predicate places. [2024-06-20 16:25:06,539 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 638 transitions, 7100 flow [2024-06-20 16:25:06,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:06,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:06,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:06,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-20 16:25:06,540 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:25:06,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:06,540 INFO L85 PathProgramCache]: Analyzing trace with hash -973343579, now seen corresponding path program 10 times [2024-06-20 16:25:06,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:06,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114873764] [2024-06-20 16:25:06,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:06,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:07,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:07,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:07,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114873764] [2024-06-20 16:25:07,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114873764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:07,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:07,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:25:07,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339403113] [2024-06-20 16:25:07,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:07,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:25:07,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:07,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:25:07,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:25:07,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:25:07,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 638 transitions, 7100 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:07,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:07,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:25:07,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:09,349 INFO L124 PetriNetUnfolderBase]: 3943/6293 cut-off events. [2024-06-20 16:25:09,349 INFO L125 PetriNetUnfolderBase]: For 1948472/1948472 co-relation queries the response was YES. [2024-06-20 16:25:09,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70715 conditions, 6293 events. 3943/6293 cut-off events. For 1948472/1948472 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 38764 event pairs, 765 based on Foata normal form. 2/6278 useless extension candidates. Maximal degree in co-relation 70501. Up to 5935 conditions per place. [2024-06-20 16:25:09,457 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 584 selfloop transitions, 58 changer transitions 0/652 dead transitions. [2024-06-20 16:25:09,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 652 transitions, 8426 flow [2024-06-20 16:25:09,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:25:09,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:25:09,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-20 16:25:09,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-06-20 16:25:09,458 INFO L175 Difference]: Start difference. First operand has 456 places, 638 transitions, 7100 flow. Second operand 9 states and 156 transitions. [2024-06-20 16:25:09,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 652 transitions, 8426 flow [2024-06-20 16:25:17,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 652 transitions, 8171 flow, removed 109 selfloop flow, removed 5 redundant places. [2024-06-20 16:25:17,174 INFO L231 Difference]: Finished difference. Result has 460 places, 638 transitions, 6967 flow [2024-06-20 16:25:17,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6845, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6967, PETRI_PLACES=460, PETRI_TRANSITIONS=638} [2024-06-20 16:25:17,175 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 417 predicate places. [2024-06-20 16:25:17,175 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 638 transitions, 6967 flow [2024-06-20 16:25:17,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:17,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:17,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:17,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-20 16:25:17,175 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:25:17,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:17,176 INFO L85 PathProgramCache]: Analyzing trace with hash -973343765, now seen corresponding path program 10 times [2024-06-20 16:25:17,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:17,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64715543] [2024-06-20 16:25:17,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:17,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:18,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:18,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:18,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64715543] [2024-06-20 16:25:18,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64715543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:18,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:18,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:25:18,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956313908] [2024-06-20 16:25:18,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:18,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:25:18,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:18,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:25:18,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:25:18,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:25:18,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 638 transitions, 6967 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:18,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:18,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:25:18,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:20,091 INFO L124 PetriNetUnfolderBase]: 3932/6279 cut-off events. [2024-06-20 16:25:20,092 INFO L125 PetriNetUnfolderBase]: For 1937170/1937170 co-relation queries the response was YES. [2024-06-20 16:25:20,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70491 conditions, 6279 events. 3932/6279 cut-off events. For 1937170/1937170 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 38663 event pairs, 771 based on Foata normal form. 1/6263 useless extension candidates. Maximal degree in co-relation 70275. Up to 5987 conditions per place. [2024-06-20 16:25:20,193 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 605 selfloop transitions, 34 changer transitions 0/649 dead transitions. [2024-06-20 16:25:20,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 649 transitions, 8275 flow [2024-06-20 16:25:20,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:25:20,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:25:20,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-20 16:25:20,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968253968253968 [2024-06-20 16:25:20,195 INFO L175 Difference]: Start difference. First operand has 460 places, 638 transitions, 6967 flow. Second operand 9 states and 150 transitions. [2024-06-20 16:25:20,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 649 transitions, 8275 flow [2024-06-20 16:25:26,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 649 transitions, 8079 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-20 16:25:26,667 INFO L231 Difference]: Finished difference. Result has 460 places, 638 transitions, 6845 flow [2024-06-20 16:25:26,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6771, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6845, PETRI_PLACES=460, PETRI_TRANSITIONS=638} [2024-06-20 16:25:26,674 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 417 predicate places. [2024-06-20 16:25:26,674 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 638 transitions, 6845 flow [2024-06-20 16:25:26,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:26,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:26,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:26,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-20 16:25:26,675 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:25:26,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:26,675 INFO L85 PathProgramCache]: Analyzing trace with hash -286762055, now seen corresponding path program 1 times [2024-06-20 16:25:26,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:26,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499649815] [2024-06-20 16:25:26,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:26,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:27,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:27,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:27,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499649815] [2024-06-20 16:25:27,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499649815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:27,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:27,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:25:27,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158720332] [2024-06-20 16:25:27,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:27,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:25:27,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:27,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:25:27,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:25:27,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:25:27,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 638 transitions, 6845 flow. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:27,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:27,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:25:27,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:29,912 INFO L124 PetriNetUnfolderBase]: 4147/6515 cut-off events. [2024-06-20 16:25:29,912 INFO L125 PetriNetUnfolderBase]: For 2258882/2258882 co-relation queries the response was YES. [2024-06-20 16:25:29,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75653 conditions, 6515 events. 4147/6515 cut-off events. For 2258882/2258882 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 39052 event pairs, 842 based on Foata normal form. 2/6515 useless extension candidates. Maximal degree in co-relation 75436. Up to 6320 conditions per place. [2024-06-20 16:25:30,023 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 626 selfloop transitions, 22 changer transitions 0/652 dead transitions. [2024-06-20 16:25:30,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 652 transitions, 8255 flow [2024-06-20 16:25:30,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:25:30,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:25:30,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-20 16:25:30,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-20 16:25:30,024 INFO L175 Difference]: Start difference. First operand has 460 places, 638 transitions, 6845 flow. Second operand 9 states and 140 transitions. [2024-06-20 16:25:30,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 652 transitions, 8255 flow [2024-06-20 16:25:39,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 652 transitions, 8159 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-20 16:25:39,452 INFO L231 Difference]: Finished difference. Result has 461 places, 640 transitions, 6884 flow [2024-06-20 16:25:39,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6749, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6884, PETRI_PLACES=461, PETRI_TRANSITIONS=640} [2024-06-20 16:25:39,453 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 418 predicate places. [2024-06-20 16:25:39,453 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 640 transitions, 6884 flow [2024-06-20 16:25:39,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:39,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:39,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:39,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-20 16:25:39,454 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:25:39,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:39,454 INFO L85 PathProgramCache]: Analyzing trace with hash 586888121, now seen corresponding path program 1 times [2024-06-20 16:25:39,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:39,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689497538] [2024-06-20 16:25:39,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:39,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:40,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:40,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:40,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689497538] [2024-06-20 16:25:40,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689497538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:40,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:40,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:25:40,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304667514] [2024-06-20 16:25:40,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:40,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:25:40,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:40,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:25:40,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:25:40,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:25:40,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 640 transitions, 6884 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:40,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:40,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:25:40,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:42,763 INFO L124 PetriNetUnfolderBase]: 4068/6440 cut-off events. [2024-06-20 16:25:42,763 INFO L125 PetriNetUnfolderBase]: For 2274569/2274571 co-relation queries the response was YES. [2024-06-20 16:25:42,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75657 conditions, 6440 events. 4068/6440 cut-off events. For 2274569/2274571 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 39058 event pairs, 764 based on Foata normal form. 3/6441 useless extension candidates. Maximal degree in co-relation 75439. Up to 5948 conditions per place. [2024-06-20 16:25:42,874 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 555 selfloop transitions, 72 changer transitions 0/670 dead transitions. [2024-06-20 16:25:42,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 670 transitions, 8362 flow [2024-06-20 16:25:43,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:25:43,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:25:43,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-20 16:25:43,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-20 16:25:43,067 INFO L175 Difference]: Start difference. First operand has 461 places, 640 transitions, 6884 flow. Second operand 9 states and 165 transitions. [2024-06-20 16:25:43,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 670 transitions, 8362 flow [2024-06-20 16:25:52,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 670 transitions, 8243 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-20 16:25:52,677 INFO L231 Difference]: Finished difference. Result has 463 places, 643 transitions, 7060 flow [2024-06-20 16:25:52,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6765, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7060, PETRI_PLACES=463, PETRI_TRANSITIONS=643} [2024-06-20 16:25:52,677 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 420 predicate places. [2024-06-20 16:25:52,678 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 643 transitions, 7060 flow [2024-06-20 16:25:52,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:52,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:52,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:52,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-20 16:25:52,692 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:25:52,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:52,693 INFO L85 PathProgramCache]: Analyzing trace with hash 587008091, now seen corresponding path program 2 times [2024-06-20 16:25:52,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:52,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117938805] [2024-06-20 16:25:52,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:52,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:53,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:53,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:53,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117938805] [2024-06-20 16:25:53,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117938805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:53,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:53,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:25:53,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425634735] [2024-06-20 16:25:53,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:53,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:25:53,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:53,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:25:53,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:25:54,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:25:54,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 643 transitions, 7060 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:54,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:54,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:25:54,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:56,182 INFO L124 PetriNetUnfolderBase]: 4073/6447 cut-off events. [2024-06-20 16:25:56,182 INFO L125 PetriNetUnfolderBase]: For 2306603/2306605 co-relation queries the response was YES. [2024-06-20 16:25:56,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76413 conditions, 6447 events. 4073/6447 cut-off events. For 2306603/2306605 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 39109 event pairs, 767 based on Foata normal form. 3/6448 useless extension candidates. Maximal degree in co-relation 76194. Up to 5827 conditions per place. [2024-06-20 16:25:56,292 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 486 selfloop transitions, 145 changer transitions 0/674 dead transitions. [2024-06-20 16:25:56,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 674 transitions, 8994 flow [2024-06-20 16:25:56,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:25:56,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:25:56,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-20 16:25:56,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-20 16:25:56,293 INFO L175 Difference]: Start difference. First operand has 463 places, 643 transitions, 7060 flow. Second operand 9 states and 169 transitions. [2024-06-20 16:25:56,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 674 transitions, 8994 flow [2024-06-20 16:26:04,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 674 transitions, 8731 flow, removed 64 selfloop flow, removed 7 redundant places. [2024-06-20 16:26:04,451 INFO L231 Difference]: Finished difference. Result has 465 places, 649 transitions, 7384 flow [2024-06-20 16:26:04,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6797, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7384, PETRI_PLACES=465, PETRI_TRANSITIONS=649} [2024-06-20 16:26:04,452 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 422 predicate places. [2024-06-20 16:26:04,452 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 649 transitions, 7384 flow [2024-06-20 16:26:04,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:26:04,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:04,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:04,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-20 16:26:04,452 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:26:04,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:04,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1850195117, now seen corresponding path program 1 times [2024-06-20 16:26:04,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:04,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168942411] [2024-06-20 16:26:04,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:04,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:05,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:05,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:05,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168942411] [2024-06-20 16:26:05,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168942411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:05,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:05,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:26:05,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169883798] [2024-06-20 16:26:05,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:05,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:26:05,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:05,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:26:05,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:26:05,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:26:05,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 649 transitions, 7384 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:26:05,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:05,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:26:05,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:07,970 INFO L124 PetriNetUnfolderBase]: 4162/6540 cut-off events. [2024-06-20 16:26:07,970 INFO L125 PetriNetUnfolderBase]: For 2340329/2340331 co-relation queries the response was YES. [2024-06-20 16:26:08,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77525 conditions, 6540 events. 4162/6540 cut-off events. For 2340329/2340331 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 39269 event pairs, 792 based on Foata normal form. 3/6541 useless extension candidates. Maximal degree in co-relation 77305. Up to 6079 conditions per place. [2024-06-20 16:26:08,215 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 538 selfloop transitions, 138 changer transitions 0/680 dead transitions. [2024-06-20 16:26:08,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 680 transitions, 9370 flow [2024-06-20 16:26:08,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:26:08,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:26:08,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-20 16:26:08,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312169312169312 [2024-06-20 16:26:08,216 INFO L175 Difference]: Start difference. First operand has 465 places, 649 transitions, 7384 flow. Second operand 9 states and 163 transitions. [2024-06-20 16:26:08,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 680 transitions, 9370 flow [2024-06-20 16:26:17,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 680 transitions, 9081 flow, removed 87 selfloop flow, removed 5 redundant places. [2024-06-20 16:26:17,966 INFO L231 Difference]: Finished difference. Result has 469 places, 655 transitions, 7628 flow [2024-06-20 16:26:17,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7095, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7628, PETRI_PLACES=469, PETRI_TRANSITIONS=655} [2024-06-20 16:26:17,966 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 426 predicate places. [2024-06-20 16:26:17,966 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 655 transitions, 7628 flow [2024-06-20 16:26:17,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:26:17,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:17,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:17,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-20 16:26:17,967 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:26:17,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:17,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1673057087, now seen corresponding path program 2 times [2024-06-20 16:26:17,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:17,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470630582] [2024-06-20 16:26:17,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:17,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:18,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:18,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:18,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470630582] [2024-06-20 16:26:18,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470630582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:18,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:18,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:26:18,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533138676] [2024-06-20 16:26:18,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:18,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:26:18,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:18,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:26:18,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:26:19,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:26:19,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 655 transitions, 7628 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:26:19,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:19,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:26:19,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:21,094 INFO L124 PetriNetUnfolderBase]: 4172/6554 cut-off events. [2024-06-20 16:26:21,094 INFO L125 PetriNetUnfolderBase]: For 2371019/2371021 co-relation queries the response was YES. [2024-06-20 16:26:21,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78373 conditions, 6554 events. 4172/6554 cut-off events. For 2371019/2371021 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 39392 event pairs, 796 based on Foata normal form. 3/6555 useless extension candidates. Maximal degree in co-relation 78151. Up to 6220 conditions per place. [2024-06-20 16:26:21,413 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 584 selfloop transitions, 94 changer transitions 0/682 dead transitions. [2024-06-20 16:26:21,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 682 transitions, 9207 flow [2024-06-20 16:26:21,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:26:21,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:26:21,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-20 16:26:21,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41534391534391535 [2024-06-20 16:26:21,415 INFO L175 Difference]: Start difference. First operand has 469 places, 655 transitions, 7628 flow. Second operand 9 states and 157 transitions. [2024-06-20 16:26:21,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 682 transitions, 9207 flow [2024-06-20 16:26:30,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 682 transitions, 8912 flow, removed 116 selfloop flow, removed 4 redundant places. [2024-06-20 16:26:30,854 INFO L231 Difference]: Finished difference. Result has 474 places, 661 transitions, 7690 flow [2024-06-20 16:26:30,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7387, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7690, PETRI_PLACES=474, PETRI_TRANSITIONS=661} [2024-06-20 16:26:30,855 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 431 predicate places. [2024-06-20 16:26:30,855 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 661 transitions, 7690 flow [2024-06-20 16:26:30,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:26:30,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:30,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:30,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-20 16:26:30,856 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:26:30,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:30,856 INFO L85 PathProgramCache]: Analyzing trace with hash -208373325, now seen corresponding path program 3 times [2024-06-20 16:26:30,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:30,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778491842] [2024-06-20 16:26:30,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:30,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:31,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:31,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:31,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778491842] [2024-06-20 16:26:31,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778491842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:31,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:31,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:26:31,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876180062] [2024-06-20 16:26:31,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:31,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:26:31,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:31,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:26:31,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:26:31,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:26:31,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 661 transitions, 7690 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:26:31,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:31,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:26:31,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:34,105 INFO L124 PetriNetUnfolderBase]: 4202/6594 cut-off events. [2024-06-20 16:26:34,106 INFO L125 PetriNetUnfolderBase]: For 2397333/2397333 co-relation queries the response was YES. [2024-06-20 16:26:34,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78819 conditions, 6594 events. 4202/6594 cut-off events. For 2397333/2397333 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 39597 event pairs, 811 based on Foata normal form. 1/6592 useless extension candidates. Maximal degree in co-relation 78595. Up to 6255 conditions per place. [2024-06-20 16:26:34,226 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 593 selfloop transitions, 99 changer transitions 0/696 dead transitions. [2024-06-20 16:26:34,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 696 transitions, 9427 flow [2024-06-20 16:26:34,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:26:34,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:26:34,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-20 16:26:34,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 16:26:34,228 INFO L175 Difference]: Start difference. First operand has 474 places, 661 transitions, 7690 flow. Second operand 10 states and 168 transitions. [2024-06-20 16:26:34,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 696 transitions, 9427 flow [2024-06-20 16:26:45,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 696 transitions, 9090 flow, removed 64 selfloop flow, removed 6 redundant places. [2024-06-20 16:26:45,131 INFO L231 Difference]: Finished difference. Result has 480 places, 679 transitions, 7920 flow [2024-06-20 16:26:45,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7442, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7920, PETRI_PLACES=480, PETRI_TRANSITIONS=679} [2024-06-20 16:26:45,131 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 437 predicate places. [2024-06-20 16:26:45,132 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 679 transitions, 7920 flow [2024-06-20 16:26:45,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:26:45,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:45,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:45,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-20 16:26:45,132 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:26:45,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:45,133 INFO L85 PathProgramCache]: Analyzing trace with hash -208373511, now seen corresponding path program 3 times [2024-06-20 16:26:45,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:45,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545170497] [2024-06-20 16:26:45,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:45,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:46,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:46,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:46,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545170497] [2024-06-20 16:26:46,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545170497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:46,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:46,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:26:46,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197378602] [2024-06-20 16:26:46,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:46,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:26:46,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:46,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:26:46,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:26:46,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:26:46,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 679 transitions, 7920 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:26:46,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:46,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:26:46,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:48,482 INFO L124 PetriNetUnfolderBase]: 4122/6520 cut-off events. [2024-06-20 16:26:48,482 INFO L125 PetriNetUnfolderBase]: For 2429516/2429518 co-relation queries the response was YES. [2024-06-20 16:26:48,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78649 conditions, 6520 events. 4122/6520 cut-off events. For 2429516/2429518 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 39599 event pairs, 778 based on Foata normal form. 3/6521 useless extension candidates. Maximal degree in co-relation 78422. Up to 6028 conditions per place. [2024-06-20 16:26:48,597 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 553 selfloop transitions, 97 changer transitions 0/703 dead transitions. [2024-06-20 16:26:48,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 703 transitions, 9392 flow [2024-06-20 16:26:48,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:26:48,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:26:48,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-20 16:26:48,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-20 16:26:48,598 INFO L175 Difference]: Start difference. First operand has 480 places, 679 transitions, 7920 flow. Second operand 9 states and 162 transitions. [2024-06-20 16:26:48,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 703 transitions, 9392 flow [2024-06-20 16:26:59,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 703 transitions, 9316 flow, removed 37 selfloop flow, removed 1 redundant places. [2024-06-20 16:26:59,312 INFO L231 Difference]: Finished difference. Result has 488 places, 682 transitions, 8161 flow [2024-06-20 16:26:59,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7844, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8161, PETRI_PLACES=488, PETRI_TRANSITIONS=682} [2024-06-20 16:26:59,312 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 445 predicate places. [2024-06-20 16:26:59,312 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 682 transitions, 8161 flow [2024-06-20 16:26:59,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:26:59,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:59,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:59,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-20 16:26:59,313 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:26:59,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:59,313 INFO L85 PathProgramCache]: Analyzing trace with hash -128481988, now seen corresponding path program 1 times [2024-06-20 16:26:59,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:59,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953234529] [2024-06-20 16:26:59,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:59,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:27:00,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:27:00,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:27:00,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953234529] [2024-06-20 16:27:00,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953234529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:27:00,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:27:00,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:27:00,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884206935] [2024-06-20 16:27:00,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:27:00,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:27:00,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:27:00,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:27:00,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:27:00,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:27:00,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 682 transitions, 8161 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:27:00,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:27:00,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:27:00,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:27:02,588 INFO L124 PetriNetUnfolderBase]: 4136/6539 cut-off events. [2024-06-20 16:27:02,589 INFO L125 PetriNetUnfolderBase]: For 2472370/2472372 co-relation queries the response was YES. [2024-06-20 16:27:02,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79452 conditions, 6539 events. 4136/6539 cut-off events. For 2472370/2472372 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 39720 event pairs, 789 based on Foata normal form. 3/6540 useless extension candidates. Maximal degree in co-relation 79222. Up to 6117 conditions per place. [2024-06-20 16:27:02,710 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 631 selfloop transitions, 34 changer transitions 0/718 dead transitions. [2024-06-20 16:27:02,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 718 transitions, 10127 flow [2024-06-20 16:27:02,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:27:02,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:27:02,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-20 16:27:02,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4238095238095238 [2024-06-20 16:27:02,711 INFO L175 Difference]: Start difference. First operand has 488 places, 682 transitions, 8161 flow. Second operand 10 states and 178 transitions. [2024-06-20 16:27:02,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 718 transitions, 10127 flow [2024-06-20 16:27:12,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 718 transitions, 9848 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-20 16:27:12,687 INFO L231 Difference]: Finished difference. Result has 492 places, 691 transitions, 8196 flow [2024-06-20 16:27:12,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7882, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8196, PETRI_PLACES=492, PETRI_TRANSITIONS=691} [2024-06-20 16:27:12,687 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 449 predicate places. [2024-06-20 16:27:12,688 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 691 transitions, 8196 flow [2024-06-20 16:27:12,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:27:12,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:27:12,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:27:12,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-20 16:27:12,688 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:27:12,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:27:12,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1100904745, now seen corresponding path program 1 times [2024-06-20 16:27:12,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:27:12,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241282747] [2024-06-20 16:27:12,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:27:12,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:27:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:27:13,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:27:13,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:27:13,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241282747] [2024-06-20 16:27:13,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241282747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:27:13,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:27:13,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:27:13,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338320923] [2024-06-20 16:27:13,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:27:13,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:27:13,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:27:13,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:27:13,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:27:13,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:27:13,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 691 transitions, 8196 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:27:13,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:27:13,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:27:13,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:27:15,876 INFO L124 PetriNetUnfolderBase]: 4230/6635 cut-off events. [2024-06-20 16:27:15,877 INFO L125 PetriNetUnfolderBase]: For 2516233/2516235 co-relation queries the response was YES. [2024-06-20 16:27:15,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80590 conditions, 6635 events. 4230/6635 cut-off events. For 2516233/2516235 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 39874 event pairs, 810 based on Foata normal form. 4/6637 useless extension candidates. Maximal degree in co-relation 80358. Up to 6364 conditions per place. [2024-06-20 16:27:16,002 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 676 selfloop transitions, 37 changer transitions 0/717 dead transitions. [2024-06-20 16:27:16,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 717 transitions, 9838 flow [2024-06-20 16:27:16,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:27:16,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:27:16,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-20 16:27:16,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41005291005291006 [2024-06-20 16:27:16,004 INFO L175 Difference]: Start difference. First operand has 492 places, 691 transitions, 8196 flow. Second operand 9 states and 155 transitions. [2024-06-20 16:27:16,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 717 transitions, 9838 flow [2024-06-20 16:27:29,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 717 transitions, 9673 flow, removed 68 selfloop flow, removed 5 redundant places. [2024-06-20 16:27:29,011 INFO L231 Difference]: Finished difference. Result has 496 places, 694 transitions, 8248 flow [2024-06-20 16:27:29,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8031, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8248, PETRI_PLACES=496, PETRI_TRANSITIONS=694} [2024-06-20 16:27:29,011 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 453 predicate places. [2024-06-20 16:27:29,011 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 694 transitions, 8248 flow [2024-06-20 16:27:29,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:27:29,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:27:29,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:27:29,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-20 16:27:29,012 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:27:29,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:27:29,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1462860508, now seen corresponding path program 2 times [2024-06-20 16:27:29,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:27:29,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281378586] [2024-06-20 16:27:29,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:27:29,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:27:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:27:30,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:27:30,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:27:30,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281378586] [2024-06-20 16:27:30,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281378586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:27:30,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:27:30,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:27:30,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449444476] [2024-06-20 16:27:30,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:27:30,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:27:30,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:27:30,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:27:30,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:27:30,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:27:30,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 694 transitions, 8248 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:27:30,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:27:30,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:27:30,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:27:32,526 INFO L124 PetriNetUnfolderBase]: 4143/6547 cut-off events. [2024-06-20 16:27:32,527 INFO L125 PetriNetUnfolderBase]: For 2527986/2527988 co-relation queries the response was YES. [2024-06-20 16:27:32,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80479 conditions, 6547 events. 4143/6547 cut-off events. For 2527986/2527988 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 39779 event pairs, 788 based on Foata normal form. 3/6548 useless extension candidates. Maximal degree in co-relation 80245. Up to 6136 conditions per place. [2024-06-20 16:27:32,642 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 634 selfloop transitions, 28 changer transitions 0/716 dead transitions. [2024-06-20 16:27:32,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 716 transitions, 9644 flow [2024-06-20 16:27:32,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:27:32,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:27:32,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-20 16:27:32,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2024-06-20 16:27:32,644 INFO L175 Difference]: Start difference. First operand has 496 places, 694 transitions, 8248 flow. Second operand 9 states and 159 transitions. [2024-06-20 16:27:32,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 716 transitions, 9644 flow [2024-06-20 16:27:44,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 716 transitions, 9397 flow, removed 89 selfloop flow, removed 7 redundant places. [2024-06-20 16:27:44,566 INFO L231 Difference]: Finished difference. Result has 498 places, 694 transitions, 8063 flow [2024-06-20 16:27:44,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8001, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8063, PETRI_PLACES=498, PETRI_TRANSITIONS=694} [2024-06-20 16:27:44,567 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 455 predicate places. [2024-06-20 16:27:44,567 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 694 transitions, 8063 flow [2024-06-20 16:27:44,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:27:44,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:27:44,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:27:44,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-20 16:27:44,567 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:27:44,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:27:44,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1733096929, now seen corresponding path program 2 times [2024-06-20 16:27:44,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:27:44,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668303767] [2024-06-20 16:27:44,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:27:44,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:27:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:27:45,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:27:45,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:27:45,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668303767] [2024-06-20 16:27:45,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668303767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:27:45,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:27:45,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:27:45,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645606585] [2024-06-20 16:27:45,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:27:45,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:27:45,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:27:45,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:27:45,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:27:45,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:27:45,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 694 transitions, 8063 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:27:45,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:27:45,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:27:45,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:27:47,761 INFO L124 PetriNetUnfolderBase]: 4269/6691 cut-off events. [2024-06-20 16:27:47,761 INFO L125 PetriNetUnfolderBase]: For 2623656/2623658 co-relation queries the response was YES. [2024-06-20 16:27:47,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82434 conditions, 6691 events. 4269/6691 cut-off events. For 2623656/2623658 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 40292 event pairs, 818 based on Foata normal form. 4/6693 useless extension candidates. Maximal degree in co-relation 82199. Up to 6240 conditions per place. [2024-06-20 16:27:47,882 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 635 selfloop transitions, 89 changer transitions 0/728 dead transitions. [2024-06-20 16:27:47,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 728 transitions, 10695 flow [2024-06-20 16:27:47,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:27:47,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:27:47,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-20 16:27:47,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312169312169312 [2024-06-20 16:27:47,884 INFO L175 Difference]: Start difference. First operand has 498 places, 694 transitions, 8063 flow. Second operand 9 states and 163 transitions. [2024-06-20 16:27:47,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 728 transitions, 10695 flow [2024-06-20 16:27:59,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 728 transitions, 10623 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-20 16:27:59,711 INFO L231 Difference]: Finished difference. Result has 499 places, 703 transitions, 8589 flow [2024-06-20 16:27:59,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7991, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=611, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8589, PETRI_PLACES=499, PETRI_TRANSITIONS=703} [2024-06-20 16:27:59,712 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 456 predicate places. [2024-06-20 16:27:59,712 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 703 transitions, 8589 flow [2024-06-20 16:27:59,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:27:59,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:27:59,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:27:59,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-20 16:27:59,712 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:27:59,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:27:59,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1733097146, now seen corresponding path program 1 times [2024-06-20 16:27:59,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:27:59,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335405101] [2024-06-20 16:27:59,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:27:59,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:27:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:28:00,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:28:00,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:28:00,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335405101] [2024-06-20 16:28:00,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335405101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:28:00,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:28:00,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:28:00,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720789103] [2024-06-20 16:28:00,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:28:00,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:28:00,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:28:00,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:28:00,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:28:00,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:28:00,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 703 transitions, 8589 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:28:00,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:28:00,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:28:00,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:28:02,861 INFO L124 PetriNetUnfolderBase]: 4295/6727 cut-off events. [2024-06-20 16:28:02,862 INFO L125 PetriNetUnfolderBase]: For 2692489/2692491 co-relation queries the response was YES. [2024-06-20 16:28:02,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83942 conditions, 6727 events. 4295/6727 cut-off events. For 2692489/2692491 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 40454 event pairs, 804 based on Foata normal form. 4/6729 useless extension candidates. Maximal degree in co-relation 83706. Up to 6339 conditions per place. [2024-06-20 16:28:02,987 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 663 selfloop transitions, 75 changer transitions 0/742 dead transitions. [2024-06-20 16:28:02,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 742 transitions, 10787 flow [2024-06-20 16:28:02,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:28:02,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:28:02,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-20 16:28:02,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-20 16:28:02,989 INFO L175 Difference]: Start difference. First operand has 499 places, 703 transitions, 8589 flow. Second operand 9 states and 162 transitions. [2024-06-20 16:28:02,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 742 transitions, 10787 flow [2024-06-20 16:28:12,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 742 transitions, 10512 flow, removed 109 selfloop flow, removed 4 redundant places. [2024-06-20 16:28:12,200 INFO L231 Difference]: Finished difference. Result has 505 places, 718 transitions, 8805 flow [2024-06-20 16:28:12,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8314, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8805, PETRI_PLACES=505, PETRI_TRANSITIONS=718} [2024-06-20 16:28:12,200 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 462 predicate places. [2024-06-20 16:28:12,200 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 718 transitions, 8805 flow [2024-06-20 16:28:12,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:28:12,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:28:12,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:28:12,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-20 16:28:12,201 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:28:12,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:28:12,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1733091194, now seen corresponding path program 3 times [2024-06-20 16:28:12,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:28:12,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663337021] [2024-06-20 16:28:12,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:28:12,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:28:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:28:13,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:28:13,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:28:13,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663337021] [2024-06-20 16:28:13,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663337021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:28:13,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:28:13,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:28:13,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973289394] [2024-06-20 16:28:13,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:28:13,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:28:13,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:28:13,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:28:13,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:28:13,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-20 16:28:13,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 718 transitions, 8805 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:28:13,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:28:13,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-20 16:28:13,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:28:15,747 INFO L124 PetriNetUnfolderBase]: 4220/6655 cut-off events. [2024-06-20 16:28:15,747 INFO L125 PetriNetUnfolderBase]: For 2751255/2751263 co-relation queries the response was YES. [2024-06-20 16:28:15,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84715 conditions, 6655 events. 4220/6655 cut-off events. For 2751255/2751263 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 40470 event pairs, 782 based on Foata normal form. 6/6654 useless extension candidates. Maximal degree in co-relation 84476. Up to 6127 conditions per place. [2024-06-20 16:28:15,873 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 624 selfloop transitions, 63 changer transitions 0/744 dead transitions. [2024-06-20 16:28:15,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 744 transitions, 10465 flow [2024-06-20 16:28:15,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:28:15,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:28:15,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-20 16:28:15,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-20 16:28:15,874 INFO L175 Difference]: Start difference. First operand has 505 places, 718 transitions, 8805 flow. Second operand 9 states and 165 transitions. [2024-06-20 16:28:15,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 744 transitions, 10465 flow [2024-06-20 16:28:26,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 744 transitions, 10295 flow, removed 74 selfloop flow, removed 4 redundant places. [2024-06-20 16:28:26,449 INFO L231 Difference]: Finished difference. Result has 510 places, 722 transitions, 8960 flow [2024-06-20 16:28:26,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8643, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8960, PETRI_PLACES=510, PETRI_TRANSITIONS=722} [2024-06-20 16:28:26,450 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 467 predicate places. [2024-06-20 16:28:26,450 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 722 transitions, 8960 flow [2024-06-20 16:28:26,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:28:26,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:28:26,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:28:26,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-20 16:28:26,451 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:28:26,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:28:26,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1917201823, now seen corresponding path program 3 times [2024-06-20 16:28:26,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:28:26,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372621125] [2024-06-20 16:28:26,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:28:26,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:28:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:28:27,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:28:27,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:28:27,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372621125] [2024-06-20 16:28:27,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372621125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:28:27,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:28:27,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:28:27,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790265849] [2024-06-20 16:28:27,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:28:27,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:28:27,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:28:27,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:28:27,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:28:27,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-20 16:28:27,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 722 transitions, 8960 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:28:27,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:28:27,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-20 16:28:27,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:28:29,837 INFO L124 PetriNetUnfolderBase]: 4299/6733 cut-off events. [2024-06-20 16:28:29,837 INFO L125 PetriNetUnfolderBase]: For 2740243/2740245 co-relation queries the response was YES. [2024-06-20 16:28:29,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85224 conditions, 6733 events. 4299/6733 cut-off events. For 2740243/2740245 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 40516 event pairs, 809 based on Foata normal form. 4/6735 useless extension candidates. Maximal degree in co-relation 84983. Up to 6285 conditions per place. [2024-06-20 16:28:29,959 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 655 selfloop transitions, 87 changer transitions 0/746 dead transitions. [2024-06-20 16:28:29,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 746 transitions, 10904 flow [2024-06-20 16:28:29,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:28:29,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:28:29,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-20 16:28:29,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312169312169312 [2024-06-20 16:28:29,960 INFO L175 Difference]: Start difference. First operand has 510 places, 722 transitions, 8960 flow. Second operand 9 states and 163 transitions. [2024-06-20 16:28:29,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 746 transitions, 10904 flow Killed by 15