./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_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/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-05-21_14-57-05.files/protection/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_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-cde23df-m [2024-06-14 13:09:37,786 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 13:09:37,858 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 13:09:37,862 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 13:09:37,863 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 13:09:37,887 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 13:09:37,887 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 13:09:37,887 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 13:09:37,888 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 13:09:37,891 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 13:09:37,891 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 13:09:37,891 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 13:09:37,892 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 13:09:37,893 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 13:09:37,893 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 13:09:37,893 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 13:09:37,893 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 13:09:37,893 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 13:09:37,894 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 13:09:37,894 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 13:09:37,894 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 13:09:37,894 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 13:09:37,894 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 13:09:37,895 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 13:09:37,895 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 13:09:37,895 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 13:09:37,895 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 13:09:37,895 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 13:09:37,896 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 13:09:37,896 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 13:09:37,897 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 13:09:37,897 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 13:09:37,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 13:09:37,897 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 13:09:37,897 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 13:09:37,898 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 13:09:37,898 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 13:09:37,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 13:09:37,898 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 13:09:37,898 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 13:09:37,898 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 13:09:37,898 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 13:09:37,898 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 13:09:37,899 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 13:09:38,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 13:09:38,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 13:09:38,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 13:09:38,174 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 13:09:38,174 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 13:09:38,175 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 13:09:39,143 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 13:09:39,370 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 13:09:39,373 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 13:09:39,384 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8da0516f7/1c03b30361c342728d83c440b6e51b05/FLAGae1e60e1c [2024-06-14 13:09:39,397 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8da0516f7/1c03b30361c342728d83c440b6e51b05 [2024-06-14 13:09:39,399 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 13:09:39,400 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 13:09:39,401 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-14 13:09:39,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 13:09:39,557 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 13:09:39,558 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 13:09:39,558 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 13:09:39,562 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 13:09:39,562 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 01:09:39" (1/2) ... [2024-06-14 13:09:39,563 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b5572e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:09:39, skipping insertion in model container [2024-06-14 13:09:39,563 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 01:09:39" (1/2) ... [2024-06-14 13:09:39,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@518aff92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:09:39, skipping insertion in model container [2024-06-14 13:09:39,565 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:09:39" (2/2) ... [2024-06-14 13:09:39,565 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b5572e0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:09:39, skipping insertion in model container [2024-06-14 13:09:39,565 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:09:39" (2/2) ... [2024-06-14 13:09:39,565 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 13:09:39,690 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 13:09:39,691 INFO L97 edCorrectnessWitness]: Location invariant before [L836-L836] (((((((((((((((((! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1))) [2024-06-14 13:09:39,691 INFO L97 edCorrectnessWitness]: Location invariant before [L837-L837] (((((((((((((((((! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1))) [2024-06-14 13:09:39,691 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] (((((((((((((((((! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1))) [2024-06-14 13:09:39,692 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 13:09:39,692 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-14 13:09:39,731 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 13:09:40,014 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 13:09:40,022 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 13:09:40,147 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 13:09:40,175 INFO L206 MainTranslator]: Completed translation [2024-06-14 13:09:40,175 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:09:40 WrapperNode [2024-06-14 13:09:40,176 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 13:09:40,177 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 13:09:40,178 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 13:09:40,178 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 13:09:40,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:09:40" (1/1) ... [2024-06-14 13:09:40,210 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:09:40" (1/1) ... [2024-06-14 13:09:40,242 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 125 [2024-06-14 13:09:40,245 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 13:09:40,246 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 13:09:40,246 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 13:09:40,246 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 13:09:40,254 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:09:40" (1/1) ... [2024-06-14 13:09:40,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:09:40" (1/1) ... [2024-06-14 13:09:40,269 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:09:40" (1/1) ... [2024-06-14 13:09:40,285 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]. [2024-06-14 13:09:40,290 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:09:40" (1/1) ... [2024-06-14 13:09:40,290 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:09:40" (1/1) ... [2024-06-14 13:09:40,299 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:09:40" (1/1) ... [2024-06-14 13:09:40,303 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:09:40" (1/1) ... [2024-06-14 13:09:40,309 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:09:40" (1/1) ... [2024-06-14 13:09:40,311 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:09:40" (1/1) ... [2024-06-14 13:09:40,314 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 13:09:40,317 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 13:09:40,317 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 13:09:40,317 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 13:09:40,318 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:09:40" (1/1) ... [2024-06-14 13:09:40,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 13:09:40,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 13:09:40,370 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) [2024-06-14 13:09:40,382 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 [2024-06-14 13:09:40,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 13:09:40,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 13:09:40,406 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 13:09:40,406 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 13:09:40,406 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 13:09:40,406 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 13:09:40,406 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-14 13:09:40,406 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-14 13:09:40,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 13:09:40,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 13:09:40,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 13:09:40,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 13:09:40,408 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 13:09:40,539 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 13:09:40,542 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 13:09:40,835 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 13:09:40,835 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 13:09:41,011 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 13:09:41,011 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 13:09:41,011 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 01:09:41 BoogieIcfgContainer [2024-06-14 13:09:41,011 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 13:09:41,013 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 13:09:41,013 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 13:09:41,015 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 13:09:41,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 01:09:39" (1/4) ... [2024-06-14 13:09:41,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41fd78bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 01:09:41, skipping insertion in model container [2024-06-14 13:09:41,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:09:39" (2/4) ... [2024-06-14 13:09:41,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41fd78bb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 01:09:41, skipping insertion in model container [2024-06-14 13:09:41,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:09:40" (3/4) ... [2024-06-14 13:09:41,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41fd78bb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 01:09:41, skipping insertion in model container [2024-06-14 13:09:41,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 01:09:41" (4/4) ... [2024-06-14 13:09:41,018 INFO L112 eAbstractionObserver]: Analyzing ICFG safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 13:09:41,031 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 13:09:41,033 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-14 13:09:41,033 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 13:09:41,094 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 13:09:41,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 42 transitions, 96 flow [2024-06-14 13:09:41,156 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2024-06-14 13:09:41,156 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 13:09:41,158 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 5. Compared 68 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. [2024-06-14 13:09:41,158 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 42 transitions, 96 flow [2024-06-14 13:09:41,161 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2024-06-14 13:09:41,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 13:09:41,181 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;@397eb5e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 13:09:41,181 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-14 13:09:41,187 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 13:09:41,187 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 13:09:41,188 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 13:09:41,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:09:41,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 13:09:41,189 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)] === [2024-06-14 13:09:41,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:09:41,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1642982905, now seen corresponding path program 1 times [2024-06-14 13:09:41,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:09:41,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983564473] [2024-06-14 13:09:41,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:09:41,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:09:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:09:42,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:09:42,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:09:42,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983564473] [2024-06-14 13:09:42,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983564473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:09:42,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:09:42,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 13:09:42,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821163779] [2024-06-14 13:09:42,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:09:42,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 13:09:42,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:09:42,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 13:09:42,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 13:09:42,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-14 13:09:42,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:42,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:09:42,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-14 13:09:42,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:09:42,469 INFO L124 PetriNetUnfolderBase]: 1152/1762 cut-off events. [2024-06-14 13:09:42,469 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-06-14 13:09:42,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3581 conditions, 1762 events. 1152/1762 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8442 event pairs, 785 based on Foata normal form. 1/1726 useless extension candidates. Maximal degree in co-relation 3566. Up to 1732 conditions per place. [2024-06-14 13:09:42,483 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 33 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-06-14 13:09:42,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 175 flow [2024-06-14 13:09:42,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 13:09:42,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 13:09:42,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-06-14 13:09:42,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2024-06-14 13:09:42,494 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 3 states and 76 transitions. [2024-06-14 13:09:42,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 175 flow [2024-06-14 13:09:42,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 43 transitions, 170 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-14 13:09:42,499 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 102 flow [2024-06-14 13:09:42,500 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} [2024-06-14 13:09:42,503 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-06-14 13:09:42,503 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 102 flow [2024-06-14 13:09:42,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:42,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:09:42,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:09:42,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 13:09:42,504 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)] === [2024-06-14 13:09:42,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:09:42,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1641423846, now seen corresponding path program 1 times [2024-06-14 13:09:42,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:09:42,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783449] [2024-06-14 13:09:42,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:09:42,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:09:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:09:43,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:09:43,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:09:43,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783449] [2024-06-14 13:09:43,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:09:43,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:09:43,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 13:09:43,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511674037] [2024-06-14 13:09:43,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:09:43,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 13:09:43,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:09:43,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 13:09:43,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 13:09:43,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-14 13:09:43,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:43,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:09:43,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-14 13:09:43,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:09:43,316 INFO L124 PetriNetUnfolderBase]: 1168/1796 cut-off events. [2024-06-14 13:09:43,316 INFO L125 PetriNetUnfolderBase]: For 366/374 co-relation queries the response was YES. [2024-06-14 13:09:43,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4131 conditions, 1796 events. 1168/1796 cut-off events. For 366/374 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8652 event pairs, 595 based on Foata normal form. 13/1807 useless extension candidates. Maximal degree in co-relation 4116. Up to 1669 conditions per place. [2024-06-14 13:09:43,325 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 46 selfloop transitions, 11 changer transitions 0/63 dead transitions. [2024-06-14 13:09:43,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 63 transitions, 288 flow [2024-06-14 13:09:43,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 13:09:43,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 13:09:43,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-06-14 13:09:43,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2024-06-14 13:09:43,329 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 102 flow. Second operand 4 states and 106 transitions. [2024-06-14 13:09:43,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 63 transitions, 288 flow [2024-06-14 13:09:43,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 63 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 13:09:43,333 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 174 flow [2024-06-14 13:09:43,333 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=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2024-06-14 13:09:43,333 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-06-14 13:09:43,333 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 174 flow [2024-06-14 13:09:43,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:43,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:09:43,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:09:43,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 13:09:43,336 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:09:43,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:09:43,337 INFO L85 PathProgramCache]: Analyzing trace with hash 928727222, now seen corresponding path program 1 times [2024-06-14 13:09:43,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:09:43,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804642443] [2024-06-14 13:09:43,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:09:43,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:09:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:09:44,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:09:44,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:09:44,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804642443] [2024-06-14 13:09:44,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804642443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:09:44,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:09:44,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 13:09:44,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087560649] [2024-06-14 13:09:44,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:09:44,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 13:09:44,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:09:44,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 13:09:44,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 13:09:44,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:09:44,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 174 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:44,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:09:44,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:09:44,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:09:44,432 INFO L124 PetriNetUnfolderBase]: 1163/1789 cut-off events. [2024-06-14 13:09:44,432 INFO L125 PetriNetUnfolderBase]: For 1184/1202 co-relation queries the response was YES. [2024-06-14 13:09:44,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4887 conditions, 1789 events. 1163/1789 cut-off events. For 1184/1202 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8575 event pairs, 690 based on Foata normal form. 8/1795 useless extension candidates. Maximal degree in co-relation 4869. Up to 1738 conditions per place. [2024-06-14 13:09:44,440 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 44 selfloop transitions, 8 changer transitions 0/58 dead transitions. [2024-06-14 13:09:44,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 58 transitions, 320 flow [2024-06-14 13:09:44,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:09:44,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:09:44,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2024-06-14 13:09:44,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48095238095238096 [2024-06-14 13:09:44,442 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 174 flow. Second operand 5 states and 101 transitions. [2024-06-14 13:09:44,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 58 transitions, 320 flow [2024-06-14 13:09:44,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 316 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-14 13:09:44,445 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 214 flow [2024-06-14 13:09:44,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2024-06-14 13:09:44,445 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2024-06-14 13:09:44,445 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 214 flow [2024-06-14 13:09:44,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:44,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:09:44,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:09:44,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 13:09:44,446 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:09:44,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:09:44,446 INFO L85 PathProgramCache]: Analyzing trace with hash -2104202332, now seen corresponding path program 1 times [2024-06-14 13:09:44,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:09:44,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217215550] [2024-06-14 13:09:44,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:09:44,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:09:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:09:45,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:09:45,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:09:45,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217215550] [2024-06-14 13:09:45,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217215550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:09:45,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:09:45,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 13:09:45,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627953686] [2024-06-14 13:09:45,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:09:45,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 13:09:45,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:09:45,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 13:09:45,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-14 13:09:45,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-14 13:09:45,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 214 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) [2024-06-14 13:09:45,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:09:45,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-14 13:09:45,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:09:45,763 INFO L124 PetriNetUnfolderBase]: 1203/1853 cut-off events. [2024-06-14 13:09:45,763 INFO L125 PetriNetUnfolderBase]: For 2088/2112 co-relation queries the response was YES. [2024-06-14 13:09:45,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5506 conditions, 1853 events. 1203/1853 cut-off events. For 2088/2112 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8960 event pairs, 389 based on Foata normal form. 25/1876 useless extension candidates. Maximal degree in co-relation 5484. Up to 1638 conditions per place. [2024-06-14 13:09:45,772 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 64 selfloop transitions, 17 changer transitions 0/87 dead transitions. [2024-06-14 13:09:45,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 87 transitions, 496 flow [2024-06-14 13:09:45,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:09:45,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:09:45,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-14 13:09:45,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5992063492063492 [2024-06-14 13:09:45,774 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 214 flow. Second operand 6 states and 151 transitions. [2024-06-14 13:09:45,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 87 transitions, 496 flow [2024-06-14 13:09:45,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 87 transitions, 476 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-14 13:09:45,777 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 274 flow [2024-06-14 13:09:45,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2024-06-14 13:09:45,778 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2024-06-14 13:09:45,778 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 274 flow [2024-06-14 13:09:45,778 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) [2024-06-14 13:09:45,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:09:45,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:09:45,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 13:09:45,779 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)] === [2024-06-14 13:09:45,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:09:45,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1239370335, now seen corresponding path program 1 times [2024-06-14 13:09:45,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:09:45,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595005605] [2024-06-14 13:09:45,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:09:45,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:09:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:09:46,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:09:46,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:09:46,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595005605] [2024-06-14 13:09:46,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595005605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:09:46,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:09:46,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:09:46,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105102127] [2024-06-14 13:09:46,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:09:46,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:09:46,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:09:46,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:09:46,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:09:46,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:09:46,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 274 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-14 13:09:46,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:09:46,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:09:46,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:09:46,766 INFO L124 PetriNetUnfolderBase]: 1388/2115 cut-off events. [2024-06-14 13:09:46,766 INFO L125 PetriNetUnfolderBase]: For 3550/3550 co-relation queries the response was YES. [2024-06-14 13:09:46,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6841 conditions, 2115 events. 1388/2115 cut-off events. For 3550/3550 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10278 event pairs, 597 based on Foata normal form. 2/2116 useless extension candidates. Maximal degree in co-relation 6818. Up to 2060 conditions per place. [2024-06-14 13:09:46,775 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 60 selfloop transitions, 11 changer transitions 0/76 dead transitions. [2024-06-14 13:09:46,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 76 transitions, 500 flow [2024-06-14 13:09:46,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:09:46,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:09:46,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-14 13:09:46,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44841269841269843 [2024-06-14 13:09:46,777 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 274 flow. Second operand 6 states and 113 transitions. [2024-06-14 13:09:46,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 76 transitions, 500 flow [2024-06-14 13:09:46,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 76 transitions, 460 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-14 13:09:46,780 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 332 flow [2024-06-14 13:09:46,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=332, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2024-06-14 13:09:46,781 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 17 predicate places. [2024-06-14 13:09:46,781 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 332 flow [2024-06-14 13:09:46,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-14 13:09:46,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:09:46,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:09:46,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 13:09:46,781 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)] === [2024-06-14 13:09:46,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:09:46,782 INFO L85 PathProgramCache]: Analyzing trace with hash -852968043, now seen corresponding path program 1 times [2024-06-14 13:09:46,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:09:46,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434571524] [2024-06-14 13:09:46,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:09:46,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:09:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:09:47,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:09:47,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:09:47,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434571524] [2024-06-14 13:09:47,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434571524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:09:47,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:09:47,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:09:47,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492233392] [2024-06-14 13:09:47,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:09:47,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:09:47,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:09:47,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:09:47,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:09:47,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:09:47,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 332 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:47,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:09:47,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:09:47,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:09:47,798 INFO L124 PetriNetUnfolderBase]: 1372/2118 cut-off events. [2024-06-14 13:09:47,798 INFO L125 PetriNetUnfolderBase]: For 5013/5045 co-relation queries the response was YES. [2024-06-14 13:09:47,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7280 conditions, 2118 events. 1372/2118 cut-off events. For 5013/5045 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10479 event pairs, 515 based on Foata normal form. 20/2130 useless extension candidates. Maximal degree in co-relation 7253. Up to 1986 conditions per place. [2024-06-14 13:09:47,811 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 66 selfloop transitions, 18 changer transitions 0/93 dead transitions. [2024-06-14 13:09:47,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 93 transitions, 621 flow [2024-06-14 13:09:47,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:09:47,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:09:47,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-14 13:09:47,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-06-14 13:09:47,812 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 332 flow. Second operand 6 states and 128 transitions. [2024-06-14 13:09:47,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 93 transitions, 621 flow [2024-06-14 13:09:47,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 93 transitions, 613 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-14 13:09:47,817 INFO L231 Difference]: Finished difference. Result has 67 places, 72 transitions, 465 flow [2024-06-14 13:09:47,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=465, PETRI_PLACES=67, PETRI_TRANSITIONS=72} [2024-06-14 13:09:47,819 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2024-06-14 13:09:47,819 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 72 transitions, 465 flow [2024-06-14 13:09:47,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:47,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:09:47,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:09:47,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 13:09:47,819 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)] === [2024-06-14 13:09:47,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:09:47,820 INFO L85 PathProgramCache]: Analyzing trace with hash -846301803, now seen corresponding path program 2 times [2024-06-14 13:09:47,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:09:47,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691459633] [2024-06-14 13:09:47,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:09:47,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:09:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:09:48,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:09:48,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:09:48,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691459633] [2024-06-14 13:09:48,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691459633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:09:48,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:09:48,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:09:48,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404430122] [2024-06-14 13:09:48,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:09:48,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:09:48,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:09:48,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:09:48,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:09:48,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:09:48,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 72 transitions, 465 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:48,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:09:48,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:09:48,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:09:48,811 INFO L124 PetriNetUnfolderBase]: 1462/2261 cut-off events. [2024-06-14 13:09:48,812 INFO L125 PetriNetUnfolderBase]: For 7415/7442 co-relation queries the response was YES. [2024-06-14 13:09:48,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8986 conditions, 2261 events. 1462/2261 cut-off events. For 7415/7442 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 11369 event pairs, 520 based on Foata normal form. 17/2267 useless extension candidates. Maximal degree in co-relation 8954. Up to 2014 conditions per place. [2024-06-14 13:09:48,826 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 67 selfloop transitions, 25 changer transitions 0/101 dead transitions. [2024-06-14 13:09:48,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 101 transitions, 797 flow [2024-06-14 13:09:48,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:09:48,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:09:48,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-06-14 13:09:48,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-14 13:09:48,827 INFO L175 Difference]: Start difference. First operand has 67 places, 72 transitions, 465 flow. Second operand 6 states and 129 transitions. [2024-06-14 13:09:48,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 101 transitions, 797 flow [2024-06-14 13:09:48,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 101 transitions, 767 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-14 13:09:48,833 INFO L231 Difference]: Finished difference. Result has 72 places, 80 transitions, 580 flow [2024-06-14 13:09:48,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=580, PETRI_PLACES=72, PETRI_TRANSITIONS=80} [2024-06-14 13:09:48,833 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2024-06-14 13:09:48,833 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 80 transitions, 580 flow [2024-06-14 13:09:48,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:48,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:09:48,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:09:48,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 13:09:48,834 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)] === [2024-06-14 13:09:48,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:09:48,834 INFO L85 PathProgramCache]: Analyzing trace with hash 234226695, now seen corresponding path program 1 times [2024-06-14 13:09:48,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:09:48,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687251735] [2024-06-14 13:09:48,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:09:48,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:09:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:09:49,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:09:49,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:09:49,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687251735] [2024-06-14 13:09:49,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687251735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:09:49,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:09:49,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:09:49,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003775838] [2024-06-14 13:09:49,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:09:49,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:09:49,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:09:49,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:09:49,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:09:49,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:09:49,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 80 transitions, 580 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:49,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:09:49,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:09:49,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:09:50,085 INFO L124 PetriNetUnfolderBase]: 1511/2321 cut-off events. [2024-06-14 13:09:50,086 INFO L125 PetriNetUnfolderBase]: For 9557/9557 co-relation queries the response was YES. [2024-06-14 13:09:50,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9804 conditions, 2321 events. 1511/2321 cut-off events. For 9557/9557 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11525 event pairs, 578 based on Foata normal form. 2/2322 useless extension candidates. Maximal degree in co-relation 9769. Up to 2226 conditions per place. [2024-06-14 13:09:50,100 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 83 selfloop transitions, 14 changer transitions 0/102 dead transitions. [2024-06-14 13:09:50,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 102 transitions, 840 flow [2024-06-14 13:09:50,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:09:50,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:09:50,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-14 13:09:50,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421768707482993 [2024-06-14 13:09:50,102 INFO L175 Difference]: Start difference. First operand has 72 places, 80 transitions, 580 flow. Second operand 7 states and 130 transitions. [2024-06-14 13:09:50,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 102 transitions, 840 flow [2024-06-14 13:09:50,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 102 transitions, 801 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-14 13:09:50,109 INFO L231 Difference]: Finished difference. Result has 77 places, 83 transitions, 601 flow [2024-06-14 13:09:50,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=601, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2024-06-14 13:09:50,110 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2024-06-14 13:09:50,110 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions, 601 flow [2024-06-14 13:09:50,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:50,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:09:50,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:09:50,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 13:09:50,110 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)] === [2024-06-14 13:09:50,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:09:50,111 INFO L85 PathProgramCache]: Analyzing trace with hash 233987930, now seen corresponding path program 1 times [2024-06-14 13:09:50,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:09:50,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206483651] [2024-06-14 13:09:50,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:09:50,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:09:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:09:50,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:09:50,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:09:50,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206483651] [2024-06-14 13:09:50,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206483651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:09:50,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:09:50,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:09:50,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104700183] [2024-06-14 13:09:50,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:09:50,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:09:50,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:09:50,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:09:50,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:09:50,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:09:50,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions, 601 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:50,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:09:50,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:09:50,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:09:51,367 INFO L124 PetriNetUnfolderBase]: 1533/2361 cut-off events. [2024-06-14 13:09:51,367 INFO L125 PetriNetUnfolderBase]: For 10850/10850 co-relation queries the response was YES. [2024-06-14 13:09:51,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10317 conditions, 2361 events. 1533/2361 cut-off events. For 10850/10850 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11655 event pairs, 540 based on Foata normal form. 4/2364 useless extension candidates. Maximal degree in co-relation 10280. Up to 2229 conditions per place. [2024-06-14 13:09:51,384 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 97 selfloop transitions, 14 changer transitions 0/116 dead transitions. [2024-06-14 13:09:51,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 116 transitions, 955 flow [2024-06-14 13:09:51,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:09:51,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:09:51,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-14 13:09:51,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2024-06-14 13:09:51,388 INFO L175 Difference]: Start difference. First operand has 77 places, 83 transitions, 601 flow. Second operand 7 states and 135 transitions. [2024-06-14 13:09:51,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 116 transitions, 955 flow [2024-06-14 13:09:51,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 116 transitions, 919 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-14 13:09:51,395 INFO L231 Difference]: Finished difference. Result has 81 places, 92 transitions, 687 flow [2024-06-14 13:09:51,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=687, PETRI_PLACES=81, PETRI_TRANSITIONS=92} [2024-06-14 13:09:51,396 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2024-06-14 13:09:51,396 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 92 transitions, 687 flow [2024-06-14 13:09:51,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:51,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:09:51,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:09:51,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 13:09:51,397 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)] === [2024-06-14 13:09:51,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:09:51,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1328915520, now seen corresponding path program 2 times [2024-06-14 13:09:51,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:09:51,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247415309] [2024-06-14 13:09:51,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:09:51,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:09:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:09:52,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:09:52,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:09:52,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247415309] [2024-06-14 13:09:52,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247415309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:09:52,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:09:52,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:09:52,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535650363] [2024-06-14 13:09:52,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:09:52,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:09:52,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:09:52,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:09:52,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:09:52,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:09:52,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 92 transitions, 687 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:52,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:09:52,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:09:52,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:09:52,712 INFO L124 PetriNetUnfolderBase]: 1571/2416 cut-off events. [2024-06-14 13:09:52,712 INFO L125 PetriNetUnfolderBase]: For 13465/13465 co-relation queries the response was YES. [2024-06-14 13:09:52,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11136 conditions, 2416 events. 1571/2416 cut-off events. For 13465/13465 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11985 event pairs, 539 based on Foata normal form. 4/2418 useless extension candidates. Maximal degree in co-relation 11096. Up to 2201 conditions per place. [2024-06-14 13:09:52,730 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 93 selfloop transitions, 29 changer transitions 0/127 dead transitions. [2024-06-14 13:09:52,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 127 transitions, 1133 flow [2024-06-14 13:09:52,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:09:52,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:09:52,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-14 13:09:52,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-14 13:09:52,732 INFO L175 Difference]: Start difference. First operand has 81 places, 92 transitions, 687 flow. Second operand 8 states and 150 transitions. [2024-06-14 13:09:52,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 127 transitions, 1133 flow [2024-06-14 13:09:52,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 127 transitions, 1106 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-14 13:09:52,741 INFO L231 Difference]: Finished difference. Result has 89 places, 103 transitions, 831 flow [2024-06-14 13:09:52,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=831, PETRI_PLACES=89, PETRI_TRANSITIONS=103} [2024-06-14 13:09:52,743 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 46 predicate places. [2024-06-14 13:09:52,744 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 103 transitions, 831 flow [2024-06-14 13:09:52,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:52,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:09:52,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:09:52,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 13:09:52,745 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)] === [2024-06-14 13:09:52,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:09:52,746 INFO L85 PathProgramCache]: Analyzing trace with hash -465550732, now seen corresponding path program 3 times [2024-06-14 13:09:52,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:09:52,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629971763] [2024-06-14 13:09:52,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:09:52,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:09:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:09:53,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:09:53,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:09:53,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629971763] [2024-06-14 13:09:53,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629971763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:09:53,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:09:53,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:09:53,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533181031] [2024-06-14 13:09:53,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:09:53,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:09:53,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:09:53,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:09:53,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:09:53,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:09:53,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 103 transitions, 831 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:53,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:09:53,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:09:53,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:09:53,849 INFO L124 PetriNetUnfolderBase]: 1561/2402 cut-off events. [2024-06-14 13:09:53,849 INFO L125 PetriNetUnfolderBase]: For 16027/16027 co-relation queries the response was YES. [2024-06-14 13:09:53,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11709 conditions, 2402 events. 1561/2402 cut-off events. For 16027/16027 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11936 event pairs, 550 based on Foata normal form. 4/2404 useless extension candidates. Maximal degree in co-relation 11665. Up to 2193 conditions per place. [2024-06-14 13:09:53,867 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 92 selfloop transitions, 27 changer transitions 0/124 dead transitions. [2024-06-14 13:09:53,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 124 transitions, 1133 flow [2024-06-14 13:09:53,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:09:53,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:09:53,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-14 13:09:53,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46598639455782315 [2024-06-14 13:09:53,869 INFO L175 Difference]: Start difference. First operand has 89 places, 103 transitions, 831 flow. Second operand 7 states and 137 transitions. [2024-06-14 13:09:53,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 124 transitions, 1133 flow [2024-06-14 13:09:53,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 124 transitions, 1099 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-14 13:09:53,882 INFO L231 Difference]: Finished difference. Result has 95 places, 103 transitions, 859 flow [2024-06-14 13:09:53,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=859, PETRI_PLACES=95, PETRI_TRANSITIONS=103} [2024-06-14 13:09:53,882 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 52 predicate places. [2024-06-14 13:09:53,882 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 103 transitions, 859 flow [2024-06-14 13:09:53,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:53,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:09:53,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:09:53,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 13:09:53,883 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:09:53,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:09:53,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1328905600, now seen corresponding path program 1 times [2024-06-14 13:09:53,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:09:53,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239743476] [2024-06-14 13:09:53,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:09:53,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:09:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:09:54,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:09:54,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:09:54,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239743476] [2024-06-14 13:09:54,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239743476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:09:54,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:09:54,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:09:54,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176663769] [2024-06-14 13:09:54,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:09:54,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:09:54,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:09:54,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:09:54,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:09:55,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:09:55,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 103 transitions, 859 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:55,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:09:55,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:09:55,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:09:55,558 INFO L124 PetriNetUnfolderBase]: 1553/2395 cut-off events. [2024-06-14 13:09:55,558 INFO L125 PetriNetUnfolderBase]: For 17563/17563 co-relation queries the response was YES. [2024-06-14 13:09:55,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11746 conditions, 2395 events. 1553/2395 cut-off events. For 17563/17563 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11925 event pairs, 576 based on Foata normal form. 4/2398 useless extension candidates. Maximal degree in co-relation 11699. Up to 2269 conditions per place. [2024-06-14 13:09:55,573 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 107 selfloop transitions, 18 changer transitions 0/130 dead transitions. [2024-06-14 13:09:55,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 130 transitions, 1210 flow [2024-06-14 13:09:55,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:09:55,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:09:55,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-14 13:09:55,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41798941798941797 [2024-06-14 13:09:55,575 INFO L175 Difference]: Start difference. First operand has 95 places, 103 transitions, 859 flow. Second operand 9 states and 158 transitions. [2024-06-14 13:09:55,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 130 transitions, 1210 flow [2024-06-14 13:09:55,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 130 transitions, 1122 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 13:09:55,588 INFO L231 Difference]: Finished difference. Result has 98 places, 107 transitions, 866 flow [2024-06-14 13:09:55,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=866, PETRI_PLACES=98, PETRI_TRANSITIONS=107} [2024-06-14 13:09:55,588 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2024-06-14 13:09:55,588 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 107 transitions, 866 flow [2024-06-14 13:09:55,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:55,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:09:55,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:09:55,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 13:09:55,589 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)] === [2024-06-14 13:09:55,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:09:55,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1775255112, now seen corresponding path program 1 times [2024-06-14 13:09:55,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:09:55,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709391712] [2024-06-14 13:09:55,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:09:55,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:09:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:09:56,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:09:56,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:09:56,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709391712] [2024-06-14 13:09:56,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709391712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:09:56,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:09:56,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:09:56,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968808464] [2024-06-14 13:09:56,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:09:56,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:09:56,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:09:56,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:09:56,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:09:56,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:09:56,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 107 transitions, 866 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:56,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:09:56,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:09:56,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:09:57,176 INFO L124 PetriNetUnfolderBase]: 1496/2330 cut-off events. [2024-06-14 13:09:57,176 INFO L125 PetriNetUnfolderBase]: For 21378/21408 co-relation queries the response was YES. [2024-06-14 13:09:57,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11718 conditions, 2330 events. 1496/2330 cut-off events. For 21378/21408 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 11907 event pairs, 541 based on Foata normal form. 23/2304 useless extension candidates. Maximal degree in co-relation 11671. Up to 2072 conditions per place. [2024-06-14 13:09:57,190 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 92 selfloop transitions, 30 changer transitions 0/139 dead transitions. [2024-06-14 13:09:57,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 139 transitions, 1264 flow [2024-06-14 13:09:57,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:09:57,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:09:57,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-14 13:09:57,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2024-06-14 13:09:57,192 INFO L175 Difference]: Start difference. First operand has 98 places, 107 transitions, 866 flow. Second operand 7 states and 153 transitions. [2024-06-14 13:09:57,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 139 transitions, 1264 flow [2024-06-14 13:09:57,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 139 transitions, 1217 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 13:09:57,204 INFO L231 Difference]: Finished difference. Result has 99 places, 111 transitions, 938 flow [2024-06-14 13:09:57,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=938, PETRI_PLACES=99, PETRI_TRANSITIONS=111} [2024-06-14 13:09:57,205 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 56 predicate places. [2024-06-14 13:09:57,205 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 111 transitions, 938 flow [2024-06-14 13:09:57,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:57,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:09:57,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:09:57,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 13:09:57,206 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)] === [2024-06-14 13:09:57,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:09:57,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1517117896, now seen corresponding path program 1 times [2024-06-14 13:09:57,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:09:57,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963318273] [2024-06-14 13:09:57,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:09:57,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:09:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:09:58,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:09:58,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:09:58,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963318273] [2024-06-14 13:09:58,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963318273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:09:58,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:09:58,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:09:58,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133905853] [2024-06-14 13:09:58,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:09:58,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:09:58,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:09:58,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:09:58,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:09:58,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:09:58,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 111 transitions, 938 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:58,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:09:58,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:09:58,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:09:58,829 INFO L124 PetriNetUnfolderBase]: 1576/2423 cut-off events. [2024-06-14 13:09:58,830 INFO L125 PetriNetUnfolderBase]: For 22785/22785 co-relation queries the response was YES. [2024-06-14 13:09:58,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12555 conditions, 2423 events. 1576/2423 cut-off events. For 22785/22785 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11908 event pairs, 465 based on Foata normal form. 6/2428 useless extension candidates. Maximal degree in co-relation 12507. Up to 2264 conditions per place. [2024-06-14 13:09:58,844 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 123 selfloop transitions, 27 changer transitions 0/155 dead transitions. [2024-06-14 13:09:58,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 155 transitions, 1467 flow [2024-06-14 13:09:58,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:09:58,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:09:58,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-14 13:09:58,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-14 13:09:58,846 INFO L175 Difference]: Start difference. First operand has 99 places, 111 transitions, 938 flow. Second operand 8 states and 156 transitions. [2024-06-14 13:09:58,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 155 transitions, 1467 flow [2024-06-14 13:09:58,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 155 transitions, 1361 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-14 13:09:58,859 INFO L231 Difference]: Finished difference. Result has 105 places, 130 transitions, 1112 flow [2024-06-14 13:09:58,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1112, PETRI_PLACES=105, PETRI_TRANSITIONS=130} [2024-06-14 13:09:58,860 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 62 predicate places. [2024-06-14 13:09:58,860 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 130 transitions, 1112 flow [2024-06-14 13:09:58,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:58,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:09:58,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:09:58,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 13:09:58,861 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)] === [2024-06-14 13:09:58,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:09:58,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1753293256, now seen corresponding path program 2 times [2024-06-14 13:09:58,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:09:58,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553289297] [2024-06-14 13:09:58,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:09:58,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:09:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:09:59,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:09:59,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:09:59,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553289297] [2024-06-14 13:09:59,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553289297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:09:59,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:09:59,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:09:59,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403248490] [2024-06-14 13:09:59,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:09:59,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:09:59,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:09:59,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:09:59,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:09:59,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:09:59,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 130 transitions, 1112 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:09:59,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:09:59,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:09:59,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:00,210 INFO L124 PetriNetUnfolderBase]: 1587/2445 cut-off events. [2024-06-14 13:10:00,211 INFO L125 PetriNetUnfolderBase]: For 28536/28536 co-relation queries the response was YES. [2024-06-14 13:10:00,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13468 conditions, 2445 events. 1587/2445 cut-off events. For 28536/28536 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 12122 event pairs, 442 based on Foata normal form. 2/2445 useless extension candidates. Maximal degree in co-relation 13416. Up to 2277 conditions per place. [2024-06-14 13:10:00,229 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 128 selfloop transitions, 31 changer transitions 0/164 dead transitions. [2024-06-14 13:10:00,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 164 transitions, 1572 flow [2024-06-14 13:10:00,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:10:00,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:10:00,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-14 13:10:00,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-14 13:10:00,232 INFO L175 Difference]: Start difference. First operand has 105 places, 130 transitions, 1112 flow. Second operand 8 states and 150 transitions. [2024-06-14 13:10:00,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 164 transitions, 1572 flow [2024-06-14 13:10:00,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 164 transitions, 1511 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-06-14 13:10:00,257 INFO L231 Difference]: Finished difference. Result has 114 places, 142 transitions, 1251 flow [2024-06-14 13:10:00,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1251, PETRI_PLACES=114, PETRI_TRANSITIONS=142} [2024-06-14 13:10:00,258 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 71 predicate places. [2024-06-14 13:10:00,258 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 142 transitions, 1251 flow [2024-06-14 13:10:00,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:00,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:00,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:00,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 13:10:00,259 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)] === [2024-06-14 13:10:00,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:00,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1538598508, now seen corresponding path program 3 times [2024-06-14 13:10:00,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:00,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460491231] [2024-06-14 13:10:00,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:00,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:00,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:01,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:01,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:01,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460491231] [2024-06-14 13:10:01,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460491231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:01,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:01,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:10:01,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194715464] [2024-06-14 13:10:01,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:01,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:10:01,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:01,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:10:01,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:10:01,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:01,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 142 transitions, 1251 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:01,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:01,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:01,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:01,561 INFO L124 PetriNetUnfolderBase]: 1598/2461 cut-off events. [2024-06-14 13:10:01,562 INFO L125 PetriNetUnfolderBase]: For 31855/31855 co-relation queries the response was YES. [2024-06-14 13:10:01,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14112 conditions, 2461 events. 1598/2461 cut-off events. For 31855/31855 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 12144 event pairs, 442 based on Foata normal form. 2/2461 useless extension candidates. Maximal degree in co-relation 14055. Up to 2255 conditions per place. [2024-06-14 13:10:01,575 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 127 selfloop transitions, 42 changer transitions 0/174 dead transitions. [2024-06-14 13:10:01,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 174 transitions, 1783 flow [2024-06-14 13:10:01,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:10:01,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:10:01,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-14 13:10:01,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-14 13:10:01,577 INFO L175 Difference]: Start difference. First operand has 114 places, 142 transitions, 1251 flow. Second operand 8 states and 153 transitions. [2024-06-14 13:10:01,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 174 transitions, 1783 flow [2024-06-14 13:10:01,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 174 transitions, 1742 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-14 13:10:01,594 INFO L231 Difference]: Finished difference. Result has 121 places, 150 transitions, 1398 flow [2024-06-14 13:10:01,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1210, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1398, PETRI_PLACES=121, PETRI_TRANSITIONS=150} [2024-06-14 13:10:01,594 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 78 predicate places. [2024-06-14 13:10:01,595 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 150 transitions, 1398 flow [2024-06-14 13:10:01,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:01,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:01,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:01,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 13:10:01,595 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:10:01,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:01,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1745019046, now seen corresponding path program 4 times [2024-06-14 13:10:01,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:01,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267834825] [2024-06-14 13:10:01,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:01,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:02,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:02,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:02,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267834825] [2024-06-14 13:10:02,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267834825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:02,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:02,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:10:02,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418229363] [2024-06-14 13:10:02,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:02,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:10:02,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:02,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:10:02,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:10:02,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:02,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 150 transitions, 1398 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:02,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:02,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:02,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:02,978 INFO L124 PetriNetUnfolderBase]: 1593/2454 cut-off events. [2024-06-14 13:10:02,978 INFO L125 PetriNetUnfolderBase]: For 35222/35222 co-relation queries the response was YES. [2024-06-14 13:10:02,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14640 conditions, 2454 events. 1593/2454 cut-off events. For 35222/35222 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 12095 event pairs, 442 based on Foata normal form. 2/2454 useless extension candidates. Maximal degree in co-relation 14580. Up to 2286 conditions per place. [2024-06-14 13:10:02,995 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 137 selfloop transitions, 30 changer transitions 0/172 dead transitions. [2024-06-14 13:10:02,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 172 transitions, 1788 flow [2024-06-14 13:10:02,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:10:02,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:10:02,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-14 13:10:02,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494047619047619 [2024-06-14 13:10:02,997 INFO L175 Difference]: Start difference. First operand has 121 places, 150 transitions, 1398 flow. Second operand 8 states and 151 transitions. [2024-06-14 13:10:02,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 172 transitions, 1788 flow [2024-06-14 13:10:03,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 172 transitions, 1721 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-14 13:10:03,019 INFO L231 Difference]: Finished difference. Result has 125 places, 150 transitions, 1399 flow [2024-06-14 13:10:03,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1331, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1399, PETRI_PLACES=125, PETRI_TRANSITIONS=150} [2024-06-14 13:10:03,020 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 82 predicate places. [2024-06-14 13:10:03,020 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 150 transitions, 1399 flow [2024-06-14 13:10:03,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:03,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:03,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:03,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 13:10:03,021 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:10:03,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:03,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1474975351, now seen corresponding path program 1 times [2024-06-14 13:10:03,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:03,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904754017] [2024-06-14 13:10:03,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:03,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:03,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:03,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:03,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904754017] [2024-06-14 13:10:03,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904754017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:03,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:03,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:10:03,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449536031] [2024-06-14 13:10:03,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:03,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:10:03,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:03,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:10:03,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:10:03,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:03,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 150 transitions, 1399 flow. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:03,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:03,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:03,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:03,996 INFO L124 PetriNetUnfolderBase]: 1542/2370 cut-off events. [2024-06-14 13:10:03,996 INFO L125 PetriNetUnfolderBase]: For 35921/35921 co-relation queries the response was YES. [2024-06-14 13:10:04,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14268 conditions, 2370 events. 1542/2370 cut-off events. For 35921/35921 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 11680 event pairs, 437 based on Foata normal form. 6/2372 useless extension candidates. Maximal degree in co-relation 14206. Up to 2215 conditions per place. [2024-06-14 13:10:04,015 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 134 selfloop transitions, 22 changer transitions 0/161 dead transitions. [2024-06-14 13:10:04,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 161 transitions, 1755 flow [2024-06-14 13:10:04,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:10:04,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:10:04,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2024-06-14 13:10:04,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-14 13:10:04,018 INFO L175 Difference]: Start difference. First operand has 125 places, 150 transitions, 1399 flow. Second operand 5 states and 100 transitions. [2024-06-14 13:10:04,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 161 transitions, 1755 flow [2024-06-14 13:10:04,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 161 transitions, 1680 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-14 13:10:04,043 INFO L231 Difference]: Finished difference. Result has 126 places, 150 transitions, 1379 flow [2024-06-14 13:10:04,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1324, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1379, PETRI_PLACES=126, PETRI_TRANSITIONS=150} [2024-06-14 13:10:04,044 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 83 predicate places. [2024-06-14 13:10:04,044 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 150 transitions, 1379 flow [2024-06-14 13:10:04,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:04,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:04,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:04,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 13:10:04,045 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)] === [2024-06-14 13:10:04,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:04,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1227077583, now seen corresponding path program 1 times [2024-06-14 13:10:04,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:04,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876212849] [2024-06-14 13:10:04,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:04,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:04,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:04,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:04,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876212849] [2024-06-14 13:10:04,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876212849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:04,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:04,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:10:04,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265697866] [2024-06-14 13:10:04,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:04,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:10:04,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:04,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:10:04,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:10:05,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:05,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 150 transitions, 1379 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:05,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:05,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:05,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:05,540 INFO L124 PetriNetUnfolderBase]: 1645/2556 cut-off events. [2024-06-14 13:10:05,540 INFO L125 PetriNetUnfolderBase]: For 42852/42852 co-relation queries the response was YES. [2024-06-14 13:10:05,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15112 conditions, 2556 events. 1645/2556 cut-off events. For 42852/42852 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 12942 event pairs, 400 based on Foata normal form. 26/2581 useless extension candidates. Maximal degree in co-relation 15050. Up to 2195 conditions per place. [2024-06-14 13:10:05,558 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 146 selfloop transitions, 38 changer transitions 0/189 dead transitions. [2024-06-14 13:10:05,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 189 transitions, 1927 flow [2024-06-14 13:10:05,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:10:05,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:10:05,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-14 13:10:05,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2024-06-14 13:10:05,574 INFO L175 Difference]: Start difference. First operand has 126 places, 150 transitions, 1379 flow. Second operand 9 states and 177 transitions. [2024-06-14 13:10:05,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 189 transitions, 1927 flow [2024-06-14 13:10:05,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 189 transitions, 1870 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 13:10:05,616 INFO L231 Difference]: Finished difference. Result has 132 places, 155 transitions, 1499 flow [2024-06-14 13:10:05,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1499, PETRI_PLACES=132, PETRI_TRANSITIONS=155} [2024-06-14 13:10:05,617 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 89 predicate places. [2024-06-14 13:10:05,617 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 155 transitions, 1499 flow [2024-06-14 13:10:05,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:05,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:05,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:05,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 13:10:05,618 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)] === [2024-06-14 13:10:05,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:05,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1718601321, now seen corresponding path program 2 times [2024-06-14 13:10:05,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:05,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939993965] [2024-06-14 13:10:05,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:05,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:06,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:06,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:06,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939993965] [2024-06-14 13:10:06,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939993965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:06,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:06,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:10:06,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408072991] [2024-06-14 13:10:06,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:06,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:10:06,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:06,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:10:06,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:10:06,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:06,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 155 transitions, 1499 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:06,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:06,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:06,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:07,115 INFO L124 PetriNetUnfolderBase]: 1662/2583 cut-off events. [2024-06-14 13:10:07,116 INFO L125 PetriNetUnfolderBase]: For 47188/47188 co-relation queries the response was YES. [2024-06-14 13:10:07,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16114 conditions, 2583 events. 1662/2583 cut-off events. For 47188/47188 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 13072 event pairs, 390 based on Foata normal form. 4/2585 useless extension candidates. Maximal degree in co-relation 16051. Up to 2386 conditions per place. [2024-06-14 13:10:07,139 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 147 selfloop transitions, 32 changer transitions 0/184 dead transitions. [2024-06-14 13:10:07,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 184 transitions, 1953 flow [2024-06-14 13:10:07,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:10:07,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:10:07,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-14 13:10:07,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 13:10:07,140 INFO L175 Difference]: Start difference. First operand has 132 places, 155 transitions, 1499 flow. Second operand 9 states and 168 transitions. [2024-06-14 13:10:07,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 184 transitions, 1953 flow [2024-06-14 13:10:07,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 184 transitions, 1882 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-14 13:10:07,181 INFO L231 Difference]: Finished difference. Result has 136 places, 157 transitions, 1531 flow [2024-06-14 13:10:07,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1428, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1531, PETRI_PLACES=136, PETRI_TRANSITIONS=157} [2024-06-14 13:10:07,182 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 93 predicate places. [2024-06-14 13:10:07,182 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 157 transitions, 1531 flow [2024-06-14 13:10:07,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:07,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:07,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:07,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 13:10:07,184 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)] === [2024-06-14 13:10:07,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:07,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1482482465, now seen corresponding path program 3 times [2024-06-14 13:10:07,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:07,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976888841] [2024-06-14 13:10:07,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:07,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:08,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:08,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:08,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976888841] [2024-06-14 13:10:08,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976888841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:08,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:08,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:10:08,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095929803] [2024-06-14 13:10:08,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:08,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:10:08,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:08,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:10:08,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:10:08,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:08,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 157 transitions, 1531 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:08,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:08,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:08,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:08,956 INFO L124 PetriNetUnfolderBase]: 1679/2620 cut-off events. [2024-06-14 13:10:08,956 INFO L125 PetriNetUnfolderBase]: For 47720/47720 co-relation queries the response was YES. [2024-06-14 13:10:08,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16341 conditions, 2620 events. 1679/2620 cut-off events. For 47720/47720 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 13353 event pairs, 464 based on Foata normal form. 4/2622 useless extension candidates. Maximal degree in co-relation 16276. Up to 2372 conditions per place. [2024-06-14 13:10:08,976 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 136 selfloop transitions, 41 changer transitions 0/182 dead transitions. [2024-06-14 13:10:08,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 182 transitions, 1975 flow [2024-06-14 13:10:08,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:10:08,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:10:08,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-14 13:10:08,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-14 13:10:08,978 INFO L175 Difference]: Start difference. First operand has 136 places, 157 transitions, 1531 flow. Second operand 8 states and 152 transitions. [2024-06-14 13:10:08,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 182 transitions, 1975 flow [2024-06-14 13:10:09,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 182 transitions, 1890 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 13:10:09,013 INFO L231 Difference]: Finished difference. Result has 137 places, 159 transitions, 1572 flow [2024-06-14 13:10:09,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1572, PETRI_PLACES=137, PETRI_TRANSITIONS=159} [2024-06-14 13:10:09,013 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 94 predicate places. [2024-06-14 13:10:09,013 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 159 transitions, 1572 flow [2024-06-14 13:10:09,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:09,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:09,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:09,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 13:10:09,014 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)] === [2024-06-14 13:10:09,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:09,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1472959265, now seen corresponding path program 4 times [2024-06-14 13:10:09,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:09,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370516448] [2024-06-14 13:10:09,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:09,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:09,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:09,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:09,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370516448] [2024-06-14 13:10:09,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370516448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:09,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:09,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:10:09,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075064068] [2024-06-14 13:10:09,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:09,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:10:09,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:09,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:10:09,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:10:10,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:10,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 159 transitions, 1572 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:10,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:10,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:10,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:10,505 INFO L124 PetriNetUnfolderBase]: 1671/2610 cut-off events. [2024-06-14 13:10:10,506 INFO L125 PetriNetUnfolderBase]: For 50889/50889 co-relation queries the response was YES. [2024-06-14 13:10:10,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16492 conditions, 2610 events. 1671/2610 cut-off events. For 50889/50889 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 13299 event pairs, 349 based on Foata normal form. 4/2612 useless extension candidates. Maximal degree in co-relation 16426. Up to 2283 conditions per place. [2024-06-14 13:10:10,527 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 134 selfloop transitions, 51 changer transitions 0/190 dead transitions. [2024-06-14 13:10:10,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 190 transitions, 2063 flow [2024-06-14 13:10:10,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:10:10,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:10:10,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-14 13:10:10,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-14 13:10:10,529 INFO L175 Difference]: Start difference. First operand has 137 places, 159 transitions, 1572 flow. Second operand 9 states and 169 transitions. [2024-06-14 13:10:10,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 190 transitions, 2063 flow [2024-06-14 13:10:10,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 190 transitions, 1975 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-14 13:10:10,571 INFO L231 Difference]: Finished difference. Result has 142 places, 162 transitions, 1663 flow [2024-06-14 13:10:10,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1484, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1663, PETRI_PLACES=142, PETRI_TRANSITIONS=162} [2024-06-14 13:10:10,571 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 99 predicate places. [2024-06-14 13:10:10,571 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 162 transitions, 1663 flow [2024-06-14 13:10:10,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:10,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:10,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:10,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 13:10:10,572 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)] === [2024-06-14 13:10:10,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:10,572 INFO L85 PathProgramCache]: Analyzing trace with hash 608621941, now seen corresponding path program 1 times [2024-06-14 13:10:10,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:10,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567058436] [2024-06-14 13:10:10,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:10,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:11,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:11,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:11,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567058436] [2024-06-14 13:10:11,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567058436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:11,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:11,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:10:11,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098973300] [2024-06-14 13:10:11,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:11,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:10:11,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:11,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:10:11,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:10:11,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:10:11,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 162 transitions, 1663 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:11,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:11,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:10:11,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:12,164 INFO L124 PetriNetUnfolderBase]: 1682/2654 cut-off events. [2024-06-14 13:10:12,165 INFO L125 PetriNetUnfolderBase]: For 62989/63048 co-relation queries the response was YES. [2024-06-14 13:10:12,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17219 conditions, 2654 events. 1682/2654 cut-off events. For 62989/63048 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 13888 event pairs, 433 based on Foata normal form. 17/2628 useless extension candidates. Maximal degree in co-relation 17151. Up to 2324 conditions per place. [2024-06-14 13:10:12,186 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 131 selfloop transitions, 32 changer transitions 0/199 dead transitions. [2024-06-14 13:10:12,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 199 transitions, 2165 flow [2024-06-14 13:10:12,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:10:12,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:10:12,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-14 13:10:12,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-14 13:10:12,189 INFO L175 Difference]: Start difference. First operand has 142 places, 162 transitions, 1663 flow. Second operand 8 states and 168 transitions. [2024-06-14 13:10:12,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 199 transitions, 2165 flow [2024-06-14 13:10:12,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 199 transitions, 2033 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-14 13:10:12,235 INFO L231 Difference]: Finished difference. Result has 145 places, 168 transitions, 1682 flow [2024-06-14 13:10:12,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1531, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1682, PETRI_PLACES=145, PETRI_TRANSITIONS=168} [2024-06-14 13:10:12,236 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 102 predicate places. [2024-06-14 13:10:12,236 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 168 transitions, 1682 flow [2024-06-14 13:10:12,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:12,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:12,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:12,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 13:10:12,237 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)] === [2024-06-14 13:10:12,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:12,237 INFO L85 PathProgramCache]: Analyzing trace with hash -286559059, now seen corresponding path program 2 times [2024-06-14 13:10:12,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:12,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770733199] [2024-06-14 13:10:12,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:12,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:13,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:13,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:13,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770733199] [2024-06-14 13:10:13,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770733199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:13,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:13,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:10:13,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627604164] [2024-06-14 13:10:13,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:13,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:10:13,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:13,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:10:13,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:10:13,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:10:13,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 168 transitions, 1682 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:13,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:13,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:10:13,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:13,830 INFO L124 PetriNetUnfolderBase]: 1739/2753 cut-off events. [2024-06-14 13:10:13,830 INFO L125 PetriNetUnfolderBase]: For 67722/67799 co-relation queries the response was YES. [2024-06-14 13:10:13,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17848 conditions, 2753 events. 1739/2753 cut-off events. For 67722/67799 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 14508 event pairs, 374 based on Foata normal form. 20/2733 useless extension candidates. Maximal degree in co-relation 17778. Up to 2318 conditions per place. [2024-06-14 13:10:13,923 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 142 selfloop transitions, 33 changer transitions 0/211 dead transitions. [2024-06-14 13:10:13,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 211 transitions, 2248 flow [2024-06-14 13:10:13,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:10:13,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:10:13,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-14 13:10:13,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-14 13:10:13,924 INFO L175 Difference]: Start difference. First operand has 145 places, 168 transitions, 1682 flow. Second operand 8 states and 176 transitions. [2024-06-14 13:10:13,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 211 transitions, 2248 flow [2024-06-14 13:10:13,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 211 transitions, 2171 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-14 13:10:13,964 INFO L231 Difference]: Finished difference. Result has 149 places, 172 transitions, 1734 flow [2024-06-14 13:10:13,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1605, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1734, PETRI_PLACES=149, PETRI_TRANSITIONS=172} [2024-06-14 13:10:13,965 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 106 predicate places. [2024-06-14 13:10:13,965 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 172 transitions, 1734 flow [2024-06-14 13:10:13,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:13,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:13,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:13,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 13:10:13,966 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:10:13,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:13,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1509013365, now seen corresponding path program 3 times [2024-06-14 13:10:13,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:13,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584174203] [2024-06-14 13:10:13,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:13,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:14,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:14,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:14,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584174203] [2024-06-14 13:10:14,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584174203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:14,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:14,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:10:14,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575131101] [2024-06-14 13:10:14,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:14,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:10:14,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:14,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:10:14,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:10:14,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:10:14,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 172 transitions, 1734 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:14,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:14,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:10:14,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:15,614 INFO L124 PetriNetUnfolderBase]: 1805/2848 cut-off events. [2024-06-14 13:10:15,614 INFO L125 PetriNetUnfolderBase]: For 75648/75709 co-relation queries the response was YES. [2024-06-14 13:10:15,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18920 conditions, 2848 events. 1805/2848 cut-off events. For 75648/75709 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 15045 event pairs, 396 based on Foata normal form. 18/2819 useless extension candidates. Maximal degree in co-relation 18848. Up to 2505 conditions per place. [2024-06-14 13:10:15,636 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 146 selfloop transitions, 34 changer transitions 0/216 dead transitions. [2024-06-14 13:10:15,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 216 transitions, 2323 flow [2024-06-14 13:10:15,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:10:15,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:10:15,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 171 transitions. [2024-06-14 13:10:15,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2024-06-14 13:10:15,638 INFO L175 Difference]: Start difference. First operand has 149 places, 172 transitions, 1734 flow. Second operand 8 states and 171 transitions. [2024-06-14 13:10:15,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 216 transitions, 2323 flow [2024-06-14 13:10:15,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 216 transitions, 2239 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-14 13:10:15,692 INFO L231 Difference]: Finished difference. Result has 155 places, 183 transitions, 1889 flow [2024-06-14 13:10:15,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1657, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1889, PETRI_PLACES=155, PETRI_TRANSITIONS=183} [2024-06-14 13:10:15,693 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 112 predicate places. [2024-06-14 13:10:15,694 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 183 transitions, 1889 flow [2024-06-14 13:10:15,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:15,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:15,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:15,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 13:10:15,694 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)] === [2024-06-14 13:10:15,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:15,696 INFO L85 PathProgramCache]: Analyzing trace with hash -168226479, now seen corresponding path program 1 times [2024-06-14 13:10:15,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:15,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763058380] [2024-06-14 13:10:15,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:15,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:16,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:16,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:16,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763058380] [2024-06-14 13:10:16,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763058380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:16,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:16,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:10:16,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045512613] [2024-06-14 13:10:16,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:16,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:10:16,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:16,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:10:16,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:10:17,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:17,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 183 transitions, 1889 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:17,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:17,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:17,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:17,735 INFO L124 PetriNetUnfolderBase]: 1901/2981 cut-off events. [2024-06-14 13:10:17,736 INFO L125 PetriNetUnfolderBase]: For 72030/72030 co-relation queries the response was YES. [2024-06-14 13:10:17,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20047 conditions, 2981 events. 1901/2981 cut-off events. For 72030/72030 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 15582 event pairs, 428 based on Foata normal form. 2/2982 useless extension candidates. Maximal degree in co-relation 19971. Up to 2770 conditions per place. [2024-06-14 13:10:17,761 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 183 selfloop transitions, 33 changer transitions 0/221 dead transitions. [2024-06-14 13:10:17,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 221 transitions, 2477 flow [2024-06-14 13:10:17,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:10:17,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:10:17,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-14 13:10:17,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452380952380952 [2024-06-14 13:10:17,763 INFO L175 Difference]: Start difference. First operand has 155 places, 183 transitions, 1889 flow. Second operand 10 states and 187 transitions. [2024-06-14 13:10:17,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 221 transitions, 2477 flow [2024-06-14 13:10:17,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 221 transitions, 2415 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-14 13:10:17,820 INFO L231 Difference]: Finished difference. Result has 162 places, 189 transitions, 1981 flow [2024-06-14 13:10:17,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1827, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1981, PETRI_PLACES=162, PETRI_TRANSITIONS=189} [2024-06-14 13:10:17,821 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 119 predicate places. [2024-06-14 13:10:17,821 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 189 transitions, 1981 flow [2024-06-14 13:10:17,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:17,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:17,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:17,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 13:10:17,821 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)] === [2024-06-14 13:10:17,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:17,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1919423973, now seen corresponding path program 4 times [2024-06-14 13:10:17,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:17,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591768847] [2024-06-14 13:10:17,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:17,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:18,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:18,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:18,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591768847] [2024-06-14 13:10:18,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591768847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:18,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:18,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:10:18,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114710975] [2024-06-14 13:10:18,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:18,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:10:18,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:18,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:10:18,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:10:18,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:10:18,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 189 transitions, 1981 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:18,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:18,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:10:18,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:19,441 INFO L124 PetriNetUnfolderBase]: 1860/2944 cut-off events. [2024-06-14 13:10:19,441 INFO L125 PetriNetUnfolderBase]: For 85592/85631 co-relation queries the response was YES. [2024-06-14 13:10:19,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20227 conditions, 2944 events. 1860/2944 cut-off events. For 85592/85631 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 15721 event pairs, 439 based on Foata normal form. 18/2913 useless extension candidates. Maximal degree in co-relation 20149. Up to 2483 conditions per place. [2024-06-14 13:10:19,464 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 146 selfloop transitions, 43 changer transitions 0/227 dead transitions. [2024-06-14 13:10:19,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 227 transitions, 2649 flow [2024-06-14 13:10:19,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:10:19,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:10:19,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-14 13:10:19,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-14 13:10:19,465 INFO L175 Difference]: Start difference. First operand has 162 places, 189 transitions, 1981 flow. Second operand 8 states and 169 transitions. [2024-06-14 13:10:19,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 227 transitions, 2649 flow [2024-06-14 13:10:19,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 227 transitions, 2543 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-14 13:10:19,525 INFO L231 Difference]: Finished difference. Result has 165 places, 195 transitions, 2061 flow [2024-06-14 13:10:19,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1875, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2061, PETRI_PLACES=165, PETRI_TRANSITIONS=195} [2024-06-14 13:10:19,526 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 122 predicate places. [2024-06-14 13:10:19,526 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 195 transitions, 2061 flow [2024-06-14 13:10:19,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:19,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:19,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:19,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 13:10:19,527 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)] === [2024-06-14 13:10:19,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:19,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1536552797, now seen corresponding path program 2 times [2024-06-14 13:10:19,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:19,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672440175] [2024-06-14 13:10:19,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:19,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:20,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:20,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:20,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672440175] [2024-06-14 13:10:20,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672440175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:20,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:20,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:10:20,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278440034] [2024-06-14 13:10:20,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:20,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:10:20,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:20,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:10:20,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:10:20,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:20,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 195 transitions, 2061 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:20,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:20,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:20,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:21,269 INFO L124 PetriNetUnfolderBase]: 1964/3077 cut-off events. [2024-06-14 13:10:21,270 INFO L125 PetriNetUnfolderBase]: For 83878/83878 co-relation queries the response was YES. [2024-06-14 13:10:21,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21419 conditions, 3077 events. 1964/3077 cut-off events. For 83878/83878 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 16243 event pairs, 482 based on Foata normal form. 2/3075 useless extension candidates. Maximal degree in co-relation 21339. Up to 2762 conditions per place. [2024-06-14 13:10:21,295 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 171 selfloop transitions, 54 changer transitions 0/230 dead transitions. [2024-06-14 13:10:21,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 230 transitions, 2807 flow [2024-06-14 13:10:21,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:10:21,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:10:21,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-14 13:10:21,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-14 13:10:21,297 INFO L175 Difference]: Start difference. First operand has 165 places, 195 transitions, 2061 flow. Second operand 9 states and 175 transitions. [2024-06-14 13:10:21,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 230 transitions, 2807 flow [2024-06-14 13:10:21,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 230 transitions, 2692 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-14 13:10:21,374 INFO L231 Difference]: Finished difference. Result has 169 places, 201 transitions, 2180 flow [2024-06-14 13:10:21,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1946, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2180, PETRI_PLACES=169, PETRI_TRANSITIONS=201} [2024-06-14 13:10:21,375 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 126 predicate places. [2024-06-14 13:10:21,375 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 201 transitions, 2180 flow [2024-06-14 13:10:21,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:21,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:21,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:21,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 13:10:21,376 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)] === [2024-06-14 13:10:21,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:21,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1536315647, now seen corresponding path program 3 times [2024-06-14 13:10:21,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:21,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513597021] [2024-06-14 13:10:21,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:21,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:22,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:22,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:22,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513597021] [2024-06-14 13:10:22,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513597021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:22,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:22,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:10:22,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526711511] [2024-06-14 13:10:22,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:22,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:10:22,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:22,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:10:22,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:10:22,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:22,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 201 transitions, 2180 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:22,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:22,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:22,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:23,359 INFO L124 PetriNetUnfolderBase]: 1986/3113 cut-off events. [2024-06-14 13:10:23,359 INFO L125 PetriNetUnfolderBase]: For 89232/89232 co-relation queries the response was YES. [2024-06-14 13:10:23,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21833 conditions, 3113 events. 1986/3113 cut-off events. For 89232/89232 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 16474 event pairs, 432 based on Foata normal form. 2/3113 useless extension candidates. Maximal degree in co-relation 21752. Up to 2843 conditions per place. [2024-06-14 13:10:23,387 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 182 selfloop transitions, 46 changer transitions 0/233 dead transitions. [2024-06-14 13:10:23,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 233 transitions, 2789 flow [2024-06-14 13:10:23,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:10:23,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:10:23,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-14 13:10:23,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-14 13:10:23,389 INFO L175 Difference]: Start difference. First operand has 169 places, 201 transitions, 2180 flow. Second operand 9 states and 171 transitions. [2024-06-14 13:10:23,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 233 transitions, 2789 flow [2024-06-14 13:10:23,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 233 transitions, 2655 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-14 13:10:23,482 INFO L231 Difference]: Finished difference. Result has 173 places, 207 transitions, 2239 flow [2024-06-14 13:10:23,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2063, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2239, PETRI_PLACES=173, PETRI_TRANSITIONS=207} [2024-06-14 13:10:23,483 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 130 predicate places. [2024-06-14 13:10:23,483 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 207 transitions, 2239 flow [2024-06-14 13:10:23,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:23,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:23,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:23,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 13:10:23,484 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)] === [2024-06-14 13:10:23,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:23,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1529886557, now seen corresponding path program 4 times [2024-06-14 13:10:23,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:23,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166827706] [2024-06-14 13:10:23,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:23,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:24,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:24,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:24,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166827706] [2024-06-14 13:10:24,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166827706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:24,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:24,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:10:24,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544175042] [2024-06-14 13:10:24,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:24,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:10:24,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:24,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:10:24,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:10:24,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:24,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 207 transitions, 2239 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:24,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:24,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:24,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:25,073 INFO L124 PetriNetUnfolderBase]: 1981/3106 cut-off events. [2024-06-14 13:10:25,073 INFO L125 PetriNetUnfolderBase]: For 91294/91294 co-relation queries the response was YES. [2024-06-14 13:10:25,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21892 conditions, 3106 events. 1981/3106 cut-off events. For 91294/91294 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 16422 event pairs, 440 based on Foata normal form. 2/3106 useless extension candidates. Maximal degree in co-relation 21809. Up to 2836 conditions per place. [2024-06-14 13:10:25,100 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 181 selfloop transitions, 47 changer transitions 0/233 dead transitions. [2024-06-14 13:10:25,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 233 transitions, 2761 flow [2024-06-14 13:10:25,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:10:25,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:10:25,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-14 13:10:25,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-14 13:10:25,102 INFO L175 Difference]: Start difference. First operand has 173 places, 207 transitions, 2239 flow. Second operand 9 states and 170 transitions. [2024-06-14 13:10:25,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 233 transitions, 2761 flow [2024-06-14 13:10:25,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 233 transitions, 2603 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-14 13:10:25,180 INFO L231 Difference]: Finished difference. Result has 176 places, 207 transitions, 2183 flow [2024-06-14 13:10:25,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2081, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2183, PETRI_PLACES=176, PETRI_TRANSITIONS=207} [2024-06-14 13:10:25,180 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 133 predicate places. [2024-06-14 13:10:25,181 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 207 transitions, 2183 flow [2024-06-14 13:10:25,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:25,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:25,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:25,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 13:10:25,181 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)] === [2024-06-14 13:10:25,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:25,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1287676391, now seen corresponding path program 5 times [2024-06-14 13:10:25,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:25,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764662466] [2024-06-14 13:10:25,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:25,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:26,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:26,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:26,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764662466] [2024-06-14 13:10:26,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764662466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:26,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:26,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:10:26,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186626694] [2024-06-14 13:10:26,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:26,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:10:26,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:26,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:10:26,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:10:26,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:26,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 207 transitions, 2183 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:26,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:26,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:26,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:27,080 INFO L124 PetriNetUnfolderBase]: 2008/3150 cut-off events. [2024-06-14 13:10:27,081 INFO L125 PetriNetUnfolderBase]: For 98121/98121 co-relation queries the response was YES. [2024-06-14 13:10:27,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22348 conditions, 3150 events. 2008/3150 cut-off events. For 98121/98121 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 16710 event pairs, 432 based on Foata normal form. 2/3150 useless extension candidates. Maximal degree in co-relation 22264. Up to 2855 conditions per place. [2024-06-14 13:10:27,108 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 186 selfloop transitions, 54 changer transitions 0/245 dead transitions. [2024-06-14 13:10:27,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 245 transitions, 2989 flow [2024-06-14 13:10:27,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:10:27,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:10:27,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-14 13:10:27,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-14 13:10:27,117 INFO L175 Difference]: Start difference. First operand has 176 places, 207 transitions, 2183 flow. Second operand 10 states and 189 transitions. [2024-06-14 13:10:27,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 245 transitions, 2989 flow [2024-06-14 13:10:27,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 245 transitions, 2847 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-14 13:10:27,201 INFO L231 Difference]: Finished difference. Result has 176 places, 213 transitions, 2287 flow [2024-06-14 13:10:27,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2041, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2287, PETRI_PLACES=176, PETRI_TRANSITIONS=213} [2024-06-14 13:10:27,203 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 133 predicate places. [2024-06-14 13:10:27,203 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 213 transitions, 2287 flow [2024-06-14 13:10:27,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:27,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:27,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:27,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 13:10:27,204 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)] === [2024-06-14 13:10:27,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:27,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1287439241, now seen corresponding path program 6 times [2024-06-14 13:10:27,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:27,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425387538] [2024-06-14 13:10:27,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:27,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:28,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:28,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:28,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425387538] [2024-06-14 13:10:28,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425387538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:28,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:28,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:10:28,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589189599] [2024-06-14 13:10:28,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:28,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:10:28,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:28,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:10:28,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:10:28,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:28,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 213 transitions, 2287 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:28,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:28,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:28,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:29,105 INFO L124 PetriNetUnfolderBase]: 2003/3139 cut-off events. [2024-06-14 13:10:29,106 INFO L125 PetriNetUnfolderBase]: For 103868/103868 co-relation queries the response was YES. [2024-06-14 13:10:29,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22595 conditions, 3139 events. 2003/3139 cut-off events. For 103868/103868 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 16584 event pairs, 482 based on Foata normal form. 2/3137 useless extension candidates. Maximal degree in co-relation 22513. Up to 2835 conditions per place. [2024-06-14 13:10:29,132 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 180 selfloop transitions, 55 changer transitions 0/240 dead transitions. [2024-06-14 13:10:29,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 240 transitions, 2827 flow [2024-06-14 13:10:29,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:10:29,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:10:29,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-14 13:10:29,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-14 13:10:29,134 INFO L175 Difference]: Start difference. First operand has 176 places, 213 transitions, 2287 flow. Second operand 9 states and 170 transitions. [2024-06-14 13:10:29,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 240 transitions, 2827 flow [2024-06-14 13:10:29,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 240 transitions, 2666 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-14 13:10:29,231 INFO L231 Difference]: Finished difference. Result has 179 places, 213 transitions, 2244 flow [2024-06-14 13:10:29,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2126, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2244, PETRI_PLACES=179, PETRI_TRANSITIONS=213} [2024-06-14 13:10:29,232 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 136 predicate places. [2024-06-14 13:10:29,232 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 213 transitions, 2244 flow [2024-06-14 13:10:29,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:29,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:29,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:29,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 13:10:29,233 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)] === [2024-06-14 13:10:29,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:29,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1572776261, now seen corresponding path program 7 times [2024-06-14 13:10:29,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:29,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737506978] [2024-06-14 13:10:29,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:29,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:30,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:30,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:30,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737506978] [2024-06-14 13:10:30,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737506978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:30,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:30,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:10:30,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449555864] [2024-06-14 13:10:30,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:30,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:10:30,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:30,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:10:30,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:10:30,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:30,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 213 transitions, 2244 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:30,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:30,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:30,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:30,877 INFO L124 PetriNetUnfolderBase]: 1998/3132 cut-off events. [2024-06-14 13:10:30,877 INFO L125 PetriNetUnfolderBase]: For 107303/107303 co-relation queries the response was YES. [2024-06-14 13:10:30,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22610 conditions, 3132 events. 1998/3132 cut-off events. For 107303/107303 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 16622 event pairs, 438 based on Foata normal form. 2/3130 useless extension candidates. Maximal degree in co-relation 22526. Up to 2706 conditions per place. [2024-06-14 13:10:30,905 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 149 selfloop transitions, 89 changer transitions 0/243 dead transitions. [2024-06-14 13:10:30,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 243 transitions, 2858 flow [2024-06-14 13:10:30,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:10:30,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:10:30,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-14 13:10:30,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-06-14 13:10:30,907 INFO L175 Difference]: Start difference. First operand has 179 places, 213 transitions, 2244 flow. Second operand 9 states and 172 transitions. [2024-06-14 13:10:30,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 243 transitions, 2858 flow [2024-06-14 13:10:31,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 243 transitions, 2736 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 13:10:31,004 INFO L231 Difference]: Finished difference. Result has 180 places, 216 transitions, 2382 flow [2024-06-14 13:10:31,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2122, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2382, PETRI_PLACES=180, PETRI_TRANSITIONS=216} [2024-06-14 13:10:31,005 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 137 predicate places. [2024-06-14 13:10:31,005 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 216 transitions, 2382 flow [2024-06-14 13:10:31,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:31,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:31,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:31,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 13:10:31,005 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:10:31,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:31,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1729161314, now seen corresponding path program 1 times [2024-06-14 13:10:31,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:31,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102129080] [2024-06-14 13:10:31,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:31,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:31,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:31,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:31,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102129080] [2024-06-14 13:10:31,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102129080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:31,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:31,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:10:31,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661338116] [2024-06-14 13:10:31,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:31,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:10:31,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:31,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:10:31,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:10:31,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:31,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 216 transitions, 2382 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:31,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:31,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:31,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:32,108 INFO L124 PetriNetUnfolderBase]: 2003/3147 cut-off events. [2024-06-14 13:10:32,109 INFO L125 PetriNetUnfolderBase]: For 113618/113618 co-relation queries the response was YES. [2024-06-14 13:10:32,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23232 conditions, 3147 events. 2003/3147 cut-off events. For 113618/113618 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 16622 event pairs, 435 based on Foata normal form. 1/3147 useless extension candidates. Maximal degree in co-relation 23147. Up to 2985 conditions per place. [2024-06-14 13:10:32,137 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 211 selfloop transitions, 22 changer transitions 0/238 dead transitions. [2024-06-14 13:10:32,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 238 transitions, 3056 flow [2024-06-14 13:10:32,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:10:32,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:10:32,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-14 13:10:32,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421768707482993 [2024-06-14 13:10:32,143 INFO L175 Difference]: Start difference. First operand has 180 places, 216 transitions, 2382 flow. Second operand 7 states and 130 transitions. [2024-06-14 13:10:32,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 238 transitions, 3056 flow [2024-06-14 13:10:32,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 238 transitions, 2820 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-14 13:10:32,251 INFO L231 Difference]: Finished difference. Result has 180 places, 222 transitions, 2302 flow [2024-06-14 13:10:32,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2146, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2302, PETRI_PLACES=180, PETRI_TRANSITIONS=222} [2024-06-14 13:10:32,251 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 137 predicate places. [2024-06-14 13:10:32,251 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 222 transitions, 2302 flow [2024-06-14 13:10:32,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:32,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:32,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:32,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 13:10:32,252 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)] === [2024-06-14 13:10:32,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:32,252 INFO L85 PathProgramCache]: Analyzing trace with hash -63439840, now seen corresponding path program 2 times [2024-06-14 13:10:32,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:32,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076765823] [2024-06-14 13:10:32,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:32,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:32,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:32,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:32,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076765823] [2024-06-14 13:10:32,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076765823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:32,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:32,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:10:32,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63405076] [2024-06-14 13:10:32,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:32,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:10:32,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:32,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:10:32,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:10:33,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:33,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 222 transitions, 2302 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:33,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:33,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:33,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:33,629 INFO L124 PetriNetUnfolderBase]: 2013/3161 cut-off events. [2024-06-14 13:10:33,630 INFO L125 PetriNetUnfolderBase]: For 118810/118810 co-relation queries the response was YES. [2024-06-14 13:10:33,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23326 conditions, 3161 events. 2013/3161 cut-off events. For 118810/118810 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 16744 event pairs, 470 based on Foata normal form. 1/3161 useless extension candidates. Maximal degree in co-relation 23240. Up to 3011 conditions per place. [2024-06-14 13:10:33,656 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 215 selfloop transitions, 20 changer transitions 0/240 dead transitions. [2024-06-14 13:10:33,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 240 transitions, 2888 flow [2024-06-14 13:10:33,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:10:33,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:10:33,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-14 13:10:33,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42517006802721086 [2024-06-14 13:10:33,657 INFO L175 Difference]: Start difference. First operand has 180 places, 222 transitions, 2302 flow. Second operand 7 states and 125 transitions. [2024-06-14 13:10:33,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 240 transitions, 2888 flow [2024-06-14 13:10:33,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 240 transitions, 2817 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-14 13:10:33,766 INFO L231 Difference]: Finished difference. Result has 184 places, 228 transitions, 2369 flow [2024-06-14 13:10:33,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2238, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2369, PETRI_PLACES=184, PETRI_TRANSITIONS=228} [2024-06-14 13:10:33,766 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 141 predicate places. [2024-06-14 13:10:33,766 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 228 transitions, 2369 flow [2024-06-14 13:10:33,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:33,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:33,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:33,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 13:10:33,767 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)] === [2024-06-14 13:10:33,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:33,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1729281470, now seen corresponding path program 1 times [2024-06-14 13:10:33,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:33,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207637955] [2024-06-14 13:10:33,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:33,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:34,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:34,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:34,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207637955] [2024-06-14 13:10:34,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207637955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:34,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:34,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:10:34,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257717103] [2024-06-14 13:10:34,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:34,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:10:34,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:34,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:10:34,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:10:34,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:34,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 228 transitions, 2369 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:34,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:34,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:34,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:35,100 INFO L124 PetriNetUnfolderBase]: 2083/3275 cut-off events. [2024-06-14 13:10:35,100 INFO L125 PetriNetUnfolderBase]: For 127031/127031 co-relation queries the response was YES. [2024-06-14 13:10:35,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24035 conditions, 3275 events. 2083/3275 cut-off events. For 127031/127031 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 17561 event pairs, 488 based on Foata normal form. 6/3278 useless extension candidates. Maximal degree in co-relation 23947. Up to 2898 conditions per place. [2024-06-14 13:10:35,125 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 202 selfloop transitions, 57 changer transitions 0/264 dead transitions. [2024-06-14 13:10:35,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 264 transitions, 3216 flow [2024-06-14 13:10:35,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:10:35,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:10:35,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-14 13:10:35,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47278911564625853 [2024-06-14 13:10:35,127 INFO L175 Difference]: Start difference. First operand has 184 places, 228 transitions, 2369 flow. Second operand 7 states and 139 transitions. [2024-06-14 13:10:35,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 264 transitions, 3216 flow [2024-06-14 13:10:35,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 264 transitions, 3138 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-14 13:10:35,230 INFO L231 Difference]: Finished difference. Result has 188 places, 244 transitions, 2571 flow [2024-06-14 13:10:35,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2291, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2571, PETRI_PLACES=188, PETRI_TRANSITIONS=244} [2024-06-14 13:10:35,231 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 145 predicate places. [2024-06-14 13:10:35,231 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 244 transitions, 2571 flow [2024-06-14 13:10:35,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:35,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:35,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:35,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 13:10:35,232 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)] === [2024-06-14 13:10:35,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:35,232 INFO L85 PathProgramCache]: Analyzing trace with hash 555435158, now seen corresponding path program 2 times [2024-06-14 13:10:35,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:35,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758456333] [2024-06-14 13:10:35,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:35,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:35,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:35,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:35,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758456333] [2024-06-14 13:10:35,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758456333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:35,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:35,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:10:35,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037666447] [2024-06-14 13:10:35,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:35,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:10:35,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:35,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:10:35,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:10:35,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:35,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 244 transitions, 2571 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:35,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:35,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:35,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:36,430 INFO L124 PetriNetUnfolderBase]: 2113/3315 cut-off events. [2024-06-14 13:10:36,430 INFO L125 PetriNetUnfolderBase]: For 133210/133210 co-relation queries the response was YES. [2024-06-14 13:10:36,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24690 conditions, 3315 events. 2113/3315 cut-off events. For 133210/133210 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 17782 event pairs, 494 based on Foata normal form. 6/3318 useless extension candidates. Maximal degree in co-relation 24600. Up to 3120 conditions per place. [2024-06-14 13:10:36,465 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 233 selfloop transitions, 20 changer transitions 0/258 dead transitions. [2024-06-14 13:10:36,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 258 transitions, 3175 flow [2024-06-14 13:10:36,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:10:36,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:10:36,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-14 13:10:36,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44841269841269843 [2024-06-14 13:10:36,467 INFO L175 Difference]: Start difference. First operand has 188 places, 244 transitions, 2571 flow. Second operand 6 states and 113 transitions. [2024-06-14 13:10:36,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 258 transitions, 3175 flow [2024-06-14 13:10:36,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 258 transitions, 3092 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-14 13:10:36,607 INFO L231 Difference]: Finished difference. Result has 191 places, 248 transitions, 2587 flow [2024-06-14 13:10:36,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2491, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2587, PETRI_PLACES=191, PETRI_TRANSITIONS=248} [2024-06-14 13:10:36,607 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 148 predicate places. [2024-06-14 13:10:36,607 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 248 transitions, 2587 flow [2024-06-14 13:10:36,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:36,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:36,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:36,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 13:10:36,608 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)] === [2024-06-14 13:10:36,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:36,608 INFO L85 PathProgramCache]: Analyzing trace with hash 555197822, now seen corresponding path program 3 times [2024-06-14 13:10:36,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:36,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413637551] [2024-06-14 13:10:36,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:36,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:37,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:37,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:37,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413637551] [2024-06-14 13:10:37,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413637551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:37,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:37,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:10:37,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150805352] [2024-06-14 13:10:37,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:37,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:10:37,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:37,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:10:37,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:10:37,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:37,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 248 transitions, 2587 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:37,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:37,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:37,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:37,905 INFO L124 PetriNetUnfolderBase]: 2110/3315 cut-off events. [2024-06-14 13:10:37,905 INFO L125 PetriNetUnfolderBase]: For 135392/135392 co-relation queries the response was YES. [2024-06-14 13:10:37,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24622 conditions, 3315 events. 2110/3315 cut-off events. For 135392/135392 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 17778 event pairs, 429 based on Foata normal form. 1/3315 useless extension candidates. Maximal degree in co-relation 24531. Up to 3141 conditions per place. [2024-06-14 13:10:37,935 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 237 selfloop transitions, 20 changer transitions 0/262 dead transitions. [2024-06-14 13:10:37,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 262 transitions, 3137 flow [2024-06-14 13:10:37,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:10:37,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:10:37,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-14 13:10:37,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45634920634920634 [2024-06-14 13:10:37,936 INFO L175 Difference]: Start difference. First operand has 191 places, 248 transitions, 2587 flow. Second operand 6 states and 115 transitions. [2024-06-14 13:10:37,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 262 transitions, 3137 flow [2024-06-14 13:10:38,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 262 transitions, 3047 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-14 13:10:38,069 INFO L231 Difference]: Finished difference. Result has 193 places, 248 transitions, 2547 flow [2024-06-14 13:10:38,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2497, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2547, PETRI_PLACES=193, PETRI_TRANSITIONS=248} [2024-06-14 13:10:38,070 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 150 predicate places. [2024-06-14 13:10:38,070 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 248 transitions, 2547 flow [2024-06-14 13:10:38,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:38,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:38,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:38,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 13:10:38,070 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:10:38,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:38,071 INFO L85 PathProgramCache]: Analyzing trace with hash 563241578, now seen corresponding path program 3 times [2024-06-14 13:10:38,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:38,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923918680] [2024-06-14 13:10:38,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:38,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:38,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:38,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:38,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923918680] [2024-06-14 13:10:38,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923918680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:38,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:38,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:10:38,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732398057] [2024-06-14 13:10:38,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:38,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:10:38,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:38,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:10:38,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:10:38,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:38,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 248 transitions, 2547 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:38,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:38,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:38,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:39,266 INFO L124 PetriNetUnfolderBase]: 2071/3248 cut-off events. [2024-06-14 13:10:39,266 INFO L125 PetriNetUnfolderBase]: For 136911/136911 co-relation queries the response was YES. [2024-06-14 13:10:39,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24105 conditions, 3248 events. 2071/3248 cut-off events. For 136911/136911 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 17289 event pairs, 475 based on Foata normal form. 6/3251 useless extension candidates. Maximal degree in co-relation 24014. Up to 2874 conditions per place. [2024-06-14 13:10:39,297 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 197 selfloop transitions, 61 changer transitions 0/263 dead transitions. [2024-06-14 13:10:39,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 263 transitions, 3159 flow [2024-06-14 13:10:39,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:10:39,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:10:39,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-14 13:10:39,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-14 13:10:39,299 INFO L175 Difference]: Start difference. First operand has 193 places, 248 transitions, 2547 flow. Second operand 6 states and 120 transitions. [2024-06-14 13:10:39,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 263 transitions, 3159 flow [2024-06-14 13:10:39,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 263 transitions, 3105 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-14 13:10:39,448 INFO L231 Difference]: Finished difference. Result has 194 places, 248 transitions, 2635 flow [2024-06-14 13:10:39,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2493, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2635, PETRI_PLACES=194, PETRI_TRANSITIONS=248} [2024-06-14 13:10:39,450 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 151 predicate places. [2024-06-14 13:10:39,450 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 248 transitions, 2635 flow [2024-06-14 13:10:39,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:39,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:39,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:39,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 13:10:39,450 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:10:39,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:39,451 INFO L85 PathProgramCache]: Analyzing trace with hash 555444086, now seen corresponding path program 1 times [2024-06-14 13:10:39,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:39,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129013269] [2024-06-14 13:10:39,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:39,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:40,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:40,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:40,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129013269] [2024-06-14 13:10:40,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129013269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:40,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:40,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:10:40,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354919393] [2024-06-14 13:10:40,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:40,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:10:40,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:40,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:10:40,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:10:40,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:40,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 248 transitions, 2635 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:10:40,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:40,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:40,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:41,111 INFO L124 PetriNetUnfolderBase]: 2110/3303 cut-off events. [2024-06-14 13:10:41,111 INFO L125 PetriNetUnfolderBase]: For 149271/149271 co-relation queries the response was YES. [2024-06-14 13:10:41,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24683 conditions, 3303 events. 2110/3303 cut-off events. For 149271/149271 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 17644 event pairs, 447 based on Foata normal form. 14/3313 useless extension candidates. Maximal degree in co-relation 24591. Up to 3031 conditions per place. [2024-06-14 13:10:41,141 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 233 selfloop transitions, 28 changer transitions 0/266 dead transitions. [2024-06-14 13:10:41,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 266 transitions, 3303 flow [2024-06-14 13:10:41,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:10:41,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:10:41,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-06-14 13:10:41,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-14 13:10:41,142 INFO L175 Difference]: Start difference. First operand has 194 places, 248 transitions, 2635 flow. Second operand 6 states and 119 transitions. [2024-06-14 13:10:41,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 266 transitions, 3303 flow [2024-06-14 13:10:41,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 266 transitions, 3141 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-14 13:10:41,306 INFO L231 Difference]: Finished difference. Result has 195 places, 250 transitions, 2566 flow [2024-06-14 13:10:41,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2473, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2566, PETRI_PLACES=195, PETRI_TRANSITIONS=250} [2024-06-14 13:10:41,306 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 152 predicate places. [2024-06-14 13:10:41,306 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 250 transitions, 2566 flow [2024-06-14 13:10:41,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:10:41,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:41,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:41,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 13:10:41,307 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)] === [2024-06-14 13:10:41,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:41,307 INFO L85 PathProgramCache]: Analyzing trace with hash 666038722, now seen corresponding path program 1 times [2024-06-14 13:10:41,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:41,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030524845] [2024-06-14 13:10:41,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:41,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:42,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:42,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:42,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030524845] [2024-06-14 13:10:42,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030524845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:42,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:42,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:10:42,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315537072] [2024-06-14 13:10:42,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:42,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:10:42,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:42,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:10:42,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:10:42,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:42,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 250 transitions, 2566 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:42,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:42,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:42,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:43,123 INFO L124 PetriNetUnfolderBase]: 2144/3371 cut-off events. [2024-06-14 13:10:43,123 INFO L125 PetriNetUnfolderBase]: For 140637/140637 co-relation queries the response was YES. [2024-06-14 13:10:43,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24930 conditions, 3371 events. 2144/3371 cut-off events. For 140637/140637 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 18146 event pairs, 424 based on Foata normal form. 4/3374 useless extension candidates. Maximal degree in co-relation 24837. Up to 3100 conditions per place. [2024-06-14 13:10:43,155 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 252 selfloop transitions, 29 changer transitions 0/286 dead transitions. [2024-06-14 13:10:43,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 286 transitions, 3315 flow [2024-06-14 13:10:43,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:10:43,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:10:43,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-14 13:10:43,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-14 13:10:43,157 INFO L175 Difference]: Start difference. First operand has 195 places, 250 transitions, 2566 flow. Second operand 9 states and 170 transitions. [2024-06-14 13:10:43,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 286 transitions, 3315 flow [2024-06-14 13:10:43,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 286 transitions, 3244 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-14 13:10:43,320 INFO L231 Difference]: Finished difference. Result has 201 places, 256 transitions, 2686 flow [2024-06-14 13:10:43,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2495, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2686, PETRI_PLACES=201, PETRI_TRANSITIONS=256} [2024-06-14 13:10:43,320 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 158 predicate places. [2024-06-14 13:10:43,320 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 256 transitions, 2686 flow [2024-06-14 13:10:43,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:43,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:43,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:43,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 13:10:43,321 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:10:43,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:43,321 INFO L85 PathProgramCache]: Analyzing trace with hash -467098506, now seen corresponding path program 2 times [2024-06-14 13:10:43,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:43,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298847929] [2024-06-14 13:10:43,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:43,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:44,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:44,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:44,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298847929] [2024-06-14 13:10:44,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298847929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:44,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:44,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:10:44,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142036260] [2024-06-14 13:10:44,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:44,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:10:44,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:44,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:10:44,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:10:44,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:44,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 256 transitions, 2686 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:44,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:44,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:44,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:44,985 INFO L124 PetriNetUnfolderBase]: 2161/3398 cut-off events. [2024-06-14 13:10:44,986 INFO L125 PetriNetUnfolderBase]: For 147437/147437 co-relation queries the response was YES. [2024-06-14 13:10:45,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25420 conditions, 3398 events. 2161/3398 cut-off events. For 147437/147437 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 18260 event pairs, 413 based on Foata normal form. 4/3401 useless extension candidates. Maximal degree in co-relation 25325. Up to 3145 conditions per place. [2024-06-14 13:10:45,017 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 272 selfloop transitions, 19 changer transitions 0/296 dead transitions. [2024-06-14 13:10:45,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 296 transitions, 3486 flow [2024-06-14 13:10:45,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:10:45,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:10:45,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-14 13:10:45,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-14 13:10:45,018 INFO L175 Difference]: Start difference. First operand has 201 places, 256 transitions, 2686 flow. Second operand 9 states and 170 transitions. [2024-06-14 13:10:45,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 296 transitions, 3486 flow [2024-06-14 13:10:45,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 296 transitions, 3365 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-14 13:10:45,215 INFO L231 Difference]: Finished difference. Result has 208 places, 262 transitions, 2754 flow [2024-06-14 13:10:45,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2565, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2754, PETRI_PLACES=208, PETRI_TRANSITIONS=262} [2024-06-14 13:10:45,216 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 165 predicate places. [2024-06-14 13:10:45,216 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 262 transitions, 2754 flow [2024-06-14 13:10:45,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:45,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:45,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:45,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 13:10:45,217 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)] === [2024-06-14 13:10:45,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:45,218 INFO L85 PathProgramCache]: Analyzing trace with hash -378532746, now seen corresponding path program 3 times [2024-06-14 13:10:45,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:45,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125498148] [2024-06-14 13:10:45,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:45,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:46,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:46,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:46,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125498148] [2024-06-14 13:10:46,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125498148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:46,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:46,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:10:46,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306802152] [2024-06-14 13:10:46,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:46,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:10:46,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:46,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:10:46,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:10:46,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:46,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 262 transitions, 2754 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:46,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:46,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:46,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:47,071 INFO L124 PetriNetUnfolderBase]: 2178/3425 cut-off events. [2024-06-14 13:10:47,071 INFO L125 PetriNetUnfolderBase]: For 154708/154708 co-relation queries the response was YES. [2024-06-14 13:10:47,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25789 conditions, 3425 events. 2178/3425 cut-off events. For 154708/154708 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 18506 event pairs, 435 based on Foata normal form. 4/3428 useless extension candidates. Maximal degree in co-relation 25690. Up to 3171 conditions per place. [2024-06-14 13:10:47,103 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 272 selfloop transitions, 24 changer transitions 0/301 dead transitions. [2024-06-14 13:10:47,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 301 transitions, 3561 flow [2024-06-14 13:10:47,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:10:47,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:10:47,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-14 13:10:47,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-06-14 13:10:47,104 INFO L175 Difference]: Start difference. First operand has 208 places, 262 transitions, 2754 flow. Second operand 9 states and 172 transitions. [2024-06-14 13:10:47,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 301 transitions, 3561 flow [2024-06-14 13:10:47,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 301 transitions, 3429 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-06-14 13:10:47,283 INFO L231 Difference]: Finished difference. Result has 214 places, 268 transitions, 2820 flow [2024-06-14 13:10:47,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2622, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2820, PETRI_PLACES=214, PETRI_TRANSITIONS=268} [2024-06-14 13:10:47,284 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 171 predicate places. [2024-06-14 13:10:47,284 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 268 transitions, 2820 flow [2024-06-14 13:10:47,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:47,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:47,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:47,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 13:10:47,284 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)] === [2024-06-14 13:10:47,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:47,285 INFO L85 PathProgramCache]: Analyzing trace with hash -52553742, now seen corresponding path program 1 times [2024-06-14 13:10:47,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:47,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972382152] [2024-06-14 13:10:47,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:47,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:48,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:48,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:48,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972382152] [2024-06-14 13:10:48,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972382152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:48,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:48,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:10:48,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538075986] [2024-06-14 13:10:48,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:48,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:10:48,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:48,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:10:48,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:10:48,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:48,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 268 transitions, 2820 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:48,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:48,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:48,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:49,377 INFO L124 PetriNetUnfolderBase]: 2363/3736 cut-off events. [2024-06-14 13:10:49,378 INFO L125 PetriNetUnfolderBase]: For 186366/186366 co-relation queries the response was YES. [2024-06-14 13:10:49,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28621 conditions, 3736 events. 2363/3736 cut-off events. For 186366/186366 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 20878 event pairs, 454 based on Foata normal form. 12/3747 useless extension candidates. Maximal degree in co-relation 28519. Up to 3157 conditions per place. [2024-06-14 13:10:49,418 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 270 selfloop transitions, 37 changer transitions 0/312 dead transitions. [2024-06-14 13:10:49,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 312 transitions, 3849 flow [2024-06-14 13:10:49,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:10:49,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:10:49,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-14 13:10:49,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2024-06-14 13:10:49,420 INFO L175 Difference]: Start difference. First operand has 214 places, 268 transitions, 2820 flow. Second operand 10 states and 194 transitions. [2024-06-14 13:10:49,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 312 transitions, 3849 flow [2024-06-14 13:10:49,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 312 transitions, 3707 flow, removed 62 selfloop flow, removed 4 redundant places. [2024-06-14 13:10:49,650 INFO L231 Difference]: Finished difference. Result has 221 places, 271 transitions, 2867 flow [2024-06-14 13:10:49,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2678, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2867, PETRI_PLACES=221, PETRI_TRANSITIONS=271} [2024-06-14 13:10:49,650 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 178 predicate places. [2024-06-14 13:10:49,651 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 271 transitions, 2867 flow [2024-06-14 13:10:49,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:49,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:49,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:49,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 13:10:49,652 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)] === [2024-06-14 13:10:49,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:49,652 INFO L85 PathProgramCache]: Analyzing trace with hash -52820652, now seen corresponding path program 2 times [2024-06-14 13:10:49,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:49,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860414331] [2024-06-14 13:10:49,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:49,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:50,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:50,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860414331] [2024-06-14 13:10:50,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860414331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:50,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:50,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:10:50,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607984326] [2024-06-14 13:10:50,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:50,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:10:50,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:50,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:10:50,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:10:50,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:50,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 271 transitions, 2867 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:50,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:50,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:50,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:51,749 INFO L124 PetriNetUnfolderBase]: 2335/3692 cut-off events. [2024-06-14 13:10:51,749 INFO L125 PetriNetUnfolderBase]: For 183372/183372 co-relation queries the response was YES. [2024-06-14 13:10:51,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27755 conditions, 3692 events. 2335/3692 cut-off events. For 183372/183372 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 20541 event pairs, 474 based on Foata normal form. 16/3707 useless extension candidates. Maximal degree in co-relation 27650. Up to 3319 conditions per place. [2024-06-14 13:10:51,785 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 260 selfloop transitions, 43 changer transitions 0/308 dead transitions. [2024-06-14 13:10:51,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 308 transitions, 3607 flow [2024-06-14 13:10:51,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:10:51,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:10:51,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-14 13:10:51,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-14 13:10:51,788 INFO L175 Difference]: Start difference. First operand has 221 places, 271 transitions, 2867 flow. Second operand 10 states and 190 transitions. [2024-06-14 13:10:51,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 308 transitions, 3607 flow [2024-06-14 13:10:51,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 308 transitions, 3527 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-14 13:10:52,020 INFO L231 Difference]: Finished difference. Result has 225 places, 271 transitions, 2880 flow [2024-06-14 13:10:52,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2787, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2880, PETRI_PLACES=225, PETRI_TRANSITIONS=271} [2024-06-14 13:10:52,021 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 182 predicate places. [2024-06-14 13:10:52,021 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 271 transitions, 2880 flow [2024-06-14 13:10:52,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:52,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:52,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:52,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 13:10:52,022 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)] === [2024-06-14 13:10:52,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:52,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1255906302, now seen corresponding path program 4 times [2024-06-14 13:10:52,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:52,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926197397] [2024-06-14 13:10:52,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:52,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:52,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:52,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:52,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926197397] [2024-06-14 13:10:52,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926197397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:52,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:52,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:10:52,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026888811] [2024-06-14 13:10:52,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:52,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:10:52,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:52,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:10:52,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:10:53,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:53,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 271 transitions, 2880 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:53,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:53,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:53,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:53,906 INFO L124 PetriNetUnfolderBase]: 2352/3715 cut-off events. [2024-06-14 13:10:53,906 INFO L125 PetriNetUnfolderBase]: For 179151/179151 co-relation queries the response was YES. [2024-06-14 13:10:53,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28013 conditions, 3715 events. 2352/3715 cut-off events. For 179151/179151 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 20697 event pairs, 480 based on Foata normal form. 4/3717 useless extension candidates. Maximal degree in co-relation 27906. Up to 3413 conditions per place. [2024-06-14 13:10:53,939 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 248 selfloop transitions, 47 changer transitions 0/300 dead transitions. [2024-06-14 13:10:53,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 300 transitions, 3594 flow [2024-06-14 13:10:53,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:10:53,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:10:53,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-14 13:10:53,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-14 13:10:53,940 INFO L175 Difference]: Start difference. First operand has 225 places, 271 transitions, 2880 flow. Second operand 9 states and 169 transitions. [2024-06-14 13:10:53,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 300 transitions, 3594 flow [2024-06-14 13:10:54,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 300 transitions, 3507 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-14 13:10:54,180 INFO L231 Difference]: Finished difference. Result has 226 places, 273 transitions, 2954 flow [2024-06-14 13:10:54,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2793, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2954, PETRI_PLACES=226, PETRI_TRANSITIONS=273} [2024-06-14 13:10:54,181 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 183 predicate places. [2024-06-14 13:10:54,181 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 273 transitions, 2954 flow [2024-06-14 13:10:54,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:54,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:54,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:54,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 13:10:54,181 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)] === [2024-06-14 13:10:54,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:54,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1859586226, now seen corresponding path program 5 times [2024-06-14 13:10:54,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:54,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635150134] [2024-06-14 13:10:54,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:54,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:55,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:55,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:55,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635150134] [2024-06-14 13:10:55,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635150134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:55,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:55,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:10:55,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362187966] [2024-06-14 13:10:55,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:55,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:10:55,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:55,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:10:55,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:10:55,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:55,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 273 transitions, 2954 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:55,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:55,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:55,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:55,873 INFO L124 PetriNetUnfolderBase]: 2369/3742 cut-off events. [2024-06-14 13:10:55,873 INFO L125 PetriNetUnfolderBase]: For 187258/187258 co-relation queries the response was YES. [2024-06-14 13:10:55,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28503 conditions, 3742 events. 2369/3742 cut-off events. For 187258/187258 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 20910 event pairs, 480 based on Foata normal form. 4/3744 useless extension candidates. Maximal degree in co-relation 28395. Up to 3440 conditions per place. [2024-06-14 13:10:55,913 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 252 selfloop transitions, 45 changer transitions 0/302 dead transitions. [2024-06-14 13:10:55,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 302 transitions, 3676 flow [2024-06-14 13:10:55,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:10:55,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:10:55,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-14 13:10:55,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-14 13:10:55,915 INFO L175 Difference]: Start difference. First operand has 226 places, 273 transitions, 2954 flow. Second operand 9 states and 171 transitions. [2024-06-14 13:10:55,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 302 transitions, 3676 flow [2024-06-14 13:10:56,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 302 transitions, 3533 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-14 13:10:56,248 INFO L231 Difference]: Finished difference. Result has 228 places, 275 transitions, 2972 flow [2024-06-14 13:10:56,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2811, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2972, PETRI_PLACES=228, PETRI_TRANSITIONS=275} [2024-06-14 13:10:56,248 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 185 predicate places. [2024-06-14 13:10:56,249 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 275 transitions, 2972 flow [2024-06-14 13:10:56,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:56,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:56,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:56,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 13:10:56,249 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)] === [2024-06-14 13:10:56,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:56,250 INFO L85 PathProgramCache]: Analyzing trace with hash -627249726, now seen corresponding path program 6 times [2024-06-14 13:10:56,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:56,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249393026] [2024-06-14 13:10:56,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:56,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:57,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:57,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:57,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249393026] [2024-06-14 13:10:57,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249393026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:57,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:57,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:10:57,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8237419] [2024-06-14 13:10:57,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:57,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:10:57,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:57,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:10:57,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:10:57,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:57,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 275 transitions, 2972 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:57,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:57,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:57,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:10:58,105 INFO L124 PetriNetUnfolderBase]: 2386/3779 cut-off events. [2024-06-14 13:10:58,105 INFO L125 PetriNetUnfolderBase]: For 194946/194946 co-relation queries the response was YES. [2024-06-14 13:10:58,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28878 conditions, 3779 events. 2386/3779 cut-off events. For 194946/194946 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 21143 event pairs, 490 based on Foata normal form. 4/3781 useless extension candidates. Maximal degree in co-relation 28769. Up to 3467 conditions per place. [2024-06-14 13:10:58,146 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 253 selfloop transitions, 46 changer transitions 0/304 dead transitions. [2024-06-14 13:10:58,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 304 transitions, 3702 flow [2024-06-14 13:10:58,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:10:58,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:10:58,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-14 13:10:58,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-14 13:10:58,162 INFO L175 Difference]: Start difference. First operand has 228 places, 275 transitions, 2972 flow. Second operand 9 states and 170 transitions. [2024-06-14 13:10:58,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 304 transitions, 3702 flow [2024-06-14 13:10:58,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 304 transitions, 3559 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-14 13:10:58,458 INFO L231 Difference]: Finished difference. Result has 230 places, 277 transitions, 2996 flow [2024-06-14 13:10:58,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2829, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2996, PETRI_PLACES=230, PETRI_TRANSITIONS=277} [2024-06-14 13:10:58,459 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 187 predicate places. [2024-06-14 13:10:58,459 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 277 transitions, 2996 flow [2024-06-14 13:10:58,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:58,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:10:58,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:10:58,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 13:10:58,460 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)] === [2024-06-14 13:10:58,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:10:58,460 INFO L85 PathProgramCache]: Analyzing trace with hash -627397596, now seen corresponding path program 7 times [2024-06-14 13:10:58,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:10:58,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726717844] [2024-06-14 13:10:58,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:10:58,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:10:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:10:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:10:59,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:10:59,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726717844] [2024-06-14 13:10:59,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726717844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:10:59,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:10:59,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:10:59,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050388394] [2024-06-14 13:10:59,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:10:59,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:10:59,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:10:59,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:10:59,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:10:59,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:10:59,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 277 transitions, 2996 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:10:59,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:10:59,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:10:59,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:00,235 INFO L124 PetriNetUnfolderBase]: 2378/3767 cut-off events. [2024-06-14 13:11:00,235 INFO L125 PetriNetUnfolderBase]: For 198070/198070 co-relation queries the response was YES. [2024-06-14 13:11:00,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28718 conditions, 3767 events. 2378/3767 cut-off events. For 198070/198070 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 21086 event pairs, 481 based on Foata normal form. 4/3769 useless extension candidates. Maximal degree in co-relation 28608. Up to 3378 conditions per place. [2024-06-14 13:11:00,282 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 251 selfloop transitions, 53 changer transitions 0/309 dead transitions. [2024-06-14 13:11:00,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 309 transitions, 3796 flow [2024-06-14 13:11:00,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:11:00,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:11:00,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-14 13:11:00,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-14 13:11:00,296 INFO L175 Difference]: Start difference. First operand has 230 places, 277 transitions, 2996 flow. Second operand 9 states and 171 transitions. [2024-06-14 13:11:00,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 309 transitions, 3796 flow [2024-06-14 13:11:00,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 309 transitions, 3647 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-14 13:11:00,598 INFO L231 Difference]: Finished difference. Result has 233 places, 281 transitions, 3100 flow [2024-06-14 13:11:00,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2847, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3100, PETRI_PLACES=233, PETRI_TRANSITIONS=281} [2024-06-14 13:11:00,598 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 190 predicate places. [2024-06-14 13:11:00,599 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 281 transitions, 3100 flow [2024-06-14 13:11:00,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:00,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:11:00,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:11:00,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 13:11:00,599 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)] === [2024-06-14 13:11:00,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:11:00,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1080822874, now seen corresponding path program 3 times [2024-06-14 13:11:00,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:11:00,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351368874] [2024-06-14 13:11:00,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:11:00,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:11:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:11:01,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:11:01,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:11:01,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351368874] [2024-06-14 13:11:01,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351368874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:11:01,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:11:01,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:11:01,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200463020] [2024-06-14 13:11:01,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:11:01,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:11:01,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:11:01,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:11:01,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:11:01,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:11:01,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 281 transitions, 3100 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:01,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:11:01,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:11:01,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:02,777 INFO L124 PetriNetUnfolderBase]: 2505/3990 cut-off events. [2024-06-14 13:11:02,778 INFO L125 PetriNetUnfolderBase]: For 236665/236665 co-relation queries the response was YES. [2024-06-14 13:11:02,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31315 conditions, 3990 events. 2505/3990 cut-off events. For 236665/236665 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 22871 event pairs, 514 based on Foata normal form. 12/4000 useless extension candidates. Maximal degree in co-relation 31203. Up to 3296 conditions per place. [2024-06-14 13:11:02,821 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 237 selfloop transitions, 84 changer transitions 0/326 dead transitions. [2024-06-14 13:11:02,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 326 transitions, 4184 flow [2024-06-14 13:11:02,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:11:02,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:11:02,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-14 13:11:02,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46320346320346323 [2024-06-14 13:11:02,823 INFO L175 Difference]: Start difference. First operand has 233 places, 281 transitions, 3100 flow. Second operand 11 states and 214 transitions. [2024-06-14 13:11:02,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 326 transitions, 4184 flow [2024-06-14 13:11:03,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 326 transitions, 4027 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-14 13:11:03,177 INFO L231 Difference]: Finished difference. Result has 239 places, 283 transitions, 3211 flow [2024-06-14 13:11:03,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2943, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3211, PETRI_PLACES=239, PETRI_TRANSITIONS=283} [2024-06-14 13:11:03,178 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 196 predicate places. [2024-06-14 13:11:03,178 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 283 transitions, 3211 flow [2024-06-14 13:11:03,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:03,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:11:03,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:11:03,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 13:11:03,179 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)] === [2024-06-14 13:11:03,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:11:03,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1263263904, now seen corresponding path program 4 times [2024-06-14 13:11:03,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:11:03,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497393434] [2024-06-14 13:11:03,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:11:03,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:11:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:11:04,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:11:04,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:11:04,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497393434] [2024-06-14 13:11:04,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497393434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:11:04,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:11:04,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:11:04,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090708499] [2024-06-14 13:11:04,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:11:04,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:11:04,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:11:04,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:11:04,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:11:04,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:11:04,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 283 transitions, 3211 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:04,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:11:04,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:11:04,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:05,466 INFO L124 PetriNetUnfolderBase]: 2563/4088 cut-off events. [2024-06-14 13:11:05,467 INFO L125 PetriNetUnfolderBase]: For 252605/252605 co-relation queries the response was YES. [2024-06-14 13:11:05,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32313 conditions, 4088 events. 2563/4088 cut-off events. For 252605/252605 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 23573 event pairs, 539 based on Foata normal form. 16/4102 useless extension candidates. Maximal degree in co-relation 32199. Up to 3647 conditions per place. [2024-06-14 13:11:05,513 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 260 selfloop transitions, 57 changer transitions 0/322 dead transitions. [2024-06-14 13:11:05,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 322 transitions, 4027 flow [2024-06-14 13:11:05,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:11:05,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:11:05,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-14 13:11:05,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44805194805194803 [2024-06-14 13:11:05,515 INFO L175 Difference]: Start difference. First operand has 239 places, 283 transitions, 3211 flow. Second operand 11 states and 207 transitions. [2024-06-14 13:11:05,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 322 transitions, 4027 flow [2024-06-14 13:11:05,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 322 transitions, 3877 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-14 13:11:05,858 INFO L231 Difference]: Finished difference. Result has 243 places, 284 transitions, 3235 flow [2024-06-14 13:11:05,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3071, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3235, PETRI_PLACES=243, PETRI_TRANSITIONS=284} [2024-06-14 13:11:05,859 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 200 predicate places. [2024-06-14 13:11:05,859 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 284 transitions, 3235 flow [2024-06-14 13:11:05,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:05,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:11:05,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:11:05,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 13:11:05,860 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:11:05,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:11:05,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1255912254, now seen corresponding path program 5 times [2024-06-14 13:11:05,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:11:05,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189210988] [2024-06-14 13:11:05,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:11:05,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:11:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:11:07,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:11:07,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:11:07,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189210988] [2024-06-14 13:11:07,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189210988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:11:07,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:11:07,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:11:07,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091507248] [2024-06-14 13:11:07,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:11:07,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:11:07,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:11:07,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:11:07,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:11:07,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:11:07,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 284 transitions, 3235 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:07,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:11:07,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:11:07,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:08,293 INFO L124 PetriNetUnfolderBase]: 2621/4172 cut-off events. [2024-06-14 13:11:08,293 INFO L125 PetriNetUnfolderBase]: For 259432/259432 co-relation queries the response was YES. [2024-06-14 13:11:08,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32981 conditions, 4172 events. 2621/4172 cut-off events. For 259432/259432 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 24200 event pairs, 550 based on Foata normal form. 16/4184 useless extension candidates. Maximal degree in co-relation 32865. Up to 3720 conditions per place. [2024-06-14 13:11:08,334 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 258 selfloop transitions, 57 changer transitions 0/320 dead transitions. [2024-06-14 13:11:08,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 320 transitions, 4033 flow [2024-06-14 13:11:08,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:11:08,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:11:08,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-14 13:11:08,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-14 13:11:08,336 INFO L175 Difference]: Start difference. First operand has 243 places, 284 transitions, 3235 flow. Second operand 10 states and 190 transitions. [2024-06-14 13:11:08,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 320 transitions, 4033 flow [2024-06-14 13:11:08,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 320 transitions, 3913 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-14 13:11:08,654 INFO L231 Difference]: Finished difference. Result has 244 places, 285 transitions, 3280 flow [2024-06-14 13:11:08,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3115, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3280, PETRI_PLACES=244, PETRI_TRANSITIONS=285} [2024-06-14 13:11:08,654 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 201 predicate places. [2024-06-14 13:11:08,654 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 285 transitions, 3280 flow [2024-06-14 13:11:08,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:08,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:11:08,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:11:08,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 13:11:08,655 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:11:08,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:11:08,655 INFO L85 PathProgramCache]: Analyzing trace with hash -427941984, now seen corresponding path program 6 times [2024-06-14 13:11:08,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:11:08,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109647687] [2024-06-14 13:11:08,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:11:08,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:11:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:11:09,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:11:09,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:11:09,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109647687] [2024-06-14 13:11:09,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109647687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:11:09,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:11:09,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:11:09,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892860579] [2024-06-14 13:11:09,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:11:09,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:11:09,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:11:09,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:11:09,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:11:10,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:11:10,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 285 transitions, 3280 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:10,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:11:10,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:11:10,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:11,019 INFO L124 PetriNetUnfolderBase]: 2679/4270 cut-off events. [2024-06-14 13:11:11,019 INFO L125 PetriNetUnfolderBase]: For 272293/272293 co-relation queries the response was YES. [2024-06-14 13:11:11,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33883 conditions, 4270 events. 2679/4270 cut-off events. For 272293/272293 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 24995 event pairs, 560 based on Foata normal form. 16/4282 useless extension candidates. Maximal degree in co-relation 33766. Up to 3818 conditions per place. [2024-06-14 13:11:11,068 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 262 selfloop transitions, 54 changer transitions 0/321 dead transitions. [2024-06-14 13:11:11,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 321 transitions, 4088 flow [2024-06-14 13:11:11,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:11:11,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:11:11,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-14 13:11:11,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-14 13:11:11,070 INFO L175 Difference]: Start difference. First operand has 244 places, 285 transitions, 3280 flow. Second operand 10 states and 192 transitions. [2024-06-14 13:11:11,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 321 transitions, 4088 flow [2024-06-14 13:11:11,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 321 transitions, 3967 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 13:11:11,471 INFO L231 Difference]: Finished difference. Result has 246 places, 286 transitions, 3326 flow [2024-06-14 13:11:11,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3159, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3326, PETRI_PLACES=246, PETRI_TRANSITIONS=286} [2024-06-14 13:11:11,471 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 203 predicate places. [2024-06-14 13:11:11,471 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 286 transitions, 3326 flow [2024-06-14 13:11:11,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:11,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:11:11,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:11:11,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 13:11:11,472 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:11:11,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:11:11,472 INFO L85 PathProgramCache]: Analyzing trace with hash -420590334, now seen corresponding path program 7 times [2024-06-14 13:11:11,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:11:11,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462868920] [2024-06-14 13:11:11,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:11:11,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:11:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:11:12,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:11:12,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:11:12,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462868920] [2024-06-14 13:11:12,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462868920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:11:12,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:11:12,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:11:12,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950788931] [2024-06-14 13:11:12,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:11:12,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:11:12,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:11:12,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:11:12,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:11:12,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:11:12,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 286 transitions, 3326 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:12,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:11:12,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:11:12,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:13,811 INFO L124 PetriNetUnfolderBase]: 2737/4382 cut-off events. [2024-06-14 13:11:13,811 INFO L125 PetriNetUnfolderBase]: For 285375/285375 co-relation queries the response was YES. [2024-06-14 13:11:13,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34803 conditions, 4382 events. 2737/4382 cut-off events. For 285375/285375 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 25846 event pairs, 564 based on Foata normal form. 16/4396 useless extension candidates. Maximal degree in co-relation 34685. Up to 3932 conditions per place. [2024-06-14 13:11:13,860 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 262 selfloop transitions, 58 changer transitions 0/325 dead transitions. [2024-06-14 13:11:13,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 325 transitions, 4150 flow [2024-06-14 13:11:13,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:11:13,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:11:13,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-06-14 13:11:13,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-14 13:11:13,862 INFO L175 Difference]: Start difference. First operand has 246 places, 286 transitions, 3326 flow. Second operand 11 states and 209 transitions. [2024-06-14 13:11:13,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 325 transitions, 4150 flow [2024-06-14 13:11:14,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 325 transitions, 4023 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 13:11:14,270 INFO L231 Difference]: Finished difference. Result has 249 places, 287 transitions, 3377 flow [2024-06-14 13:11:14,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3199, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3377, PETRI_PLACES=249, PETRI_TRANSITIONS=287} [2024-06-14 13:11:14,270 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 206 predicate places. [2024-06-14 13:11:14,271 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 287 transitions, 3377 flow [2024-06-14 13:11:14,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:14,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:11:14,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:11:14,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 13:11:14,271 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:11:14,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:11:14,272 INFO L85 PathProgramCache]: Analyzing trace with hash -420323424, now seen corresponding path program 8 times [2024-06-14 13:11:14,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:11:14,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015239887] [2024-06-14 13:11:14,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:11:14,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:11:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:11:15,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:11:15,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:11:15,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015239887] [2024-06-14 13:11:15,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015239887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:11:15,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:11:15,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:11:15,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467750331] [2024-06-14 13:11:15,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:11:15,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:11:15,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:11:15,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:11:15,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:11:15,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:11:15,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 287 transitions, 3377 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:15,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:11:15,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:11:15,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:16,394 INFO L124 PetriNetUnfolderBase]: 2905/4672 cut-off events. [2024-06-14 13:11:16,395 INFO L125 PetriNetUnfolderBase]: For 317513/317513 co-relation queries the response was YES. [2024-06-14 13:11:16,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37808 conditions, 4672 events. 2905/4672 cut-off events. For 317513/317513 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 28133 event pairs, 616 based on Foata normal form. 12/4680 useless extension candidates. Maximal degree in co-relation 37689. Up to 3894 conditions per place. [2024-06-14 13:11:16,453 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 260 selfloop transitions, 65 changer transitions 0/330 dead transitions. [2024-06-14 13:11:16,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 330 transitions, 4521 flow [2024-06-14 13:11:16,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:11:16,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:11:16,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-14 13:11:16,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-14 13:11:16,455 INFO L175 Difference]: Start difference. First operand has 249 places, 287 transitions, 3377 flow. Second operand 10 states and 196 transitions. [2024-06-14 13:11:16,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 330 transitions, 4521 flow [2024-06-14 13:11:16,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 330 transitions, 4387 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-14 13:11:16,872 INFO L231 Difference]: Finished difference. Result has 251 places, 290 transitions, 3525 flow [2024-06-14 13:11:16,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3243, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3525, PETRI_PLACES=251, PETRI_TRANSITIONS=290} [2024-06-14 13:11:16,873 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 208 predicate places. [2024-06-14 13:11:16,873 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 290 transitions, 3525 flow [2024-06-14 13:11:16,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:16,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:11:16,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:11:16,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 13:11:16,873 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:11:16,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:11:16,874 INFO L85 PathProgramCache]: Analyzing trace with hash -496007852, now seen corresponding path program 9 times [2024-06-14 13:11:16,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:11:16,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544773351] [2024-06-14 13:11:16,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:11:16,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:11:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:11:18,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:11:18,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:11:18,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544773351] [2024-06-14 13:11:18,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544773351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:11:18,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:11:18,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:11:18,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274588166] [2024-06-14 13:11:18,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:11:18,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:11:18,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:11:18,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:11:18,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:11:18,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:11:18,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 290 transitions, 3525 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:18,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:11:18,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:11:18,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:19,599 INFO L124 PetriNetUnfolderBase]: 2877/4632 cut-off events. [2024-06-14 13:11:19,600 INFO L125 PetriNetUnfolderBase]: For 310500/310500 co-relation queries the response was YES. [2024-06-14 13:11:19,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36848 conditions, 4632 events. 2877/4632 cut-off events. For 310500/310500 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 27902 event pairs, 604 based on Foata normal form. 16/4646 useless extension candidates. Maximal degree in co-relation 36727. Up to 3994 conditions per place. [2024-06-14 13:11:19,661 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 241 selfloop transitions, 86 changer transitions 0/332 dead transitions. [2024-06-14 13:11:19,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 332 transitions, 4323 flow [2024-06-14 13:11:19,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 13:11:19,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 13:11:19,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 226 transitions. [2024-06-14 13:11:19,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44841269841269843 [2024-06-14 13:11:19,662 INFO L175 Difference]: Start difference. First operand has 251 places, 290 transitions, 3525 flow. Second operand 12 states and 226 transitions. [2024-06-14 13:11:19,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 332 transitions, 4323 flow [2024-06-14 13:11:20,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 332 transitions, 4187 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-14 13:11:20,232 INFO L231 Difference]: Finished difference. Result has 257 places, 290 transitions, 3574 flow [2024-06-14 13:11:20,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3389, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3574, PETRI_PLACES=257, PETRI_TRANSITIONS=290} [2024-06-14 13:11:20,233 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 214 predicate places. [2024-06-14 13:11:20,233 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 290 transitions, 3574 flow [2024-06-14 13:11:20,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:20,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:11:20,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:11:20,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 13:11:20,233 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:11:20,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:11:20,234 INFO L85 PathProgramCache]: Analyzing trace with hash -627243774, now seen corresponding path program 10 times [2024-06-14 13:11:20,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:11:20,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858279423] [2024-06-14 13:11:20,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:11:20,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:11:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:11:21,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:11:21,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:11:21,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858279423] [2024-06-14 13:11:21,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858279423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:11:21,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:11:21,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:11:21,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085872524] [2024-06-14 13:11:21,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:11:21,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:11:21,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:11:21,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:11:21,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:11:21,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:11:21,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 290 transitions, 3574 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:21,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:11:21,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:11:21,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:22,516 INFO L124 PetriNetUnfolderBase]: 2849/4588 cut-off events. [2024-06-14 13:11:22,516 INFO L125 PetriNetUnfolderBase]: For 290555/290555 co-relation queries the response was YES. [2024-06-14 13:11:22,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35688 conditions, 4588 events. 2849/4588 cut-off events. For 290555/290555 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 27584 event pairs, 593 based on Foata normal form. 16/4602 useless extension candidates. Maximal degree in co-relation 35565. Up to 4173 conditions per place. [2024-06-14 13:11:22,677 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 271 selfloop transitions, 48 changer transitions 0/324 dead transitions. [2024-06-14 13:11:22,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 324 transitions, 4336 flow [2024-06-14 13:11:22,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:11:22,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:11:22,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-14 13:11:22,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-14 13:11:22,679 INFO L175 Difference]: Start difference. First operand has 257 places, 290 transitions, 3574 flow. Second operand 10 states and 189 transitions. [2024-06-14 13:11:22,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 324 transitions, 4336 flow [2024-06-14 13:11:23,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 324 transitions, 4140 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-14 13:11:23,109 INFO L231 Difference]: Finished difference. Result has 256 places, 290 transitions, 3481 flow [2024-06-14 13:11:23,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3378, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3481, PETRI_PLACES=256, PETRI_TRANSITIONS=290} [2024-06-14 13:11:23,109 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 213 predicate places. [2024-06-14 13:11:23,109 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 290 transitions, 3481 flow [2024-06-14 13:11:23,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:23,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:11:23,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:11:23,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 13:11:23,110 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:11:23,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:11:23,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1825391422, now seen corresponding path program 11 times [2024-06-14 13:11:23,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:11:23,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128501432] [2024-06-14 13:11:23,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:11:23,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:11:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:11:24,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:11:24,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:11:24,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128501432] [2024-06-14 13:11:24,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128501432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:11:24,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:11:24,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:11:24,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566037637] [2024-06-14 13:11:24,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:11:24,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:11:24,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:11:24,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:11:24,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:11:24,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:11:24,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 290 transitions, 3481 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:24,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:11:24,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:11:24,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:25,391 INFO L124 PetriNetUnfolderBase]: 2988/4829 cut-off events. [2024-06-14 13:11:25,391 INFO L125 PetriNetUnfolderBase]: For 291457/291457 co-relation queries the response was YES. [2024-06-14 13:11:25,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36613 conditions, 4829 events. 2988/4829 cut-off events. For 291457/291457 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 29257 event pairs, 512 based on Foata normal form. 12/4837 useless extension candidates. Maximal degree in co-relation 36489. Up to 3151 conditions per place. [2024-06-14 13:11:25,442 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 221 selfloop transitions, 107 changer transitions 0/333 dead transitions. [2024-06-14 13:11:25,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 333 transitions, 4425 flow [2024-06-14 13:11:25,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:11:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:11:25,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-14 13:11:25,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2024-06-14 13:11:25,443 INFO L175 Difference]: Start difference. First operand has 256 places, 290 transitions, 3481 flow. Second operand 10 states and 194 transitions. [2024-06-14 13:11:25,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 333 transitions, 4425 flow [2024-06-14 13:11:25,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 333 transitions, 4326 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 13:11:25,868 INFO L231 Difference]: Finished difference. Result has 259 places, 294 transitions, 3778 flow [2024-06-14 13:11:25,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3382, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3778, PETRI_PLACES=259, PETRI_TRANSITIONS=294} [2024-06-14 13:11:25,869 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 216 predicate places. [2024-06-14 13:11:25,869 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 294 transitions, 3778 flow [2024-06-14 13:11:25,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:25,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:11:25,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:11:25,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 13:11:25,870 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)] === [2024-06-14 13:11:25,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:11:25,872 INFO L85 PathProgramCache]: Analyzing trace with hash 2064304328, now seen corresponding path program 1 times [2024-06-14 13:11:25,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:11:25,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326994187] [2024-06-14 13:11:25,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:11:25,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:11:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:11:26,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:11:26,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:11:26,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326994187] [2024-06-14 13:11:26,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326994187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:11:26,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:11:26,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:11:26,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256317580] [2024-06-14 13:11:26,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:11:26,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:11:26,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:11:26,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:11:26,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:11:26,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:11:26,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 294 transitions, 3778 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:11:26,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:11:26,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:11:26,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:27,793 INFO L124 PetriNetUnfolderBase]: 2993/4844 cut-off events. [2024-06-14 13:11:27,793 INFO L125 PetriNetUnfolderBase]: For 285643/285643 co-relation queries the response was YES. [2024-06-14 13:11:27,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37443 conditions, 4844 events. 2993/4844 cut-off events. For 285643/285643 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 29609 event pairs, 635 based on Foata normal form. 1/4844 useless extension candidates. Maximal degree in co-relation 37317. Up to 4611 conditions per place. [2024-06-14 13:11:27,842 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 279 selfloop transitions, 36 changer transitions 0/320 dead transitions. [2024-06-14 13:11:27,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 320 transitions, 4702 flow [2024-06-14 13:11:27,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:11:27,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:11:27,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-14 13:11:27,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-14 13:11:27,844 INFO L175 Difference]: Start difference. First operand has 259 places, 294 transitions, 3778 flow. Second operand 8 states and 148 transitions. [2024-06-14 13:11:27,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 320 transitions, 4702 flow [2024-06-14 13:11:28,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 320 transitions, 4468 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-14 13:11:28,339 INFO L231 Difference]: Finished difference. Result has 260 places, 300 transitions, 3756 flow [2024-06-14 13:11:28,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3544, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3756, PETRI_PLACES=260, PETRI_TRANSITIONS=300} [2024-06-14 13:11:28,340 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 217 predicate places. [2024-06-14 13:11:28,340 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 300 transitions, 3756 flow [2024-06-14 13:11:28,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:11:28,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:11:28,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:11:28,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 13:11:28,341 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:11:28,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:11:28,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1970352599, now seen corresponding path program 1 times [2024-06-14 13:11:28,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:11:28,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989662757] [2024-06-14 13:11:28,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:11:28,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:11:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:11:29,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:11:29,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:11:29,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989662757] [2024-06-14 13:11:29,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989662757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:11:29,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:11:29,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:11:29,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233392602] [2024-06-14 13:11:29,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:11:29,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:11:29,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:11:29,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:11:29,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:11:29,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:11:29,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 300 transitions, 3756 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:11:29,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:11:29,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:11:29,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:30,009 INFO L124 PetriNetUnfolderBase]: 3119/5023 cut-off events. [2024-06-14 13:11:30,010 INFO L125 PetriNetUnfolderBase]: For 321213/321213 co-relation queries the response was YES. [2024-06-14 13:11:30,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39593 conditions, 5023 events. 3119/5023 cut-off events. For 321213/321213 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 30782 event pairs, 639 based on Foata normal form. 6/5027 useless extension candidates. Maximal degree in co-relation 39466. Up to 4310 conditions per place. [2024-06-14 13:11:30,169 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 247 selfloop transitions, 87 changer transitions 0/339 dead transitions. [2024-06-14 13:11:30,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 339 transitions, 5126 flow [2024-06-14 13:11:30,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:11:30,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:11:30,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-14 13:11:30,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-14 13:11:30,170 INFO L175 Difference]: Start difference. First operand has 260 places, 300 transitions, 3756 flow. Second operand 8 states and 162 transitions. [2024-06-14 13:11:30,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 339 transitions, 5126 flow [2024-06-14 13:11:30,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 339 transitions, 5023 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-06-14 13:11:30,621 INFO L231 Difference]: Finished difference. Result has 265 places, 311 transitions, 4097 flow [2024-06-14 13:11:30,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3653, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4097, PETRI_PLACES=265, PETRI_TRANSITIONS=311} [2024-06-14 13:11:30,622 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 222 predicate places. [2024-06-14 13:11:30,622 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 311 transitions, 4097 flow [2024-06-14 13:11:30,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:11:30,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:11:30,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:11:30,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 13:11:30,623 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:11:30,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:11:30,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1970352754, now seen corresponding path program 2 times [2024-06-14 13:11:30,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:11:30,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465995280] [2024-06-14 13:11:30,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:11:30,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:11:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:11:31,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:11:31,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:11:31,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465995280] [2024-06-14 13:11:31,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465995280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:11:31,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:11:31,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:11:31,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232543391] [2024-06-14 13:11:31,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:11:31,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:11:31,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:11:31,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:11:31,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:11:31,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:11:31,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 311 transitions, 4097 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:11:31,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:11:31,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:11:31,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:32,644 INFO L124 PetriNetUnfolderBase]: 3124/5034 cut-off events. [2024-06-14 13:11:32,645 INFO L125 PetriNetUnfolderBase]: For 328236/328236 co-relation queries the response was YES. [2024-06-14 13:11:32,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40752 conditions, 5034 events. 3124/5034 cut-off events. For 328236/328236 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 30876 event pairs, 650 based on Foata normal form. 1/5034 useless extension candidates. Maximal degree in co-relation 40622. Up to 4810 conditions per place. [2024-06-14 13:11:32,706 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 294 selfloop transitions, 31 changer transitions 0/330 dead transitions. [2024-06-14 13:11:32,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 330 transitions, 4845 flow [2024-06-14 13:11:32,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:11:32,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:11:32,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-14 13:11:32,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255952380952381 [2024-06-14 13:11:32,707 INFO L175 Difference]: Start difference. First operand has 265 places, 311 transitions, 4097 flow. Second operand 8 states and 143 transitions. [2024-06-14 13:11:32,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 330 transitions, 4845 flow [2024-06-14 13:11:33,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 330 transitions, 4686 flow, removed 52 selfloop flow, removed 3 redundant places. [2024-06-14 13:11:33,251 INFO L231 Difference]: Finished difference. Result has 270 places, 314 transitions, 4070 flow [2024-06-14 13:11:33,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3938, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4070, PETRI_PLACES=270, PETRI_TRANSITIONS=314} [2024-06-14 13:11:33,252 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 227 predicate places. [2024-06-14 13:11:33,252 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 314 transitions, 4070 flow [2024-06-14 13:11:33,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:11:33,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:11:33,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:11:33,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 13:11:33,253 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:11:33,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:11:33,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1966627949, now seen corresponding path program 2 times [2024-06-14 13:11:33,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:11:33,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891744003] [2024-06-14 13:11:33,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:11:33,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:11:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:11:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:11:34,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:11:34,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891744003] [2024-06-14 13:11:34,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891744003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:11:34,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:11:34,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:11:34,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343889579] [2024-06-14 13:11:34,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:11:34,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:11:34,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:11:34,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:11:34,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:11:34,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:11:34,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 314 transitions, 4070 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:11:34,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:11:34,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:11:34,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:35,343 INFO L124 PetriNetUnfolderBase]: 3250/5216 cut-off events. [2024-06-14 13:11:35,343 INFO L125 PetriNetUnfolderBase]: For 366472/366472 co-relation queries the response was YES. [2024-06-14 13:11:35,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42896 conditions, 5216 events. 3250/5216 cut-off events. For 366472/366472 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 32186 event pairs, 655 based on Foata normal form. 6/5219 useless extension candidates. Maximal degree in co-relation 42764. Up to 4667 conditions per place. [2024-06-14 13:11:35,411 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 277 selfloop transitions, 74 changer transitions 0/356 dead transitions. [2024-06-14 13:11:35,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 356 transitions, 5510 flow [2024-06-14 13:11:35,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:11:35,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:11:35,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-14 13:11:35,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-14 13:11:35,413 INFO L175 Difference]: Start difference. First operand has 270 places, 314 transitions, 4070 flow. Second operand 10 states and 192 transitions. [2024-06-14 13:11:35,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 356 transitions, 5510 flow [2024-06-14 13:11:36,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 356 transitions, 5406 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-14 13:11:36,046 INFO L231 Difference]: Finished difference. Result has 275 places, 326 transitions, 4396 flow [2024-06-14 13:11:36,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3966, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4396, PETRI_PLACES=275, PETRI_TRANSITIONS=326} [2024-06-14 13:11:36,047 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 232 predicate places. [2024-06-14 13:11:36,047 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 326 transitions, 4396 flow [2024-06-14 13:11:36,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:11:36,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:11:36,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:11:36,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 13:11:36,048 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:11:36,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:11:36,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1025127573, now seen corresponding path program 3 times [2024-06-14 13:11:36,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:11:36,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370037632] [2024-06-14 13:11:36,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:11:36,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:11:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:11:36,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:11:36,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:11:36,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370037632] [2024-06-14 13:11:36,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370037632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:11:36,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:11:36,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:11:36,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523632042] [2024-06-14 13:11:36,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:11:36,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:11:36,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:11:36,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:11:36,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:11:36,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:11:36,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 326 transitions, 4396 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:11:36,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:11:36,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:11:36,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:37,919 INFO L124 PetriNetUnfolderBase]: 3240/5200 cut-off events. [2024-06-14 13:11:37,920 INFO L125 PetriNetUnfolderBase]: For 369955/369955 co-relation queries the response was YES. [2024-06-14 13:11:37,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43059 conditions, 5200 events. 3240/5200 cut-off events. For 369955/369955 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 31947 event pairs, 651 based on Foata normal form. 6/5204 useless extension candidates. Maximal degree in co-relation 42925. Up to 4664 conditions per place. [2024-06-14 13:11:37,987 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 278 selfloop transitions, 67 changer transitions 0/350 dead transitions. [2024-06-14 13:11:37,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 350 transitions, 5400 flow [2024-06-14 13:11:37,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:11:37,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:11:37,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-14 13:11:37,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-14 13:11:37,989 INFO L175 Difference]: Start difference. First operand has 275 places, 326 transitions, 4396 flow. Second operand 8 states and 157 transitions. [2024-06-14 13:11:37,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 350 transitions, 5400 flow [2024-06-14 13:11:38,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 350 transitions, 5139 flow, removed 73 selfloop flow, removed 6 redundant places. [2024-06-14 13:11:38,730 INFO L231 Difference]: Finished difference. Result has 277 places, 326 transitions, 4277 flow [2024-06-14 13:11:38,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4135, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4277, PETRI_PLACES=277, PETRI_TRANSITIONS=326} [2024-06-14 13:11:38,730 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 234 predicate places. [2024-06-14 13:11:38,730 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 326 transitions, 4277 flow [2024-06-14 13:11:38,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:11:38,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:11:38,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:11:38,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 13:11:38,731 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)] === [2024-06-14 13:11:38,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:11:38,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1966633684, now seen corresponding path program 3 times [2024-06-14 13:11:38,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:11:38,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729967779] [2024-06-14 13:11:38,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:11:38,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:11:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:11:39,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:11:39,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:11:39,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729967779] [2024-06-14 13:11:39,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729967779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:11:39,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:11:39,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:11:39,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997634294] [2024-06-14 13:11:39,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:11:39,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:11:39,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:11:39,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:11:39,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:11:39,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:11:39,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 326 transitions, 4277 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:11:39,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:11:39,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:11:39,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:40,765 INFO L124 PetriNetUnfolderBase]: 3245/5215 cut-off events. [2024-06-14 13:11:40,765 INFO L125 PetriNetUnfolderBase]: For 367346/367346 co-relation queries the response was YES. [2024-06-14 13:11:40,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42820 conditions, 5215 events. 3245/5215 cut-off events. For 367346/367346 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 32115 event pairs, 670 based on Foata normal form. 1/5215 useless extension candidates. Maximal degree in co-relation 42685. Up to 4994 conditions per place. [2024-06-14 13:11:40,830 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 314 selfloop transitions, 23 changer transitions 0/342 dead transitions. [2024-06-14 13:11:40,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 342 transitions, 5047 flow [2024-06-14 13:11:40,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:11:40,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:11:40,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-14 13:11:40,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-06-14 13:11:40,832 INFO L175 Difference]: Start difference. First operand has 277 places, 326 transitions, 4277 flow. Second operand 8 states and 139 transitions. [2024-06-14 13:11:40,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 342 transitions, 5047 flow [2024-06-14 13:11:41,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 342 transitions, 4907 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-14 13:11:41,555 INFO L231 Difference]: Finished difference. Result has 277 places, 329 transitions, 4259 flow [2024-06-14 13:11:41,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4137, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4259, PETRI_PLACES=277, PETRI_TRANSITIONS=329} [2024-06-14 13:11:41,556 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 234 predicate places. [2024-06-14 13:11:41,556 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 329 transitions, 4259 flow [2024-06-14 13:11:41,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:11:41,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:11:41,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:11:41,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 13:11:41,556 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)] === [2024-06-14 13:11:41,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:11:41,557 INFO L85 PathProgramCache]: Analyzing trace with hash 38622039, now seen corresponding path program 4 times [2024-06-14 13:11:41,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:11:41,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132537361] [2024-06-14 13:11:41,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:11:41,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:11:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:11:42,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:11:42,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:11:42,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132537361] [2024-06-14 13:11:42,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132537361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:11:42,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:11:42,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:11:42,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232375787] [2024-06-14 13:11:42,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:11:42,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:11:42,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:11:42,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:11:42,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:11:42,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:11:42,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 329 transitions, 4259 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:11:42,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:11:42,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:11:42,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:43,444 INFO L124 PetriNetUnfolderBase]: 3275/5241 cut-off events. [2024-06-14 13:11:43,444 INFO L125 PetriNetUnfolderBase]: For 387761/387761 co-relation queries the response was YES. [2024-06-14 13:11:43,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43119 conditions, 5241 events. 3275/5241 cut-off events. For 387761/387761 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 32163 event pairs, 668 based on Foata normal form. 6/5245 useless extension candidates. Maximal degree in co-relation 42983. Up to 4980 conditions per place. [2024-06-14 13:11:43,509 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 317 selfloop transitions, 24 changer transitions 0/346 dead transitions. [2024-06-14 13:11:43,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 346 transitions, 5119 flow [2024-06-14 13:11:43,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:11:43,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:11:43,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-14 13:11:43,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421768707482993 [2024-06-14 13:11:43,510 INFO L175 Difference]: Start difference. First operand has 277 places, 329 transitions, 4259 flow. Second operand 7 states and 130 transitions. [2024-06-14 13:11:43,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 346 transitions, 5119 flow [2024-06-14 13:11:44,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 346 transitions, 5025 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-14 13:11:44,216 INFO L231 Difference]: Finished difference. Result has 278 places, 333 transitions, 4316 flow [2024-06-14 13:11:44,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4165, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4316, PETRI_PLACES=278, PETRI_TRANSITIONS=333} [2024-06-14 13:11:44,226 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 235 predicate places. [2024-06-14 13:11:44,226 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 333 transitions, 4316 flow [2024-06-14 13:11:44,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:11:44,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:11:44,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:11:44,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 13:11:44,227 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)] === [2024-06-14 13:11:44,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:11:44,227 INFO L85 PathProgramCache]: Analyzing trace with hash 38889166, now seen corresponding path program 1 times [2024-06-14 13:11:44,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:11:44,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839868036] [2024-06-14 13:11:44,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:11:44,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:11:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:11:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:11:45,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:11:45,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839868036] [2024-06-14 13:11:45,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839868036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:11:45,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:11:45,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:11:45,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417512004] [2024-06-14 13:11:45,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:11:45,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:11:45,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:11:45,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:11:45,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:11:45,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:11:45,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 333 transitions, 4316 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:11:45,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:11:45,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:11:45,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:46,315 INFO L124 PetriNetUnfolderBase]: 3287/5272 cut-off events. [2024-06-14 13:11:46,315 INFO L125 PetriNetUnfolderBase]: For 394396/394396 co-relation queries the response was YES. [2024-06-14 13:11:46,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43507 conditions, 5272 events. 3287/5272 cut-off events. For 394396/394396 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 32549 event pairs, 686 based on Foata normal form. 4/5272 useless extension candidates. Maximal degree in co-relation 43370. Up to 4960 conditions per place. [2024-06-14 13:11:46,372 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 310 selfloop transitions, 34 changer transitions 0/349 dead transitions. [2024-06-14 13:11:46,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 349 transitions, 5168 flow [2024-06-14 13:11:46,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:11:46,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:11:46,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-06-14 13:11:46,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-14 13:11:46,374 INFO L175 Difference]: Start difference. First operand has 278 places, 333 transitions, 4316 flow. Second operand 6 states and 117 transitions. [2024-06-14 13:11:46,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 349 transitions, 5168 flow [2024-06-14 13:11:47,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 349 transitions, 5053 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-14 13:11:47,055 INFO L231 Difference]: Finished difference. Result has 279 places, 337 transitions, 4374 flow [2024-06-14 13:11:47,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4201, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4374, PETRI_PLACES=279, PETRI_TRANSITIONS=337} [2024-06-14 13:11:47,056 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 236 predicate places. [2024-06-14 13:11:47,056 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 337 transitions, 4374 flow [2024-06-14 13:11:47,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:11:47,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:11:47,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:11:47,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 13:11:47,056 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:11:47,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:11:47,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1641451281, now seen corresponding path program 5 times [2024-06-14 13:11:47,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:11:47,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967195212] [2024-06-14 13:11:47,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:11:47,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:11:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:11:47,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:11:47,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:11:47,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967195212] [2024-06-14 13:11:47,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967195212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:11:47,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:11:47,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:11:47,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132925635] [2024-06-14 13:11:47,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:11:47,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:11:47,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:11:47,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:11:47,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:11:47,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:11:47,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 337 transitions, 4374 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:11:47,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:11:47,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:11:47,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:48,914 INFO L124 PetriNetUnfolderBase]: 3349/5370 cut-off events. [2024-06-14 13:11:48,915 INFO L125 PetriNetUnfolderBase]: For 420204/420204 co-relation queries the response was YES. [2024-06-14 13:11:48,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45136 conditions, 5370 events. 3349/5370 cut-off events. For 420204/420204 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 33200 event pairs, 688 based on Foata normal form. 6/5374 useless extension candidates. Maximal degree in co-relation 44998. Up to 4749 conditions per place. [2024-06-14 13:11:48,984 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 286 selfloop transitions, 77 changer transitions 0/368 dead transitions. [2024-06-14 13:11:48,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 368 transitions, 5748 flow [2024-06-14 13:11:48,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:11:48,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:11:48,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-14 13:11:48,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2024-06-14 13:11:48,985 INFO L175 Difference]: Start difference. First operand has 279 places, 337 transitions, 4374 flow. Second operand 7 states and 141 transitions. [2024-06-14 13:11:48,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 368 transitions, 5748 flow [2024-06-14 13:11:49,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 368 transitions, 5618 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-14 13:11:49,700 INFO L231 Difference]: Finished difference. Result has 282 places, 346 transitions, 4701 flow [2024-06-14 13:11:49,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4248, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4701, PETRI_PLACES=282, PETRI_TRANSITIONS=346} [2024-06-14 13:11:49,701 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 239 predicate places. [2024-06-14 13:11:49,701 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 346 transitions, 4701 flow [2024-06-14 13:11:49,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:11:49,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:11:49,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:11:49,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 13:11:49,701 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:11:49,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:11:49,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1641457016, now seen corresponding path program 4 times [2024-06-14 13:11:49,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:11:49,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056330435] [2024-06-14 13:11:49,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:11:49,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:11:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:11:50,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:11:50,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:11:50,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056330435] [2024-06-14 13:11:50,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056330435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:11:50,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:11:50,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:11:50,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659432884] [2024-06-14 13:11:50,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:11:50,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:11:50,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:11:50,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:11:50,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:11:50,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:11:50,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 346 transitions, 4701 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:11:50,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:11:50,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:11:50,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:51,705 INFO L124 PetriNetUnfolderBase]: 3346/5360 cut-off events. [2024-06-14 13:11:51,705 INFO L125 PetriNetUnfolderBase]: For 410526/410526 co-relation queries the response was YES. [2024-06-14 13:11:51,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45441 conditions, 5360 events. 3346/5360 cut-off events. For 410526/410526 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 33108 event pairs, 682 based on Foata normal form. 1/5360 useless extension candidates. Maximal degree in co-relation 45302. Up to 5120 conditions per place. [2024-06-14 13:11:51,777 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 333 selfloop transitions, 26 changer transitions 0/364 dead transitions. [2024-06-14 13:11:51,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 364 transitions, 5465 flow [2024-06-14 13:11:51,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:11:51,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:11:51,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-14 13:11:51,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-14 13:11:51,778 INFO L175 Difference]: Start difference. First operand has 282 places, 346 transitions, 4701 flow. Second operand 7 states and 133 transitions. [2024-06-14 13:11:51,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 364 transitions, 5465 flow [2024-06-14 13:11:52,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 364 transitions, 5268 flow, removed 77 selfloop flow, removed 4 redundant places. [2024-06-14 13:11:52,492 INFO L231 Difference]: Finished difference. Result has 285 places, 346 transitions, 4566 flow [2024-06-14 13:11:52,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4504, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4566, PETRI_PLACES=285, PETRI_TRANSITIONS=346} [2024-06-14 13:11:52,493 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 242 predicate places. [2024-06-14 13:11:52,493 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 346 transitions, 4566 flow [2024-06-14 13:11:52,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:11:52,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:11:52,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:11:52,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 13:11:52,493 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:11:52,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:11:52,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1641456861, now seen corresponding path program 6 times [2024-06-14 13:11:52,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:11:52,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065305445] [2024-06-14 13:11:52,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:11:52,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:11:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:11:53,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:11:53,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:11:53,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065305445] [2024-06-14 13:11:53,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065305445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:11:53,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:11:53,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:11:53,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219477179] [2024-06-14 13:11:53,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:11:53,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:11:53,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:11:53,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:11:53,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:11:53,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:11:53,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 346 transitions, 4566 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:11:53,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:11:53,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:11:53,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:54,385 INFO L124 PetriNetUnfolderBase]: 3336/5350 cut-off events. [2024-06-14 13:11:54,386 INFO L125 PetriNetUnfolderBase]: For 414424/414424 co-relation queries the response was YES. [2024-06-14 13:11:54,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44709 conditions, 5350 events. 3336/5350 cut-off events. For 414424/414424 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 33016 event pairs, 669 based on Foata normal form. 6/5354 useless extension candidates. Maximal degree in co-relation 44570. Up to 4742 conditions per place. [2024-06-14 13:11:54,460 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 284 selfloop transitions, 81 changer transitions 0/370 dead transitions. [2024-06-14 13:11:54,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 370 transitions, 5592 flow [2024-06-14 13:11:54,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:11:54,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:11:54,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-14 13:11:54,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48639455782312924 [2024-06-14 13:11:54,461 INFO L175 Difference]: Start difference. First operand has 285 places, 346 transitions, 4566 flow. Second operand 7 states and 143 transitions. [2024-06-14 13:11:54,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 370 transitions, 5592 flow [2024-06-14 13:11:55,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 370 transitions, 5464 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-14 13:11:55,417 INFO L231 Difference]: Finished difference. Result has 286 places, 346 transitions, 4608 flow [2024-06-14 13:11:55,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4438, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4608, PETRI_PLACES=286, PETRI_TRANSITIONS=346} [2024-06-14 13:11:55,417 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 243 predicate places. [2024-06-14 13:11:55,417 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 346 transitions, 4608 flow [2024-06-14 13:11:55,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:11:55,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:11:55,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:11:55,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 13:11:55,418 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:11:55,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:11:55,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1242990556, now seen corresponding path program 1 times [2024-06-14 13:11:55,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:11:55,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483450419] [2024-06-14 13:11:55,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:11:55,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:11:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:11:56,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:11:56,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:11:56,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483450419] [2024-06-14 13:11:56,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483450419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:11:56,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:11:56,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:11:56,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144092167] [2024-06-14 13:11:56,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:11:56,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:11:56,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:11:56,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:11:56,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:11:56,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:11:56,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 346 transitions, 4608 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:56,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:11:56,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:11:56,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:11:58,006 INFO L124 PetriNetUnfolderBase]: 3377/5419 cut-off events. [2024-06-14 13:11:58,006 INFO L125 PetriNetUnfolderBase]: For 436188/436188 co-relation queries the response was YES. [2024-06-14 13:11:58,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45507 conditions, 5419 events. 3377/5419 cut-off events. For 436188/436188 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 33614 event pairs, 662 based on Foata normal form. 12/5430 useless extension candidates. Maximal degree in co-relation 45367. Up to 5025 conditions per place. [2024-06-14 13:11:58,083 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 349 selfloop transitions, 30 changer transitions 0/384 dead transitions. [2024-06-14 13:11:58,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 384 transitions, 5532 flow [2024-06-14 13:11:58,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:11:58,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:11:58,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-14 13:11:58,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-14 13:11:58,085 INFO L175 Difference]: Start difference. First operand has 286 places, 346 transitions, 4608 flow. Second operand 10 states and 188 transitions. [2024-06-14 13:11:58,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 384 transitions, 5532 flow [2024-06-14 13:11:58,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 384 transitions, 5346 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-14 13:11:58,985 INFO L231 Difference]: Finished difference. Result has 291 places, 347 transitions, 4546 flow [2024-06-14 13:11:58,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4422, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4546, PETRI_PLACES=291, PETRI_TRANSITIONS=347} [2024-06-14 13:11:58,985 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 248 predicate places. [2024-06-14 13:11:58,986 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 347 transitions, 4546 flow [2024-06-14 13:11:58,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:11:58,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:11:58,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:11:58,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 13:11:58,986 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:11:58,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:11:58,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1595150382, now seen corresponding path program 2 times [2024-06-14 13:11:58,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:11:58,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389166757] [2024-06-14 13:11:58,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:11:58,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:11:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:11:59,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:11:59,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:11:59,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389166757] [2024-06-14 13:11:59,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389166757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:11:59,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:11:59,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:11:59,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37498160] [2024-06-14 13:11:59,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:11:59,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:11:59,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:11:59,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:11:59,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:12:00,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:12:00,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 347 transitions, 4546 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:12:00,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:12:00,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:12:00,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:12:01,295 INFO L124 PetriNetUnfolderBase]: 3418/5504 cut-off events. [2024-06-14 13:12:01,295 INFO L125 PetriNetUnfolderBase]: For 450338/450338 co-relation queries the response was YES. [2024-06-14 13:12:01,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45951 conditions, 5504 events. 3418/5504 cut-off events. For 450338/450338 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 34250 event pairs, 671 based on Foata normal form. 12/5515 useless extension candidates. Maximal degree in co-relation 45810. Up to 5114 conditions per place. [2024-06-14 13:12:01,369 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 364 selfloop transitions, 20 changer transitions 0/389 dead transitions. [2024-06-14 13:12:01,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 389 transitions, 5494 flow [2024-06-14 13:12:01,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:12:01,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:12:01,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-14 13:12:01,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-14 13:12:01,370 INFO L175 Difference]: Start difference. First operand has 291 places, 347 transitions, 4546 flow. Second operand 10 states and 188 transitions. [2024-06-14 13:12:01,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 389 transitions, 5494 flow [2024-06-14 13:12:02,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 389 transitions, 5396 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-14 13:12:02,359 INFO L231 Difference]: Finished difference. Result has 293 places, 348 transitions, 4554 flow [2024-06-14 13:12:02,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4448, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4554, PETRI_PLACES=293, PETRI_TRANSITIONS=348} [2024-06-14 13:12:02,361 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 250 predicate places. [2024-06-14 13:12:02,361 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 348 transitions, 4554 flow [2024-06-14 13:12:02,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:12:02,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:12:02,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:12:02,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 13:12:02,362 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:12:02,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:12:02,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1150388178, now seen corresponding path program 3 times [2024-06-14 13:12:02,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:12:02,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342128022] [2024-06-14 13:12:02,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:12:02,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:12:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:12:03,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:12:03,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:12:03,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342128022] [2024-06-14 13:12:03,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342128022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:12:03,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:12:03,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:12:03,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9488100] [2024-06-14 13:12:03,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:12:03,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:12:03,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:12:03,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:12:03,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:12:03,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:12:03,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 348 transitions, 4554 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:12:03,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:12:03,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:12:03,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:12:04,927 INFO L124 PetriNetUnfolderBase]: 3459/5575 cut-off events. [2024-06-14 13:12:04,928 INFO L125 PetriNetUnfolderBase]: For 462755/462755 co-relation queries the response was YES. [2024-06-14 13:12:04,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46463 conditions, 5575 events. 3459/5575 cut-off events. For 462755/462755 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 34848 event pairs, 700 based on Foata normal form. 12/5586 useless extension candidates. Maximal degree in co-relation 46321. Up to 5184 conditions per place. [2024-06-14 13:12:05,002 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 359 selfloop transitions, 25 changer transitions 0/389 dead transitions. [2024-06-14 13:12:05,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 389 transitions, 5502 flow [2024-06-14 13:12:05,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:12:05,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:12:05,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-14 13:12:05,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-14 13:12:05,004 INFO L175 Difference]: Start difference. First operand has 293 places, 348 transitions, 4554 flow. Second operand 10 states and 190 transitions. [2024-06-14 13:12:05,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 389 transitions, 5502 flow [2024-06-14 13:12:05,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 389 transitions, 5422 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-14 13:12:05,986 INFO L231 Difference]: Finished difference. Result has 295 places, 349 transitions, 4592 flow [2024-06-14 13:12:05,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4474, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4592, PETRI_PLACES=295, PETRI_TRANSITIONS=349} [2024-06-14 13:12:05,987 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 252 predicate places. [2024-06-14 13:12:05,987 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 349 transitions, 4592 flow [2024-06-14 13:12:05,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:12:05,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:12:05,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:12:05,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 13:12:05,988 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)] === [2024-06-14 13:12:05,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:12:05,988 INFO L85 PathProgramCache]: Analyzing trace with hash 569828157, now seen corresponding path program 1 times [2024-06-14 13:12:05,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:12:05,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39390226] [2024-06-14 13:12:05,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:12:05,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:12:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:12:06,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:12:06,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:12:06,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39390226] [2024-06-14 13:12:06,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39390226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:12:06,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:12:06,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:12:06,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791583046] [2024-06-14 13:12:06,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:12:06,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:12:06,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:12:06,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:12:06,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:12:06,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:12:06,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 349 transitions, 4592 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:12:06,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:12:06,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:12:06,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:12:07,971 INFO L124 PetriNetUnfolderBase]: 3533/5679 cut-off events. [2024-06-14 13:12:07,972 INFO L125 PetriNetUnfolderBase]: For 476240/476240 co-relation queries the response was YES. [2024-06-14 13:12:08,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48211 conditions, 5679 events. 3533/5679 cut-off events. For 476240/476240 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 35550 event pairs, 727 based on Foata normal form. 2/5680 useless extension candidates. Maximal degree in co-relation 48068. Up to 5297 conditions per place. [2024-06-14 13:12:08,048 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 329 selfloop transitions, 51 changer transitions 0/385 dead transitions. [2024-06-14 13:12:08,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 385 transitions, 5875 flow [2024-06-14 13:12:08,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:12:08,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:12:08,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-14 13:12:08,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-14 13:12:08,049 INFO L175 Difference]: Start difference. First operand has 295 places, 349 transitions, 4592 flow. Second operand 8 states and 161 transitions. [2024-06-14 13:12:08,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 385 transitions, 5875 flow [2024-06-14 13:12:09,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 385 transitions, 5783 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-14 13:12:09,090 INFO L231 Difference]: Finished difference. Result has 296 places, 359 transitions, 4908 flow [2024-06-14 13:12:09,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4500, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4908, PETRI_PLACES=296, PETRI_TRANSITIONS=359} [2024-06-14 13:12:09,091 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 253 predicate places. [2024-06-14 13:12:09,091 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 359 transitions, 4908 flow [2024-06-14 13:12:09,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:12:09,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:12:09,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:12:09,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 13:12:09,091 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)] === [2024-06-14 13:12:09,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:12:09,092 INFO L85 PathProgramCache]: Analyzing trace with hash 569948127, now seen corresponding path program 2 times [2024-06-14 13:12:09,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:12:09,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118998130] [2024-06-14 13:12:09,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:12:09,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:12:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:12:09,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:12:09,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:12:09,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118998130] [2024-06-14 13:12:09,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118998130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:12:09,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:12:09,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:12:09,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082436521] [2024-06-14 13:12:09,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:12:09,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:12:09,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:12:09,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:12:09,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:12:09,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:12:09,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 359 transitions, 4908 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:12:09,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:12:09,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:12:09,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:12:11,276 INFO L124 PetriNetUnfolderBase]: 3527/5669 cut-off events. [2024-06-14 13:12:11,276 INFO L125 PetriNetUnfolderBase]: For 479707/479707 co-relation queries the response was YES. [2024-06-14 13:12:11,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48151 conditions, 5669 events. 3527/5669 cut-off events. For 479707/479707 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 35502 event pairs, 729 based on Foata normal form. 2/5670 useless extension candidates. Maximal degree in co-relation 48006. Up to 5368 conditions per place. [2024-06-14 13:12:11,345 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 337 selfloop transitions, 38 changer transitions 0/380 dead transitions. [2024-06-14 13:12:11,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 380 transitions, 5749 flow [2024-06-14 13:12:11,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:12:11,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:12:11,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-14 13:12:11,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-14 13:12:11,347 INFO L175 Difference]: Start difference. First operand has 296 places, 359 transitions, 4908 flow. Second operand 8 states and 154 transitions. [2024-06-14 13:12:11,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 380 transitions, 5749 flow [2024-06-14 13:12:12,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 380 transitions, 5606 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-14 13:12:12,343 INFO L231 Difference]: Finished difference. Result has 299 places, 359 transitions, 4848 flow [2024-06-14 13:12:12,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4765, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4848, PETRI_PLACES=299, PETRI_TRANSITIONS=359} [2024-06-14 13:12:12,343 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 256 predicate places. [2024-06-14 13:12:12,343 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 359 transitions, 4848 flow [2024-06-14 13:12:12,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:12:12,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:12:12,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:12:12,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 13:12:12,344 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)] === [2024-06-14 13:12:12,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:12:12,344 INFO L85 PathProgramCache]: Analyzing trace with hash 747079647, now seen corresponding path program 3 times [2024-06-14 13:12:12,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:12:12,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943691034] [2024-06-14 13:12:12,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:12:12,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:12:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:12:12,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:12:12,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:12:12,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943691034] [2024-06-14 13:12:12,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943691034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:12:12,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:12:12,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:12:12,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326571720] [2024-06-14 13:12:12,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:12:12,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:12:12,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:12:12,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:12:12,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:12:13,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:12:13,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 359 transitions, 4848 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:12:13,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:12:13,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:12:13,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:12:14,345 INFO L124 PetriNetUnfolderBase]: 3552/5702 cut-off events. [2024-06-14 13:12:14,345 INFO L125 PetriNetUnfolderBase]: For 490166/490166 co-relation queries the response was YES. [2024-06-14 13:12:14,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48500 conditions, 5702 events. 3552/5702 cut-off events. For 490166/490166 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 35675 event pairs, 729 based on Foata normal form. 2/5703 useless extension candidates. Maximal degree in co-relation 48354. Up to 5440 conditions per place. [2024-06-14 13:12:14,413 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 352 selfloop transitions, 30 changer transitions 0/387 dead transitions. [2024-06-14 13:12:14,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 387 transitions, 5897 flow [2024-06-14 13:12:14,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:12:14,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:12:14,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-14 13:12:14,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-14 13:12:14,414 INFO L175 Difference]: Start difference. First operand has 299 places, 359 transitions, 4848 flow. Second operand 8 states and 147 transitions. [2024-06-14 13:12:14,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 387 transitions, 5897 flow [2024-06-14 13:12:15,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 387 transitions, 5787 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-14 13:12:15,489 INFO L231 Difference]: Finished difference. Result has 304 places, 370 transitions, 5041 flow [2024-06-14 13:12:15,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4748, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5041, PETRI_PLACES=304, PETRI_TRANSITIONS=370} [2024-06-14 13:12:15,490 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 261 predicate places. [2024-06-14 13:12:15,490 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 370 transitions, 5041 flow [2024-06-14 13:12:15,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:12:15,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:12:15,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:12:15,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 13:12:15,490 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:12:15,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:12:15,491 INFO L85 PathProgramCache]: Analyzing trace with hash -70788620, now seen corresponding path program 4 times [2024-06-14 13:12:15,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:12:15,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958386796] [2024-06-14 13:12:15,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:12:15,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:12:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:12:16,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:12:16,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:12:16,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958386796] [2024-06-14 13:12:16,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958386796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:12:16,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:12:16,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:12:16,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150450267] [2024-06-14 13:12:16,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:12:16,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:12:16,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:12:16,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:12:16,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:12:16,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:12:16,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 370 transitions, 5041 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:12:16,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:12:16,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:12:16,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:12:18,167 INFO L124 PetriNetUnfolderBase]: 3593/5779 cut-off events. [2024-06-14 13:12:18,167 INFO L125 PetriNetUnfolderBase]: For 525085/525085 co-relation queries the response was YES. [2024-06-14 13:12:18,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49219 conditions, 5779 events. 3593/5779 cut-off events. For 525085/525085 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 36306 event pairs, 738 based on Foata normal form. 12/5789 useless extension candidates. Maximal degree in co-relation 49071. Up to 5332 conditions per place. [2024-06-14 13:12:18,241 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 353 selfloop transitions, 47 changer transitions 0/405 dead transitions. [2024-06-14 13:12:18,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 405 transitions, 6005 flow [2024-06-14 13:12:18,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:12:18,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:12:18,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-14 13:12:18,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-14 13:12:18,243 INFO L175 Difference]: Start difference. First operand has 304 places, 370 transitions, 5041 flow. Second operand 10 states and 188 transitions. [2024-06-14 13:12:18,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 405 transitions, 6005 flow [2024-06-14 13:12:19,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 405 transitions, 5884 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-14 13:12:19,503 INFO L231 Difference]: Finished difference. Result has 310 places, 371 transitions, 5084 flow [2024-06-14 13:12:19,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4920, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5084, PETRI_PLACES=310, PETRI_TRANSITIONS=371} [2024-06-14 13:12:19,504 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 267 predicate places. [2024-06-14 13:12:19,504 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 371 transitions, 5084 flow [2024-06-14 13:12:19,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:12:19,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:12:19,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:12:19,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 13:12:19,505 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:12:19,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:12:19,505 INFO L85 PathProgramCache]: Analyzing trace with hash -75372590, now seen corresponding path program 5 times [2024-06-14 13:12:19,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:12:19,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539481391] [2024-06-14 13:12:19,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:12:19,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:12:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:12:20,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:12:20,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:12:20,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539481391] [2024-06-14 13:12:20,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539481391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:12:20,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:12:20,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:12:20,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909436984] [2024-06-14 13:12:20,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:12:20,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:12:20,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:12:20,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:12:20,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:12:21,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:12:21,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 371 transitions, 5084 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:12:21,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:12:21,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:12:21,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:12:22,392 INFO L124 PetriNetUnfolderBase]: 3573/5747 cut-off events. [2024-06-14 13:12:22,392 INFO L125 PetriNetUnfolderBase]: For 512617/512617 co-relation queries the response was YES. [2024-06-14 13:12:22,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48338 conditions, 5747 events. 3573/5747 cut-off events. For 512617/512617 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 36150 event pairs, 704 based on Foata normal form. 12/5757 useless extension candidates. Maximal degree in co-relation 48189. Up to 5223 conditions per place. [2024-06-14 13:12:22,480 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 346 selfloop transitions, 54 changer transitions 0/405 dead transitions. [2024-06-14 13:12:22,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 405 transitions, 5876 flow [2024-06-14 13:12:22,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:12:22,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:12:22,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-14 13:12:22,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-14 13:12:22,482 INFO L175 Difference]: Start difference. First operand has 310 places, 371 transitions, 5084 flow. Second operand 10 states and 188 transitions. [2024-06-14 13:12:22,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 405 transitions, 5876 flow [2024-06-14 13:12:23,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 405 transitions, 5738 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-14 13:12:23,567 INFO L231 Difference]: Finished difference. Result has 311 places, 370 transitions, 4946 flow [2024-06-14 13:12:23,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4834, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4946, PETRI_PLACES=311, PETRI_TRANSITIONS=370} [2024-06-14 13:12:23,567 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 268 predicate places. [2024-06-14 13:12:23,568 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 370 transitions, 4946 flow [2024-06-14 13:12:23,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:12:23,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:12:23,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:12:23,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 13:12:23,568 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)] === [2024-06-14 13:12:23,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:12:23,569 INFO L85 PathProgramCache]: Analyzing trace with hash -963781923, now seen corresponding path program 4 times [2024-06-14 13:12:23,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:12:23,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090665485] [2024-06-14 13:12:23,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:12:23,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:12:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:12:24,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:12:24,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:12:24,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090665485] [2024-06-14 13:12:24,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090665485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:12:24,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:12:24,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:12:24,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340910873] [2024-06-14 13:12:24,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:12:24,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:12:24,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:12:24,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:12:24,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:12:24,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:12:24,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 370 transitions, 4946 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:12:24,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:12:24,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:12:24,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:12:25,582 INFO L124 PetriNetUnfolderBase]: 3695/5927 cut-off events. [2024-06-14 13:12:25,582 INFO L125 PetriNetUnfolderBase]: For 545714/545714 co-relation queries the response was YES. [2024-06-14 13:12:25,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51342 conditions, 5927 events. 3695/5927 cut-off events. For 545714/545714 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 37341 event pairs, 695 based on Foata normal form. 2/5927 useless extension candidates. Maximal degree in co-relation 51192. Up to 4875 conditions per place. [2024-06-14 13:12:25,668 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 274 selfloop transitions, 133 changer transitions 0/412 dead transitions. [2024-06-14 13:12:25,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 412 transitions, 6607 flow [2024-06-14 13:12:25,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:12:25,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:12:25,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-14 13:12:25,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-14 13:12:25,670 INFO L175 Difference]: Start difference. First operand has 311 places, 370 transitions, 4946 flow. Second operand 8 states and 162 transitions. [2024-06-14 13:12:25,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 412 transitions, 6607 flow [2024-06-14 13:12:26,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 412 transitions, 6317 flow, removed 24 selfloop flow, removed 12 redundant places. [2024-06-14 13:12:26,810 INFO L231 Difference]: Finished difference. Result has 308 places, 384 transitions, 5329 flow [2024-06-14 13:12:26,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4656, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5329, PETRI_PLACES=308, PETRI_TRANSITIONS=384} [2024-06-14 13:12:26,814 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 265 predicate places. [2024-06-14 13:12:26,814 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 384 transitions, 5329 flow [2024-06-14 13:12:26,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:12:26,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:12:26,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:12:26,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 13:12:26,815 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)] === [2024-06-14 13:12:26,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:12:26,815 INFO L85 PathProgramCache]: Analyzing trace with hash -951401763, now seen corresponding path program 5 times [2024-06-14 13:12:26,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:12:26,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524102560] [2024-06-14 13:12:26,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:12:26,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:12:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:12:27,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:12:27,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:12:27,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524102560] [2024-06-14 13:12:27,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524102560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:12:27,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:12:27,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:12:27,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608441543] [2024-06-14 13:12:27,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:12:27,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:12:27,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:12:27,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:12:27,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:12:27,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:12:27,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 384 transitions, 5329 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:12:27,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:12:27,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:12:27,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:12:28,840 INFO L124 PetriNetUnfolderBase]: 3677/5899 cut-off events. [2024-06-14 13:12:28,840 INFO L125 PetriNetUnfolderBase]: For 548790/548790 co-relation queries the response was YES. [2024-06-14 13:12:28,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50596 conditions, 5899 events. 3677/5899 cut-off events. For 548790/548790 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 37159 event pairs, 704 based on Foata normal form. 6/5903 useless extension candidates. Maximal degree in co-relation 50448. Up to 4864 conditions per place. [2024-06-14 13:12:28,918 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 276 selfloop transitions, 129 changer transitions 0/410 dead transitions. [2024-06-14 13:12:28,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 410 transitions, 6627 flow [2024-06-14 13:12:28,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:12:28,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:12:28,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-14 13:12:28,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-14 13:12:28,920 INFO L175 Difference]: Start difference. First operand has 308 places, 384 transitions, 5329 flow. Second operand 8 states and 161 transitions. [2024-06-14 13:12:28,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 410 transitions, 6627 flow [2024-06-14 13:12:30,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 410 transitions, 6380 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-14 13:12:30,088 INFO L231 Difference]: Finished difference. Result has 312 places, 384 transitions, 5348 flow [2024-06-14 13:12:30,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5082, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5348, PETRI_PLACES=312, PETRI_TRANSITIONS=384} [2024-06-14 13:12:30,089 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 269 predicate places. [2024-06-14 13:12:30,089 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 384 transitions, 5348 flow [2024-06-14 13:12:30,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:12:30,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:12:30,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:12:30,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 13:12:30,090 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)] === [2024-06-14 13:12:30,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:12:30,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1220282433, now seen corresponding path program 6 times [2024-06-14 13:12:30,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:12:30,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792127894] [2024-06-14 13:12:30,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:12:30,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:12:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:12:30,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:12:30,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:12:30,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792127894] [2024-06-14 13:12:30,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792127894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:12:30,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:12:30,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:12:30,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671853185] [2024-06-14 13:12:30,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:12:30,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:12:30,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:12:30,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:12:30,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:12:30,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:12:30,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 384 transitions, 5348 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:12:30,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:12:30,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:12:30,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:12:32,111 INFO L124 PetriNetUnfolderBase]: 3663/5881 cut-off events. [2024-06-14 13:12:32,111 INFO L125 PetriNetUnfolderBase]: For 542932/542932 co-relation queries the response was YES. [2024-06-14 13:12:32,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50305 conditions, 5881 events. 3663/5881 cut-off events. For 542932/542932 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 37034 event pairs, 711 based on Foata normal form. 2/5881 useless extension candidates. Maximal degree in co-relation 50156. Up to 4853 conditions per place. [2024-06-14 13:12:32,186 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 275 selfloop transitions, 133 changer transitions 0/413 dead transitions. [2024-06-14 13:12:32,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 413 transitions, 6810 flow [2024-06-14 13:12:32,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:12:32,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:12:32,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-14 13:12:32,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-06-14 13:12:32,188 INFO L175 Difference]: Start difference. First operand has 312 places, 384 transitions, 5348 flow. Second operand 8 states and 164 transitions. [2024-06-14 13:12:32,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 413 transitions, 6810 flow [2024-06-14 13:12:33,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 413 transitions, 6470 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-06-14 13:12:33,352 INFO L231 Difference]: Finished difference. Result has 315 places, 384 transitions, 5282 flow [2024-06-14 13:12:33,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5008, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5282, PETRI_PLACES=315, PETRI_TRANSITIONS=384} [2024-06-14 13:12:33,353 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 272 predicate places. [2024-06-14 13:12:33,353 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 384 transitions, 5282 flow [2024-06-14 13:12:33,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:12:33,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:12:33,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:12:33,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 13:12:33,353 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)] === [2024-06-14 13:12:33,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:12:33,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1220162463, now seen corresponding path program 7 times [2024-06-14 13:12:33,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:12:33,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818080305] [2024-06-14 13:12:33,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:12:33,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:12:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:12:34,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:12:34,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:12:34,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818080305] [2024-06-14 13:12:34,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818080305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:12:34,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:12:34,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:12:34,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291914894] [2024-06-14 13:12:34,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:12:34,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:12:34,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:12:34,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:12:34,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:12:34,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:12:34,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 384 transitions, 5282 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:12:34,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:12:34,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:12:34,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:12:35,615 INFO L124 PetriNetUnfolderBase]: 3683/5923 cut-off events. [2024-06-14 13:12:35,615 INFO L125 PetriNetUnfolderBase]: For 553828/553828 co-relation queries the response was YES. [2024-06-14 13:12:35,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50509 conditions, 5923 events. 3683/5923 cut-off events. For 553828/553828 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 37459 event pairs, 700 based on Foata normal form. 2/5923 useless extension candidates. Maximal degree in co-relation 50359. Up to 5416 conditions per place. [2024-06-14 13:12:35,688 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 334 selfloop transitions, 74 changer transitions 0/413 dead transitions. [2024-06-14 13:12:35,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 413 transitions, 6363 flow [2024-06-14 13:12:35,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:12:35,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:12:35,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-14 13:12:35,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-14 13:12:35,689 INFO L175 Difference]: Start difference. First operand has 315 places, 384 transitions, 5282 flow. Second operand 8 states and 153 transitions. [2024-06-14 13:12:35,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 413 transitions, 6363 flow [2024-06-14 13:12:36,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 413 transitions, 5867 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-14 13:12:36,925 INFO L231 Difference]: Finished difference. Result has 313 places, 392 transitions, 5095 flow [2024-06-14 13:12:36,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4815, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5095, PETRI_PLACES=313, PETRI_TRANSITIONS=392} [2024-06-14 13:12:36,925 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 270 predicate places. [2024-06-14 13:12:36,925 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 392 transitions, 5095 flow [2024-06-14 13:12:36,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:12:36,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:12:36,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:12:36,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 13:12:36,926 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)] === [2024-06-14 13:12:36,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:12:36,926 INFO L85 PathProgramCache]: Analyzing trace with hash -836377503, now seen corresponding path program 8 times [2024-06-14 13:12:36,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:12:36,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023936232] [2024-06-14 13:12:36,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:12:36,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:12:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:12:37,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:12:37,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:12:37,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023936232] [2024-06-14 13:12:37,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023936232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:12:37,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:12:37,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:12:37,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506490201] [2024-06-14 13:12:37,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:12:37,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:12:37,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:12:37,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:12:37,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:12:37,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:12:37,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 392 transitions, 5095 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:12:37,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:12:37,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:12:37,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:12:39,273 INFO L124 PetriNetUnfolderBase]: 3665/5909 cut-off events. [2024-06-14 13:12:39,273 INFO L125 PetriNetUnfolderBase]: For 554972/554972 co-relation queries the response was YES. [2024-06-14 13:12:39,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49005 conditions, 5909 events. 3665/5909 cut-off events. For 554972/554972 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 37489 event pairs, 696 based on Foata normal form. 6/5913 useless extension candidates. Maximal degree in co-relation 48856. Up to 5248 conditions per place. [2024-06-14 13:12:39,353 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 329 selfloop transitions, 88 changer transitions 0/422 dead transitions. [2024-06-14 13:12:39,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 422 transitions, 6338 flow [2024-06-14 13:12:39,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:12:39,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:12:39,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-14 13:12:39,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-14 13:12:39,355 INFO L175 Difference]: Start difference. First operand has 313 places, 392 transitions, 5095 flow. Second operand 10 states and 190 transitions. [2024-06-14 13:12:39,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 422 transitions, 6338 flow [2024-06-14 13:12:40,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 422 transitions, 6177 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-14 13:12:40,636 INFO L231 Difference]: Finished difference. Result has 319 places, 392 transitions, 5118 flow [2024-06-14 13:12:40,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4934, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5118, PETRI_PLACES=319, PETRI_TRANSITIONS=392} [2024-06-14 13:12:40,637 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 276 predicate places. [2024-06-14 13:12:40,637 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 392 transitions, 5118 flow [2024-06-14 13:12:40,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:12:40,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:12:40,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:12:40,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 13:12:40,637 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)] === [2024-06-14 13:12:40,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:12:40,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1633274411, now seen corresponding path program 9 times [2024-06-14 13:12:40,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:12:40,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786402398] [2024-06-14 13:12:40,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:12:40,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:12:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:12:41,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:12:41,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:12:41,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786402398] [2024-06-14 13:12:41,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786402398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:12:41,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:12:41,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:12:41,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597534760] [2024-06-14 13:12:41,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:12:41,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:12:41,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:12:41,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:12:41,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:12:41,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:12:41,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 392 transitions, 5118 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:12:41,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:12:41,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:12:41,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:12:42,888 INFO L124 PetriNetUnfolderBase]: 3639/5865 cut-off events. [2024-06-14 13:12:42,889 INFO L125 PetriNetUnfolderBase]: For 547752/547752 co-relation queries the response was YES. [2024-06-14 13:12:42,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48420 conditions, 5865 events. 3639/5865 cut-off events. For 547752/547752 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 37114 event pairs, 696 based on Foata normal form. 6/5869 useless extension candidates. Maximal degree in co-relation 48270. Up to 5229 conditions per place. [2024-06-14 13:12:42,962 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 327 selfloop transitions, 83 changer transitions 0/415 dead transitions. [2024-06-14 13:12:42,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 415 transitions, 6126 flow [2024-06-14 13:12:42,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:12:42,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:12:42,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-14 13:12:42,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46130952380952384 [2024-06-14 13:12:42,964 INFO L175 Difference]: Start difference. First operand has 319 places, 392 transitions, 5118 flow. Second operand 8 states and 155 transitions. [2024-06-14 13:12:42,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 415 transitions, 6126 flow [2024-06-14 13:12:44,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 415 transitions, 5808 flow, removed 57 selfloop flow, removed 8 redundant places. [2024-06-14 13:12:44,275 INFO L231 Difference]: Finished difference. Result has 319 places, 392 transitions, 4975 flow [2024-06-14 13:12:44,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4800, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4975, PETRI_PLACES=319, PETRI_TRANSITIONS=392} [2024-06-14 13:12:44,279 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 276 predicate places. [2024-06-14 13:12:44,279 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 392 transitions, 4975 flow [2024-06-14 13:12:44,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:12:44,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:12:44,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:12:44,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 13:12:44,280 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)] === [2024-06-14 13:12:44,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:12:44,280 INFO L85 PathProgramCache]: Analyzing trace with hash 762275391, now seen corresponding path program 10 times [2024-06-14 13:12:44,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:12:44,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673242447] [2024-06-14 13:12:44,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:12:44,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:12:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:12:44,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:12:44,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:12:44,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673242447] [2024-06-14 13:12:44,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673242447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:12:44,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:12:44,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:12:44,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339514435] [2024-06-14 13:12:44,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:12:44,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:12:44,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:12:44,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:12:44,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:12:44,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:12:44,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 392 transitions, 4975 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:12:44,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:12:44,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:12:44,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:12:46,257 INFO L124 PetriNetUnfolderBase]: 3621/5849 cut-off events. [2024-06-14 13:12:46,257 INFO L125 PetriNetUnfolderBase]: For 537806/537806 co-relation queries the response was YES. [2024-06-14 13:12:46,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47420 conditions, 5849 events. 3621/5849 cut-off events. For 537806/537806 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 37152 event pairs, 741 based on Foata normal form. 6/5854 useless extension candidates. Maximal degree in co-relation 47269. Up to 5454 conditions per place. [2024-06-14 13:12:46,474 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 358 selfloop transitions, 53 changer transitions 0/416 dead transitions. [2024-06-14 13:12:46,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 416 transitions, 5906 flow [2024-06-14 13:12:46,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:12:46,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:12:46,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-14 13:12:46,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-14 13:12:46,483 INFO L175 Difference]: Start difference. First operand has 319 places, 392 transitions, 4975 flow. Second operand 7 states and 144 transitions. [2024-06-14 13:12:46,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 416 transitions, 5906 flow [2024-06-14 13:12:47,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 416 transitions, 5686 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-14 13:12:47,851 INFO L231 Difference]: Finished difference. Result has 319 places, 392 transitions, 4884 flow [2024-06-14 13:12:47,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4755, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4884, PETRI_PLACES=319, PETRI_TRANSITIONS=392} [2024-06-14 13:12:47,851 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 276 predicate places. [2024-06-14 13:12:47,852 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 392 transitions, 4884 flow [2024-06-14 13:12:47,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:12:47,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:12:47,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:12:47,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 13:12:47,853 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)] === [2024-06-14 13:12:47,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:12:47,854 INFO L85 PathProgramCache]: Analyzing trace with hash 968928831, now seen corresponding path program 11 times [2024-06-14 13:12:47,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:12:47,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436468377] [2024-06-14 13:12:47,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:12:47,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:12:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:12:48,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:12:48,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:12:48,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436468377] [2024-06-14 13:12:48,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436468377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:12:48,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:12:48,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:12:48,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171551476] [2024-06-14 13:12:48,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:12:48,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:12:48,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:12:48,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:12:48,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:12:48,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:12:48,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 392 transitions, 4884 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:12:48,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:12:48,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:12:48,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:12:50,106 INFO L124 PetriNetUnfolderBase]: 3603/5807 cut-off events. [2024-06-14 13:12:50,106 INFO L125 PetriNetUnfolderBase]: For 526906/526906 co-relation queries the response was YES. [2024-06-14 13:12:50,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46507 conditions, 5807 events. 3603/5807 cut-off events. For 526906/526906 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 36722 event pairs, 722 based on Foata normal form. 6/5811 useless extension candidates. Maximal degree in co-relation 46355. Up to 5102 conditions per place. [2024-06-14 13:12:50,198 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 320 selfloop transitions, 94 changer transitions 0/419 dead transitions. [2024-06-14 13:12:50,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 419 transitions, 6048 flow [2024-06-14 13:12:50,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:12:50,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:12:50,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-14 13:12:50,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-14 13:12:50,200 INFO L175 Difference]: Start difference. First operand has 319 places, 392 transitions, 4884 flow. Second operand 7 states and 147 transitions. [2024-06-14 13:12:50,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 419 transitions, 6048 flow [2024-06-14 13:12:51,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 419 transitions, 5873 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-14 13:12:51,611 INFO L231 Difference]: Finished difference. Result has 320 places, 392 transitions, 4917 flow [2024-06-14 13:12:51,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4711, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4917, PETRI_PLACES=320, PETRI_TRANSITIONS=392} [2024-06-14 13:12:51,612 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 277 predicate places. [2024-06-14 13:12:51,612 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 392 transitions, 4917 flow [2024-06-14 13:12:51,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:12:51,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:12:51,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:12:51,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 13:12:51,613 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)] === [2024-06-14 13:12:51,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:12:51,624 INFO L85 PathProgramCache]: Analyzing trace with hash -663794547, now seen corresponding path program 12 times [2024-06-14 13:12:51,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:12:51,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853478627] [2024-06-14 13:12:51,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:12:51,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:12:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:12:52,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:12:52,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:12:52,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853478627] [2024-06-14 13:12:52,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853478627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:12:52,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:12:52,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:12:52,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922367848] [2024-06-14 13:12:52,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:12:52,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:12:52,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:12:52,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:12:52,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:12:52,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:12:52,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 392 transitions, 4917 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:12:52,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:12:52,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:12:52,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:12:53,640 INFO L124 PetriNetUnfolderBase]: 3577/5765 cut-off events. [2024-06-14 13:12:53,641 INFO L125 PetriNetUnfolderBase]: For 506177/506177 co-relation queries the response was YES. [2024-06-14 13:12:53,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45743 conditions, 5765 events. 3577/5765 cut-off events. For 506177/506177 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 36395 event pairs, 702 based on Foata normal form. 6/5769 useless extension candidates. Maximal degree in co-relation 45590. Up to 5083 conditions per place. [2024-06-14 13:12:53,724 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 316 selfloop transitions, 97 changer transitions 0/418 dead transitions. [2024-06-14 13:12:53,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 418 transitions, 5911 flow [2024-06-14 13:12:53,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:12:53,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:12:53,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 145 transitions. [2024-06-14 13:12:53,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4931972789115646 [2024-06-14 13:12:53,726 INFO L175 Difference]: Start difference. First operand has 320 places, 392 transitions, 4917 flow. Second operand 7 states and 145 transitions. [2024-06-14 13:12:53,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 418 transitions, 5911 flow [2024-06-14 13:12:55,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 418 transitions, 5595 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-14 13:12:55,273 INFO L231 Difference]: Finished difference. Result has 320 places, 392 transitions, 4811 flow [2024-06-14 13:12:55,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4601, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4811, PETRI_PLACES=320, PETRI_TRANSITIONS=392} [2024-06-14 13:12:55,274 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 277 predicate places. [2024-06-14 13:12:55,274 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 392 transitions, 4811 flow [2024-06-14 13:12:55,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 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) [2024-06-14 13:12:55,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:12:55,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:12:55,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 13:12:55,274 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)] === [2024-06-14 13:12:55,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:12:55,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1190618325, now seen corresponding path program 1 times [2024-06-14 13:12:55,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:12:55,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804496379] [2024-06-14 13:12:55,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:12:55,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:12:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:12:56,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:12:56,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:12:56,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804496379] [2024-06-14 13:12:56,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804496379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:12:56,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:12:56,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:12:56,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733642773] [2024-06-14 13:12:56,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:12:56,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:12:56,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:12:56,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:12:56,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:12:56,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:12:56,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 392 transitions, 4811 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-14 13:12:56,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:12:56,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:12:56,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:12:57,480 INFO L124 PetriNetUnfolderBase]: 3605/5819 cut-off events. [2024-06-14 13:12:57,480 INFO L125 PetriNetUnfolderBase]: For 510170/510170 co-relation queries the response was YES. [2024-06-14 13:12:57,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45827 conditions, 5819 events. 3605/5819 cut-off events. For 510170/510170 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 36737 event pairs, 684 based on Foata normal form. 8/5826 useless extension candidates. Maximal degree in co-relation 45674. Up to 5362 conditions per place. [2024-06-14 13:12:57,568 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 376 selfloop transitions, 35 changer transitions 0/416 dead transitions. [2024-06-14 13:12:57,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 416 transitions, 5781 flow [2024-06-14 13:12:57,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:12:57,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:12:57,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-06-14 13:12:57,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-14 13:12:57,570 INFO L175 Difference]: Start difference. First operand has 320 places, 392 transitions, 4811 flow. Second operand 6 states and 129 transitions. [2024-06-14 13:12:57,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 416 transitions, 5781 flow [2024-06-14 13:12:58,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 416 transitions, 5505 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-14 13:12:58,916 INFO L231 Difference]: Finished difference. Result has 318 places, 393 transitions, 4629 flow [2024-06-14 13:12:58,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4535, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4629, PETRI_PLACES=318, PETRI_TRANSITIONS=393} [2024-06-14 13:12:58,916 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 275 predicate places. [2024-06-14 13:12:58,916 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 393 transitions, 4629 flow [2024-06-14 13:12:58,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-14 13:12:58,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:12:58,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:12:58,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 13:12:58,917 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)] === [2024-06-14 13:12:58,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:12:58,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1205855445, now seen corresponding path program 2 times [2024-06-14 13:12:58,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:12:58,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976719355] [2024-06-14 13:12:58,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:12:58,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:12:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:12:59,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:12:59,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:12:59,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976719355] [2024-06-14 13:12:59,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976719355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:12:59,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:12:59,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:12:59,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811759965] [2024-06-14 13:12:59,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:12:59,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:12:59,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:12:59,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:12:59,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:12:59,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:12:59,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 393 transitions, 4629 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-14 13:12:59,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:12:59,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:12:59,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:13:01,266 INFO L124 PetriNetUnfolderBase]: 3607/5811 cut-off events. [2024-06-14 13:13:01,267 INFO L125 PetriNetUnfolderBase]: For 496240/496240 co-relation queries the response was YES. [2024-06-14 13:13:01,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45170 conditions, 5811 events. 3607/5811 cut-off events. For 496240/496240 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 36681 event pairs, 703 based on Foata normal form. 8/5815 useless extension candidates. Maximal degree in co-relation 45017. Up to 5228 conditions per place. [2024-06-14 13:13:01,337 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 383 selfloop transitions, 30 changer transitions 0/418 dead transitions. [2024-06-14 13:13:01,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 418 transitions, 5827 flow [2024-06-14 13:13:01,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:13:01,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:13:01,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-14 13:13:01,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2024-06-14 13:13:01,339 INFO L175 Difference]: Start difference. First operand has 318 places, 393 transitions, 4629 flow. Second operand 6 states and 122 transitions. [2024-06-14 13:13:01,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 418 transitions, 5827 flow [2024-06-14 13:13:02,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 418 transitions, 5763 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 13:13:02,654 INFO L231 Difference]: Finished difference. Result has 320 places, 394 transitions, 4641 flow [2024-06-14 13:13:02,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4565, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4641, PETRI_PLACES=320, PETRI_TRANSITIONS=394} [2024-06-14 13:13:02,655 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 277 predicate places. [2024-06-14 13:13:02,655 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 394 transitions, 4641 flow [2024-06-14 13:13:02,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-14 13:13:02,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:13:02,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:13:02,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 13:13:02,656 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)] === [2024-06-14 13:13:02,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:13:02,657 INFO L85 PathProgramCache]: Analyzing trace with hash -954248803, now seen corresponding path program 1 times [2024-06-14 13:13:02,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:13:02,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247320529] [2024-06-14 13:13:02,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:13:02,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:13:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:13:03,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:13:03,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:13:03,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247320529] [2024-06-14 13:13:03,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247320529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:13:03,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:13:03,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:13:03,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398401579] [2024-06-14 13:13:03,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:13:03,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:13:03,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:13:03,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:13:03,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:13:03,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:13:03,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 394 transitions, 4641 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:13:03,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:13:03,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:13:03,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:13:05,078 INFO L124 PetriNetUnfolderBase]: 3615/5849 cut-off events. [2024-06-14 13:13:05,079 INFO L125 PetriNetUnfolderBase]: For 487979/487979 co-relation queries the response was YES. [2024-06-14 13:13:05,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45511 conditions, 5849 events. 3615/5849 cut-off events. For 487979/487979 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 37073 event pairs, 697 based on Foata normal form. 2/5850 useless extension candidates. Maximal degree in co-relation 45357. Up to 5500 conditions per place. [2024-06-14 13:13:05,166 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 372 selfloop transitions, 47 changer transitions 0/424 dead transitions. [2024-06-14 13:13:05,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 424 transitions, 5839 flow [2024-06-14 13:13:05,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:13:05,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:13:05,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-14 13:13:05,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-14 13:13:05,167 INFO L175 Difference]: Start difference. First operand has 320 places, 394 transitions, 4641 flow. Second operand 9 states and 165 transitions. [2024-06-14 13:13:05,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 424 transitions, 5839 flow [2024-06-14 13:13:06,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 424 transitions, 5788 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-14 13:13:06,779 INFO L231 Difference]: Finished difference. Result has 326 places, 398 transitions, 4821 flow [2024-06-14 13:13:06,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4590, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4821, PETRI_PLACES=326, PETRI_TRANSITIONS=398} [2024-06-14 13:13:06,779 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 283 predicate places. [2024-06-14 13:13:06,779 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 398 transitions, 4821 flow [2024-06-14 13:13:06,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:13:06,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:13:06,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:13:06,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 13:13:06,780 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)] === [2024-06-14 13:13:06,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:13:06,785 INFO L85 PathProgramCache]: Analyzing trace with hash -431073885, now seen corresponding path program 2 times [2024-06-14 13:13:06,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:13:06,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587447412] [2024-06-14 13:13:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:13:06,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:13:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:13:07,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:13:07,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:13:07,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587447412] [2024-06-14 13:13:07,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587447412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:13:07,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:13:07,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:13:07,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86293135] [2024-06-14 13:13:07,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:13:07,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:13:07,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:13:07,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:13:07,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:13:07,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:13:07,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 398 transitions, 4821 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:13:07,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:13:07,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:13:07,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:13:09,115 INFO L124 PetriNetUnfolderBase]: 3623/5861 cut-off events. [2024-06-14 13:13:09,115 INFO L125 PetriNetUnfolderBase]: For 499745/499745 co-relation queries the response was YES. [2024-06-14 13:13:09,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45788 conditions, 5861 events. 3623/5861 cut-off events. For 499745/499745 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 37144 event pairs, 731 based on Foata normal form. 2/5862 useless extension candidates. Maximal degree in co-relation 45633. Up to 5547 conditions per place. [2024-06-14 13:13:09,212 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 372 selfloop transitions, 44 changer transitions 0/421 dead transitions. [2024-06-14 13:13:09,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 421 transitions, 5773 flow [2024-06-14 13:13:09,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:13:09,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:13:09,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-14 13:13:09,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2024-06-14 13:13:09,214 INFO L175 Difference]: Start difference. First operand has 326 places, 398 transitions, 4821 flow. Second operand 9 states and 160 transitions. [2024-06-14 13:13:09,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 421 transitions, 5773 flow [2024-06-14 13:13:10,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 421 transitions, 5622 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-14 13:13:10,445 INFO L231 Difference]: Finished difference. Result has 330 places, 400 transitions, 4835 flow [2024-06-14 13:13:10,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4690, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4835, PETRI_PLACES=330, PETRI_TRANSITIONS=400} [2024-06-14 13:13:10,446 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 287 predicate places. [2024-06-14 13:13:10,446 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 400 transitions, 4835 flow [2024-06-14 13:13:10,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:13:10,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:13:10,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:13:10,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 13:13:10,447 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)] === [2024-06-14 13:13:10,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:13:10,447 INFO L85 PathProgramCache]: Analyzing trace with hash -951507039, now seen corresponding path program 1 times [2024-06-14 13:13:10,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:13:10,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67423394] [2024-06-14 13:13:10,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:13:10,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:13:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:13:11,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:13:11,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:13:11,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67423394] [2024-06-14 13:13:11,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67423394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:13:11,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:13:11,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:13:11,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513049707] [2024-06-14 13:13:11,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:13:11,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:13:11,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:13:11,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:13:11,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:13:11,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:13:11,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 400 transitions, 4835 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:13:11,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:13:11,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:13:11,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:13:12,737 INFO L124 PetriNetUnfolderBase]: 3671/5922 cut-off events. [2024-06-14 13:13:12,737 INFO L125 PetriNetUnfolderBase]: For 530932/530932 co-relation queries the response was YES. [2024-06-14 13:13:12,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46702 conditions, 5922 events. 3671/5922 cut-off events. For 530932/530932 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 37631 event pairs, 687 based on Foata normal form. 4/5923 useless extension candidates. Maximal degree in co-relation 46545. Up to 5008 conditions per place. [2024-06-14 13:13:12,830 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 376 selfloop transitions, 121 changer transitions 0/502 dead transitions. [2024-06-14 13:13:12,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 502 transitions, 7511 flow [2024-06-14 13:13:12,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:13:12,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:13:12,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-14 13:13:12,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47883597883597884 [2024-06-14 13:13:12,831 INFO L175 Difference]: Start difference. First operand has 330 places, 400 transitions, 4835 flow. Second operand 9 states and 181 transitions. [2024-06-14 13:13:12,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 502 transitions, 7511 flow [2024-06-14 13:13:14,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 502 transitions, 7386 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-14 13:13:14,117 INFO L231 Difference]: Finished difference. Result has 336 places, 458 transitions, 5863 flow [2024-06-14 13:13:14,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4710, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5863, PETRI_PLACES=336, PETRI_TRANSITIONS=458} [2024-06-14 13:13:14,118 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 293 predicate places. [2024-06-14 13:13:14,118 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 458 transitions, 5863 flow [2024-06-14 13:13:14,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:13:14,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:13:14,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:13:14,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 13:13:14,118 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)] === [2024-06-14 13:13:14,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:13:14,119 INFO L85 PathProgramCache]: Analyzing trace with hash -951391843, now seen corresponding path program 3 times [2024-06-14 13:13:14,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:13:14,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199509327] [2024-06-14 13:13:14,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:13:14,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:13:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:13:15,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:13:15,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:13:15,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199509327] [2024-06-14 13:13:15,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199509327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:13:15,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:13:15,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:13:15,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367942906] [2024-06-14 13:13:15,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:13:15,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:13:15,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:13:15,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:13:15,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:13:15,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:13:15,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 458 transitions, 5863 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:13:15,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:13:15,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:13:15,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:13:16,643 INFO L124 PetriNetUnfolderBase]: 3679/5936 cut-off events. [2024-06-14 13:13:16,644 INFO L125 PetriNetUnfolderBase]: For 541507/541507 co-relation queries the response was YES. [2024-06-14 13:13:16,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48599 conditions, 5936 events. 3679/5936 cut-off events. For 541507/541507 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 37629 event pairs, 732 based on Foata normal form. 2/5937 useless extension candidates. Maximal degree in co-relation 48437. Up to 5644 conditions per place. [2024-06-14 13:13:16,754 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 440 selfloop transitions, 33 changer transitions 0/478 dead transitions. [2024-06-14 13:13:16,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 478 transitions, 6905 flow [2024-06-14 13:13:16,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:13:16,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:13:16,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-14 13:13:16,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-06-14 13:13:16,755 INFO L175 Difference]: Start difference. First operand has 336 places, 458 transitions, 5863 flow. Second operand 9 states and 156 transitions. [2024-06-14 13:13:16,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 478 transitions, 6905 flow [2024-06-14 13:13:18,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 478 transitions, 6749 flow, removed 77 selfloop flow, removed 1 redundant places. [2024-06-14 13:13:18,161 INFO L231 Difference]: Finished difference. Result has 344 places, 460 transitions, 5834 flow [2024-06-14 13:13:18,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5707, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5834, PETRI_PLACES=344, PETRI_TRANSITIONS=460} [2024-06-14 13:13:18,162 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 301 predicate places. [2024-06-14 13:13:18,162 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 460 transitions, 5834 flow [2024-06-14 13:13:18,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:13:18,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:13:18,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:13:18,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 13:13:18,163 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)] === [2024-06-14 13:13:18,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:13:18,163 INFO L85 PathProgramCache]: Analyzing trace with hash -951387069, now seen corresponding path program 2 times [2024-06-14 13:13:18,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:13:18,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754923291] [2024-06-14 13:13:18,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:13:18,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:13:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:13:19,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:13:19,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:13:19,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754923291] [2024-06-14 13:13:19,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754923291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:13:19,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:13:19,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:13:19,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109352911] [2024-06-14 13:13:19,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:13:19,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:13:19,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:13:19,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:13:19,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:13:19,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:13:19,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 460 transitions, 5834 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:13:19,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:13:19,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:13:19,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:13:20,627 INFO L124 PetriNetUnfolderBase]: 3709/5972 cut-off events. [2024-06-14 13:13:20,627 INFO L125 PetriNetUnfolderBase]: For 565121/565121 co-relation queries the response was YES. [2024-06-14 13:13:20,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48413 conditions, 5972 events. 3709/5972 cut-off events. For 565121/565121 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 37855 event pairs, 690 based on Foata normal form. 6/5976 useless extension candidates. Maximal degree in co-relation 48248. Up to 4961 conditions per place. [2024-06-14 13:13:20,718 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 308 selfloop transitions, 180 changer transitions 0/493 dead transitions. [2024-06-14 13:13:20,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 493 transitions, 7144 flow [2024-06-14 13:13:20,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:13:20,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:13:20,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-14 13:13:20,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656084656084656 [2024-06-14 13:13:20,719 INFO L175 Difference]: Start difference. First operand has 344 places, 460 transitions, 5834 flow. Second operand 9 states and 176 transitions. [2024-06-14 13:13:20,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 493 transitions, 7144 flow [2024-06-14 13:13:22,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 493 transitions, 7037 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-14 13:13:22,453 INFO L231 Difference]: Finished difference. Result has 346 places, 467 transitions, 6264 flow [2024-06-14 13:13:22,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5727, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6264, PETRI_PLACES=346, PETRI_TRANSITIONS=467} [2024-06-14 13:13:22,454 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 303 predicate places. [2024-06-14 13:13:22,454 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 467 transitions, 6264 flow [2024-06-14 13:13:22,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:13:22,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:13:22,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:13:22,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 13:13:22,455 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)] === [2024-06-14 13:13:22,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:13:22,455 INFO L85 PathProgramCache]: Analyzing trace with hash -951391719, now seen corresponding path program 3 times [2024-06-14 13:13:22,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:13:22,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89776727] [2024-06-14 13:13:22,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:13:22,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:13:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:13:23,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:13:23,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:13:23,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89776727] [2024-06-14 13:13:23,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89776727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:13:23,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:13:23,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:13:23,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557089045] [2024-06-14 13:13:23,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:13:23,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:13:23,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:13:23,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:13:23,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:13:23,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:13:23,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 467 transitions, 6264 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:13:23,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:13:23,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:13:23,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:13:24,859 INFO L124 PetriNetUnfolderBase]: 3757/6045 cut-off events. [2024-06-14 13:13:24,860 INFO L125 PetriNetUnfolderBase]: For 586705/586705 co-relation queries the response was YES. [2024-06-14 13:13:24,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50671 conditions, 6045 events. 3757/6045 cut-off events. For 586705/586705 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 38360 event pairs, 688 based on Foata normal form. 4/6047 useless extension candidates. Maximal degree in co-relation 50505. Up to 5298 conditions per place. [2024-06-14 13:13:24,940 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 400 selfloop transitions, 109 changer transitions 0/514 dead transitions. [2024-06-14 13:13:24,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 514 transitions, 8266 flow [2024-06-14 13:13:24,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:13:24,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:13:24,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-14 13:13:24,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656084656084656 [2024-06-14 13:13:24,941 INFO L175 Difference]: Start difference. First operand has 346 places, 467 transitions, 6264 flow. Second operand 9 states and 176 transitions. [2024-06-14 13:13:24,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 514 transitions, 8266 flow [2024-06-14 13:13:26,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 514 transitions, 7781 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-06-14 13:13:26,558 INFO L231 Difference]: Finished difference. Result has 349 places, 476 transitions, 6244 flow [2024-06-14 13:13:26,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5787, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6244, PETRI_PLACES=349, PETRI_TRANSITIONS=476} [2024-06-14 13:13:26,558 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 306 predicate places. [2024-06-14 13:13:26,559 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 476 transitions, 6244 flow [2024-06-14 13:13:26,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:13:26,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:13:26,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:13:26,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 13:13:26,559 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)] === [2024-06-14 13:13:26,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:13:26,559 INFO L85 PathProgramCache]: Analyzing trace with hash -835915975, now seen corresponding path program 1 times [2024-06-14 13:13:26,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:13:26,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626364425] [2024-06-14 13:13:26,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:13:26,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:13:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:13:27,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:13:27,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:13:27,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626364425] [2024-06-14 13:13:27,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626364425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:13:27,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:13:27,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:13:27,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459766292] [2024-06-14 13:13:27,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:13:27,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:13:27,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:13:27,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:13:27,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:13:27,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:13:27,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 476 transitions, 6244 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:13:27,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:13:27,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:13:27,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:13:29,140 INFO L124 PetriNetUnfolderBase]: 3809/6127 cut-off events. [2024-06-14 13:13:29,140 INFO L125 PetriNetUnfolderBase]: For 643038/643038 co-relation queries the response was YES. [2024-06-14 13:13:29,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51250 conditions, 6127 events. 3809/6127 cut-off events. For 643038/643038 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 38986 event pairs, 701 based on Foata normal form. 14/6139 useless extension candidates. Maximal degree in co-relation 51082. Up to 5564 conditions per place. [2024-06-14 13:13:29,222 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 421 selfloop transitions, 78 changer transitions 0/504 dead transitions. [2024-06-14 13:13:29,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 504 transitions, 7534 flow [2024-06-14 13:13:29,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:13:29,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:13:29,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-14 13:13:29,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-14 13:13:29,224 INFO L175 Difference]: Start difference. First operand has 349 places, 476 transitions, 6244 flow. Second operand 8 states and 156 transitions. [2024-06-14 13:13:29,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 504 transitions, 7534 flow [2024-06-14 13:13:30,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 504 transitions, 7305 flow, removed 54 selfloop flow, removed 4 redundant places. [2024-06-14 13:13:30,924 INFO L231 Difference]: Finished difference. Result has 353 places, 478 transitions, 6246 flow [2024-06-14 13:13:30,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6019, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6246, PETRI_PLACES=353, PETRI_TRANSITIONS=478} [2024-06-14 13:13:30,925 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 310 predicate places. [2024-06-14 13:13:30,925 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 478 transitions, 6246 flow [2024-06-14 13:13:30,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:13:30,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:13:30,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:13:30,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 13:13:30,925 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)] === [2024-06-14 13:13:30,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:13:30,926 INFO L85 PathProgramCache]: Analyzing trace with hash -312808451, now seen corresponding path program 4 times [2024-06-14 13:13:30,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:13:30,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323875097] [2024-06-14 13:13:30,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:13:30,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:13:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:13:31,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:13:31,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:13:31,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323875097] [2024-06-14 13:13:31,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323875097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:13:31,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:13:31,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:13:31,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874395811] [2024-06-14 13:13:31,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:13:31,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:13:31,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:13:31,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:13:31,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:13:32,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:13:32,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 478 transitions, 6246 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:13:32,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:13:32,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:13:32,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:13:33,573 INFO L124 PetriNetUnfolderBase]: 3829/6155 cut-off events. [2024-06-14 13:13:33,573 INFO L125 PetriNetUnfolderBase]: For 614169/614169 co-relation queries the response was YES. [2024-06-14 13:13:33,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51626 conditions, 6155 events. 3829/6155 cut-off events. For 614169/614169 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 39197 event pairs, 712 based on Foata normal form. 4/6157 useless extension candidates. Maximal degree in co-relation 51456. Up to 5642 conditions per place. [2024-06-14 13:13:33,814 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 427 selfloop transitions, 84 changer transitions 0/516 dead transitions. [2024-06-14 13:13:33,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 516 transitions, 7816 flow [2024-06-14 13:13:33,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:13:33,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:13:33,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-14 13:13:33,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43506493506493504 [2024-06-14 13:13:33,816 INFO L175 Difference]: Start difference. First operand has 353 places, 478 transitions, 6246 flow. Second operand 11 states and 201 transitions. [2024-06-14 13:13:33,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 516 transitions, 7816 flow [2024-06-14 13:13:35,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 516 transitions, 7611 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-14 13:13:35,433 INFO L231 Difference]: Finished difference. Result has 359 places, 492 transitions, 6495 flow [2024-06-14 13:13:35,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6041, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6495, PETRI_PLACES=359, PETRI_TRANSITIONS=492} [2024-06-14 13:13:35,434 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 316 predicate places. [2024-06-14 13:13:35,434 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 492 transitions, 6495 flow [2024-06-14 13:13:35,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:13:35,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:13:35,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:13:35,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 13:13:35,435 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)] === [2024-06-14 13:13:35,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:13:35,435 INFO L85 PathProgramCache]: Analyzing trace with hash -836095899, now seen corresponding path program 5 times [2024-06-14 13:13:35,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:13:35,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81906398] [2024-06-14 13:13:35,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:13:35,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:13:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:13:36,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:13:36,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:13:36,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81906398] [2024-06-14 13:13:36,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81906398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:13:36,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:13:36,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:13:36,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242501106] [2024-06-14 13:13:36,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:13:36,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:13:36,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:13:36,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:13:36,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:13:36,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:13:36,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 492 transitions, 6495 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:13:36,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:13:36,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:13:36,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:13:37,993 INFO L124 PetriNetUnfolderBase]: 3849/6183 cut-off events. [2024-06-14 13:13:37,993 INFO L125 PetriNetUnfolderBase]: For 625708/625708 co-relation queries the response was YES. [2024-06-14 13:13:38,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52077 conditions, 6183 events. 3849/6183 cut-off events. For 625708/625708 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 39349 event pairs, 713 based on Foata normal form. 4/6185 useless extension candidates. Maximal degree in co-relation 51905. Up to 5670 conditions per place. [2024-06-14 13:13:38,091 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 433 selfloop transitions, 78 changer transitions 0/516 dead transitions. [2024-06-14 13:13:38,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 516 transitions, 7907 flow [2024-06-14 13:13:38,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:13:38,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:13:38,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-14 13:13:38,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-14 13:13:38,093 INFO L175 Difference]: Start difference. First operand has 359 places, 492 transitions, 6495 flow. Second operand 9 states and 169 transitions. [2024-06-14 13:13:38,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 516 transitions, 7907 flow [2024-06-14 13:13:40,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 516 transitions, 7703 flow, removed 72 selfloop flow, removed 3 redundant places. [2024-06-14 13:13:40,232 INFO L231 Difference]: Finished difference. Result has 365 places, 496 transitions, 6572 flow [2024-06-14 13:13:40,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6291, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6572, PETRI_PLACES=365, PETRI_TRANSITIONS=496} [2024-06-14 13:13:40,232 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 322 predicate places. [2024-06-14 13:13:40,232 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 496 transitions, 6572 flow [2024-06-14 13:13:40,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:13:40,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:13:40,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:13:40,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 13:13:40,234 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)] === [2024-06-14 13:13:40,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:13:40,234 INFO L85 PathProgramCache]: Analyzing trace with hash -312986081, now seen corresponding path program 6 times [2024-06-14 13:13:40,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:13:40,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760684286] [2024-06-14 13:13:40,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:13:40,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:13:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:13:41,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:13:41,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:13:41,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760684286] [2024-06-14 13:13:41,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760684286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:13:41,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:13:41,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:13:41,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646164493] [2024-06-14 13:13:41,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:13:41,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:13:41,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:13:41,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:13:41,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:13:41,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:13:41,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 496 transitions, 6572 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:13:41,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:13:41,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:13:41,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:13:43,175 INFO L124 PetriNetUnfolderBase]: 3935/6307 cut-off events. [2024-06-14 13:13:43,175 INFO L125 PetriNetUnfolderBase]: For 673362/673362 co-relation queries the response was YES. [2024-06-14 13:13:43,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54206 conditions, 6307 events. 3935/6307 cut-off events. For 673362/673362 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 40105 event pairs, 705 based on Foata normal form. 6/6311 useless extension candidates. Maximal degree in co-relation 54032. Up to 5534 conditions per place. [2024-06-14 13:13:43,281 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 400 selfloop transitions, 128 changer transitions 0/533 dead transitions. [2024-06-14 13:13:43,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 533 transitions, 8331 flow [2024-06-14 13:13:43,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:13:43,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:13:43,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-14 13:13:43,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45476190476190476 [2024-06-14 13:13:43,282 INFO L175 Difference]: Start difference. First operand has 365 places, 496 transitions, 6572 flow. Second operand 10 states and 191 transitions. [2024-06-14 13:13:43,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 533 transitions, 8331 flow [2024-06-14 13:13:45,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 533 transitions, 8072 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-14 13:13:45,169 INFO L231 Difference]: Finished difference. Result has 369 places, 510 transitions, 7009 flow [2024-06-14 13:13:45,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6315, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7009, PETRI_PLACES=369, PETRI_TRANSITIONS=510} [2024-06-14 13:13:45,170 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 326 predicate places. [2024-06-14 13:13:45,170 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 510 transitions, 7009 flow [2024-06-14 13:13:45,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:13:45,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:13:45,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:13:45,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 13:13:45,171 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)] === [2024-06-14 13:13:45,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:13:45,171 INFO L85 PathProgramCache]: Analyzing trace with hash -836100673, now seen corresponding path program 4 times [2024-06-14 13:13:45,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:13:45,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941485885] [2024-06-14 13:13:45,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:13:45,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:13:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:13:46,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:13:46,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:13:46,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941485885] [2024-06-14 13:13:46,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941485885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:13:46,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:13:46,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:13:46,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903708166] [2024-06-14 13:13:46,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:13:46,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:13:46,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:13:46,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:13:46,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:13:46,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:13:46,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 510 transitions, 7009 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:13:46,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:13:46,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:13:46,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:13:47,789 INFO L124 PetriNetUnfolderBase]: 3943/6329 cut-off events. [2024-06-14 13:13:47,789 INFO L125 PetriNetUnfolderBase]: For 678112/678112 co-relation queries the response was YES. [2024-06-14 13:13:47,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55231 conditions, 6329 events. 3943/6329 cut-off events. For 678112/678112 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 40271 event pairs, 770 based on Foata normal form. 2/6330 useless extension candidates. Maximal degree in co-relation 55055. Up to 6036 conditions per place. [2024-06-14 13:13:47,895 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 497 selfloop transitions, 25 changer transitions 0/527 dead transitions. [2024-06-14 13:13:47,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 527 transitions, 8145 flow [2024-06-14 13:13:47,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:13:47,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:13:47,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-14 13:13:47,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4021164021164021 [2024-06-14 13:13:47,896 INFO L175 Difference]: Start difference. First operand has 369 places, 510 transitions, 7009 flow. Second operand 9 states and 152 transitions. [2024-06-14 13:13:47,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 527 transitions, 8145 flow [2024-06-14 13:13:49,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 527 transitions, 7797 flow, removed 106 selfloop flow, removed 6 redundant places. [2024-06-14 13:13:49,973 INFO L231 Difference]: Finished difference. Result has 372 places, 512 transitions, 6776 flow [2024-06-14 13:13:49,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6661, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6776, PETRI_PLACES=372, PETRI_TRANSITIONS=512} [2024-06-14 13:13:49,981 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 329 predicate places. [2024-06-14 13:13:49,981 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 512 transitions, 6776 flow [2024-06-14 13:13:49,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:13:49,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:13:49,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:13:49,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 13:13:49,982 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)] === [2024-06-14 13:13:49,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:13:49,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1197291509, now seen corresponding path program 2 times [2024-06-14 13:13:49,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:13:49,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372681845] [2024-06-14 13:13:49,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:13:49,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:13:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:13:50,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:13:50,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:13:50,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372681845] [2024-06-14 13:13:50,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372681845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:13:50,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:13:50,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:13:50,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965366345] [2024-06-14 13:13:50,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:13:50,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:13:50,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:13:50,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:13:50,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:13:50,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:13:50,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 512 transitions, 6776 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:13:50,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:13:50,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:13:50,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:13:52,458 INFO L124 PetriNetUnfolderBase]: 4000/6408 cut-off events. [2024-06-14 13:13:52,459 INFO L125 PetriNetUnfolderBase]: For 744152/744152 co-relation queries the response was YES. [2024-06-14 13:13:52,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55440 conditions, 6408 events. 4000/6408 cut-off events. For 744152/744152 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 40885 event pairs, 787 based on Foata normal form. 14/6418 useless extension candidates. Maximal degree in co-relation 55262. Up to 5998 conditions per place. [2024-06-14 13:13:52,567 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 496 selfloop transitions, 34 changer transitions 0/535 dead transitions. [2024-06-14 13:13:52,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 535 transitions, 8085 flow [2024-06-14 13:13:52,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:13:52,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:13:52,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-14 13:13:52,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-14 13:13:52,569 INFO L175 Difference]: Start difference. First operand has 372 places, 512 transitions, 6776 flow. Second operand 7 states and 133 transitions. [2024-06-14 13:13:52,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 535 transitions, 8085 flow [2024-06-14 13:13:54,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 535 transitions, 7990 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-14 13:13:54,504 INFO L231 Difference]: Finished difference. Result has 373 places, 517 transitions, 6877 flow [2024-06-14 13:13:54,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6681, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6877, PETRI_PLACES=373, PETRI_TRANSITIONS=517} [2024-06-14 13:13:54,505 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 330 predicate places. [2024-06-14 13:13:54,505 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 517 transitions, 6877 flow [2024-06-14 13:13:54,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:13:54,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:13:54,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:13:54,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 13:13:54,505 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)] === [2024-06-14 13:13:54,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:13:54,506 INFO L85 PathProgramCache]: Analyzing trace with hash 969205661, now seen corresponding path program 5 times [2024-06-14 13:13:54,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:13:54,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770792040] [2024-06-14 13:13:54,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:13:54,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:13:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:13:55,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:13:55,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:13:55,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770792040] [2024-06-14 13:13:55,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770792040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:13:55,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:13:55,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:13:55,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537311323] [2024-06-14 13:13:55,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:13:55,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:13:55,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:13:55,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:13:55,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:13:55,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:13:55,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 517 transitions, 6877 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:13:55,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:13:55,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:13:55,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:13:57,182 INFO L124 PetriNetUnfolderBase]: 3995/6409 cut-off events. [2024-06-14 13:13:57,183 INFO L125 PetriNetUnfolderBase]: For 694140/694140 co-relation queries the response was YES. [2024-06-14 13:13:57,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55471 conditions, 6409 events. 3995/6409 cut-off events. For 694140/694140 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 40842 event pairs, 743 based on Foata normal form. 2/6410 useless extension candidates. Maximal degree in co-relation 55291. Up to 6083 conditions per place. [2024-06-14 13:13:57,285 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 505 selfloop transitions, 30 changer transitions 0/540 dead transitions. [2024-06-14 13:13:57,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 540 transitions, 8005 flow [2024-06-14 13:13:57,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:13:57,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:13:57,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-14 13:13:57,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-14 13:13:57,289 INFO L175 Difference]: Start difference. First operand has 373 places, 517 transitions, 6877 flow. Second operand 8 states and 150 transitions. [2024-06-14 13:13:57,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 540 transitions, 8005 flow [2024-06-14 13:13:59,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 540 transitions, 7858 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-14 13:13:59,446 INFO L231 Difference]: Finished difference. Result has 377 places, 517 transitions, 6798 flow [2024-06-14 13:13:59,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6730, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6798, PETRI_PLACES=377, PETRI_TRANSITIONS=517} [2024-06-14 13:13:59,446 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 334 predicate places. [2024-06-14 13:13:59,446 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 517 transitions, 6798 flow [2024-06-14 13:13:59,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:13:59,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:13:59,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:13:59,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 13:13:59,447 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)] === [2024-06-14 13:13:59,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:13:59,447 INFO L85 PathProgramCache]: Analyzing trace with hash 654626141, now seen corresponding path program 3 times [2024-06-14 13:13:59,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:13:59,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525007791] [2024-06-14 13:13:59,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:13:59,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:13:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:14:00,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:14:00,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:14:00,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525007791] [2024-06-14 13:14:00,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525007791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:14:00,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:14:00,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:14:00,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240041765] [2024-06-14 13:14:00,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:14:00,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:14:00,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:14:00,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:14:00,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:14:00,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:14:00,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 517 transitions, 6798 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:14:00,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:14:00,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:14:00,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:14:02,211 INFO L124 PetriNetUnfolderBase]: 4049/6486 cut-off events. [2024-06-14 13:14:02,212 INFO L125 PetriNetUnfolderBase]: For 765367/765367 co-relation queries the response was YES. [2024-06-14 13:14:02,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55939 conditions, 6486 events. 4049/6486 cut-off events. For 765367/765367 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 41484 event pairs, 730 based on Foata normal form. 16/6498 useless extension candidates. Maximal degree in co-relation 55759. Up to 5789 conditions per place. [2024-06-14 13:14:02,304 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 442 selfloop transitions, 98 changer transitions 0/545 dead transitions. [2024-06-14 13:14:02,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 545 transitions, 8228 flow [2024-06-14 13:14:02,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:14:02,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:14:02,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-14 13:14:02,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-14 13:14:02,306 INFO L175 Difference]: Start difference. First operand has 377 places, 517 transitions, 6798 flow. Second operand 7 states and 140 transitions. [2024-06-14 13:14:02,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 545 transitions, 8228 flow [2024-06-14 13:14:04,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 545 transitions, 8147 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-14 13:14:04,590 INFO L231 Difference]: Finished difference. Result has 378 places, 522 transitions, 7121 flow [2024-06-14 13:14:04,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6717, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7121, PETRI_PLACES=378, PETRI_TRANSITIONS=522} [2024-06-14 13:14:04,591 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 335 predicate places. [2024-06-14 13:14:04,591 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 522 transitions, 7121 flow [2024-06-14 13:14:04,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:14:04,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:14:04,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:14:04,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 13:14:04,591 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)] === [2024-06-14 13:14:04,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:14:04,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1205862389, now seen corresponding path program 4 times [2024-06-14 13:14:04,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:14:04,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688119538] [2024-06-14 13:14:04,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:14:04,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:14:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:14:05,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:14:05,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:14:05,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688119538] [2024-06-14 13:14:05,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688119538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:14:05,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:14:05,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:14:05,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583200321] [2024-06-14 13:14:05,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:14:05,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:14:05,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:14:05,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:14:05,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:14:05,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:14:05,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 522 transitions, 7121 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:14:05,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:14:05,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:14:05,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:14:07,237 INFO L124 PetriNetUnfolderBase]: 4129/6598 cut-off events. [2024-06-14 13:14:07,238 INFO L125 PetriNetUnfolderBase]: For 795481/795481 co-relation queries the response was YES. [2024-06-14 13:14:07,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58030 conditions, 6598 events. 4129/6598 cut-off events. For 795481/795481 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 42254 event pairs, 789 based on Foata normal form. 14/6608 useless extension candidates. Maximal degree in co-relation 57848. Up to 6141 conditions per place. [2024-06-14 13:14:07,351 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 506 selfloop transitions, 36 changer transitions 0/547 dead transitions. [2024-06-14 13:14:07,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 547 transitions, 8500 flow [2024-06-14 13:14:07,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:14:07,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:14:07,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-14 13:14:07,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46598639455782315 [2024-06-14 13:14:07,352 INFO L175 Difference]: Start difference. First operand has 378 places, 522 transitions, 7121 flow. Second operand 7 states and 137 transitions. [2024-06-14 13:14:07,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 547 transitions, 8500 flow [2024-06-14 13:14:09,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 547 transitions, 8273 flow, removed 55 selfloop flow, removed 4 redundant places. [2024-06-14 13:14:09,719 INFO L231 Difference]: Finished difference. Result has 382 places, 527 transitions, 7104 flow [2024-06-14 13:14:09,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6894, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7104, PETRI_PLACES=382, PETRI_TRANSITIONS=527} [2024-06-14 13:14:09,720 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 339 predicate places. [2024-06-14 13:14:09,720 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 527 transitions, 7104 flow [2024-06-14 13:14:09,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:14:09,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:14:09,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:14:09,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 13:14:09,721 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)] === [2024-06-14 13:14:09,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:14:09,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1205565471, now seen corresponding path program 1 times [2024-06-14 13:14:09,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:14:09,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178143426] [2024-06-14 13:14:09,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:14:09,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:14:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:14:10,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:14:10,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:14:10,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178143426] [2024-06-14 13:14:10,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178143426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:14:10,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:14:10,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:14:10,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86001982] [2024-06-14 13:14:10,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:14:10,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:14:10,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:14:10,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:14:10,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:14:10,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:14:10,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 527 transitions, 7104 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:14:10,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:14:10,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:14:10,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:14:12,397 INFO L124 PetriNetUnfolderBase]: 4141/6613 cut-off events. [2024-06-14 13:14:12,397 INFO L125 PetriNetUnfolderBase]: For 742386/742386 co-relation queries the response was YES. [2024-06-14 13:14:12,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58322 conditions, 6613 events. 4141/6613 cut-off events. For 742386/742386 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 42328 event pairs, 810 based on Foata normal form. 4/6613 useless extension candidates. Maximal degree in co-relation 58138. Up to 6201 conditions per place. [2024-06-14 13:14:12,517 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 485 selfloop transitions, 57 changer transitions 0/547 dead transitions. [2024-06-14 13:14:12,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 547 transitions, 8473 flow [2024-06-14 13:14:12,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:14:12,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:14:12,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-14 13:14:12,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-14 13:14:12,518 INFO L175 Difference]: Start difference. First operand has 382 places, 527 transitions, 7104 flow. Second operand 7 states and 133 transitions. [2024-06-14 13:14:12,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 547 transitions, 8473 flow [2024-06-14 13:14:14,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 547 transitions, 8328 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-14 13:14:14,545 INFO L231 Difference]: Finished difference. Result has 385 places, 533 transitions, 7288 flow [2024-06-14 13:14:14,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6959, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7288, PETRI_PLACES=385, PETRI_TRANSITIONS=533} [2024-06-14 13:14:14,545 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 342 predicate places. [2024-06-14 13:14:14,546 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 533 transitions, 7288 flow [2024-06-14 13:14:14,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:14:14,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:14:14,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:14:14,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 13:14:14,546 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)] === [2024-06-14 13:14:14,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:14:14,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1205565719, now seen corresponding path program 5 times [2024-06-14 13:14:14,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:14:14,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737269447] [2024-06-14 13:14:14,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:14:14,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:14:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:14:15,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:14:15,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:14:15,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737269447] [2024-06-14 13:14:15,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737269447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:14:15,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:14:15,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:14:15,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500128248] [2024-06-14 13:14:15,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:14:15,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:14:15,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:14:15,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:14:15,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:14:15,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:14:15,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 533 transitions, 7288 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:14:15,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:14:15,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:14:15,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:14:17,211 INFO L124 PetriNetUnfolderBase]: 4172/6660 cut-off events. [2024-06-14 13:14:17,212 INFO L125 PetriNetUnfolderBase]: For 787972/787972 co-relation queries the response was YES. [2024-06-14 13:14:17,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58898 conditions, 6660 events. 4172/6660 cut-off events. For 787972/787972 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 42630 event pairs, 813 based on Foata normal form. 12/6668 useless extension candidates. Maximal degree in co-relation 58713. Up to 6184 conditions per place. [2024-06-14 13:14:17,328 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 499 selfloop transitions, 49 changer transitions 0/553 dead transitions. [2024-06-14 13:14:17,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 553 transitions, 8633 flow [2024-06-14 13:14:17,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:14:17,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:14:17,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-14 13:14:17,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2024-06-14 13:14:17,330 INFO L175 Difference]: Start difference. First operand has 385 places, 533 transitions, 7288 flow. Second operand 7 states and 135 transitions. [2024-06-14 13:14:17,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 553 transitions, 8633 flow [2024-06-14 13:14:19,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 553 transitions, 8386 flow, removed 75 selfloop flow, removed 5 redundant places. [2024-06-14 13:14:19,436 INFO L231 Difference]: Finished difference. Result has 387 places, 535 transitions, 7241 flow [2024-06-14 13:14:19,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7043, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7241, PETRI_PLACES=387, PETRI_TRANSITIONS=535} [2024-06-14 13:14:19,436 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 344 predicate places. [2024-06-14 13:14:19,437 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 535 transitions, 7241 flow [2024-06-14 13:14:19,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:14:19,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:14:19,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:14:19,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 13:14:19,437 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)] === [2024-06-14 13:14:19,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:14:19,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1197284565, now seen corresponding path program 7 times [2024-06-14 13:14:19,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:14:19,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971575810] [2024-06-14 13:14:19,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:14:19,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:14:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:14:20,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:14:20,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:14:20,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971575810] [2024-06-14 13:14:20,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971575810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:14:20,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:14:20,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:14:20,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833203725] [2024-06-14 13:14:20,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:14:20,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:14:20,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:14:20,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:14:20,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:14:20,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:14:20,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 535 transitions, 7241 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:14:20,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:14:20,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:14:20,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:14:22,244 INFO L124 PetriNetUnfolderBase]: 4207/6717 cut-off events. [2024-06-14 13:14:22,245 INFO L125 PetriNetUnfolderBase]: For 763344/763344 co-relation queries the response was YES. [2024-06-14 13:14:22,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59418 conditions, 6717 events. 4207/6717 cut-off events. For 763344/763344 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 43013 event pairs, 817 based on Foata normal form. 6/6719 useless extension candidates. Maximal degree in co-relation 59232. Up to 6337 conditions per place. [2024-06-14 13:14:22,367 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 512 selfloop transitions, 44 changer transitions 0/561 dead transitions. [2024-06-14 13:14:22,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 561 transitions, 8716 flow [2024-06-14 13:14:22,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:14:22,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:14:22,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-14 13:14:22,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-14 13:14:22,368 INFO L175 Difference]: Start difference. First operand has 387 places, 535 transitions, 7241 flow. Second operand 8 states and 148 transitions. [2024-06-14 13:14:22,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 561 transitions, 8716 flow [2024-06-14 13:14:24,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 561 transitions, 8552 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-14 13:14:24,295 INFO L231 Difference]: Finished difference. Result has 391 places, 547 transitions, 7511 flow [2024-06-14 13:14:24,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7079, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7511, PETRI_PLACES=391, PETRI_TRANSITIONS=547} [2024-06-14 13:14:24,295 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 348 predicate places. [2024-06-14 13:14:24,296 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 547 transitions, 7511 flow [2024-06-14 13:14:24,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:14:24,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:14:24,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:14:24,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 13:14:24,296 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)] === [2024-06-14 13:14:24,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:14:24,297 INFO L85 PathProgramCache]: Analyzing trace with hash 969383415, now seen corresponding path program 8 times [2024-06-14 13:14:24,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:14:24,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699783780] [2024-06-14 13:14:24,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:14:24,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:14:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:14:25,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:14:25,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:14:25,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699783780] [2024-06-14 13:14:25,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699783780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:14:25,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:14:25,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:14:25,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207880855] [2024-06-14 13:14:25,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:14:25,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:14:25,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:14:25,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:14:25,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:14:25,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:14:25,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 547 transitions, 7511 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:14:25,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:14:25,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:14:25,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:14:27,074 INFO L124 PetriNetUnfolderBase]: 4237/6765 cut-off events. [2024-06-14 13:14:27,074 INFO L125 PetriNetUnfolderBase]: For 769715/769715 co-relation queries the response was YES. [2024-06-14 13:14:27,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60416 conditions, 6765 events. 4237/6765 cut-off events. For 769715/769715 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 43353 event pairs, 800 based on Foata normal form. 6/6769 useless extension candidates. Maximal degree in co-relation 60228. Up to 6033 conditions per place. [2024-06-14 13:14:27,180 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 454 selfloop transitions, 116 changer transitions 0/575 dead transitions. [2024-06-14 13:14:27,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 575 transitions, 9072 flow [2024-06-14 13:14:27,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:14:27,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:14:27,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-14 13:14:27,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46130952380952384 [2024-06-14 13:14:27,182 INFO L175 Difference]: Start difference. First operand has 391 places, 547 transitions, 7511 flow. Second operand 8 states and 155 transitions. [2024-06-14 13:14:27,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 575 transitions, 9072 flow [2024-06-14 13:14:29,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 575 transitions, 8772 flow, removed 114 selfloop flow, removed 5 redundant places. [2024-06-14 13:14:29,550 INFO L231 Difference]: Finished difference. Result has 394 places, 554 transitions, 7702 flow [2024-06-14 13:14:29,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7211, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7702, PETRI_PLACES=394, PETRI_TRANSITIONS=554} [2024-06-14 13:14:29,551 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 351 predicate places. [2024-06-14 13:14:29,551 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 554 transitions, 7702 flow [2024-06-14 13:14:29,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:14:29,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:14:29,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:14:29,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 13:14:29,551 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)] === [2024-06-14 13:14:29,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:14:29,552 INFO L85 PathProgramCache]: Analyzing trace with hash 969205785, now seen corresponding path program 9 times [2024-06-14 13:14:29,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:14:29,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146808760] [2024-06-14 13:14:29,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:14:29,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:14:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:14:30,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:14:30,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:14:30,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146808760] [2024-06-14 13:14:30,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146808760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:14:30,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:14:30,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:14:30,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187326390] [2024-06-14 13:14:30,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:14:30,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:14:30,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:14:30,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:14:30,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:14:30,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:14:30,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 554 transitions, 7702 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:14:30,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:14:30,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:14:30,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:14:32,366 INFO L124 PetriNetUnfolderBase]: 4261/6779 cut-off events. [2024-06-14 13:14:32,366 INFO L125 PetriNetUnfolderBase]: For 780518/780518 co-relation queries the response was YES. [2024-06-14 13:14:32,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61548 conditions, 6779 events. 4261/6779 cut-off events. For 780518/780518 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 43328 event pairs, 788 based on Foata normal form. 4/6781 useless extension candidates. Maximal degree in co-relation 61359. Up to 6090 conditions per place. [2024-06-14 13:14:32,474 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 479 selfloop transitions, 106 changer transitions 0/590 dead transitions. [2024-06-14 13:14:32,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 590 transitions, 9879 flow [2024-06-14 13:14:32,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:14:32,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:14:32,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-14 13:14:32,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-14 13:14:32,475 INFO L175 Difference]: Start difference. First operand has 394 places, 554 transitions, 7702 flow. Second operand 8 states and 163 transitions. [2024-06-14 13:14:32,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 590 transitions, 9879 flow [2024-06-14 13:14:34,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 590 transitions, 9438 flow, removed 105 selfloop flow, removed 6 redundant places. [2024-06-14 13:14:34,645 INFO L231 Difference]: Finished difference. Result has 397 places, 559 transitions, 7724 flow [2024-06-14 13:14:34,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7269, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7724, PETRI_PLACES=397, PETRI_TRANSITIONS=559} [2024-06-14 13:14:34,646 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 354 predicate places. [2024-06-14 13:14:34,647 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 559 transitions, 7724 flow [2024-06-14 13:14:34,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:14:34,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:14:34,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:14:34,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 13:14:34,647 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)] === [2024-06-14 13:14:34,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:14:34,647 INFO L85 PathProgramCache]: Analyzing trace with hash 969210435, now seen corresponding path program 10 times [2024-06-14 13:14:34,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:14:34,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101660864] [2024-06-14 13:14:34,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:14:34,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:14:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:14:35,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:14:35,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:14:35,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101660864] [2024-06-14 13:14:35,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101660864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:14:35,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:14:35,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:14:35,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952495846] [2024-06-14 13:14:35,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:14:35,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:14:35,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:14:35,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:14:35,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:14:35,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:14:35,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 559 transitions, 7724 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:14:35,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:14:35,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:14:35,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:14:37,663 INFO L124 PetriNetUnfolderBase]: 4283/6820 cut-off events. [2024-06-14 13:14:37,664 INFO L125 PetriNetUnfolderBase]: For 800473/800473 co-relation queries the response was YES. [2024-06-14 13:14:37,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61913 conditions, 6820 events. 4283/6820 cut-off events. For 800473/800473 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 43645 event pairs, 789 based on Foata normal form. 6/6824 useless extension candidates. Maximal degree in co-relation 61722. Up to 6098 conditions per place. [2024-06-14 13:14:37,761 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 463 selfloop transitions, 121 changer transitions 0/589 dead transitions. [2024-06-14 13:14:37,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 589 transitions, 9328 flow [2024-06-14 13:14:37,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:14:37,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:14:37,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-14 13:14:37,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2024-06-14 13:14:37,763 INFO L175 Difference]: Start difference. First operand has 397 places, 559 transitions, 7724 flow. Second operand 8 states and 158 transitions. [2024-06-14 13:14:37,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 589 transitions, 9328 flow [2024-06-14 13:14:40,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 589 transitions, 8856 flow, removed 87 selfloop flow, removed 6 redundant places. [2024-06-14 13:14:40,295 INFO L231 Difference]: Finished difference. Result has 399 places, 566 transitions, 7791 flow [2024-06-14 13:14:40,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7280, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7791, PETRI_PLACES=399, PETRI_TRANSITIONS=566} [2024-06-14 13:14:40,296 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 356 predicate places. [2024-06-14 13:14:40,296 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 566 transitions, 7791 flow [2024-06-14 13:14:40,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:14:40,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:14:40,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:14:40,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 13:14:40,297 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)] === [2024-06-14 13:14:40,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:14:40,297 INFO L85 PathProgramCache]: Analyzing trace with hash 2100260401, now seen corresponding path program 1 times [2024-06-14 13:14:40,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:14:40,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287395899] [2024-06-14 13:14:40,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:14:40,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:14:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:14:41,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:14:41,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:14:41,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287395899] [2024-06-14 13:14:41,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287395899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:14:41,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:14:41,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:14:41,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303481264] [2024-06-14 13:14:41,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:14:41,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:14:41,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:14:41,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:14:41,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:14:41,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:14:41,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 566 transitions, 7791 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:14:41,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:14:41,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:14:41,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:14:43,308 INFO L124 PetriNetUnfolderBase]: 4362/6933 cut-off events. [2024-06-14 13:14:43,308 INFO L125 PetriNetUnfolderBase]: For 849469/849469 co-relation queries the response was YES. [2024-06-14 13:14:43,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63967 conditions, 6933 events. 4362/6933 cut-off events. For 849469/849469 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 44270 event pairs, 814 based on Foata normal form. 3/6935 useless extension candidates. Maximal degree in co-relation 63777. Up to 6440 conditions per place. [2024-06-14 13:14:43,413 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 520 selfloop transitions, 96 changer transitions 0/621 dead transitions. [2024-06-14 13:14:43,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 621 transitions, 10027 flow [2024-06-14 13:14:43,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:14:43,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:14:43,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-14 13:14:43,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-14 13:14:43,415 INFO L175 Difference]: Start difference. First operand has 399 places, 566 transitions, 7791 flow. Second operand 10 states and 196 transitions. [2024-06-14 13:14:43,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 621 transitions, 10027 flow [2024-06-14 13:14:45,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 621 transitions, 9582 flow, removed 106 selfloop flow, removed 6 redundant places. [2024-06-14 13:14:45,809 INFO L231 Difference]: Finished difference. Result has 404 places, 588 transitions, 8271 flow [2024-06-14 13:14:45,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7346, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8271, PETRI_PLACES=404, PETRI_TRANSITIONS=588} [2024-06-14 13:14:45,809 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 361 predicate places. [2024-06-14 13:14:45,809 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 588 transitions, 8271 flow [2024-06-14 13:14:45,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:14:45,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:14:45,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:14:45,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 13:14:45,810 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)] === [2024-06-14 13:14:45,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:14:45,810 INFO L85 PathProgramCache]: Analyzing trace with hash 376540879, now seen corresponding path program 2 times [2024-06-14 13:14:45,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:14:45,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566787436] [2024-06-14 13:14:45,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:14:45,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:14:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:14:46,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:14:46,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:14:46,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566787436] [2024-06-14 13:14:46,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566787436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:14:46,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:14:46,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:14:46,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540773832] [2024-06-14 13:14:46,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:14:46,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:14:46,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:14:46,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:14:46,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:14:46,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:14:46,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 588 transitions, 8271 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:14:46,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:14:46,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:14:46,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:14:48,626 INFO L124 PetriNetUnfolderBase]: 4367/6944 cut-off events. [2024-06-14 13:14:48,627 INFO L125 PetriNetUnfolderBase]: For 858024/858024 co-relation queries the response was YES. [2024-06-14 13:14:48,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64444 conditions, 6944 events. 4367/6944 cut-off events. For 858024/858024 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 44321 event pairs, 828 based on Foata normal form. 1/6944 useless extension candidates. Maximal degree in co-relation 64252. Up to 6611 conditions per place. [2024-06-14 13:14:48,748 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 562 selfloop transitions, 47 changer transitions 0/614 dead transitions. [2024-06-14 13:14:48,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 614 transitions, 9871 flow [2024-06-14 13:14:48,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:14:48,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:14:48,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-14 13:14:48,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-14 13:14:48,764 INFO L175 Difference]: Start difference. First operand has 404 places, 588 transitions, 8271 flow. Second operand 9 states and 167 transitions. [2024-06-14 13:14:48,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 614 transitions, 9871 flow [2024-06-14 13:14:51,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 614 transitions, 9510 flow, removed 136 selfloop flow, removed 6 redundant places. [2024-06-14 13:14:51,799 INFO L231 Difference]: Finished difference. Result has 409 places, 593 transitions, 8150 flow [2024-06-14 13:14:51,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7914, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8150, PETRI_PLACES=409, PETRI_TRANSITIONS=593} [2024-06-14 13:14:51,799 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 366 predicate places. [2024-06-14 13:14:51,799 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 593 transitions, 8150 flow [2024-06-14 13:14:51,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:14:51,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:14:51,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:14:51,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 13:14:51,800 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)] === [2024-06-14 13:14:51,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:14:51,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1684633933, now seen corresponding path program 3 times [2024-06-14 13:14:51,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:14:51,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161774478] [2024-06-14 13:14:51,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:14:51,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:14:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:14:52,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:14:52,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:14:52,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161774478] [2024-06-14 13:14:52,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161774478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:14:52,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:14:52,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:14:52,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746897506] [2024-06-14 13:14:52,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:14:52,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:14:52,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:14:52,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:14:52,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:14:52,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:14:52,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 593 transitions, 8150 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:14:52,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:14:52,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:14:52,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:14:54,657 INFO L124 PetriNetUnfolderBase]: 4372/6959 cut-off events. [2024-06-14 13:14:54,658 INFO L125 PetriNetUnfolderBase]: For 871875/871875 co-relation queries the response was YES. [2024-06-14 13:14:54,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64483 conditions, 6959 events. 4372/6959 cut-off events. For 871875/871875 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 44469 event pairs, 833 based on Foata normal form. 1/6959 useless extension candidates. Maximal degree in co-relation 64287. Up to 6643 conditions per place. [2024-06-14 13:14:54,775 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 574 selfloop transitions, 36 changer transitions 0/615 dead transitions. [2024-06-14 13:14:54,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 615 transitions, 9559 flow [2024-06-14 13:14:54,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:14:54,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:14:54,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-14 13:14:54,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2024-06-14 13:14:54,777 INFO L175 Difference]: Start difference. First operand has 409 places, 593 transitions, 8150 flow. Second operand 9 states and 160 transitions. [2024-06-14 13:14:54,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 615 transitions, 9559 flow [2024-06-14 13:14:57,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 615 transitions, 9408 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-14 13:14:57,845 INFO L231 Difference]: Finished difference. Result has 415 places, 599 transitions, 8246 flow [2024-06-14 13:14:57,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8000, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8246, PETRI_PLACES=415, PETRI_TRANSITIONS=599} [2024-06-14 13:14:57,846 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 372 predicate places. [2024-06-14 13:14:57,846 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 599 transitions, 8246 flow [2024-06-14 13:14:57,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:14:57,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:14:57,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:14:57,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 13:14:57,847 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)] === [2024-06-14 13:14:57,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:14:57,847 INFO L85 PathProgramCache]: Analyzing trace with hash -137459289, now seen corresponding path program 4 times [2024-06-14 13:14:57,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:14:57,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310049932] [2024-06-14 13:14:57,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:14:57,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:14:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:14:58,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:14:58,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:14:58,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310049932] [2024-06-14 13:14:58,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310049932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:14:58,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:14:58,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:14:58,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056255356] [2024-06-14 13:14:58,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:14:58,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:14:58,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:14:58,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:14:58,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:14:58,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:14:58,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 599 transitions, 8246 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:14:58,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:14:58,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:14:58,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:15:00,606 INFO L124 PetriNetUnfolderBase]: 4449/7059 cut-off events. [2024-06-14 13:15:00,607 INFO L125 PetriNetUnfolderBase]: For 938034/938034 co-relation queries the response was YES. [2024-06-14 13:15:00,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66841 conditions, 7059 events. 4449/7059 cut-off events. For 938034/938034 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 45055 event pairs, 759 based on Foata normal form. 1/7058 useless extension candidates. Maximal degree in co-relation 66643. Up to 6309 conditions per place. [2024-06-14 13:15:00,732 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 504 selfloop transitions, 152 changer transitions 0/661 dead transitions. [2024-06-14 13:15:00,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 661 transitions, 11164 flow [2024-06-14 13:15:00,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:15:00,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:15:00,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-14 13:15:00,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-14 13:15:00,734 INFO L175 Difference]: Start difference. First operand has 415 places, 599 transitions, 8246 flow. Second operand 9 states and 182 transitions. [2024-06-14 13:15:00,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 661 transitions, 11164 flow [2024-06-14 13:15:03,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 661 transitions, 11008 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-14 13:15:03,815 INFO L231 Difference]: Finished difference. Result has 422 places, 628 transitions, 9148 flow [2024-06-14 13:15:03,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8090, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9148, PETRI_PLACES=422, PETRI_TRANSITIONS=628} [2024-06-14 13:15:03,815 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 379 predicate places. [2024-06-14 13:15:03,815 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 628 transitions, 9148 flow [2024-06-14 13:15:03,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:15:03,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:15:03,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:15:03,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 13:15:03,816 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)] === [2024-06-14 13:15:03,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:15:03,816 INFO L85 PathProgramCache]: Analyzing trace with hash 825951597, now seen corresponding path program 5 times [2024-06-14 13:15:03,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:15:03,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980558911] [2024-06-14 13:15:03,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:15:03,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:15:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:15:04,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:15:04,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:15:04,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980558911] [2024-06-14 13:15:04,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980558911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:15:04,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:15:04,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:15:04,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583832572] [2024-06-14 13:15:04,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:15:04,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:15:04,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:15:04,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:15:04,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:15:04,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:15:04,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 628 transitions, 9148 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:15:04,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:15:04,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:15:04,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:15:06,834 INFO L124 PetriNetUnfolderBase]: 4451/7064 cut-off events. [2024-06-14 13:15:06,834 INFO L125 PetriNetUnfolderBase]: For 953527/953527 co-relation queries the response was YES. [2024-06-14 13:15:06,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67761 conditions, 7064 events. 4451/7064 cut-off events. For 953527/953527 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 45087 event pairs, 762 based on Foata normal form. 2/7064 useless extension candidates. Maximal degree in co-relation 67559. Up to 6055 conditions per place. [2024-06-14 13:15:06,964 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 465 selfloop transitions, 188 changer transitions 0/658 dead transitions. [2024-06-14 13:15:06,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 658 transitions, 10779 flow [2024-06-14 13:15:06,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:15:06,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:15:06,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-14 13:15:06,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656084656084656 [2024-06-14 13:15:06,965 INFO L175 Difference]: Start difference. First operand has 422 places, 628 transitions, 9148 flow. Second operand 9 states and 176 transitions. [2024-06-14 13:15:06,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 658 transitions, 10779 flow [2024-06-14 13:15:10,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 658 transitions, 10503 flow, removed 73 selfloop flow, removed 4 redundant places. [2024-06-14 13:15:10,119 INFO L231 Difference]: Finished difference. Result has 427 places, 631 transitions, 9408 flow [2024-06-14 13:15:10,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8890, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9408, PETRI_PLACES=427, PETRI_TRANSITIONS=631} [2024-06-14 13:15:10,120 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 384 predicate places. [2024-06-14 13:15:10,120 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 631 transitions, 9408 flow [2024-06-14 13:15:10,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:15:10,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:15:10,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:15:10,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 13:15:10,120 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)] === [2024-06-14 13:15:10,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:15:10,121 INFO L85 PathProgramCache]: Analyzing trace with hash 829670667, now seen corresponding path program 6 times [2024-06-14 13:15:10,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:15:10,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380833108] [2024-06-14 13:15:10,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:15:10,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:15:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:15:11,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:15:11,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:15:11,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380833108] [2024-06-14 13:15:11,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380833108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:15:11,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:15:11,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:15:11,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140894533] [2024-06-14 13:15:11,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:15:11,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:15:11,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:15:11,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:15:11,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:15:11,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:15:11,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 631 transitions, 9408 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:15:11,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:15:11,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:15:11,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:15:13,265 INFO L124 PetriNetUnfolderBase]: 4461/7080 cut-off events. [2024-06-14 13:15:13,266 INFO L125 PetriNetUnfolderBase]: For 980244/980244 co-relation queries the response was YES. [2024-06-14 13:15:13,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68580 conditions, 7080 events. 4461/7080 cut-off events. For 980244/980244 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 45223 event pairs, 764 based on Foata normal form. 2/7080 useless extension candidates. Maximal degree in co-relation 68378. Up to 6551 conditions per place. [2024-06-14 13:15:13,386 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 566 selfloop transitions, 88 changer transitions 0/659 dead transitions. [2024-06-14 13:15:13,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 659 transitions, 10997 flow [2024-06-14 13:15:13,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:15:13,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:15:13,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-14 13:15:13,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 13:15:13,388 INFO L175 Difference]: Start difference. First operand has 427 places, 631 transitions, 9408 flow. Second operand 9 states and 168 transitions. [2024-06-14 13:15:13,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 659 transitions, 10997 flow [2024-06-14 13:15:16,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 659 transitions, 10457 flow, removed 86 selfloop flow, removed 7 redundant places. [2024-06-14 13:15:16,393 INFO L231 Difference]: Finished difference. Result has 429 places, 637 transitions, 9228 flow [2024-06-14 13:15:16,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8868, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9228, PETRI_PLACES=429, PETRI_TRANSITIONS=637} [2024-06-14 13:15:16,394 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 386 predicate places. [2024-06-14 13:15:16,394 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 637 transitions, 9228 flow [2024-06-14 13:15:16,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:15:16,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:15:16,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:15:16,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 13:15:16,395 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)] === [2024-06-14 13:15:16,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:15:16,395 INFO L85 PathProgramCache]: Analyzing trace with hash 472542475, now seen corresponding path program 7 times [2024-06-14 13:15:16,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:15:16,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337896733] [2024-06-14 13:15:16,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:15:16,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:15:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:15:17,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:15:17,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:15:17,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337896733] [2024-06-14 13:15:17,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337896733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:15:17,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:15:17,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:15:17,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143015526] [2024-06-14 13:15:17,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:15:17,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:15:17,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:15:17,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:15:17,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:15:17,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:15:17,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 637 transitions, 9228 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:15:17,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:15:17,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:15:17,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:15:19,375 INFO L124 PetriNetUnfolderBase]: 4546/7216 cut-off events. [2024-06-14 13:15:19,376 INFO L125 PetriNetUnfolderBase]: For 1048992/1048992 co-relation queries the response was YES. [2024-06-14 13:15:19,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70822 conditions, 7216 events. 4546/7216 cut-off events. For 1048992/1048992 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 46267 event pairs, 748 based on Foata normal form. 1/7215 useless extension candidates. Maximal degree in co-relation 70619. Up to 6026 conditions per place. [2024-06-14 13:15:19,498 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 454 selfloop transitions, 231 changer transitions 0/690 dead transitions. [2024-06-14 13:15:19,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 690 transitions, 12214 flow [2024-06-14 13:15:19,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:15:19,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:15:19,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-14 13:15:19,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-14 13:15:19,499 INFO L175 Difference]: Start difference. First operand has 429 places, 637 transitions, 9228 flow. Second operand 9 states and 182 transitions. [2024-06-14 13:15:19,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 690 transitions, 12214 flow [2024-06-14 13:15:22,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 690 transitions, 11930 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-06-14 13:15:22,749 INFO L231 Difference]: Finished difference. Result has 433 places, 656 transitions, 10147 flow [2024-06-14 13:15:22,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8944, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10147, PETRI_PLACES=433, PETRI_TRANSITIONS=656} [2024-06-14 13:15:22,749 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 390 predicate places. [2024-06-14 13:15:22,750 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 656 transitions, 10147 flow [2024-06-14 13:15:22,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:15:22,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:15:22,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:15:22,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 13:15:22,750 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)] === [2024-06-14 13:15:22,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:15:22,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1751917871, now seen corresponding path program 8 times [2024-06-14 13:15:22,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:15:22,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648654143] [2024-06-14 13:15:22,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:15:22,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:15:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:15:23,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:15:23,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:15:23,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648654143] [2024-06-14 13:15:23,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648654143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:15:23,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:15:23,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:15:23,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964139360] [2024-06-14 13:15:23,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:15:23,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:15:23,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:15:23,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:15:23,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:15:23,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:15:23,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 656 transitions, 10147 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:15:23,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:15:23,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:15:23,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:15:25,929 INFO L124 PetriNetUnfolderBase]: 4609/7292 cut-off events. [2024-06-14 13:15:25,929 INFO L125 PetriNetUnfolderBase]: For 1126010/1126010 co-relation queries the response was YES. [2024-06-14 13:15:26,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74199 conditions, 7292 events. 4609/7292 cut-off events. For 1126010/1126010 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 46543 event pairs, 746 based on Foata normal form. 3/7293 useless extension candidates. Maximal degree in co-relation 73993. Up to 6169 conditions per place. [2024-06-14 13:15:26,072 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 490 selfloop transitions, 212 changer transitions 0/707 dead transitions. [2024-06-14 13:15:26,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 707 transitions, 12601 flow [2024-06-14 13:15:26,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:15:26,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:15:26,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-14 13:15:26,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46904761904761905 [2024-06-14 13:15:26,074 INFO L175 Difference]: Start difference. First operand has 433 places, 656 transitions, 10147 flow. Second operand 10 states and 197 transitions. [2024-06-14 13:15:26,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 707 transitions, 12601 flow [2024-06-14 13:15:30,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 707 transitions, 12154 flow, removed 67 selfloop flow, removed 5 redundant places. [2024-06-14 13:15:30,427 INFO L231 Difference]: Finished difference. Result has 439 places, 673 transitions, 10808 flow [2024-06-14 13:15:30,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9715, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10808, PETRI_PLACES=439, PETRI_TRANSITIONS=673} [2024-06-14 13:15:30,428 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 396 predicate places. [2024-06-14 13:15:30,428 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 673 transitions, 10808 flow [2024-06-14 13:15:30,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:15:30,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:15:30,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:15:30,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 13:15:30,428 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)] === [2024-06-14 13:15:30,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:15:30,429 INFO L85 PathProgramCache]: Analyzing trace with hash -478398041, now seen corresponding path program 9 times [2024-06-14 13:15:30,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:15:30,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748105793] [2024-06-14 13:15:30,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:15:30,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:15:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:15:31,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:15:31,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:15:31,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748105793] [2024-06-14 13:15:31,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748105793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:15:31,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:15:31,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:15:31,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682584274] [2024-06-14 13:15:31,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:15:31,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:15:31,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:15:31,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:15:31,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:15:31,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:15:31,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 673 transitions, 10808 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:15:31,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:15:31,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:15:31,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:15:33,450 INFO L124 PetriNetUnfolderBase]: 4596/7277 cut-off events. [2024-06-14 13:15:33,450 INFO L125 PetriNetUnfolderBase]: For 1135621/1135621 co-relation queries the response was YES. [2024-06-14 13:15:33,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74425 conditions, 7277 events. 4596/7277 cut-off events. For 1135621/1135621 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 46547 event pairs, 747 based on Foata normal form. 3/7278 useless extension candidates. Maximal degree in co-relation 74217. Up to 6098 conditions per place. [2024-06-14 13:15:33,578 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 477 selfloop transitions, 222 changer transitions 0/704 dead transitions. [2024-06-14 13:15:33,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 704 transitions, 13060 flow [2024-06-14 13:15:33,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:15:33,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:15:33,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-14 13:15:33,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-14 13:15:33,580 INFO L175 Difference]: Start difference. First operand has 439 places, 673 transitions, 10808 flow. Second operand 9 states and 180 transitions. [2024-06-14 13:15:33,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 704 transitions, 13060 flow [2024-06-14 13:15:37,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 704 transitions, 12248 flow, removed 212 selfloop flow, removed 9 redundant places. [2024-06-14 13:15:37,816 INFO L231 Difference]: Finished difference. Result has 439 places, 673 transitions, 10460 flow [2024-06-14 13:15:37,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10008, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10460, PETRI_PLACES=439, PETRI_TRANSITIONS=673} [2024-06-14 13:15:37,817 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 396 predicate places. [2024-06-14 13:15:37,817 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 673 transitions, 10460 flow [2024-06-14 13:15:37,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:15:37,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:15:37,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:15:37,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 13:15:37,817 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)] === [2024-06-14 13:15:37,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:15:37,818 INFO L85 PathProgramCache]: Analyzing trace with hash -500276157, now seen corresponding path program 10 times [2024-06-14 13:15:37,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:15:37,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893947525] [2024-06-14 13:15:37,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:15:37,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:15:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:15:38,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:15:38,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:15:38,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893947525] [2024-06-14 13:15:38,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893947525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:15:38,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:15:38,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:15:38,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251606048] [2024-06-14 13:15:38,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:15:38,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:15:38,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:15:38,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:15:38,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:15:38,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:15:38,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 673 transitions, 10460 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:15:38,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:15:38,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:15:38,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:15:40,921 INFO L124 PetriNetUnfolderBase]: 4602/7281 cut-off events. [2024-06-14 13:15:40,921 INFO L125 PetriNetUnfolderBase]: For 1142740/1142740 co-relation queries the response was YES. [2024-06-14 13:15:41,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74031 conditions, 7281 events. 4602/7281 cut-off events. For 1142740/1142740 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 46512 event pairs, 752 based on Foata normal form. 6/7285 useless extension candidates. Maximal degree in co-relation 73824. Up to 6248 conditions per place. [2024-06-14 13:15:41,066 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 520 selfloop transitions, 179 changer transitions 0/704 dead transitions. [2024-06-14 13:15:41,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 704 transitions, 12210 flow [2024-06-14 13:15:41,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:15:41,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:15:41,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-14 13:15:41,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656084656084656 [2024-06-14 13:15:41,067 INFO L175 Difference]: Start difference. First operand has 439 places, 673 transitions, 10460 flow. Second operand 9 states and 176 transitions. [2024-06-14 13:15:41,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 704 transitions, 12210 flow [2024-06-14 13:15:44,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 704 transitions, 11768 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 13:15:44,290 INFO L231 Difference]: Finished difference. Result has 442 places, 677 transitions, 10538 flow [2024-06-14 13:15:44,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10028, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10538, PETRI_PLACES=442, PETRI_TRANSITIONS=677} [2024-06-14 13:15:44,290 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 399 predicate places. [2024-06-14 13:15:44,291 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 677 transitions, 10538 flow [2024-06-14 13:15:44,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:15:44,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:15:44,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:15:44,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 13:15:44,291 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)] === [2024-06-14 13:15:44,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:15:44,291 INFO L85 PathProgramCache]: Analyzing trace with hash -500267787, now seen corresponding path program 11 times [2024-06-14 13:15:44,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:15:44,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152212291] [2024-06-14 13:15:44,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:15:44,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:15:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:15:45,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:15:45,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:15:45,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152212291] [2024-06-14 13:15:45,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152212291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:15:45,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:15:45,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:15:45,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045223758] [2024-06-14 13:15:45,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:15:45,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:15:45,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:15:45,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:15:45,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:15:45,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:15:45,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 677 transitions, 10538 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:15:45,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:15:45,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:15:45,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:15:47,447 INFO L124 PetriNetUnfolderBase]: 4615/7305 cut-off events. [2024-06-14 13:15:47,447 INFO L125 PetriNetUnfolderBase]: For 1136587/1136587 co-relation queries the response was YES. [2024-06-14 13:15:47,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74074 conditions, 7305 events. 4615/7305 cut-off events. For 1136587/1136587 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 46654 event pairs, 746 based on Foata normal form. 3/7306 useless extension candidates. Maximal degree in co-relation 73866. Up to 6171 conditions per place. [2024-06-14 13:15:47,586 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 500 selfloop transitions, 211 changer transitions 0/716 dead transitions. [2024-06-14 13:15:47,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 716 transitions, 12578 flow [2024-06-14 13:15:47,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:15:47,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:15:47,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-14 13:15:47,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-14 13:15:47,587 INFO L175 Difference]: Start difference. First operand has 442 places, 677 transitions, 10538 flow. Second operand 10 states and 195 transitions. [2024-06-14 13:15:47,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 716 transitions, 12578 flow [2024-06-14 13:15:51,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 716 transitions, 12020 flow, removed 105 selfloop flow, removed 7 redundant places. [2024-06-14 13:15:51,730 INFO L231 Difference]: Finished difference. Result has 446 places, 684 transitions, 10621 flow [2024-06-14 13:15:51,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9980, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10621, PETRI_PLACES=446, PETRI_TRANSITIONS=684} [2024-06-14 13:15:51,730 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 403 predicate places. [2024-06-14 13:15:51,730 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 684 transitions, 10621 flow [2024-06-14 13:15:51,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:15:51,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:15:51,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:15:51,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 13:15:51,731 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)] === [2024-06-14 13:15:51,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:15:51,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1121218137, now seen corresponding path program 12 times [2024-06-14 13:15:51,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:15:51,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026243518] [2024-06-14 13:15:51,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:15:51,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:15:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:15:52,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:15:52,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:15:52,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026243518] [2024-06-14 13:15:52,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026243518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:15:52,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:15:52,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:15:52,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471517472] [2024-06-14 13:15:52,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:15:52,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:15:52,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:15:52,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:15:52,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:15:52,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:15:52,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 684 transitions, 10621 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:15:52,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:15:52,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:15:52,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:15:55,114 INFO L124 PetriNetUnfolderBase]: 4613/7311 cut-off events. [2024-06-14 13:15:55,115 INFO L125 PetriNetUnfolderBase]: For 1159095/1159095 co-relation queries the response was YES. [2024-06-14 13:15:55,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74207 conditions, 7311 events. 4613/7311 cut-off events. For 1159095/1159095 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 46771 event pairs, 765 based on Foata normal form. 6/7315 useless extension candidates. Maximal degree in co-relation 73997. Up to 6619 conditions per place. [2024-06-14 13:15:55,252 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 594 selfloop transitions, 114 changer transitions 0/713 dead transitions. [2024-06-14 13:15:55,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 713 transitions, 12293 flow [2024-06-14 13:15:55,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:15:55,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:15:55,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-14 13:15:55,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4458874458874459 [2024-06-14 13:15:55,253 INFO L175 Difference]: Start difference. First operand has 446 places, 684 transitions, 10621 flow. Second operand 11 states and 206 transitions. [2024-06-14 13:15:55,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 713 transitions, 12293 flow [2024-06-14 13:15:59,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 713 transitions, 11880 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-14 13:15:59,202 INFO L231 Difference]: Finished difference. Result has 450 places, 687 transitions, 10525 flow [2024-06-14 13:15:59,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10208, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10525, PETRI_PLACES=450, PETRI_TRANSITIONS=687} [2024-06-14 13:15:59,202 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 407 predicate places. [2024-06-14 13:15:59,203 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 687 transitions, 10525 flow [2024-06-14 13:15:59,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:15:59,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:15:59,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:15:59,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 13:15:59,203 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)] === [2024-06-14 13:15:59,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:15:59,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1112943927, now seen corresponding path program 13 times [2024-06-14 13:15:59,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:15:59,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631330534] [2024-06-14 13:15:59,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:15:59,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:15:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:16:00,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:16:00,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:16:00,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631330534] [2024-06-14 13:16:00,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631330534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:16:00,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:16:00,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:16:00,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561295947] [2024-06-14 13:16:00,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:16:00,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:16:00,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:16:00,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:16:00,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:16:00,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:16:00,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 687 transitions, 10525 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:16:00,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:16:00,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:16:00,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:16:02,523 INFO L124 PetriNetUnfolderBase]: 4595/7277 cut-off events. [2024-06-14 13:16:02,523 INFO L125 PetriNetUnfolderBase]: For 1132283/1132283 co-relation queries the response was YES. [2024-06-14 13:16:02,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72992 conditions, 7277 events. 4595/7277 cut-off events. For 1132283/1132283 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 46490 event pairs, 770 based on Foata normal form. 6/7281 useless extension candidates. Maximal degree in co-relation 72781. Up to 6595 conditions per place. [2024-06-14 13:16:02,662 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 595 selfloop transitions, 107 changer transitions 0/707 dead transitions. [2024-06-14 13:16:02,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 707 transitions, 12060 flow [2024-06-14 13:16:02,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:16:02,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:16:02,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-14 13:16:02,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-06-14 13:16:02,664 INFO L175 Difference]: Start difference. First operand has 450 places, 687 transitions, 10525 flow. Second operand 9 states and 172 transitions. [2024-06-14 13:16:02,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 707 transitions, 12060 flow [2024-06-14 13:16:07,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 707 transitions, 11651 flow, removed 78 selfloop flow, removed 10 redundant places. [2024-06-14 13:16:07,144 INFO L231 Difference]: Finished difference. Result has 449 places, 687 transitions, 10341 flow [2024-06-14 13:16:07,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10116, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10341, PETRI_PLACES=449, PETRI_TRANSITIONS=687} [2024-06-14 13:16:07,145 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 406 predicate places. [2024-06-14 13:16:07,145 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 687 transitions, 10341 flow [2024-06-14 13:16:07,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:16:07,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:16:07,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:16:07,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 13:16:07,146 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)] === [2024-06-14 13:16:07,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:16:07,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1112647257, now seen corresponding path program 14 times [2024-06-14 13:16:07,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:16:07,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270140324] [2024-06-14 13:16:07,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:16:07,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:16:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:16:08,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:16:08,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:16:08,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270140324] [2024-06-14 13:16:08,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270140324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:16:08,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:16:08,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:16:08,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148294881] [2024-06-14 13:16:08,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:16:08,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:16:08,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:16:08,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:16:08,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:16:08,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:16:08,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 687 transitions, 10341 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:16:08,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:16:08,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:16:08,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:16:10,386 INFO L124 PetriNetUnfolderBase]: 4582/7259 cut-off events. [2024-06-14 13:16:10,387 INFO L125 PetriNetUnfolderBase]: For 1108741/1108741 co-relation queries the response was YES. [2024-06-14 13:16:10,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72249 conditions, 7259 events. 4582/7259 cut-off events. For 1108741/1108741 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 46417 event pairs, 769 based on Foata normal form. 3/7260 useless extension candidates. Maximal degree in co-relation 72038. Up to 6439 conditions per place. [2024-06-14 13:16:10,521 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 560 selfloop transitions, 145 changer transitions 0/710 dead transitions. [2024-06-14 13:16:10,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 710 transitions, 12132 flow [2024-06-14 13:16:10,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:16:10,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:16:10,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-14 13:16:10,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45476190476190476 [2024-06-14 13:16:10,522 INFO L175 Difference]: Start difference. First operand has 449 places, 687 transitions, 10341 flow. Second operand 10 states and 191 transitions. [2024-06-14 13:16:10,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 710 transitions, 12132 flow [2024-06-14 13:16:14,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 710 transitions, 11863 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-14 13:16:14,845 INFO L231 Difference]: Finished difference. Result has 453 places, 687 transitions, 10381 flow [2024-06-14 13:16:14,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10072, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10381, PETRI_PLACES=453, PETRI_TRANSITIONS=687} [2024-06-14 13:16:14,846 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 410 predicate places. [2024-06-14 13:16:14,846 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 687 transitions, 10381 flow [2024-06-14 13:16:14,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:16:14,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:16:14,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:16:14,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 13:16:14,846 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)] === [2024-06-14 13:16:14,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:16:14,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1187161241, now seen corresponding path program 15 times [2024-06-14 13:16:14,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:16:14,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788201966] [2024-06-14 13:16:14,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:16:14,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:16:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:16:15,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:16:15,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:16:15,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788201966] [2024-06-14 13:16:15,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788201966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:16:15,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:16:15,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:16:15,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538267481] [2024-06-14 13:16:15,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:16:15,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:16:15,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:16:15,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:16:15,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:16:15,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:16:15,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 687 transitions, 10381 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:16:15,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:16:15,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:16:15,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:16:18,140 INFO L124 PetriNetUnfolderBase]: 4634/7334 cut-off events. [2024-06-14 13:16:18,141 INFO L125 PetriNetUnfolderBase]: For 1158351/1158351 co-relation queries the response was YES. [2024-06-14 13:16:18,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73364 conditions, 7334 events. 4634/7334 cut-off events. For 1158351/1158351 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 46944 event pairs, 808 based on Foata normal form. 9/7339 useless extension candidates. Maximal degree in co-relation 73152. Up to 6187 conditions per place. [2024-06-14 13:16:18,280 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 518 selfloop transitions, 222 changer transitions 0/745 dead transitions. [2024-06-14 13:16:18,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 745 transitions, 13148 flow [2024-06-14 13:16:18,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:16:18,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:16:18,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 191 transitions. [2024-06-14 13:16:18,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052910052910053 [2024-06-14 13:16:18,282 INFO L175 Difference]: Start difference. First operand has 453 places, 687 transitions, 10381 flow. Second operand 9 states and 191 transitions. [2024-06-14 13:16:18,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 745 transitions, 13148 flow [2024-06-14 13:16:22,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 745 transitions, 12667 flow, removed 123 selfloop flow, removed 8 redundant places. [2024-06-14 13:16:23,005 INFO L231 Difference]: Finished difference. Result has 457 places, 704 transitions, 11129 flow [2024-06-14 13:16:23,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9904, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11129, PETRI_PLACES=457, PETRI_TRANSITIONS=704} [2024-06-14 13:16:23,006 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 414 predicate places. [2024-06-14 13:16:23,006 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 704 transitions, 11129 flow [2024-06-14 13:16:23,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:16:23,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:16:23,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:16:23,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 13:16:23,007 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)] === [2024-06-14 13:16:23,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:16:23,008 INFO L85 PathProgramCache]: Analyzing trace with hash -27975955, now seen corresponding path program 16 times [2024-06-14 13:16:23,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:16:23,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716420870] [2024-06-14 13:16:23,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:16:23,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:16:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:16:23,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:16:23,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:16:23,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716420870] [2024-06-14 13:16:23,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716420870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:16:23,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:16:23,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:16:23,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580373777] [2024-06-14 13:16:23,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:16:23,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:16:23,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:16:23,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:16:23,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:16:23,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:16:23,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 704 transitions, 11129 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:16:23,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:16:23,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:16:23,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:16:26,191 INFO L124 PetriNetUnfolderBase]: 4624/7304 cut-off events. [2024-06-14 13:16:26,191 INFO L125 PetriNetUnfolderBase]: For 1111931/1111931 co-relation queries the response was YES. [2024-06-14 13:16:26,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74148 conditions, 7304 events. 4624/7304 cut-off events. For 1111931/1111931 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 46647 event pairs, 825 based on Foata normal form. 4/7306 useless extension candidates. Maximal degree in co-relation 73933. Up to 6728 conditions per place. [2024-06-14 13:16:26,336 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 626 selfloop transitions, 103 changer transitions 0/734 dead transitions. [2024-06-14 13:16:26,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 734 transitions, 13417 flow [2024-06-14 13:16:26,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:16:26,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:16:26,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-06-14 13:16:26,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-14 13:16:26,337 INFO L175 Difference]: Start difference. First operand has 457 places, 704 transitions, 11129 flow. Second operand 8 states and 167 transitions. [2024-06-14 13:16:26,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 734 transitions, 13417 flow [2024-06-14 13:16:31,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 734 transitions, 13059 flow, removed 157 selfloop flow, removed 5 redundant places. [2024-06-14 13:16:31,052 INFO L231 Difference]: Finished difference. Result has 460 places, 704 transitions, 11004 flow [2024-06-14 13:16:31,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10783, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11004, PETRI_PLACES=460, PETRI_TRANSITIONS=704} [2024-06-14 13:16:31,053 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 417 predicate places. [2024-06-14 13:16:31,053 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 704 transitions, 11004 flow [2024-06-14 13:16:31,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:16:31,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:16:31,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:16:31,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 13:16:31,053 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)] === [2024-06-14 13:16:31,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:16:31,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1745545905, now seen corresponding path program 1 times [2024-06-14 13:16:31,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:16:31,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475959317] [2024-06-14 13:16:31,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:16:31,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:16:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:16:31,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:16:31,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:16:31,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475959317] [2024-06-14 13:16:31,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475959317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:16:31,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:16:31,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:16:31,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710126902] [2024-06-14 13:16:31,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:16:31,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:16:31,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:16:31,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:16:31,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:16:31,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:16:31,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 704 transitions, 11004 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-14 13:16:31,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:16:31,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:16:31,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:16:34,106 INFO L124 PetriNetUnfolderBase]: 4626/7332 cut-off events. [2024-06-14 13:16:34,107 INFO L125 PetriNetUnfolderBase]: For 1071574/1071574 co-relation queries the response was YES. [2024-06-14 13:16:34,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73768 conditions, 7332 events. 4626/7332 cut-off events. For 1071574/1071574 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 46899 event pairs, 858 based on Foata normal form. 2/7333 useless extension candidates. Maximal degree in co-relation 73553. Up to 6885 conditions per place. [2024-06-14 13:16:34,259 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 652 selfloop transitions, 68 changer transitions 0/725 dead transitions. [2024-06-14 13:16:34,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 725 transitions, 12626 flow [2024-06-14 13:16:34,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:16:34,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:16:34,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-06-14 13:16:34,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503968253968254 [2024-06-14 13:16:34,260 INFO L175 Difference]: Start difference. First operand has 460 places, 704 transitions, 11004 flow. Second operand 6 states and 127 transitions. [2024-06-14 13:16:34,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 725 transitions, 12626 flow [2024-06-14 13:16:38,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 725 transitions, 12488 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-14 13:16:38,515 INFO L231 Difference]: Finished difference. Result has 461 places, 707 transitions, 11175 flow [2024-06-14 13:16:38,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10866, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=11175, PETRI_PLACES=461, PETRI_TRANSITIONS=707} [2024-06-14 13:16:38,515 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 418 predicate places. [2024-06-14 13:16:38,516 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 707 transitions, 11175 flow [2024-06-14 13:16:38,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-14 13:16:38,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:16:38,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:16:38,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 13:16:38,516 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)] === [2024-06-14 13:16:38,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:16:38,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1282183635, now seen corresponding path program 2 times [2024-06-14 13:16:38,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:16:38,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775562673] [2024-06-14 13:16:38,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:16:38,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:16:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:16:39,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:16:39,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:16:39,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775562673] [2024-06-14 13:16:39,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775562673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:16:39,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:16:39,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:16:39,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534468506] [2024-06-14 13:16:39,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:16:39,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:16:39,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:16:39,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:16:39,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:16:39,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:16:39,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 707 transitions, 11175 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-14 13:16:39,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:16:39,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:16:39,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:16:41,974 INFO L124 PetriNetUnfolderBase]: 4620/7308 cut-off events. [2024-06-14 13:16:41,974 INFO L125 PetriNetUnfolderBase]: For 1050431/1050431 co-relation queries the response was YES. [2024-06-14 13:16:42,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73638 conditions, 7308 events. 4620/7308 cut-off events. For 1050431/1050431 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 46696 event pairs, 762 based on Foata normal form. 2/7306 useless extension candidates. Maximal degree in co-relation 73424. Up to 6673 conditions per place. [2024-06-14 13:16:42,200 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 603 selfloop transitions, 119 changer transitions 0/727 dead transitions. [2024-06-14 13:16:42,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 727 transitions, 12815 flow [2024-06-14 13:16:42,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:16:42,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:16:42,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-06-14 13:16:42,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49603174603174605 [2024-06-14 13:16:42,201 INFO L175 Difference]: Start difference. First operand has 461 places, 707 transitions, 11175 flow. Second operand 6 states and 125 transitions. [2024-06-14 13:16:42,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 727 transitions, 12815 flow [2024-06-14 13:16:46,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 727 transitions, 12626 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-14 13:16:46,338 INFO L231 Difference]: Finished difference. Result has 463 places, 710 transitions, 11394 flow [2024-06-14 13:16:46,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10986, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=11394, PETRI_PLACES=463, PETRI_TRANSITIONS=710} [2024-06-14 13:16:46,339 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 420 predicate places. [2024-06-14 13:16:46,339 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 710 transitions, 11394 flow [2024-06-14 13:16:46,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-14 13:16:46,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:16:46,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:16:46,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-14 13:16:46,340 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)] === [2024-06-14 13:16:46,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:16:46,340 INFO L85 PathProgramCache]: Analyzing trace with hash -2139265299, now seen corresponding path program 17 times [2024-06-14 13:16:46,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:16:46,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527440016] [2024-06-14 13:16:46,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:16:46,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:16:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:16:47,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:16:47,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:16:47,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527440016] [2024-06-14 13:16:47,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527440016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:16:47,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:16:47,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:16:47,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844349526] [2024-06-14 13:16:47,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:16:47,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:16:47,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:16:47,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:16:47,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:16:47,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:16:47,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 710 transitions, 11394 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:16:47,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:16:47,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:16:47,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:16:49,795 INFO L124 PetriNetUnfolderBase]: 4614/7316 cut-off events. [2024-06-14 13:16:49,795 INFO L125 PetriNetUnfolderBase]: For 1065802/1065802 co-relation queries the response was YES. [2024-06-14 13:16:50,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73983 conditions, 7316 events. 4614/7316 cut-off events. For 1065802/1065802 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 46856 event pairs, 851 based on Foata normal form. 4/7319 useless extension candidates. Maximal degree in co-relation 73768. Up to 6913 conditions per place. [2024-06-14 13:16:50,046 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 674 selfloop transitions, 64 changer transitions 0/743 dead transitions. [2024-06-14 13:16:50,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 743 transitions, 13359 flow [2024-06-14 13:16:50,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:16:50,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:16:50,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-14 13:16:50,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2024-06-14 13:16:50,047 INFO L175 Difference]: Start difference. First operand has 463 places, 710 transitions, 11394 flow. Second operand 8 states and 165 transitions. [2024-06-14 13:16:50,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 743 transitions, 13359 flow [2024-06-14 13:16:54,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 743 transitions, 13055 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-14 13:16:54,369 INFO L231 Difference]: Finished difference. Result has 468 places, 715 transitions, 11414 flow [2024-06-14 13:16:54,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11090, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=646, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11414, PETRI_PLACES=468, PETRI_TRANSITIONS=715} [2024-06-14 13:16:54,369 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 425 predicate places. [2024-06-14 13:16:54,370 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 715 transitions, 11414 flow [2024-06-14 13:16:54,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:16:54,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:16:54,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:16:54,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-14 13:16:54,370 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)] === [2024-06-14 13:16:54,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:16:54,371 INFO L85 PathProgramCache]: Analyzing trace with hash 483059690, now seen corresponding path program 1 times [2024-06-14 13:16:54,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:16:54,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041520018] [2024-06-14 13:16:54,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:16:54,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:16:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:16:55,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:16:55,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:16:55,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041520018] [2024-06-14 13:16:55,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041520018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:16:55,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:16:55,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:16:55,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325795815] [2024-06-14 13:16:55,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:16:55,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:16:55,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:16:55,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:16:55,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:16:55,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:16:55,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 715 transitions, 11414 flow. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:16:55,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:16:55,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:16:55,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:16:58,214 INFO L124 PetriNetUnfolderBase]: 4805/7626 cut-off events. [2024-06-14 13:16:58,214 INFO L125 PetriNetUnfolderBase]: For 1301808/1301808 co-relation queries the response was YES. [2024-06-14 13:16:58,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79583 conditions, 7626 events. 4805/7626 cut-off events. For 1301808/1301808 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 49218 event pairs, 720 based on Foata normal form. 16/7640 useless extension candidates. Maximal degree in co-relation 79366. Up to 5733 conditions per place. [2024-06-14 13:16:58,361 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 524 selfloop transitions, 239 changer transitions 0/768 dead transitions. [2024-06-14 13:16:58,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 768 transitions, 14500 flow [2024-06-14 13:16:58,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:16:58,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:16:58,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions. [2024-06-14 13:16:58,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49047619047619045 [2024-06-14 13:16:58,363 INFO L175 Difference]: Start difference. First operand has 468 places, 715 transitions, 11414 flow. Second operand 10 states and 206 transitions. [2024-06-14 13:16:58,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 768 transitions, 14500 flow [2024-06-14 13:17:03,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 768 transitions, 14252 flow, removed 85 selfloop flow, removed 4 redundant places. [2024-06-14 13:17:03,291 INFO L231 Difference]: Finished difference. Result has 475 places, 720 transitions, 11839 flow [2024-06-14 13:17:03,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11174, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=235, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11839, PETRI_PLACES=475, PETRI_TRANSITIONS=720} [2024-06-14 13:17:03,292 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 432 predicate places. [2024-06-14 13:17:03,292 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 720 transitions, 11839 flow [2024-06-14 13:17:03,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:17:03,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:17:03,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:17:03,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-14 13:17:03,292 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)] === [2024-06-14 13:17:03,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:17:03,293 INFO L85 PathProgramCache]: Analyzing trace with hash -478387036, now seen corresponding path program 2 times [2024-06-14 13:17:03,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:17:03,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467422539] [2024-06-14 13:17:03,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:17:03,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:17:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:17:04,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:17:04,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:17:04,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467422539] [2024-06-14 13:17:04,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467422539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:17:04,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:17:04,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:17:04,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600672813] [2024-06-14 13:17:04,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:17:04,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:17:04,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:17:04,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:17:04,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:17:04,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:17:04,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 720 transitions, 11839 flow. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:17:04,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:17:04,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:17:04,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:17:07,190 INFO L124 PetriNetUnfolderBase]: 5002/7918 cut-off events. [2024-06-14 13:17:07,190 INFO L125 PetriNetUnfolderBase]: For 1482613/1482613 co-relation queries the response was YES. [2024-06-14 13:17:07,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86624 conditions, 7918 events. 5002/7918 cut-off events. For 1482613/1482613 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 51356 event pairs, 860 based on Foata normal form. 16/7931 useless extension candidates. Maximal degree in co-relation 86405. Up to 6491 conditions per place. [2024-06-14 13:17:07,357 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 525 selfloop transitions, 234 changer transitions 0/764 dead transitions. [2024-06-14 13:17:07,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 764 transitions, 14573 flow [2024-06-14 13:17:07,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:17:07,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:17:07,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-14 13:17:07,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-14 13:17:07,359 INFO L175 Difference]: Start difference. First operand has 475 places, 720 transitions, 11839 flow. Second operand 10 states and 200 transitions. [2024-06-14 13:17:07,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 764 transitions, 14573 flow [2024-06-14 13:17:12,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 764 transitions, 14208 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-14 13:17:12,308 INFO L231 Difference]: Finished difference. Result has 481 places, 724 transitions, 12121 flow [2024-06-14 13:17:12,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11478, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=720, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12121, PETRI_PLACES=481, PETRI_TRANSITIONS=724} [2024-06-14 13:17:12,309 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 438 predicate places. [2024-06-14 13:17:12,309 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 724 transitions, 12121 flow [2024-06-14 13:17:12,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:17:12,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:17:12,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:17:12,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-14 13:17:12,310 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)] === [2024-06-14 13:17:12,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:17:12,310 INFO L85 PathProgramCache]: Analyzing trace with hash 484937360, now seen corresponding path program 3 times [2024-06-14 13:17:12,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:17:12,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149831093] [2024-06-14 13:17:12,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:17:12,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:17:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:17:13,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:17:13,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:17:13,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149831093] [2024-06-14 13:17:13,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149831093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:17:13,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:17:13,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:17:13,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610150297] [2024-06-14 13:17:13,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:17:13,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:17:13,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:17:13,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:17:13,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:17:13,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:17:13,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 724 transitions, 12121 flow. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:17:13,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:17:13,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:17:13,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:17:16,239 INFO L124 PetriNetUnfolderBase]: 5015/7945 cut-off events. [2024-06-14 13:17:16,239 INFO L125 PetriNetUnfolderBase]: For 1462460/1462460 co-relation queries the response was YES. [2024-06-14 13:17:16,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85963 conditions, 7945 events. 5015/7945 cut-off events. For 1462460/1462460 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 51556 event pairs, 869 based on Foata normal form. 20/7962 useless extension candidates. Maximal degree in co-relation 85741. Up to 6715 conditions per place. [2024-06-14 13:17:16,543 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 518 selfloop transitions, 238 changer transitions 0/761 dead transitions. [2024-06-14 13:17:16,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 761 transitions, 14442 flow [2024-06-14 13:17:16,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:17:16,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:17:16,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-14 13:17:16,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46904761904761905 [2024-06-14 13:17:16,545 INFO L175 Difference]: Start difference. First operand has 481 places, 724 transitions, 12121 flow. Second operand 10 states and 197 transitions. [2024-06-14 13:17:16,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 761 transitions, 14442 flow [2024-06-14 13:17:21,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 761 transitions, 14083 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-14 13:17:22,005 INFO L231 Difference]: Finished difference. Result has 485 places, 726 transitions, 12337 flow [2024-06-14 13:17:22,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11762, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12337, PETRI_PLACES=485, PETRI_TRANSITIONS=726} [2024-06-14 13:17:22,006 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 442 predicate places. [2024-06-14 13:17:22,006 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 726 transitions, 12337 flow [2024-06-14 13:17:22,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:17:22,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:17:22,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:17:22,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-14 13:17:22,007 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)] === [2024-06-14 13:17:22,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:17:22,007 INFO L85 PathProgramCache]: Analyzing trace with hash 571779272, now seen corresponding path program 1 times [2024-06-14 13:17:22,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:17:22,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218865685] [2024-06-14 13:17:22,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:17:22,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:17:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:17:23,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:17:23,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:17:23,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218865685] [2024-06-14 13:17:23,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218865685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:17:23,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:17:23,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:17:23,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455094474] [2024-06-14 13:17:23,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:17:23,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:17:23,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:17:23,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:17:23,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:17:23,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:17:23,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 726 transitions, 12337 flow. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:17:23,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:17:23,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:17:23,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:17:25,935 INFO L124 PetriNetUnfolderBase]: 5110/8096 cut-off events. [2024-06-14 13:17:25,936 INFO L125 PetriNetUnfolderBase]: For 1474273/1474273 co-relation queries the response was YES. [2024-06-14 13:17:26,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88820 conditions, 8096 events. 5110/8096 cut-off events. For 1474273/1474273 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 52707 event pairs, 871 based on Foata normal form. 16/8107 useless extension candidates. Maximal degree in co-relation 88596. Up to 6841 conditions per place. [2024-06-14 13:17:26,095 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 554 selfloop transitions, 215 changer transitions 0/774 dead transitions. [2024-06-14 13:17:26,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 774 transitions, 15299 flow [2024-06-14 13:17:26,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:17:26,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:17:26,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-14 13:17:26,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-14 13:17:26,096 INFO L175 Difference]: Start difference. First operand has 485 places, 726 transitions, 12337 flow. Second operand 9 states and 182 transitions. [2024-06-14 13:17:26,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 774 transitions, 15299 flow [2024-06-14 13:17:31,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 774 transitions, 14759 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-14 13:17:31,779 INFO L231 Difference]: Finished difference. Result has 489 places, 738 transitions, 13014 flow [2024-06-14 13:17:31,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11809, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13014, PETRI_PLACES=489, PETRI_TRANSITIONS=738} [2024-06-14 13:17:31,779 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 446 predicate places. [2024-06-14 13:17:31,779 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 738 transitions, 13014 flow [2024-06-14 13:17:31,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:17:31,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:17:31,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:17:31,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-14 13:17:31,780 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)] === [2024-06-14 13:17:31,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:17:31,780 INFO L85 PathProgramCache]: Analyzing trace with hash -391547356, now seen corresponding path program 4 times [2024-06-14 13:17:31,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:17:31,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412954314] [2024-06-14 13:17:31,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:17:31,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:17:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:17:32,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:17:32,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:17:32,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412954314] [2024-06-14 13:17:32,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412954314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:17:32,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:17:32,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:17:32,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594133391] [2024-06-14 13:17:32,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:17:32,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:17:32,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:17:32,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:17:32,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:17:32,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:17:32,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 738 transitions, 13014 flow. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:17:32,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:17:32,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:17:32,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:17:35,732 INFO L124 PetriNetUnfolderBase]: 5182/8220 cut-off events. [2024-06-14 13:17:35,733 INFO L125 PetriNetUnfolderBase]: For 1565273/1565273 co-relation queries the response was YES. [2024-06-14 13:17:35,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91227 conditions, 8220 events. 5182/8220 cut-off events. For 1565273/1565273 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 53670 event pairs, 925 based on Foata normal form. 20/8237 useless extension candidates. Maximal degree in co-relation 90999. Up to 7377 conditions per place. [2024-06-14 13:17:35,887 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 630 selfloop transitions, 136 changer transitions 0/771 dead transitions. [2024-06-14 13:17:35,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 771 transitions, 15123 flow [2024-06-14 13:17:35,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:17:35,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:17:35,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-14 13:17:35,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45476190476190476 [2024-06-14 13:17:35,889 INFO L175 Difference]: Start difference. First operand has 489 places, 738 transitions, 13014 flow. Second operand 10 states and 191 transitions. [2024-06-14 13:17:35,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 771 transitions, 15123 flow [2024-06-14 13:17:41,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 771 transitions, 14755 flow, removed 138 selfloop flow, removed 3 redundant places. [2024-06-14 13:17:41,725 INFO L231 Difference]: Finished difference. Result has 497 places, 742 transitions, 13062 flow [2024-06-14 13:17:41,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12646, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13062, PETRI_PLACES=497, PETRI_TRANSITIONS=742} [2024-06-14 13:17:41,726 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 454 predicate places. [2024-06-14 13:17:41,726 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 742 transitions, 13062 flow [2024-06-14 13:17:41,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:17:41,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:17:41,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:17:41,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-14 13:17:41,727 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)] === [2024-06-14 13:17:41,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:17:41,727 INFO L85 PathProgramCache]: Analyzing trace with hash -391695226, now seen corresponding path program 5 times [2024-06-14 13:17:41,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:17:41,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846378510] [2024-06-14 13:17:41,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:17:41,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:17:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:17:42,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:17:42,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:17:42,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846378510] [2024-06-14 13:17:42,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846378510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:17:42,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:17:42,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:17:42,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682548994] [2024-06-14 13:17:42,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:17:42,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:17:42,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:17:42,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:17:42,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:17:42,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:17:42,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 742 transitions, 13062 flow. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:17:42,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:17:42,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:17:42,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:17:46,525 INFO L124 PetriNetUnfolderBase]: 5951/9427 cut-off events. [2024-06-14 13:17:46,525 INFO L125 PetriNetUnfolderBase]: For 2572181/2572181 co-relation queries the response was YES. [2024-06-14 13:17:46,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115574 conditions, 9427 events. 5951/9427 cut-off events. For 2572181/2572181 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 62282 event pairs, 1108 based on Foata normal form. 56/9480 useless extension candidates. Maximal degree in co-relation 115343. Up to 6889 conditions per place. [2024-06-14 13:17:46,706 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 584 selfloop transitions, 208 changer transitions 0/797 dead transitions. [2024-06-14 13:17:46,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 797 transitions, 16105 flow [2024-06-14 13:17:46,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:17:46,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:17:46,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2024-06-14 13:17:46,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-06-14 13:17:46,708 INFO L175 Difference]: Start difference. First operand has 497 places, 742 transitions, 13062 flow. Second operand 10 states and 205 transitions. [2024-06-14 13:17:46,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 797 transitions, 16105 flow [2024-06-14 13:17:53,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 797 transitions, 15782 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-14 13:17:53,520 INFO L231 Difference]: Finished difference. Result has 502 places, 747 transitions, 13413 flow [2024-06-14 13:17:53,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12749, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13413, PETRI_PLACES=502, PETRI_TRANSITIONS=747} [2024-06-14 13:17:53,520 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 459 predicate places. [2024-06-14 13:17:53,520 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 747 transitions, 13413 flow [2024-06-14 13:17:53,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:17:53,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:17:53,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:17:53,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-14 13:17:53,521 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)] === [2024-06-14 13:17:53,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:17:53,521 INFO L85 PathProgramCache]: Analyzing trace with hash 571629170, now seen corresponding path program 6 times [2024-06-14 13:17:53,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:17:53,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142772119] [2024-06-14 13:17:53,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:17:53,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:17:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:17:54,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:17:54,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:17:54,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142772119] [2024-06-14 13:17:54,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142772119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:17:54,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:17:54,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:17:54,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521556099] [2024-06-14 13:17:54,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:17:54,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:17:54,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:17:54,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:17:54,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:17:54,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:17:54,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 747 transitions, 13413 flow. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:17:54,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:17:54,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:17:54,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:17:58,659 INFO L124 PetriNetUnfolderBase]: 6069/9625 cut-off events. [2024-06-14 13:17:58,660 INFO L125 PetriNetUnfolderBase]: For 2565956/2565956 co-relation queries the response was YES. [2024-06-14 13:17:58,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115485 conditions, 9625 events. 6069/9625 cut-off events. For 2565956/2565956 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 63533 event pairs, 1314 based on Foata normal form. 68/9690 useless extension candidates. Maximal degree in co-relation 115252. Up to 7994 conditions per place. [2024-06-14 13:17:58,835 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 553 selfloop transitions, 212 changer transitions 21/791 dead transitions. [2024-06-14 13:17:58,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 791 transitions, 15598 flow [2024-06-14 13:17:58,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:17:58,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:17:58,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-06-14 13:17:58,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675324675324675 [2024-06-14 13:17:58,837 INFO L175 Difference]: Start difference. First operand has 502 places, 747 transitions, 13413 flow. Second operand 11 states and 216 transitions. [2024-06-14 13:17:58,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 791 transitions, 15598 flow [2024-06-14 13:18:06,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 791 transitions, 15209 flow, removed 68 selfloop flow, removed 6 redundant places. [2024-06-14 13:18:06,452 INFO L231 Difference]: Finished difference. Result has 509 places, 734 transitions, 13465 flow [2024-06-14 13:18:06,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13026, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13465, PETRI_PLACES=509, PETRI_TRANSITIONS=734} [2024-06-14 13:18:06,453 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 466 predicate places. [2024-06-14 13:18:06,453 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 734 transitions, 13465 flow [2024-06-14 13:18:06,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:18:06,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:18:06,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:18:06,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-14 13:18:06,454 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)] === [2024-06-14 13:18:06,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:18:06,454 INFO L85 PathProgramCache]: Analyzing trace with hash -143597564, now seen corresponding path program 2 times [2024-06-14 13:18:06,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:18:06,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046177573] [2024-06-14 13:18:06,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:18:06,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:18:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:18:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:18:07,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:18:07,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046177573] [2024-06-14 13:18:07,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046177573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:18:07,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:18:07,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:18:07,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779029032] [2024-06-14 13:18:07,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:18:07,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:18:07,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:18:07,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:18:07,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:18:07,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:18:07,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 734 transitions, 13465 flow. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:18:07,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:18:07,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:18:07,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:18:11,469 INFO L124 PetriNetUnfolderBase]: 5941/9437 cut-off events. [2024-06-14 13:18:11,469 INFO L125 PetriNetUnfolderBase]: For 2219044/2219044 co-relation queries the response was YES. [2024-06-14 13:18:11,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114747 conditions, 9437 events. 5941/9437 cut-off events. For 2219044/2219044 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 62512 event pairs, 1312 based on Foata normal form. 16/9448 useless extension candidates. Maximal degree in co-relation 114510. Up to 8594 conditions per place. [2024-06-14 13:18:11,688 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 624 selfloop transitions, 146 changer transitions 0/775 dead transitions. [2024-06-14 13:18:11,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 775 transitions, 16196 flow [2024-06-14 13:18:11,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:18:11,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:18:11,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-14 13:18:11,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4588744588744589 [2024-06-14 13:18:11,690 INFO L175 Difference]: Start difference. First operand has 509 places, 734 transitions, 13465 flow. Second operand 11 states and 212 transitions. [2024-06-14 13:18:11,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 775 transitions, 16196 flow