./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix040_power.oepc_pso.oepc_rmo.oepc.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/mix040_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/mix040_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 12:28:53,371 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 12:28:53,435 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 12:28:53,439 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 12:28:53,439 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 12:28:53,473 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 12:28:53,474 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 12:28:53,474 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 12:28:53,474 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 12:28:53,475 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 12:28:53,475 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 12:28:53,475 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 12:28:53,475 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 12:28:53,476 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 12:28:53,476 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 12:28:53,476 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 12:28:53,476 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 12:28:53,477 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 12:28:53,477 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 12:28:53,477 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 12:28:53,477 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 12:28:53,481 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 12:28:53,481 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 12:28:53,481 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 12:28:53,492 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 12:28:53,492 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 12:28:53,492 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 12:28:53,492 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 12:28:53,498 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 12:28:53,498 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 12:28:53,499 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 12:28:53,499 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 12:28:53,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:28:53,499 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 12:28:53,499 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 12:28:53,499 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 12:28:53,500 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 12:28:53,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 12:28:53,500 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 12:28:53,500 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 12:28:53,500 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 12:28:53,500 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 12:28:53,500 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 12:28:53,501 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 12:28:53,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 12:28:53,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 12:28:53,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 12:28:53,728 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 12:28:53,728 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 12:28:53,729 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix040_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-14 12:28:53,889 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 12:28:53,889 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 12:28:53,890 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i [2024-06-14 12:28:54,948 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 12:28:55,179 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 12:28:55,182 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i [2024-06-14 12:28:55,200 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ebcd97c8/94171c6fad354c6e95f0a31b45b07973/FLAG34406433d [2024-06-14 12:28:55,213 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ebcd97c8/94171c6fad354c6e95f0a31b45b07973 [2024-06-14 12:28:55,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 12:28:55,214 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 12:28:55,218 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 12:28:55,218 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 12:28:55,221 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 12:28:55,222 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:28:53" (1/2) ... [2024-06-14 12:28:55,223 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f7b93a4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:28:55, skipping insertion in model container [2024-06-14 12:28:55,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:28:53" (1/2) ... [2024-06-14 12:28:55,225 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@21164edf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:28:55, skipping insertion in model container [2024-06-14 12:28:55,225 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:28:55" (2/2) ... [2024-06-14 12:28:55,225 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f7b93a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:28:55, skipping insertion in model container [2024-06-14 12:28:55,226 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:28:55" (2/2) ... [2024-06-14 12:28:55,226 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 12:28:55,318 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 12:28:55,319 INFO L97 edCorrectnessWitness]: Location invariant before [L872-L872] ((((((((((((((((((((((! multithreaded || ((0 <= b$w_buff1 && b$w_buff1 <= 1) && (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || ((0 <= b$mem_tmp && b$mem_tmp <= 1) && (b$mem_tmp == 0 || b$mem_tmp == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= b$w_buff0 && b$w_buff0 <= 1) && (b$w_buff0 == 0 || b$w_buff0 == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0) [2024-06-14 12:28:55,320 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] ((((((((((((((((((((((! multithreaded || ((0 <= b$w_buff1 && b$w_buff1 <= 1) && (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || ((0 <= b$mem_tmp && b$mem_tmp <= 1) && (b$mem_tmp == 0 || b$mem_tmp == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= b$w_buff0 && b$w_buff0 <= 1) && (b$w_buff0 == 0 || b$w_buff0 == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0) [2024-06-14 12:28:55,320 INFO L97 edCorrectnessWitness]: Location invariant before [L877-L877] ((((((((((((((((((((((! multithreaded || ((0 <= b$w_buff1 && b$w_buff1 <= 1) && (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || ((0 <= b$mem_tmp && b$mem_tmp <= 1) && (b$mem_tmp == 0 || b$mem_tmp == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= b$w_buff0 && b$w_buff0 <= 1) && (b$w_buff0 == 0 || b$w_buff0 == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0) [2024-06-14 12:28:55,320 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] ((((((((((((((((((((((! multithreaded || ((0 <= b$w_buff1 && b$w_buff1 <= 1) && (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || ((0 <= b$mem_tmp && b$mem_tmp <= 1) && (b$mem_tmp == 0 || b$mem_tmp == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= b$w_buff0 && b$w_buff0 <= 1) && (b$w_buff0 == 0 || b$w_buff0 == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0) [2024-06-14 12:28:55,320 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 12:28:55,320 INFO L106 edCorrectnessWitness]: ghost_update [L870-L870] multithreaded = 1; [2024-06-14 12:28:55,374 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 12:28:55,697 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:28:55,709 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 12:28:55,832 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:28:55,884 INFO L206 MainTranslator]: Completed translation [2024-06-14 12:28:55,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:28:55 WrapperNode [2024-06-14 12:28:55,885 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 12:28:55,886 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 12:28:55,886 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 12:28:55,886 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 12:28:55,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:28:55" (1/1) ... [2024-06-14 12:28:55,919 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:28:55" (1/1) ... [2024-06-14 12:28:55,953 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 139 [2024-06-14 12:28:55,954 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 12:28:55,972 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 12:28:55,972 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 12:28:55,972 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 12:28:55,982 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:28:55" (1/1) ... [2024-06-14 12:28:55,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:28:55" (1/1) ... [2024-06-14 12:28:55,993 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:28:55" (1/1) ... [2024-06-14 12:28:56,008 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 12:28:56,008 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:28:55" (1/1) ... [2024-06-14 12:28:56,009 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:28:55" (1/1) ... [2024-06-14 12:28:56,018 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:28:55" (1/1) ... [2024-06-14 12:28:56,029 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:28:55" (1/1) ... [2024-06-14 12:28:56,031 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:28:55" (1/1) ... [2024-06-14 12:28:56,032 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:28:55" (1/1) ... [2024-06-14 12:28:56,035 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 12:28:56,036 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 12:28:56,036 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 12:28:56,036 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 12:28:56,036 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:28:55" (1/1) ... [2024-06-14 12:28:56,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:28:56,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 12:28:56,068 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 12:28:56,073 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 12:28:56,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 12:28:56,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 12:28:56,098 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 12:28:56,098 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 12:28:56,098 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 12:28:56,098 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 12:28:56,098 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-14 12:28:56,099 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-14 12:28:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-14 12:28:56,099 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-14 12:28:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 12:28:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 12:28:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 12:28:56,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 12:28:56,102 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 12:28:56,202 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 12:28:56,204 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 12:28:56,570 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 12:28:56,571 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 12:28:56,711 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 12:28:56,711 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 12:28:56,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:28:56 BoogieIcfgContainer [2024-06-14 12:28:56,712 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 12:28:56,714 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 12:28:56,714 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 12:28:56,716 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 12:28:56,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:28:53" (1/4) ... [2024-06-14 12:28:56,717 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7fedfd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 12:28:56, skipping insertion in model container [2024-06-14 12:28:56,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 12:28:55" (2/4) ... [2024-06-14 12:28:56,717 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7fedfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:28:56, skipping insertion in model container [2024-06-14 12:28:56,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:28:55" (3/4) ... [2024-06-14 12:28:56,717 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7fedfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:28:56, skipping insertion in model container [2024-06-14 12:28:56,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:28:56" (4/4) ... [2024-06-14 12:28:56,718 INFO L112 eAbstractionObserver]: Analyzing ICFG mix040_power.oepc_pso.oepc_rmo.oepc.i [2024-06-14 12:28:56,731 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 12:28:56,732 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-14 12:28:56,732 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 12:28:56,791 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 12:28:56,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 54 transitions, 124 flow [2024-06-14 12:28:56,850 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2024-06-14 12:28:56,851 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:28:56,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 0/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 12:28:56,853 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 54 transitions, 124 flow [2024-06-14 12:28:56,857 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 44 transitions, 100 flow [2024-06-14 12:28:56,867 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 12:28:56,874 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;@6fa922c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 12:28:56,874 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-14 12:28:56,877 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 12:28:56,877 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 12:28:56,877 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:28:56,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:28:56,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 12:28:56,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:28:56,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:28:56,882 INFO L85 PathProgramCache]: Analyzing trace with hash -302346635, now seen corresponding path program 1 times [2024-06-14 12:28:56,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:28:56,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153970687] [2024-06-14 12:28:56,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:28:56,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:28:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:28:57,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:28:57,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:28:57,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153970687] [2024-06-14 12:28:57,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153970687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:28:57,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:28:57,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 12:28:57,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284472010] [2024-06-14 12:28:57,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:28:57,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 12:28:57,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:28:57,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 12:28:57,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 12:28:57,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 12:28:57,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:28:57,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:28:57,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 12:28:57,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:28:59,911 INFO L124 PetriNetUnfolderBase]: 13331/18440 cut-off events. [2024-06-14 12:28:59,911 INFO L125 PetriNetUnfolderBase]: For 219/219 co-relation queries the response was YES. [2024-06-14 12:28:59,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36890 conditions, 18440 events. 13331/18440 cut-off events. For 219/219 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 101320 event pairs, 10516 based on Foata normal form. 1/18003 useless extension candidates. Maximal degree in co-relation 36874. Up to 17985 conditions per place. [2024-06-14 12:29:00,007 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 47 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-14 12:29:00,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 241 flow [2024-06-14 12:29:00,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 12:29:00,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 12:29:00,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-06-14 12:29:00,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5864197530864198 [2024-06-14 12:29:00,019 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 100 flow. Second operand 3 states and 95 transitions. [2024-06-14 12:29:00,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 241 flow [2024-06-14 12:29:00,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 58 transitions, 234 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-14 12:29:00,023 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 135 flow [2024-06-14 12:29:00,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-14 12:29:00,027 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -1 predicate places. [2024-06-14 12:29:00,027 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 135 flow [2024-06-14 12:29:00,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:00,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:29:00,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:29:00,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 12:29:00,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:29:00,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:29:00,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1502713620, now seen corresponding path program 1 times [2024-06-14 12:29:00,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:29:00,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251972954] [2024-06-14 12:29:00,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:29:00,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:29:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:29:00,746 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 12:29:00,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:29:00,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251972954] [2024-06-14 12:29:00,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251972954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:29:00,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:29:00,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 12:29:00,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233872096] [2024-06-14 12:29:00,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:29:00,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 12:29:00,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:29:00,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 12:29:00,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-14 12:29:00,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 12:29:00,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:00,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:29:00,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 12:29:00,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:29:02,673 INFO L124 PetriNetUnfolderBase]: 13321/18426 cut-off events. [2024-06-14 12:29:02,674 INFO L125 PetriNetUnfolderBase]: For 3250/3250 co-relation queries the response was YES. [2024-06-14 12:29:02,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41337 conditions, 18426 events. 13321/18426 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 101419 event pairs, 9607 based on Foata normal form. 4/18211 useless extension candidates. Maximal degree in co-relation 41322. Up to 17950 conditions per place. [2024-06-14 12:29:02,778 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 57 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2024-06-14 12:29:02,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 72 transitions, 333 flow [2024-06-14 12:29:02,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 12:29:02,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 12:29:02,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-06-14 12:29:02,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5648148148148148 [2024-06-14 12:29:02,781 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 135 flow. Second operand 4 states and 122 transitions. [2024-06-14 12:29:02,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 72 transitions, 333 flow [2024-06-14 12:29:02,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 72 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 12:29:02,786 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 183 flow [2024-06-14 12:29:02,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2024-06-14 12:29:02,787 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2024-06-14 12:29:02,788 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 183 flow [2024-06-14 12:29:02,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:02,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:29:02,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:29:02,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 12:29:02,791 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:29:02,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:29:02,797 INFO L85 PathProgramCache]: Analyzing trace with hash -660516296, now seen corresponding path program 1 times [2024-06-14 12:29:02,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:29:02,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214567442] [2024-06-14 12:29:02,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:29:02,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:29:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:29:03,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:29:03,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:29:03,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214567442] [2024-06-14 12:29:03,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214567442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:29:03,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:29:03,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 12:29:03,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060166569] [2024-06-14 12:29:03,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:29:03,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 12:29:03,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:29:03,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 12:29:03,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-14 12:29:03,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 12:29:03,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 183 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:03,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:29:03,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 12:29:03,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:29:05,437 INFO L124 PetriNetUnfolderBase]: 13339/18520 cut-off events. [2024-06-14 12:29:05,437 INFO L125 PetriNetUnfolderBase]: For 9399/9399 co-relation queries the response was YES. [2024-06-14 12:29:05,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45923 conditions, 18520 events. 13339/18520 cut-off events. For 9399/9399 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 102341 event pairs, 8101 based on Foata normal form. 7/18322 useless extension candidates. Maximal degree in co-relation 45906. Up to 17871 conditions per place. [2024-06-14 12:29:05,523 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 75 selfloop transitions, 21 changer transitions 0/102 dead transitions. [2024-06-14 12:29:05,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 102 transitions, 549 flow [2024-06-14 12:29:05,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:29:05,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:29:05,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-06-14 12:29:05,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-06-14 12:29:05,525 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 183 flow. Second operand 5 states and 159 transitions. [2024-06-14 12:29:05,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 102 transitions, 549 flow [2024-06-14 12:29:05,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 102 transitions, 530 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-14 12:29:05,529 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 314 flow [2024-06-14 12:29:05,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=314, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2024-06-14 12:29:05,530 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2024-06-14 12:29:05,530 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 314 flow [2024-06-14 12:29:05,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:05,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:29:05,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:29:05,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 12:29:05,531 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:29:05,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:29:05,531 INFO L85 PathProgramCache]: Analyzing trace with hash 998833075, now seen corresponding path program 1 times [2024-06-14 12:29:05,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:29:05,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619083774] [2024-06-14 12:29:05,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:29:05,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:29:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:29:06,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:29:06,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:29:06,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619083774] [2024-06-14 12:29:06,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619083774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:29:06,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:29:06,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:29:06,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172729835] [2024-06-14 12:29:06,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:29:06,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:29:06,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:29:06,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:29:06,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:29:06,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 12:29:06,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 314 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:06,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:29:06,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 12:29:06,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:29:08,478 INFO L124 PetriNetUnfolderBase]: 13357/18544 cut-off events. [2024-06-14 12:29:08,479 INFO L125 PetriNetUnfolderBase]: For 22031/22036 co-relation queries the response was YES. [2024-06-14 12:29:08,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52902 conditions, 18544 events. 13357/18544 cut-off events. For 22031/22036 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 102413 event pairs, 7192 based on Foata normal form. 11/18350 useless extension candidates. Maximal degree in co-relation 52882. Up to 17857 conditions per place. [2024-06-14 12:29:08,623 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 85 selfloop transitions, 26 changer transitions 0/117 dead transitions. [2024-06-14 12:29:08,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 117 transitions, 718 flow [2024-06-14 12:29:08,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:29:08,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:29:08,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2024-06-14 12:29:08,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5771604938271605 [2024-06-14 12:29:08,627 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 314 flow. Second operand 6 states and 187 transitions. [2024-06-14 12:29:08,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 117 transitions, 718 flow [2024-06-14 12:29:08,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 117 transitions, 706 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-14 12:29:08,639 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 408 flow [2024-06-14 12:29:08,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=408, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2024-06-14 12:29:08,641 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 13 predicate places. [2024-06-14 12:29:08,641 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 408 flow [2024-06-14 12:29:08,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:08,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:29:08,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:29:08,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 12:29:08,642 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:29:08,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:29:08,643 INFO L85 PathProgramCache]: Analyzing trace with hash 899056055, now seen corresponding path program 1 times [2024-06-14 12:29:08,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:29:08,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194234185] [2024-06-14 12:29:08,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:29:08,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:29:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:29:09,743 INFO 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 12:29:09,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:29:09,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194234185] [2024-06-14 12:29:09,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194234185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:29:09,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:29:09,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:29:09,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016009689] [2024-06-14 12:29:09,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:29:09,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:29:09,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:29:09,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:29:09,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:29:09,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 12:29:09,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 408 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:09,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:29:09,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 12:29:09,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:29:11,524 INFO L124 PetriNetUnfolderBase]: 13386/18594 cut-off events. [2024-06-14 12:29:11,524 INFO L125 PetriNetUnfolderBase]: For 34962/34967 co-relation queries the response was YES. [2024-06-14 12:29:11,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58376 conditions, 18594 events. 13386/18594 cut-off events. For 34962/34967 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 102862 event pairs, 6159 based on Foata normal form. 18/18407 useless extension candidates. Maximal degree in co-relation 58353. Up to 17822 conditions per place. [2024-06-14 12:29:11,642 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 92 selfloop transitions, 30 changer transitions 0/128 dead transitions. [2024-06-14 12:29:11,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 128 transitions, 862 flow [2024-06-14 12:29:11,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:29:11,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:29:11,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 211 transitions. [2024-06-14 12:29:11,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5582010582010583 [2024-06-14 12:29:11,644 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 408 flow. Second operand 7 states and 211 transitions. [2024-06-14 12:29:11,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 128 transitions, 862 flow [2024-06-14 12:29:11,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 128 transitions, 796 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-14 12:29:11,656 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 447 flow [2024-06-14 12:29:11,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=447, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2024-06-14 12:29:11,657 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2024-06-14 12:29:11,657 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 447 flow [2024-06-14 12:29:11,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:11,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:29:11,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:29:11,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 12:29:11,658 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:29:11,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:29:11,658 INFO L85 PathProgramCache]: Analyzing trace with hash -248758412, now seen corresponding path program 1 times [2024-06-14 12:29:11,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:29:11,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430321634] [2024-06-14 12:29:11,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:29:11,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:29:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:29:12,343 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 12:29:12,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:29:12,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430321634] [2024-06-14 12:29:12,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430321634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:29:12,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:29:12,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:29:12,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667781016] [2024-06-14 12:29:12,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:29:12,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:29:12,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:29:12,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:29:12,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:29:12,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:29:12,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 447 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:12,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:29:12,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:29:12,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:29:14,115 INFO L124 PetriNetUnfolderBase]: 13377/18559 cut-off events. [2024-06-14 12:29:14,115 INFO L125 PetriNetUnfolderBase]: For 49374/49374 co-relation queries the response was YES. [2024-06-14 12:29:14,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62616 conditions, 18559 events. 13377/18559 cut-off events. For 49374/49374 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 102433 event pairs, 7117 based on Foata normal form. 3/18349 useless extension candidates. Maximal degree in co-relation 62592. Up to 18037 conditions per place. [2024-06-14 12:29:14,230 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 75 selfloop transitions, 10 changer transitions 0/91 dead transitions. [2024-06-14 12:29:14,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 91 transitions, 661 flow [2024-06-14 12:29:14,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:29:14,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:29:14,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-14 12:29:14,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-14 12:29:14,232 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 447 flow. Second operand 5 states and 125 transitions. [2024-06-14 12:29:14,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 91 transitions, 661 flow [2024-06-14 12:29:14,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 91 transitions, 574 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-14 12:29:14,247 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 391 flow [2024-06-14 12:29:14,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=391, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2024-06-14 12:29:14,247 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2024-06-14 12:29:14,247 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 391 flow [2024-06-14 12:29:14,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:14,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:29:14,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:29:14,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 12:29:14,248 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:29:14,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:29:14,249 INFO L85 PathProgramCache]: Analyzing trace with hash 850720236, now seen corresponding path program 1 times [2024-06-14 12:29:14,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:29:14,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983713696] [2024-06-14 12:29:14,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:29:14,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:29:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:29:15,055 INFO 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 12:29:15,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:29:15,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983713696] [2024-06-14 12:29:15,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983713696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:29:15,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:29:15,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:29:15,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918610723] [2024-06-14 12:29:15,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:29:15,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:29:15,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:29:15,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:29:15,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:29:15,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:29:15,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 391 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 12:29:15,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:29:15,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:29:15,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:29:16,958 INFO L124 PetriNetUnfolderBase]: 13443/18867 cut-off events. [2024-06-14 12:29:16,958 INFO L125 PetriNetUnfolderBase]: For 58024/58024 co-relation queries the response was YES. [2024-06-14 12:29:17,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64047 conditions, 18867 events. 13443/18867 cut-off events. For 58024/58024 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 106308 event pairs, 6711 based on Foata normal form. 14/18856 useless extension candidates. Maximal degree in co-relation 64021. Up to 17913 conditions per place. [2024-06-14 12:29:17,091 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 93 selfloop transitions, 22 changer transitions 0/121 dead transitions. [2024-06-14 12:29:17,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 121 transitions, 845 flow [2024-06-14 12:29:17,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:29:17,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:29:17,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-14 12:29:17,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49691358024691357 [2024-06-14 12:29:17,093 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 391 flow. Second operand 6 states and 161 transitions. [2024-06-14 12:29:17,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 121 transitions, 845 flow [2024-06-14 12:29:17,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 121 transitions, 816 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 12:29:17,110 INFO L231 Difference]: Finished difference. Result has 76 places, 88 transitions, 548 flow [2024-06-14 12:29:17,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=548, PETRI_PLACES=76, PETRI_TRANSITIONS=88} [2024-06-14 12:29:17,111 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2024-06-14 12:29:17,111 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 88 transitions, 548 flow [2024-06-14 12:29:17,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 12:29:17,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:29:17,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:29:17,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 12:29:17,112 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:29:17,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:29:17,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1065939585, now seen corresponding path program 1 times [2024-06-14 12:29:17,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:29:17,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847828632] [2024-06-14 12:29:17,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:29:17,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:29:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:29:17,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:29:17,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:29:17,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847828632] [2024-06-14 12:29:17,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847828632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:29:17,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:29:17,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:29:17,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026718591] [2024-06-14 12:29:17,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:29:17,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:29:17,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:29:17,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:29:17,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:29:18,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:29:18,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 88 transitions, 548 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 12:29:18,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:29:18,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:29:18,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:29:19,810 INFO L124 PetriNetUnfolderBase]: 13456/18891 cut-off events. [2024-06-14 12:29:19,811 INFO L125 PetriNetUnfolderBase]: For 81429/81439 co-relation queries the response was YES. [2024-06-14 12:29:20,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71123 conditions, 18891 events. 13456/18891 cut-off events. For 81429/81439 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 106475 event pairs, 6894 based on Foata normal form. 14/18879 useless extension candidates. Maximal degree in co-relation 71095. Up to 18027 conditions per place. [2024-06-14 12:29:20,127 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 91 selfloop transitions, 25 changer transitions 0/122 dead transitions. [2024-06-14 12:29:20,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 122 transitions, 929 flow [2024-06-14 12:29:20,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:29:20,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:29:20,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-06-14 12:29:20,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876543209876543 [2024-06-14 12:29:20,129 INFO L175 Difference]: Start difference. First operand has 76 places, 88 transitions, 548 flow. Second operand 6 states and 158 transitions. [2024-06-14 12:29:20,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 122 transitions, 929 flow [2024-06-14 12:29:20,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 122 transitions, 901 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-14 12:29:20,164 INFO L231 Difference]: Finished difference. Result has 81 places, 92 transitions, 616 flow [2024-06-14 12:29:20,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=616, PETRI_PLACES=81, PETRI_TRANSITIONS=92} [2024-06-14 12:29:20,165 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 24 predicate places. [2024-06-14 12:29:20,165 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 92 transitions, 616 flow [2024-06-14 12:29:20,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 12:29:20,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:29:20,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:29:20,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 12:29:20,166 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:29:20,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:29:20,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1461392211, now seen corresponding path program 2 times [2024-06-14 12:29:20,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:29:20,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834700404] [2024-06-14 12:29:20,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:29:20,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:29:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:29:20,922 INFO 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 12:29:20,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:29:20,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834700404] [2024-06-14 12:29:20,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834700404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:29:20,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:29:20,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:29:20,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495846163] [2024-06-14 12:29:20,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:29:20,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:29:20,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:29:20,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:29:20,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:29:21,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:29:21,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 92 transitions, 616 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 12:29:21,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:29:21,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:29:21,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:29:23,007 INFO L124 PetriNetUnfolderBase]: 13426/18844 cut-off events. [2024-06-14 12:29:23,007 INFO L125 PetriNetUnfolderBase]: For 89766/89766 co-relation queries the response was YES. [2024-06-14 12:29:23,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71712 conditions, 18844 events. 13426/18844 cut-off events. For 89766/89766 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 106183 event pairs, 6887 based on Foata normal form. 3/18822 useless extension candidates. Maximal degree in co-relation 71681. Up to 18083 conditions per place. [2024-06-14 12:29:23,108 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 96 selfloop transitions, 14 changer transitions 0/116 dead transitions. [2024-06-14 12:29:23,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 116 transitions, 898 flow [2024-06-14 12:29:23,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:29:23,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:29:23,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-14 12:29:23,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-06-14 12:29:23,110 INFO L175 Difference]: Start difference. First operand has 81 places, 92 transitions, 616 flow. Second operand 6 states and 148 transitions. [2024-06-14 12:29:23,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 116 transitions, 898 flow [2024-06-14 12:29:23,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 116 transitions, 855 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-14 12:29:23,147 INFO L231 Difference]: Finished difference. Result has 84 places, 92 transitions, 612 flow [2024-06-14 12:29:23,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=612, PETRI_PLACES=84, PETRI_TRANSITIONS=92} [2024-06-14 12:29:23,147 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 27 predicate places. [2024-06-14 12:29:23,148 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 92 transitions, 612 flow [2024-06-14 12:29:23,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 12:29:23,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:29:23,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:29:23,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 12:29:23,148 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:29:23,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:29:23,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1321049453, now seen corresponding path program 1 times [2024-06-14 12:29:23,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:29:23,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208208234] [2024-06-14 12:29:23,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:29:23,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:29:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:29:24,037 INFO 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 12:29:24,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:29:24,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208208234] [2024-06-14 12:29:24,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208208234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:29:24,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:29:24,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:29:24,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406458309] [2024-06-14 12:29:24,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:29:24,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:29:24,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:29:24,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:29:24,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:29:24,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:29:24,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 92 transitions, 612 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:24,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:29:24,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:29:24,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:29:26,326 INFO L124 PetriNetUnfolderBase]: 14250/19876 cut-off events. [2024-06-14 12:29:26,327 INFO L125 PetriNetUnfolderBase]: For 108177/108183 co-relation queries the response was YES. [2024-06-14 12:29:26,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77463 conditions, 19876 events. 14250/19876 cut-off events. For 108177/108183 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 110908 event pairs, 5968 based on Foata normal form. 29/19865 useless extension candidates. Maximal degree in co-relation 77431. Up to 18100 conditions per place. [2024-06-14 12:29:26,472 INFO L140 encePairwiseOnDemand]: 38/54 looper letters, 123 selfloop transitions, 41 changer transitions 0/170 dead transitions. [2024-06-14 12:29:26,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 170 transitions, 1434 flow [2024-06-14 12:29:26,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:29:26,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:29:26,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-06-14 12:29:26,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5264550264550265 [2024-06-14 12:29:26,474 INFO L175 Difference]: Start difference. First operand has 84 places, 92 transitions, 612 flow. Second operand 7 states and 199 transitions. [2024-06-14 12:29:26,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 170 transitions, 1434 flow [2024-06-14 12:29:26,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 170 transitions, 1374 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 12:29:26,514 INFO L231 Difference]: Finished difference. Result has 88 places, 117 transitions, 918 flow [2024-06-14 12:29:26,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=918, PETRI_PLACES=88, PETRI_TRANSITIONS=117} [2024-06-14 12:29:26,514 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 31 predicate places. [2024-06-14 12:29:26,515 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 117 transitions, 918 flow [2024-06-14 12:29:26,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:26,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:29:26,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:29:26,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 12:29:26,516 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:29:26,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:29:26,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1941242519, now seen corresponding path program 2 times [2024-06-14 12:29:26,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:29:26,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458754319] [2024-06-14 12:29:26,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:29:26,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:29:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:29:27,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:29:27,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:29:27,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458754319] [2024-06-14 12:29:27,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458754319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:29:27,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:29:27,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:29:27,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811628172] [2024-06-14 12:29:27,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:29:27,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:29:27,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:29:27,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:29:27,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:29:27,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:29:27,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 117 transitions, 918 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:27,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:29:27,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:29:27,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:29:30,209 INFO L124 PetriNetUnfolderBase]: 14378/20094 cut-off events. [2024-06-14 12:29:30,210 INFO L125 PetriNetUnfolderBase]: For 148610/148620 co-relation queries the response was YES. [2024-06-14 12:29:30,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90114 conditions, 20094 events. 14378/20094 cut-off events. For 148610/148620 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 112676 event pairs, 6408 based on Foata normal form. 14/20055 useless extension candidates. Maximal degree in co-relation 90078. Up to 19211 conditions per place. [2024-06-14 12:29:30,356 INFO L140 encePairwiseOnDemand]: 39/54 looper letters, 132 selfloop transitions, 27 changer transitions 0/165 dead transitions. [2024-06-14 12:29:30,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 165 transitions, 1518 flow [2024-06-14 12:29:30,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:29:30,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:29:30,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-14 12:29:30,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-14 12:29:30,358 INFO L175 Difference]: Start difference. First operand has 88 places, 117 transitions, 918 flow. Second operand 7 states and 182 transitions. [2024-06-14 12:29:30,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 165 transitions, 1518 flow [2024-06-14 12:29:30,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 165 transitions, 1460 flow, removed 28 selfloop flow, removed 1 redundant places. [2024-06-14 12:29:30,447 INFO L231 Difference]: Finished difference. Result has 97 places, 128 transitions, 1074 flow [2024-06-14 12:29:30,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1074, PETRI_PLACES=97, PETRI_TRANSITIONS=128} [2024-06-14 12:29:30,447 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 40 predicate places. [2024-06-14 12:29:30,448 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 128 transitions, 1074 flow [2024-06-14 12:29:30,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:30,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:29:30,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:29:30,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 12:29:30,449 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:29:30,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:29:30,449 INFO L85 PathProgramCache]: Analyzing trace with hash -479798657, now seen corresponding path program 3 times [2024-06-14 12:29:30,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:29:30,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050532321] [2024-06-14 12:29:30,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:29:30,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:29:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:29:31,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:29:31,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:29:31,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050532321] [2024-06-14 12:29:31,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050532321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:29:31,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:29:31,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:29:31,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844714079] [2024-06-14 12:29:31,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:29:31,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:29:31,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:29:31,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:29:31,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:29:31,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:29:31,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 128 transitions, 1074 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:31,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:29:31,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:29:31,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:29:33,588 INFO L124 PetriNetUnfolderBase]: 14444/20187 cut-off events. [2024-06-14 12:29:33,588 INFO L125 PetriNetUnfolderBase]: For 172097/172097 co-relation queries the response was YES. [2024-06-14 12:29:33,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93446 conditions, 20187 events. 14444/20187 cut-off events. For 172097/172097 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 113194 event pairs, 6410 based on Foata normal form. 14/20153 useless extension candidates. Maximal degree in co-relation 93404. Up to 19086 conditions per place. [2024-06-14 12:29:33,767 INFO L140 encePairwiseOnDemand]: 39/54 looper letters, 137 selfloop transitions, 36 changer transitions 0/179 dead transitions. [2024-06-14 12:29:33,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 179 transitions, 1776 flow [2024-06-14 12:29:33,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:29:33,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:29:33,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-14 12:29:33,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947089947089947 [2024-06-14 12:29:33,769 INFO L175 Difference]: Start difference. First operand has 97 places, 128 transitions, 1074 flow. Second operand 7 states and 187 transitions. [2024-06-14 12:29:33,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 179 transitions, 1776 flow [2024-06-14 12:29:33,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 179 transitions, 1706 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-14 12:29:33,890 INFO L231 Difference]: Finished difference. Result has 102 places, 138 transitions, 1233 flow [2024-06-14 12:29:33,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1233, PETRI_PLACES=102, PETRI_TRANSITIONS=138} [2024-06-14 12:29:33,891 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 45 predicate places. [2024-06-14 12:29:33,891 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 138 transitions, 1233 flow [2024-06-14 12:29:33,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:33,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:29:33,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:29:33,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 12:29:33,892 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:29:33,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:29:33,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1498427051, now seen corresponding path program 1 times [2024-06-14 12:29:33,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:29:33,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898653464] [2024-06-14 12:29:33,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:29:33,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:29:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:29:35,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:29:35,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:29:35,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898653464] [2024-06-14 12:29:35,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898653464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:29:35,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:29:35,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:29:35,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6525164] [2024-06-14 12:29:35,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:29:35,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:29:35,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:29:35,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:29:35,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:29:35,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:29:35,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 138 transitions, 1233 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:35,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:29:35,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:29:35,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:29:37,703 INFO L124 PetriNetUnfolderBase]: 14625/20441 cut-off events. [2024-06-14 12:29:37,703 INFO L125 PetriNetUnfolderBase]: For 204907/204907 co-relation queries the response was YES. [2024-06-14 12:29:37,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98478 conditions, 20441 events. 14625/20441 cut-off events. For 204907/204907 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 114706 event pairs, 6271 based on Foata normal form. 30/20420 useless extension candidates. Maximal degree in co-relation 98434. Up to 19275 conditions per place. [2024-06-14 12:29:37,909 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 146 selfloop transitions, 34 changer transitions 0/186 dead transitions. [2024-06-14 12:29:37,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 186 transitions, 1859 flow [2024-06-14 12:29:37,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:29:37,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:29:37,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-14 12:29:37,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-14 12:29:37,911 INFO L175 Difference]: Start difference. First operand has 102 places, 138 transitions, 1233 flow. Second operand 7 states and 189 transitions. [2024-06-14 12:29:37,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 186 transitions, 1859 flow [2024-06-14 12:29:38,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 186 transitions, 1789 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-14 12:29:38,055 INFO L231 Difference]: Finished difference. Result has 106 places, 141 transitions, 1290 flow [2024-06-14 12:29:38,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1290, PETRI_PLACES=106, PETRI_TRANSITIONS=141} [2024-06-14 12:29:38,055 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 49 predicate places. [2024-06-14 12:29:38,055 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 141 transitions, 1290 flow [2024-06-14 12:29:38,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:38,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:29:38,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:29:38,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 12:29:38,056 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:29:38,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:29:38,057 INFO L85 PathProgramCache]: Analyzing trace with hash 56932895, now seen corresponding path program 1 times [2024-06-14 12:29:38,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:29:38,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271385260] [2024-06-14 12:29:38,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:29:38,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:29:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:29:38,694 INFO 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 12:29:38,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:29:38,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271385260] [2024-06-14 12:29:38,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271385260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:29:38,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:29:38,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:29:38,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454000115] [2024-06-14 12:29:38,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:29:38,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:29:38,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:29:38,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:29:38,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:29:38,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:29:38,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 141 transitions, 1290 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:38,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:29:38,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:29:38,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:29:41,178 INFO L124 PetriNetUnfolderBase]: 14611/20429 cut-off events. [2024-06-14 12:29:41,178 INFO L125 PetriNetUnfolderBase]: For 228447/228447 co-relation queries the response was YES. [2024-06-14 12:29:41,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101768 conditions, 20429 events. 14611/20429 cut-off events. For 228447/228447 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 114748 event pairs, 6435 based on Foata normal form. 4/20384 useless extension candidates. Maximal degree in co-relation 101722. Up to 19684 conditions per place. [2024-06-14 12:29:41,340 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 136 selfloop transitions, 13 changer transitions 0/155 dead transitions. [2024-06-14 12:29:41,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 155 transitions, 1624 flow [2024-06-14 12:29:41,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:29:41,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:29:41,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-06-14 12:29:41,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45185185185185184 [2024-06-14 12:29:41,342 INFO L175 Difference]: Start difference. First operand has 106 places, 141 transitions, 1290 flow. Second operand 5 states and 122 transitions. [2024-06-14 12:29:41,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 155 transitions, 1624 flow [2024-06-14 12:29:41,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 155 transitions, 1503 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-14 12:29:41,463 INFO L231 Difference]: Finished difference. Result has 106 places, 141 transitions, 1207 flow [2024-06-14 12:29:41,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1207, PETRI_PLACES=106, PETRI_TRANSITIONS=141} [2024-06-14 12:29:41,464 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 49 predicate places. [2024-06-14 12:29:41,464 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 141 transitions, 1207 flow [2024-06-14 12:29:41,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:41,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:29:41,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:29:41,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 12:29:41,465 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:29:41,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:29:41,465 INFO L85 PathProgramCache]: Analyzing trace with hash -2132992288, now seen corresponding path program 1 times [2024-06-14 12:29:41,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:29:41,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793828393] [2024-06-14 12:29:41,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:29:41,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:29:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:29:42,451 INFO 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 12:29:42,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:29:42,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793828393] [2024-06-14 12:29:42,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793828393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:29:42,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:29:42,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:29:42,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700713845] [2024-06-14 12:29:42,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:29:42,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:29:42,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:29:42,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:29:42,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:29:42,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:29:42,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 141 transitions, 1207 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:42,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:29:42,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:29:42,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:29:45,504 INFO L124 PetriNetUnfolderBase]: 14633/20453 cut-off events. [2024-06-14 12:29:45,504 INFO L125 PetriNetUnfolderBase]: For 246217/246230 co-relation queries the response was YES. [2024-06-14 12:29:45,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102648 conditions, 20453 events. 14633/20453 cut-off events. For 246217/246230 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 114811 event pairs, 6306 based on Foata normal form. 13/20411 useless extension candidates. Maximal degree in co-relation 102601. Up to 19538 conditions per place. [2024-06-14 12:29:45,656 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 148 selfloop transitions, 35 changer transitions 0/189 dead transitions. [2024-06-14 12:29:45,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 189 transitions, 1873 flow [2024-06-14 12:29:45,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:29:45,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:29:45,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-14 12:29:45,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48677248677248675 [2024-06-14 12:29:45,658 INFO L175 Difference]: Start difference. First operand has 106 places, 141 transitions, 1207 flow. Second operand 7 states and 184 transitions. [2024-06-14 12:29:45,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 189 transitions, 1873 flow [2024-06-14 12:29:45,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 189 transitions, 1824 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-14 12:29:45,772 INFO L231 Difference]: Finished difference. Result has 109 places, 149 transitions, 1363 flow [2024-06-14 12:29:45,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1363, PETRI_PLACES=109, PETRI_TRANSITIONS=149} [2024-06-14 12:29:45,773 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 52 predicate places. [2024-06-14 12:29:45,773 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 149 transitions, 1363 flow [2024-06-14 12:29:45,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:45,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:29:45,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:29:45,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 12:29:45,773 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:29:45,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:29:45,774 INFO L85 PathProgramCache]: Analyzing trace with hash -2132902078, now seen corresponding path program 2 times [2024-06-14 12:29:45,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:29:45,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226294195] [2024-06-14 12:29:45,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:29:45,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:29:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:29:47,013 INFO 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 12:29:47,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:29:47,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226294195] [2024-06-14 12:29:47,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226294195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:29:47,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:29:47,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:29:47,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358450101] [2024-06-14 12:29:47,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:29:47,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:29:47,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:29:47,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:29:47,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:29:47,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:29:47,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 149 transitions, 1363 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:47,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:29:47,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:29:47,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:29:49,898 INFO L124 PetriNetUnfolderBase]: 14624/20441 cut-off events. [2024-06-14 12:29:49,898 INFO L125 PetriNetUnfolderBase]: For 281964/281977 co-relation queries the response was YES. [2024-06-14 12:29:49,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106900 conditions, 20441 events. 14624/20441 cut-off events. For 281964/281977 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 114755 event pairs, 6306 based on Foata normal form. 13/20399 useless extension candidates. Maximal degree in co-relation 106853. Up to 19580 conditions per place. [2024-06-14 12:29:50,064 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 148 selfloop transitions, 29 changer transitions 0/183 dead transitions. [2024-06-14 12:29:50,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 183 transitions, 1805 flow [2024-06-14 12:29:50,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:29:50,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:29:50,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-14 12:29:50,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708994708994709 [2024-06-14 12:29:50,066 INFO L175 Difference]: Start difference. First operand has 109 places, 149 transitions, 1363 flow. Second operand 7 states and 178 transitions. [2024-06-14 12:29:50,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 183 transitions, 1805 flow [2024-06-14 12:29:50,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 183 transitions, 1688 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-06-14 12:29:50,339 INFO L231 Difference]: Finished difference. Result has 113 places, 149 transitions, 1315 flow [2024-06-14 12:29:50,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1315, PETRI_PLACES=113, PETRI_TRANSITIONS=149} [2024-06-14 12:29:50,346 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 56 predicate places. [2024-06-14 12:29:50,347 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 149 transitions, 1315 flow [2024-06-14 12:29:50,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:50,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:29:50,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:29:50,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 12:29:50,348 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:29:50,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:29:50,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2129182853, now seen corresponding path program 1 times [2024-06-14 12:29:50,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:29:50,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141778347] [2024-06-14 12:29:50,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:29:50,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:29:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:29:51,186 INFO 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 12:29:51,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:29:51,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141778347] [2024-06-14 12:29:51,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141778347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:29:51,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:29:51,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:29:51,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221497997] [2024-06-14 12:29:51,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:29:51,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:29:51,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:29:51,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:29:51,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:29:51,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:29:51,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 149 transitions, 1315 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:51,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:29:51,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:29:51,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:29:54,004 INFO L124 PetriNetUnfolderBase]: 14752/20563 cut-off events. [2024-06-14 12:29:54,005 INFO L125 PetriNetUnfolderBase]: For 305330/305341 co-relation queries the response was YES. [2024-06-14 12:29:54,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109224 conditions, 20563 events. 14752/20563 cut-off events. For 305330/305341 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 114806 event pairs, 5888 based on Foata normal form. 18/20510 useless extension candidates. Maximal degree in co-relation 109175. Up to 18548 conditions per place. [2024-06-14 12:29:54,146 INFO L140 encePairwiseOnDemand]: 38/54 looper letters, 140 selfloop transitions, 64 changer transitions 0/210 dead transitions. [2024-06-14 12:29:54,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 210 transitions, 2245 flow [2024-06-14 12:29:54,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:29:54,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:29:54,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 201 transitions. [2024-06-14 12:29:54,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5317460317460317 [2024-06-14 12:29:54,154 INFO L175 Difference]: Start difference. First operand has 113 places, 149 transitions, 1315 flow. Second operand 7 states and 201 transitions. [2024-06-14 12:29:54,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 210 transitions, 2245 flow [2024-06-14 12:29:54,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 210 transitions, 2173 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 12:29:54,316 INFO L231 Difference]: Finished difference. Result has 116 places, 159 transitions, 1593 flow [2024-06-14 12:29:54,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1593, PETRI_PLACES=116, PETRI_TRANSITIONS=159} [2024-06-14 12:29:54,317 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 59 predicate places. [2024-06-14 12:29:54,317 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 159 transitions, 1593 flow [2024-06-14 12:29:54,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:54,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:29:54,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:29:54,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 12:29:54,318 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:29:54,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:29:54,319 INFO L85 PathProgramCache]: Analyzing trace with hash -2129177273, now seen corresponding path program 2 times [2024-06-14 12:29:54,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:29:54,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931839594] [2024-06-14 12:29:54,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:29:54,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:29:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:29:55,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:29:55,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:29:55,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931839594] [2024-06-14 12:29:55,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931839594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:29:55,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:29:55,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:29:55,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088087390] [2024-06-14 12:29:55,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:29:55,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:29:55,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:29:55,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:29:55,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:29:55,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:29:55,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 159 transitions, 1593 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:55,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:29:55,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:29:55,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:29:58,065 INFO L124 PetriNetUnfolderBase]: 14880/20733 cut-off events. [2024-06-14 12:29:58,066 INFO L125 PetriNetUnfolderBase]: For 352415/352426 co-relation queries the response was YES. [2024-06-14 12:29:58,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116098 conditions, 20733 events. 14880/20733 cut-off events. For 352415/352426 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 115742 event pairs, 5811 based on Foata normal form. 18/20680 useless extension candidates. Maximal degree in co-relation 116046. Up to 18644 conditions per place. [2024-06-14 12:29:58,269 INFO L140 encePairwiseOnDemand]: 39/54 looper letters, 138 selfloop transitions, 66 changer transitions 0/210 dead transitions. [2024-06-14 12:29:58,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 210 transitions, 2399 flow [2024-06-14 12:29:58,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:29:58,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:29:58,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-06-14 12:29:58,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2024-06-14 12:29:58,271 INFO L175 Difference]: Start difference. First operand has 116 places, 159 transitions, 1593 flow. Second operand 7 states and 195 transitions. [2024-06-14 12:29:58,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 210 transitions, 2399 flow [2024-06-14 12:29:58,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 210 transitions, 2267 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-14 12:29:58,720 INFO L231 Difference]: Finished difference. Result has 120 places, 164 transitions, 1690 flow [2024-06-14 12:29:58,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1471, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1690, PETRI_PLACES=120, PETRI_TRANSITIONS=164} [2024-06-14 12:29:58,721 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 63 predicate places. [2024-06-14 12:29:58,721 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 164 transitions, 1690 flow [2024-06-14 12:29:58,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:58,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:29:58,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:29:58,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 12:29:58,722 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:29:58,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:29:58,722 INFO L85 PathProgramCache]: Analyzing trace with hash -48974085, now seen corresponding path program 3 times [2024-06-14 12:29:58,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:29:58,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673670828] [2024-06-14 12:29:58,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:29:58,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:29:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:29:59,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:29:59,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:29:59,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673670828] [2024-06-14 12:29:59,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673670828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:29:59,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:29:59,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:29:59,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960082582] [2024-06-14 12:29:59,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:29:59,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:29:59,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:29:59,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:29:59,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:29:59,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:29:59,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 164 transitions, 1690 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:59,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:29:59,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:29:59,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand