./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix033_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix033_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix033_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix033_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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:32:20,819 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:32:20,878 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:32:20,884 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:32:20,885 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:32:20,911 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:32:20,912 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:32:20,912 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:32:20,913 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:32:20,916 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:32:20,916 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:32:20,916 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:32:20,917 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:32:20,918 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:32:20,918 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:32:20,919 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:32:20,919 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:32:20,919 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:32:20,919 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:32:20,920 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:32:20,920 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:32:20,920 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:32:20,920 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:32:20,921 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:32:20,921 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:32:20,921 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:32:20,921 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:32:20,921 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:32:20,922 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:32:20,922 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:32:20,923 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:32:20,923 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:32:20,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:32:20,923 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:32:20,924 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:32:20,924 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:32:20,924 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:32:20,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:32:20,924 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:32:20,925 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:32:20,925 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:32:20,925 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:32:20,925 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:32:20,925 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:32:21,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:32:21,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:32:21,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:32:21,156 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:32:21,156 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:32:21,157 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix033_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 01:32:22,078 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:32:22,289 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:32:22,290 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix033_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 01:32:22,299 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10c548bb7/43a8e365e01449a998485f29b44beae9/FLAGaffab9548 [2024-06-28 01:32:22,314 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10c548bb7/43a8e365e01449a998485f29b44beae9 [2024-06-28 01:32:22,316 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:32:22,316 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:32:22,318 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix033_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-28 01:32:22,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:32:22,471 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:32:22,473 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:32:22,473 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:32:22,476 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:32:22,477 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:32:22" (1/2) ... [2024-06-28 01:32:22,477 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c7ee369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:22, skipping insertion in model container [2024-06-28 01:32:22,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:32:22" (1/2) ... [2024-06-28 01:32:22,479 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7585e20b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:22, skipping insertion in model container [2024-06-28 01:32:22,479 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:32:22" (2/2) ... [2024-06-28 01:32:22,480 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c7ee369 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:22, skipping insertion in model container [2024-06-28 01:32:22,480 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:32:22" (2/2) ... [2024-06-28 01:32:22,480 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:32:22,548 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:32:22,549 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] (((((((((((((((((((((! multithreaded || b$r_buff0_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && b$flush_delayed == (_Bool)0) && b$r_buff0_thd0 == (_Bool)0) && b$r_buff0_thd2 == (_Bool)0) && b$r_buff0_thd3 == (_Bool)0) && b$r_buff1_thd0 == (_Bool)0) && b$r_buff1_thd2 == (_Bool)0) && b$r_buff1_thd3 == (_Bool)0) && b$read_delayed == (_Bool)0) && b$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (b$mem_tmp == 0 || b$mem_tmp == 1)) && (b$w_buff0 == 0 || b$w_buff0 == 1)) && (b$w_buff1 == 0 || b$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1)) [2024-06-28 01:32:22,549 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((! multithreaded || b$r_buff0_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && b$flush_delayed == (_Bool)0) && b$r_buff0_thd0 == (_Bool)0) && b$r_buff0_thd2 == (_Bool)0) && b$r_buff0_thd3 == (_Bool)0) && b$r_buff1_thd0 == (_Bool)0) && b$r_buff1_thd2 == (_Bool)0) && b$r_buff1_thd3 == (_Bool)0) && b$read_delayed == (_Bool)0) && b$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (b$mem_tmp == 0 || b$mem_tmp == 1)) && (b$w_buff0 == 0 || b$w_buff0 == 1)) && (b$w_buff1 == 0 || b$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1)) [2024-06-28 01:32:22,549 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] (((((((((((((((((((((! multithreaded || b$r_buff0_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && b$flush_delayed == (_Bool)0) && b$r_buff0_thd0 == (_Bool)0) && b$r_buff0_thd2 == (_Bool)0) && b$r_buff0_thd3 == (_Bool)0) && b$r_buff1_thd0 == (_Bool)0) && b$r_buff1_thd2 == (_Bool)0) && b$r_buff1_thd3 == (_Bool)0) && b$read_delayed == (_Bool)0) && b$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (b$mem_tmp == 0 || b$mem_tmp == 1)) && (b$w_buff0 == 0 || b$w_buff0 == 1)) && (b$w_buff1 == 0 || b$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1)) [2024-06-28 01:32:22,550 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:32:22,550 INFO L106 edCorrectnessWitness]: ghost_update [L854-L854] multithreaded = 1; [2024-06-28 01:32:22,585 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:32:22,717 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix033_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-06-28 01:32:22,863 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:32:22,880 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:32:22,916 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix033_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:32:22,989 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:32:23,016 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:32:23,016 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:23 WrapperNode [2024-06-28 01:32:23,017 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:32:23,017 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:32:23,017 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:32:23,018 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:32:23,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:23" (1/1) ... [2024-06-28 01:32:23,047 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:23" (1/1) ... [2024-06-28 01:32:23,075 INFO L138 Inliner]: procedures = 175, calls = 50, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 125 [2024-06-28 01:32:23,075 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:32:23,076 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:32:23,076 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:32:23,076 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:32:23,085 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:23" (1/1) ... [2024-06-28 01:32:23,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:23" (1/1) ... [2024-06-28 01:32:23,088 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:23" (1/1) ... [2024-06-28 01:32:23,108 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 01:32:23,108 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:23" (1/1) ... [2024-06-28 01:32:23,108 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:23" (1/1) ... [2024-06-28 01:32:23,136 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:23" (1/1) ... [2024-06-28 01:32:23,156 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:23" (1/1) ... [2024-06-28 01:32:23,159 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:23" (1/1) ... [2024-06-28 01:32:23,167 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:23" (1/1) ... [2024-06-28 01:32:23,170 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:32:23,173 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:32:23,173 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:32:23,173 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:32:23,174 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:23" (1/1) ... [2024-06-28 01:32:23,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:32:23,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:32:23,199 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:32:23,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:32:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:32:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:32:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:32:23,229 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:32:23,230 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:32:23,230 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:32:23,230 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:32:23,230 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:32:23,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:32:23,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:32:23,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:32:23,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:32:23,231 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:32:23,320 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:32:23,323 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:32:23,601 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:32:23,602 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:32:23,757 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:32:23,757 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:32:23,758 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:32:23 BoogieIcfgContainer [2024-06-28 01:32:23,758 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:32:23,760 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:32:23,760 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:32:23,762 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:32:23,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:32:22" (1/4) ... [2024-06-28 01:32:23,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679b9f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:32:23, skipping insertion in model container [2024-06-28 01:32:23,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:32:22" (2/4) ... [2024-06-28 01:32:23,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679b9f3a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:32:23, skipping insertion in model container [2024-06-28 01:32:23,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:23" (3/4) ... [2024-06-28 01:32:23,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679b9f3a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:32:23, skipping insertion in model container [2024-06-28 01:32:23,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:32:23" (4/4) ... [2024-06-28 01:32:23,765 INFO L112 eAbstractionObserver]: Analyzing ICFG mix033_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 01:32:23,777 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:32:23,777 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:32:23,777 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:32:23,813 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:32:23,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 50 transitions, 112 flow [2024-06-28 01:32:23,867 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2024-06-28 01:32:23,868 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:32:23,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 47 events. 1/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2024-06-28 01:32:23,871 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 50 transitions, 112 flow [2024-06-28 01:32:23,874 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 47 transitions, 103 flow [2024-06-28 01:32:23,881 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:32:23,885 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;@3d4bc9d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:32:23,886 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:32:23,888 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:32:23,888 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:32:23,888 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:32:23,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:23,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:32:23,889 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:23,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:23,912 INFO L85 PathProgramCache]: Analyzing trace with hash 350216843, now seen corresponding path program 1 times [2024-06-28 01:32:23,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:23,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145568642] [2024-06-28 01:32:23,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:23,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:24,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:24,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:24,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145568642] [2024-06-28 01:32:24,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145568642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:24,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:24,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:32:24,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693609794] [2024-06-28 01:32:24,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:24,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:32:24,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:24,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:32:24,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:32:24,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-28 01:32:24,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:24,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:24,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-28 01:32:24,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:25,785 INFO L124 PetriNetUnfolderBase]: 5249/8503 cut-off events. [2024-06-28 01:32:25,787 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-06-28 01:32:25,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16109 conditions, 8503 events. 5249/8503 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 57003 event pairs, 4143 based on Foata normal form. 253/8057 useless extension candidates. Maximal degree in co-relation 16097. Up to 7489 conditions per place. [2024-06-28 01:32:25,830 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 43 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2024-06-28 01:32:25,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 233 flow [2024-06-28 01:32:25,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:32:25,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:32:25,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-06-28 01:32:25,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6733333333333333 [2024-06-28 01:32:25,841 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 103 flow. Second operand 3 states and 101 transitions. [2024-06-28 01:32:25,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 233 flow [2024-06-28 01:32:25,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 228 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:25,848 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 135 flow [2024-06-28 01:32:25,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2024-06-28 01:32:25,853 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2024-06-28 01:32:25,853 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 135 flow [2024-06-28 01:32:25,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:25,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:25,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:32:25,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:32:25,855 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:25,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:25,856 INFO L85 PathProgramCache]: Analyzing trace with hash 350218180, now seen corresponding path program 1 times [2024-06-28 01:32:25,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:25,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700441747] [2024-06-28 01:32:25,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:25,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:25,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:25,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:25,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700441747] [2024-06-28 01:32:25,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700441747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:25,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:25,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:32:25,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271056022] [2024-06-28 01:32:25,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:25,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:32:25,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:25,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:32:25,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:32:25,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 50 [2024-06-28 01:32:25,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:25,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:25,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 50 [2024-06-28 01:32:25,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:26,191 INFO L124 PetriNetUnfolderBase]: 996/1923 cut-off events. [2024-06-28 01:32:26,192 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-06-28 01:32:26,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3687 conditions, 1923 events. 996/1923 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 13105 event pairs, 655 based on Foata normal form. 0/1777 useless extension candidates. Maximal degree in co-relation 3675. Up to 1277 conditions per place. [2024-06-28 01:32:26,204 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 35 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2024-06-28 01:32:26,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 64 transitions, 238 flow [2024-06-28 01:32:26,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:32:26,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:32:26,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-06-28 01:32:26,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7933333333333333 [2024-06-28 01:32:26,208 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 135 flow. Second operand 3 states and 119 transitions. [2024-06-28 01:32:26,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 64 transitions, 238 flow [2024-06-28 01:32:26,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 64 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:32:26,210 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 128 flow [2024-06-28 01:32:26,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-28 01:32:26,211 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2024-06-28 01:32:26,212 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 128 flow [2024-06-28 01:32:26,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:26,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:26,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:26,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:32:26,215 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:26,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:26,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1550951497, now seen corresponding path program 1 times [2024-06-28 01:32:26,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:26,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461471600] [2024-06-28 01:32:26,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:26,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:26,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:26,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:26,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461471600] [2024-06-28 01:32:26,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461471600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:26,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:26,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:32:26,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385638531] [2024-06-28 01:32:26,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:26,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:32:26,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:26,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:32:26,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:32:26,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-28 01:32:26,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:26,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:26,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-28 01:32:26,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:27,509 INFO L124 PetriNetUnfolderBase]: 4457/7227 cut-off events. [2024-06-28 01:32:27,509 INFO L125 PetriNetUnfolderBase]: For 1626/1626 co-relation queries the response was YES. [2024-06-28 01:32:27,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15202 conditions, 7227 events. 4457/7227 cut-off events. For 1626/1626 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 46532 event pairs, 3358 based on Foata normal form. 3/6961 useless extension candidates. Maximal degree in co-relation 15189. Up to 6358 conditions per place. [2024-06-28 01:32:27,548 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 51 selfloop transitions, 8 changer transitions 2/74 dead transitions. [2024-06-28 01:32:27,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 74 transitions, 322 flow [2024-06-28 01:32:27,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:32:27,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:32:27,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-06-28 01:32:27,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-28 01:32:27,552 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 128 flow. Second operand 4 states and 125 transitions. [2024-06-28 01:32:27,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 74 transitions, 322 flow [2024-06-28 01:32:27,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 74 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:27,555 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 189 flow [2024-06-28 01:32:27,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-06-28 01:32:27,556 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2024-06-28 01:32:27,556 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 189 flow [2024-06-28 01:32:27,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:27,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:27,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:27,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:32:27,557 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:27,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:27,558 INFO L85 PathProgramCache]: Analyzing trace with hash 834856694, now seen corresponding path program 1 times [2024-06-28 01:32:27,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:27,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286558294] [2024-06-28 01:32:27,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:27,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:28,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:28,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:28,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286558294] [2024-06-28 01:32:28,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286558294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:28,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:28,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:32:28,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988736322] [2024-06-28 01:32:28,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:28,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:32:28,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:28,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:32:28,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:32:28,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-28 01:32:28,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 189 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:28,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:28,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-28 01:32:28,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:28,975 INFO L124 PetriNetUnfolderBase]: 3850/6375 cut-off events. [2024-06-28 01:32:28,975 INFO L125 PetriNetUnfolderBase]: For 2630/2630 co-relation queries the response was YES. [2024-06-28 01:32:28,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14448 conditions, 6375 events. 3850/6375 cut-off events. For 2630/2630 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 41252 event pairs, 2342 based on Foata normal form. 5/6160 useless extension candidates. Maximal degree in co-relation 14433. Up to 5419 conditions per place. [2024-06-28 01:32:29,007 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 67 selfloop transitions, 18 changer transitions 0/98 dead transitions. [2024-06-28 01:32:29,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 98 transitions, 501 flow [2024-06-28 01:32:29,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:32:29,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:32:29,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2024-06-28 01:32:29,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-06-28 01:32:29,009 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 189 flow. Second operand 5 states and 160 transitions. [2024-06-28 01:32:29,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 98 transitions, 501 flow [2024-06-28 01:32:29,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 98 transitions, 490 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 01:32:29,014 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 303 flow [2024-06-28 01:32:29,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=303, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2024-06-28 01:32:29,016 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2024-06-28 01:32:29,016 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 303 flow [2024-06-28 01:32:29,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:29,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:29,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:29,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:32:29,017 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:29,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:29,017 INFO L85 PathProgramCache]: Analyzing trace with hash 110754312, now seen corresponding path program 1 times [2024-06-28 01:32:29,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:29,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871528000] [2024-06-28 01:32:29,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:29,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:29,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:29,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:29,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871528000] [2024-06-28 01:32:29,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871528000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:29,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:29,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:32:29,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723135382] [2024-06-28 01:32:29,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:29,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:32:29,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:29,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:32:29,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:32:29,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-28 01:32:29,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 303 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:29,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:29,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-28 01:32:29,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:30,633 INFO L124 PetriNetUnfolderBase]: 3872/6416 cut-off events. [2024-06-28 01:32:30,634 INFO L125 PetriNetUnfolderBase]: For 6493/6496 co-relation queries the response was YES. [2024-06-28 01:32:30,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16811 conditions, 6416 events. 3872/6416 cut-off events. For 6493/6496 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 41546 event pairs, 2025 based on Foata normal form. 7/6200 useless extension candidates. Maximal degree in co-relation 16792. Up to 5385 conditions per place. [2024-06-28 01:32:30,665 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 79 selfloop transitions, 33 changer transitions 0/125 dead transitions. [2024-06-28 01:32:30,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 125 transitions, 759 flow [2024-06-28 01:32:30,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:30,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:30,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2024-06-28 01:32:30,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6366666666666667 [2024-06-28 01:32:30,667 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 303 flow. Second operand 6 states and 191 transitions. [2024-06-28 01:32:30,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 125 transitions, 759 flow [2024-06-28 01:32:30,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 125 transitions, 751 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-28 01:32:30,680 INFO L231 Difference]: Finished difference. Result has 73 places, 81 transitions, 513 flow [2024-06-28 01:32:30,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=295, 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=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=513, PETRI_PLACES=73, PETRI_TRANSITIONS=81} [2024-06-28 01:32:30,683 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-06-28 01:32:30,683 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 81 transitions, 513 flow [2024-06-28 01:32:30,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:30,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:30,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:30,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:32:30,684 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:30,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:30,684 INFO L85 PathProgramCache]: Analyzing trace with hash -861583019, now seen corresponding path program 1 times [2024-06-28 01:32:30,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:30,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263436774] [2024-06-28 01:32:30,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:30,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:31,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:31,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:31,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263436774] [2024-06-28 01:32:31,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263436774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:31,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:31,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:31,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123656691] [2024-06-28 01:32:31,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:31,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:31,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:31,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:31,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:31,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-28 01:32:31,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 81 transitions, 513 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:31,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:31,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-28 01:32:31,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:32,682 INFO L124 PetriNetUnfolderBase]: 3899/5967 cut-off events. [2024-06-28 01:32:32,682 INFO L125 PetriNetUnfolderBase]: For 12880/12886 co-relation queries the response was YES. [2024-06-28 01:32:32,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19103 conditions, 5967 events. 3899/5967 cut-off events. For 12880/12886 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 35166 event pairs, 1092 based on Foata normal form. 14/5888 useless extension candidates. Maximal degree in co-relation 19078. Up to 5350 conditions per place. [2024-06-28 01:32:32,718 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 86 selfloop transitions, 36 changer transitions 0/135 dead transitions. [2024-06-28 01:32:32,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 135 transitions, 955 flow [2024-06-28 01:32:32,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:32,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:32,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 217 transitions. [2024-06-28 01:32:32,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-06-28 01:32:32,720 INFO L175 Difference]: Start difference. First operand has 73 places, 81 transitions, 513 flow. Second operand 7 states and 217 transitions. [2024-06-28 01:32:32,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 135 transitions, 955 flow [2024-06-28 01:32:32,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 135 transitions, 921 flow, removed 17 selfloop flow, removed 0 redundant places. [2024-06-28 01:32:32,730 INFO L231 Difference]: Finished difference. Result has 79 places, 83 transitions, 583 flow [2024-06-28 01:32:32,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=583, PETRI_PLACES=79, PETRI_TRANSITIONS=83} [2024-06-28 01:32:32,731 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2024-06-28 01:32:32,731 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 83 transitions, 583 flow [2024-06-28 01:32:32,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:32,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:32,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:32,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:32:32,732 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:32,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:32,732 INFO L85 PathProgramCache]: Analyzing trace with hash -898401476, now seen corresponding path program 1 times [2024-06-28 01:32:32,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:32,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399748488] [2024-06-28 01:32:32,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:32,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:33,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:33,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:33,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399748488] [2024-06-28 01:32:33,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399748488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:33,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:33,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:32:33,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023743513] [2024-06-28 01:32:33,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:33,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:32:33,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:33,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:32:33,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:32:33,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:32:33,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 83 transitions, 583 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:33,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:33,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:32:33,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:34,131 INFO L124 PetriNetUnfolderBase]: 4541/7443 cut-off events. [2024-06-28 01:32:34,132 INFO L125 PetriNetUnfolderBase]: For 16242/16242 co-relation queries the response was YES. [2024-06-28 01:32:34,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22509 conditions, 7443 events. 4541/7443 cut-off events. For 16242/16242 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 48528 event pairs, 1945 based on Foata normal form. 2/7196 useless extension candidates. Maximal degree in co-relation 22480. Up to 6479 conditions per place. [2024-06-28 01:32:34,226 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 75 selfloop transitions, 14 changer transitions 0/100 dead transitions. [2024-06-28 01:32:34,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 100 transitions, 801 flow [2024-06-28 01:32:34,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:32:34,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:32:34,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-06-28 01:32:34,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516 [2024-06-28 01:32:34,227 INFO L175 Difference]: Start difference. First operand has 79 places, 83 transitions, 583 flow. Second operand 5 states and 129 transitions. [2024-06-28 01:32:34,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 100 transitions, 801 flow [2024-06-28 01:32:34,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 100 transitions, 711 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:34,236 INFO L231 Difference]: Finished difference. Result has 79 places, 83 transitions, 533 flow [2024-06-28 01:32:34,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=533, PETRI_PLACES=79, PETRI_TRANSITIONS=83} [2024-06-28 01:32:34,237 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2024-06-28 01:32:34,237 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 83 transitions, 533 flow [2024-06-28 01:32:34,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:34,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:34,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:34,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:32:34,238 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:34,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:34,238 INFO L85 PathProgramCache]: Analyzing trace with hash -2100042761, now seen corresponding path program 1 times [2024-06-28 01:32:34,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:34,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556181804] [2024-06-28 01:32:34,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:34,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:34,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:34,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:34,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556181804] [2024-06-28 01:32:34,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556181804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:34,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:34,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:34,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849999900] [2024-06-28 01:32:34,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:34,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:34,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:34,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:34,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:34,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:32:34,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 83 transitions, 533 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) [2024-06-28 01:32:34,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:34,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:32:34,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:35,910 INFO L124 PetriNetUnfolderBase]: 5329/8698 cut-off events. [2024-06-28 01:32:35,910 INFO L125 PetriNetUnfolderBase]: For 19026/19026 co-relation queries the response was YES. [2024-06-28 01:32:35,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25623 conditions, 8698 events. 5329/8698 cut-off events. For 19026/19026 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 57105 event pairs, 2333 based on Foata normal form. 2/8474 useless extension candidates. Maximal degree in co-relation 25592. Up to 7566 conditions per place. [2024-06-28 01:32:35,964 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 84 selfloop transitions, 17 changer transitions 0/111 dead transitions. [2024-06-28 01:32:35,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 111 transitions, 817 flow [2024-06-28 01:32:35,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:35,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:35,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-28 01:32:35,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49666666666666665 [2024-06-28 01:32:35,966 INFO L175 Difference]: Start difference. First operand has 79 places, 83 transitions, 533 flow. Second operand 6 states and 149 transitions. [2024-06-28 01:32:35,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 111 transitions, 817 flow [2024-06-28 01:32:35,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 111 transitions, 778 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:35,982 INFO L231 Difference]: Finished difference. Result has 81 places, 86 transitions, 563 flow [2024-06-28 01:32:35,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=563, PETRI_PLACES=81, PETRI_TRANSITIONS=86} [2024-06-28 01:32:35,984 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 25 predicate places. [2024-06-28 01:32:35,984 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 86 transitions, 563 flow [2024-06-28 01:32:35,984 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) [2024-06-28 01:32:35,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:35,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:35,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:32:35,985 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:35,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:35,985 INFO L85 PathProgramCache]: Analyzing trace with hash -82728978, now seen corresponding path program 1 times [2024-06-28 01:32:35,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:35,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444345053] [2024-06-28 01:32:35,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:35,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:36,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:36,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:36,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444345053] [2024-06-28 01:32:36,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444345053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:36,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:36,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:36,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318030410] [2024-06-28 01:32:36,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:36,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:36,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:36,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:36,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:36,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:32:36,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 86 transitions, 563 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 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) [2024-06-28 01:32:36,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:36,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:32:36,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:37,674 INFO L124 PetriNetUnfolderBase]: 5055/8259 cut-off events. [2024-06-28 01:32:37,675 INFO L125 PetriNetUnfolderBase]: For 23041/23050 co-relation queries the response was YES. [2024-06-28 01:32:37,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25881 conditions, 8259 events. 5055/8259 cut-off events. For 23041/23050 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 54059 event pairs, 1888 based on Foata normal form. 10/8043 useless extension candidates. Maximal degree in co-relation 25850. Up to 7103 conditions per place. [2024-06-28 01:32:37,718 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 86 selfloop transitions, 21 changer transitions 0/119 dead transitions. [2024-06-28 01:32:37,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 119 transitions, 915 flow [2024-06-28 01:32:37,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:37,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:37,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-06-28 01:32:37,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-06-28 01:32:37,720 INFO L175 Difference]: Start difference. First operand has 81 places, 86 transitions, 563 flow. Second operand 6 states and 162 transitions. [2024-06-28 01:32:37,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 119 transitions, 915 flow [2024-06-28 01:32:37,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 119 transitions, 874 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:37,733 INFO L231 Difference]: Finished difference. Result has 83 places, 89 transitions, 608 flow [2024-06-28 01:32:37,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=608, PETRI_PLACES=83, PETRI_TRANSITIONS=89} [2024-06-28 01:32:37,733 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2024-06-28 01:32:37,733 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 89 transitions, 608 flow [2024-06-28 01:32:37,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 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) [2024-06-28 01:32:37,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:37,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:37,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:32:37,734 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:37,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:37,735 INFO L85 PathProgramCache]: Analyzing trace with hash -74939298, now seen corresponding path program 2 times [2024-06-28 01:32:37,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:37,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856769185] [2024-06-28 01:32:37,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:37,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:38,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:38,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:38,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856769185] [2024-06-28 01:32:38,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856769185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:38,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:38,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:38,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842074833] [2024-06-28 01:32:38,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:38,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:38,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:38,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:38,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:38,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:32:38,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 89 transitions, 608 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 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) [2024-06-28 01:32:38,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:38,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:32:38,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:39,503 INFO L124 PetriNetUnfolderBase]: 5049/8383 cut-off events. [2024-06-28 01:32:39,503 INFO L125 PetriNetUnfolderBase]: For 25554/25554 co-relation queries the response was YES. [2024-06-28 01:32:39,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26373 conditions, 8383 events. 5049/8383 cut-off events. For 25554/25554 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 56393 event pairs, 2133 based on Foata normal form. 2/8148 useless extension candidates. Maximal degree in co-relation 26341. Up to 7205 conditions per place. [2024-06-28 01:32:39,550 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 87 selfloop transitions, 13 changer transitions 0/112 dead transitions. [2024-06-28 01:32:39,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 112 transitions, 866 flow [2024-06-28 01:32:39,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:39,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:39,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 01:32:39,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2024-06-28 01:32:39,552 INFO L175 Difference]: Start difference. First operand has 83 places, 89 transitions, 608 flow. Second operand 6 states and 152 transitions. [2024-06-28 01:32:39,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 112 transitions, 866 flow [2024-06-28 01:32:39,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 112 transitions, 833 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:39,572 INFO L231 Difference]: Finished difference. Result has 86 places, 89 transitions, 609 flow [2024-06-28 01:32:39,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=609, PETRI_PLACES=86, PETRI_TRANSITIONS=89} [2024-06-28 01:32:39,573 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 30 predicate places. [2024-06-28 01:32:39,573 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 89 transitions, 609 flow [2024-06-28 01:32:39,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 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) [2024-06-28 01:32:39,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:39,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:39,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:32:39,574 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:39,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:39,574 INFO L85 PathProgramCache]: Analyzing trace with hash -94996081, now seen corresponding path program 1 times [2024-06-28 01:32:39,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:39,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662361266] [2024-06-28 01:32:39,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:39,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:40,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:40,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:40,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662361266] [2024-06-28 01:32:40,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662361266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:40,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:40,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:40,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103510430] [2024-06-28 01:32:40,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:40,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:40,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:40,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:40,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:40,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:32:40,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 89 transitions, 609 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:40,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:40,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:32:40,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:41,518 INFO L124 PetriNetUnfolderBase]: 5322/8653 cut-off events. [2024-06-28 01:32:41,518 INFO L125 PetriNetUnfolderBase]: For 28247/28247 co-relation queries the response was YES. [2024-06-28 01:32:41,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27419 conditions, 8653 events. 5322/8653 cut-off events. For 28247/28247 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 56591 event pairs, 2229 based on Foata normal form. 4/8428 useless extension candidates. Maximal degree in co-relation 27386. Up to 7518 conditions per place. [2024-06-28 01:32:41,556 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 96 selfloop transitions, 20 changer transitions 0/126 dead transitions. [2024-06-28 01:32:41,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 126 transitions, 951 flow [2024-06-28 01:32:41,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:41,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:41,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 01:32:41,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49714285714285716 [2024-06-28 01:32:41,558 INFO L175 Difference]: Start difference. First operand has 86 places, 89 transitions, 609 flow. Second operand 7 states and 174 transitions. [2024-06-28 01:32:41,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 126 transitions, 951 flow [2024-06-28 01:32:41,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 126 transitions, 895 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 01:32:41,575 INFO L231 Difference]: Finished difference. Result has 87 places, 92 transitions, 631 flow [2024-06-28 01:32:41,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=631, PETRI_PLACES=87, PETRI_TRANSITIONS=92} [2024-06-28 01:32:41,576 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 31 predicate places. [2024-06-28 01:32:41,576 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 92 transitions, 631 flow [2024-06-28 01:32:41,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:41,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:41,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:41,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:32:41,577 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:41,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:41,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1880171565, now seen corresponding path program 1 times [2024-06-28 01:32:41,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:41,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462139466] [2024-06-28 01:32:41,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:41,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:42,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:42,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:42,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462139466] [2024-06-28 01:32:42,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462139466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:42,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:42,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:42,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495190625] [2024-06-28 01:32:42,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:42,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:42,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:42,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:42,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:42,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:32:42,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 92 transitions, 631 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:42,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:42,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:32:42,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:43,438 INFO L124 PetriNetUnfolderBase]: 5378/8649 cut-off events. [2024-06-28 01:32:43,438 INFO L125 PetriNetUnfolderBase]: For 33098/33104 co-relation queries the response was YES. [2024-06-28 01:32:43,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28822 conditions, 8649 events. 5378/8649 cut-off events. For 33098/33104 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 55376 event pairs, 1951 based on Foata normal form. 8/8426 useless extension candidates. Maximal degree in co-relation 28789. Up to 7422 conditions per place. [2024-06-28 01:32:43,485 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 103 selfloop transitions, 29 changer transitions 0/142 dead transitions. [2024-06-28 01:32:43,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 142 transitions, 1118 flow [2024-06-28 01:32:43,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:43,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:43,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 01:32:43,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257142857142857 [2024-06-28 01:32:43,486 INFO L175 Difference]: Start difference. First operand has 87 places, 92 transitions, 631 flow. Second operand 7 states and 184 transitions. [2024-06-28 01:32:43,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 142 transitions, 1118 flow [2024-06-28 01:32:43,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 142 transitions, 1061 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:43,505 INFO L231 Difference]: Finished difference. Result has 90 places, 103 transitions, 745 flow [2024-06-28 01:32:43,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=745, PETRI_PLACES=90, PETRI_TRANSITIONS=103} [2024-06-28 01:32:43,506 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 34 predicate places. [2024-06-28 01:32:43,506 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 103 transitions, 745 flow [2024-06-28 01:32:43,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:43,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:43,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:43,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:32:43,506 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:43,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:43,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1971850867, now seen corresponding path program 2 times [2024-06-28 01:32:43,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:43,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344374066] [2024-06-28 01:32:43,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:43,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:44,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:44,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:44,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344374066] [2024-06-28 01:32:44,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344374066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:44,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:44,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:44,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898961136] [2024-06-28 01:32:44,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:44,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:44,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:44,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:44,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:44,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:32:44,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 103 transitions, 745 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:44,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:44,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:32:44,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:45,398 INFO L124 PetriNetUnfolderBase]: 5401/8825 cut-off events. [2024-06-28 01:32:45,398 INFO L125 PetriNetUnfolderBase]: For 40449/40449 co-relation queries the response was YES. [2024-06-28 01:32:45,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31047 conditions, 8825 events. 5401/8825 cut-off events. For 40449/40449 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 58109 event pairs, 2197 based on Foata normal form. 2/8594 useless extension candidates. Maximal degree in co-relation 31012. Up to 7623 conditions per place. [2024-06-28 01:32:45,461 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 110 selfloop transitions, 22 changer transitions 0/142 dead transitions. [2024-06-28 01:32:45,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 142 transitions, 1201 flow [2024-06-28 01:32:45,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:45,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:45,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 01:32:45,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:32:45,463 INFO L175 Difference]: Start difference. First operand has 90 places, 103 transitions, 745 flow. Second operand 7 states and 175 transitions. [2024-06-28 01:32:45,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 142 transitions, 1201 flow [2024-06-28 01:32:45,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 142 transitions, 1173 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:45,492 INFO L231 Difference]: Finished difference. Result has 95 places, 109 transitions, 835 flow [2024-06-28 01:32:45,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=835, PETRI_PLACES=95, PETRI_TRANSITIONS=109} [2024-06-28 01:32:45,493 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 39 predicate places. [2024-06-28 01:32:45,493 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 109 transitions, 835 flow [2024-06-28 01:32:45,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:45,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:45,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:45,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:32:45,494 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:45,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:45,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1293705195, now seen corresponding path program 3 times [2024-06-28 01:32:45,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:45,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8140056] [2024-06-28 01:32:45,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:45,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:46,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:46,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:46,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8140056] [2024-06-28 01:32:46,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8140056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:46,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:46,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:46,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611961150] [2024-06-28 01:32:46,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:46,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:46,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:46,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:46,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:46,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:32:46,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 109 transitions, 835 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:46,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:46,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:32:46,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:47,511 INFO L124 PetriNetUnfolderBase]: 5396/8822 cut-off events. [2024-06-28 01:32:47,511 INFO L125 PetriNetUnfolderBase]: For 45409/45409 co-relation queries the response was YES. [2024-06-28 01:32:47,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31683 conditions, 8822 events. 5396/8822 cut-off events. For 45409/45409 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 57991 event pairs, 2199 based on Foata normal form. 2/8590 useless extension candidates. Maximal degree in co-relation 31645. Up to 7650 conditions per place. [2024-06-28 01:32:47,560 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 111 selfloop transitions, 17 changer transitions 0/138 dead transitions. [2024-06-28 01:32:47,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 138 transitions, 1165 flow [2024-06-28 01:32:47,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:47,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:47,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 01:32:47,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-06-28 01:32:47,562 INFO L175 Difference]: Start difference. First operand has 95 places, 109 transitions, 835 flow. Second operand 7 states and 170 transitions. [2024-06-28 01:32:47,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 138 transitions, 1165 flow [2024-06-28 01:32:47,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 138 transitions, 1109 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:47,587 INFO L231 Difference]: Finished difference. Result has 99 places, 109 transitions, 821 flow [2024-06-28 01:32:47,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=821, PETRI_PLACES=99, PETRI_TRANSITIONS=109} [2024-06-28 01:32:47,588 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 43 predicate places. [2024-06-28 01:32:47,588 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 109 transitions, 821 flow [2024-06-28 01:32:47,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:47,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:47,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:47,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:32:47,588 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:47,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:47,589 INFO L85 PathProgramCache]: Analyzing trace with hash -777105615, now seen corresponding path program 1 times [2024-06-28 01:32:47,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:47,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619669465] [2024-06-28 01:32:47,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:47,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:48,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:48,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:48,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619669465] [2024-06-28 01:32:48,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619669465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:48,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:48,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:32:48,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77025712] [2024-06-28 01:32:48,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:48,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:32:48,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:48,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:32:48,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:32:48,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:32:48,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 109 transitions, 821 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:48,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:48,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:32:48,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:49,222 INFO L124 PetriNetUnfolderBase]: 5913/9735 cut-off events. [2024-06-28 01:32:49,222 INFO L125 PetriNetUnfolderBase]: For 54571/54583 co-relation queries the response was YES. [2024-06-28 01:32:49,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34737 conditions, 9735 events. 5913/9735 cut-off events. For 54571/54583 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 65204 event pairs, 2501 based on Foata normal form. 1/9485 useless extension candidates. Maximal degree in co-relation 34698. Up to 8400 conditions per place. [2024-06-28 01:32:49,278 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 100 selfloop transitions, 11 changer transitions 0/127 dead transitions. [2024-06-28 01:32:49,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 127 transitions, 1111 flow [2024-06-28 01:32:49,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:32:49,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:32:49,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-28 01:32:49,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484 [2024-06-28 01:32:49,280 INFO L175 Difference]: Start difference. First operand has 99 places, 109 transitions, 821 flow. Second operand 5 states and 121 transitions. [2024-06-28 01:32:49,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 127 transitions, 1111 flow [2024-06-28 01:32:49,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 127 transitions, 1062 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 01:32:49,312 INFO L231 Difference]: Finished difference. Result has 98 places, 112 transitions, 835 flow [2024-06-28 01:32:49,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=835, PETRI_PLACES=98, PETRI_TRANSITIONS=112} [2024-06-28 01:32:49,313 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 42 predicate places. [2024-06-28 01:32:49,313 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 112 transitions, 835 flow [2024-06-28 01:32:49,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:49,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:49,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:49,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:32:49,313 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:49,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:49,313 INFO L85 PathProgramCache]: Analyzing trace with hash 321478807, now seen corresponding path program 1 times [2024-06-28 01:32:49,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:49,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607244985] [2024-06-28 01:32:49,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:49,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:50,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:50,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:50,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607244985] [2024-06-28 01:32:50,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607244985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:50,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:50,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:50,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377574852] [2024-06-28 01:32:50,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:50,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:50,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:50,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:50,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:50,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:32:50,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 112 transitions, 835 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:50,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:50,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:32:50,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:51,445 INFO L124 PetriNetUnfolderBase]: 5141/7946 cut-off events. [2024-06-28 01:32:51,446 INFO L125 PetriNetUnfolderBase]: For 53820/53826 co-relation queries the response was YES. [2024-06-28 01:32:51,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31377 conditions, 7946 events. 5141/7946 cut-off events. For 53820/53826 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 48426 event pairs, 1548 based on Foata normal form. 6/7907 useless extension candidates. Maximal degree in co-relation 31337. Up to 7073 conditions per place. [2024-06-28 01:32:51,503 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 107 selfloop transitions, 37 changer transitions 0/161 dead transitions. [2024-06-28 01:32:51,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 161 transitions, 1361 flow [2024-06-28 01:32:51,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:51,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:51,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-06-28 01:32:51,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5457142857142857 [2024-06-28 01:32:51,504 INFO L175 Difference]: Start difference. First operand has 98 places, 112 transitions, 835 flow. Second operand 7 states and 191 transitions. [2024-06-28 01:32:51,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 161 transitions, 1361 flow [2024-06-28 01:32:51,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 161 transitions, 1322 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:51,537 INFO L231 Difference]: Finished difference. Result has 102 places, 118 transitions, 936 flow [2024-06-28 01:32:51,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=936, PETRI_PLACES=102, PETRI_TRANSITIONS=118} [2024-06-28 01:32:51,537 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 46 predicate places. [2024-06-28 01:32:51,538 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 118 transitions, 936 flow [2024-06-28 01:32:51,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:51,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:51,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:51,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:32:51,538 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:51,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:51,539 INFO L85 PathProgramCache]: Analyzing trace with hash 321569017, now seen corresponding path program 2 times [2024-06-28 01:32:51,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:51,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561465814] [2024-06-28 01:32:51,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:51,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:52,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:52,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:52,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561465814] [2024-06-28 01:32:52,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561465814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:52,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:52,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:52,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235597737] [2024-06-28 01:32:52,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:52,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:52,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:52,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:52,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:52,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:32:52,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 118 transitions, 936 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:52,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:52,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:32:52,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:53,629 INFO L124 PetriNetUnfolderBase]: 5141/7938 cut-off events. [2024-06-28 01:32:53,630 INFO L125 PetriNetUnfolderBase]: For 60543/60549 co-relation queries the response was YES. [2024-06-28 01:32:53,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32660 conditions, 7938 events. 5141/7938 cut-off events. For 60543/60549 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 48192 event pairs, 1544 based on Foata normal form. 6/7900 useless extension candidates. Maximal degree in co-relation 32619. Up to 7133 conditions per place. [2024-06-28 01:32:53,683 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 104 selfloop transitions, 38 changer transitions 0/159 dead transitions. [2024-06-28 01:32:53,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 159 transitions, 1372 flow [2024-06-28 01:32:53,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:53,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:53,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-28 01:32:53,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5314285714285715 [2024-06-28 01:32:53,685 INFO L175 Difference]: Start difference. First operand has 102 places, 118 transitions, 936 flow. Second operand 7 states and 186 transitions. [2024-06-28 01:32:53,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 159 transitions, 1372 flow [2024-06-28 01:32:53,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 159 transitions, 1304 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:53,734 INFO L231 Difference]: Finished difference. Result has 108 places, 122 transitions, 1038 flow [2024-06-28 01:32:53,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1038, PETRI_PLACES=108, PETRI_TRANSITIONS=122} [2024-06-28 01:32:53,735 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 52 predicate places. [2024-06-28 01:32:53,735 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 122 transitions, 1038 flow [2024-06-28 01:32:53,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:53,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:53,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:53,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:32:53,735 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:53,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:53,735 INFO L85 PathProgramCache]: Analyzing trace with hash 325288242, now seen corresponding path program 1 times [2024-06-28 01:32:53,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:53,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965154952] [2024-06-28 01:32:53,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:53,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:54,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:54,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:54,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965154952] [2024-06-28 01:32:54,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965154952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:54,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:54,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:54,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694586109] [2024-06-28 01:32:54,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:54,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:54,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:54,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:54,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:54,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:32:54,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 122 transitions, 1038 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:54,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:54,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:32:54,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:55,614 INFO L124 PetriNetUnfolderBase]: 5439/8738 cut-off events. [2024-06-28 01:32:55,614 INFO L125 PetriNetUnfolderBase]: For 68075/68084 co-relation queries the response was YES. [2024-06-28 01:32:55,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35306 conditions, 8738 events. 5439/8738 cut-off events. For 68075/68084 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 55915 event pairs, 1908 based on Foata normal form. 8/8526 useless extension candidates. Maximal degree in co-relation 35261. Up to 7486 conditions per place. [2024-06-28 01:32:55,682 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 117 selfloop transitions, 39 changer transitions 0/166 dead transitions. [2024-06-28 01:32:55,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 166 transitions, 1558 flow [2024-06-28 01:32:55,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:55,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:55,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-28 01:32:55,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342857142857143 [2024-06-28 01:32:55,684 INFO L175 Difference]: Start difference. First operand has 108 places, 122 transitions, 1038 flow. Second operand 7 states and 187 transitions. [2024-06-28 01:32:55,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 166 transitions, 1558 flow [2024-06-28 01:32:55,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 166 transitions, 1485 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:55,741 INFO L231 Difference]: Finished difference. Result has 111 places, 125 transitions, 1083 flow [2024-06-28 01:32:55,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1083, PETRI_PLACES=111, PETRI_TRANSITIONS=125} [2024-06-28 01:32:55,742 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 55 predicate places. [2024-06-28 01:32:55,742 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 125 transitions, 1083 flow [2024-06-28 01:32:55,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:55,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:55,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:55,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:32:55,743 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:55,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:55,743 INFO L85 PathProgramCache]: Analyzing trace with hash 325293822, now seen corresponding path program 2 times [2024-06-28 01:32:55,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:55,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681425121] [2024-06-28 01:32:55,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:55,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:56,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:56,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:56,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681425121] [2024-06-28 01:32:56,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681425121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:56,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:56,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:56,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329324510] [2024-06-28 01:32:56,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:56,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:56,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:56,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:56,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:56,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:32:56,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 125 transitions, 1083 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:56,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:56,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:32:56,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:57,781 INFO L124 PetriNetUnfolderBase]: 5676/9126 cut-off events. [2024-06-28 01:32:57,781 INFO L125 PetriNetUnfolderBase]: For 75065/75074 co-relation queries the response was YES. [2024-06-28 01:32:57,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37725 conditions, 9126 events. 5676/9126 cut-off events. For 75065/75074 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 58220 event pairs, 1974 based on Foata normal form. 8/8905 useless extension candidates. Maximal degree in co-relation 37679. Up to 7817 conditions per place. [2024-06-28 01:32:57,837 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 135 selfloop transitions, 41 changer transitions 0/186 dead transitions. [2024-06-28 01:32:57,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 186 transitions, 1933 flow [2024-06-28 01:32:57,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:57,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:57,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:32:57,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-28 01:32:57,839 INFO L175 Difference]: Start difference. First operand has 111 places, 125 transitions, 1083 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:32:57,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 186 transitions, 1933 flow [2024-06-28 01:32:57,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 186 transitions, 1753 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:57,890 INFO L231 Difference]: Finished difference. Result has 117 places, 147 transitions, 1341 flow [2024-06-28 01:32:57,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1341, PETRI_PLACES=117, PETRI_TRANSITIONS=147} [2024-06-28 01:32:57,891 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 61 predicate places. [2024-06-28 01:32:57,891 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 147 transitions, 1341 flow [2024-06-28 01:32:57,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:57,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:57,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:57,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:32:57,892 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:57,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:57,892 INFO L85 PathProgramCache]: Analyzing trace with hash 325294039, now seen corresponding path program 1 times [2024-06-28 01:32:57,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:57,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082690643] [2024-06-28 01:32:57,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:57,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:58,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:58,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:58,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082690643] [2024-06-28 01:32:58,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082690643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:58,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:58,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:58,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034331129] [2024-06-28 01:32:58,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:58,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:58,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:58,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:58,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:58,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:32:58,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 147 transitions, 1341 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:58,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:58,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:32:58,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:00,021 INFO L124 PetriNetUnfolderBase]: 5834/9087 cut-off events. [2024-06-28 01:33:00,021 INFO L125 PetriNetUnfolderBase]: For 82023/82032 co-relation queries the response was YES. [2024-06-28 01:33:00,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38977 conditions, 9087 events. 5834/9087 cut-off events. For 82023/82032 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 56086 event pairs, 1736 based on Foata normal form. 10/8960 useless extension candidates. Maximal degree in co-relation 38927. Up to 7605 conditions per place. [2024-06-28 01:33:00,087 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 137 selfloop transitions, 59 changer transitions 0/206 dead transitions. [2024-06-28 01:33:00,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 206 transitions, 2033 flow [2024-06-28 01:33:00,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:00,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:00,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-28 01:33:00,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5325 [2024-06-28 01:33:00,088 INFO L175 Difference]: Start difference. First operand has 117 places, 147 transitions, 1341 flow. Second operand 8 states and 213 transitions. [2024-06-28 01:33:00,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 206 transitions, 2033 flow [2024-06-28 01:33:00,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 206 transitions, 2015 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-28 01:33:00,147 INFO L231 Difference]: Finished difference. Result has 125 places, 158 transitions, 1568 flow [2024-06-28 01:33:00,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1568, PETRI_PLACES=125, PETRI_TRANSITIONS=158} [2024-06-28 01:33:00,148 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 69 predicate places. [2024-06-28 01:33:00,148 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 158 transitions, 1568 flow [2024-06-28 01:33:00,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:00,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:00,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:00,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:33:00,150 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:00,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:00,150 INFO L85 PathProgramCache]: Analyzing trace with hash 609957753, now seen corresponding path program 2 times [2024-06-28 01:33:00,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:00,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986323954] [2024-06-28 01:33:00,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:00,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:00,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:00,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:00,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986323954] [2024-06-28 01:33:00,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986323954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:00,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:00,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:00,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218375766] [2024-06-28 01:33:00,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:00,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:00,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:00,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:00,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:01,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:01,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 158 transitions, 1568 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:01,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:01,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:01,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:02,315 INFO L124 PetriNetUnfolderBase]: 5880/9257 cut-off events. [2024-06-28 01:33:02,315 INFO L125 PetriNetUnfolderBase]: For 96081/96081 co-relation queries the response was YES. [2024-06-28 01:33:02,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42298 conditions, 9257 events. 5880/9257 cut-off events. For 96081/96081 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 58328 event pairs, 2100 based on Foata normal form. 4/9120 useless extension candidates. Maximal degree in co-relation 42244. Up to 8199 conditions per place. [2024-06-28 01:33:02,382 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 165 selfloop transitions, 31 changer transitions 0/206 dead transitions. [2024-06-28 01:33:02,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 206 transitions, 2234 flow [2024-06-28 01:33:02,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:02,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:02,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 01:33:02,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075 [2024-06-28 01:33:02,383 INFO L175 Difference]: Start difference. First operand has 125 places, 158 transitions, 1568 flow. Second operand 8 states and 203 transitions. [2024-06-28 01:33:02,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 206 transitions, 2234 flow [2024-06-28 01:33:02,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 206 transitions, 2183 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:02,469 INFO L231 Difference]: Finished difference. Result has 130 places, 164 transitions, 1669 flow [2024-06-28 01:33:02,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1517, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1669, PETRI_PLACES=130, PETRI_TRANSITIONS=164} [2024-06-28 01:33:02,469 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 74 predicate places. [2024-06-28 01:33:02,470 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 164 transitions, 1669 flow [2024-06-28 01:33:02,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:02,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:02,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:02,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:33:02,470 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:02,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:02,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1878737893, now seen corresponding path program 3 times [2024-06-28 01:33:02,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:02,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321875421] [2024-06-28 01:33:02,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:02,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:03,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:03,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:03,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321875421] [2024-06-28 01:33:03,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321875421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:03,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:03,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:03,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445828779] [2024-06-28 01:33:03,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:03,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:03,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:03,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:03,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:03,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:03,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 164 transitions, 1669 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:03,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:03,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:03,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:04,594 INFO L124 PetriNetUnfolderBase]: 5926/9333 cut-off events. [2024-06-28 01:33:04,595 INFO L125 PetriNetUnfolderBase]: For 104693/104693 co-relation queries the response was YES. [2024-06-28 01:33:04,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43249 conditions, 9333 events. 5926/9333 cut-off events. For 104693/104693 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 58910 event pairs, 2104 based on Foata normal form. 4/9193 useless extension candidates. Maximal degree in co-relation 43192. Up to 8304 conditions per place. [2024-06-28 01:33:04,668 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 170 selfloop transitions, 27 changer transitions 0/207 dead transitions. [2024-06-28 01:33:04,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 207 transitions, 2297 flow [2024-06-28 01:33:04,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:04,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:04,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 01:33:04,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:33:04,669 INFO L175 Difference]: Start difference. First operand has 130 places, 164 transitions, 1669 flow. Second operand 8 states and 200 transitions. [2024-06-28 01:33:04,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 207 transitions, 2297 flow [2024-06-28 01:33:04,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 207 transitions, 2238 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:04,757 INFO L231 Difference]: Finished difference. Result has 134 places, 167 transitions, 1716 flow [2024-06-28 01:33:04,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1610, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1716, PETRI_PLACES=134, PETRI_TRANSITIONS=167} [2024-06-28 01:33:04,758 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 78 predicate places. [2024-06-28 01:33:04,758 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 167 transitions, 1716 flow [2024-06-28 01:33:04,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:04,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:04,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:04,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:33:04,758 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:04,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:04,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1878738110, now seen corresponding path program 3 times [2024-06-28 01:33:04,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:04,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688851327] [2024-06-28 01:33:04,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:04,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:05,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:05,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:05,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688851327] [2024-06-28 01:33:05,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688851327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:05,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:05,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:05,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251005031] [2024-06-28 01:33:05,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:05,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:05,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:05,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:05,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:05,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:05,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 167 transitions, 1716 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:05,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:05,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:05,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:06,677 INFO L124 PetriNetUnfolderBase]: 5921/9330 cut-off events. [2024-06-28 01:33:06,677 INFO L125 PetriNetUnfolderBase]: For 108019/108025 co-relation queries the response was YES. [2024-06-28 01:33:06,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43169 conditions, 9330 events. 5921/9330 cut-off events. For 108019/108025 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 59005 event pairs, 2112 based on Foata normal form. 6/9190 useless extension candidates. Maximal degree in co-relation 43111. Up to 8365 conditions per place. [2024-06-28 01:33:06,758 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 167 selfloop transitions, 20 changer transitions 0/197 dead transitions. [2024-06-28 01:33:06,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 197 transitions, 2176 flow [2024-06-28 01:33:06,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:06,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:06,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 01:33:06,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49142857142857144 [2024-06-28 01:33:06,759 INFO L175 Difference]: Start difference. First operand has 134 places, 167 transitions, 1716 flow. Second operand 7 states and 172 transitions. [2024-06-28 01:33:06,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 197 transitions, 2176 flow [2024-06-28 01:33:06,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 197 transitions, 2069 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:06,877 INFO L231 Difference]: Finished difference. Result has 135 places, 167 transitions, 1657 flow [2024-06-28 01:33:06,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1609, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1657, PETRI_PLACES=135, PETRI_TRANSITIONS=167} [2024-06-28 01:33:06,877 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 79 predicate places. [2024-06-28 01:33:06,877 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 167 transitions, 1657 flow [2024-06-28 01:33:06,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:06,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:06,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:06,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:33:06,878 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:06,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:06,878 INFO L85 PathProgramCache]: Analyzing trace with hash 618498873, now seen corresponding path program 4 times [2024-06-28 01:33:06,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:06,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771033711] [2024-06-28 01:33:06,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:06,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:07,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:07,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:07,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771033711] [2024-06-28 01:33:07,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771033711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:07,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:07,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:07,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433095309] [2024-06-28 01:33:07,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:07,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:07,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:07,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:07,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:07,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:07,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 167 transitions, 1657 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:07,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:07,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:07,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:09,038 INFO L124 PetriNetUnfolderBase]: 5911/9318 cut-off events. [2024-06-28 01:33:09,038 INFO L125 PetriNetUnfolderBase]: For 111963/111963 co-relation queries the response was YES. [2024-06-28 01:33:09,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42984 conditions, 9318 events. 5911/9318 cut-off events. For 111963/111963 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 58859 event pairs, 2108 based on Foata normal form. 4/9176 useless extension candidates. Maximal degree in co-relation 42925. Up to 8338 conditions per place. [2024-06-28 01:33:09,099 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 170 selfloop transitions, 22 changer transitions 0/202 dead transitions. [2024-06-28 01:33:09,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 202 transitions, 2133 flow [2024-06-28 01:33:09,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:09,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:09,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 01:33:09,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.485 [2024-06-28 01:33:09,100 INFO L175 Difference]: Start difference. First operand has 135 places, 167 transitions, 1657 flow. Second operand 8 states and 194 transitions. [2024-06-28 01:33:09,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 202 transitions, 2133 flow [2024-06-28 01:33:09,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 202 transitions, 2073 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:09,182 INFO L231 Difference]: Finished difference. Result has 138 places, 167 transitions, 1649 flow [2024-06-28 01:33:09,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1597, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1649, PETRI_PLACES=138, PETRI_TRANSITIONS=167} [2024-06-28 01:33:09,183 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 82 predicate places. [2024-06-28 01:33:09,183 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 167 transitions, 1649 flow [2024-06-28 01:33:09,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:09,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:09,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:09,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:33:09,183 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:09,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:09,184 INFO L85 PathProgramCache]: Analyzing trace with hash 449112612, now seen corresponding path program 4 times [2024-06-28 01:33:09,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:09,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994929529] [2024-06-28 01:33:09,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:09,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:09,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:09,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:09,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994929529] [2024-06-28 01:33:09,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994929529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:09,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:09,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:09,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371378591] [2024-06-28 01:33:09,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:09,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:09,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:09,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:09,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:09,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:09,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 167 transitions, 1649 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:09,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:09,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:09,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:11,434 INFO L124 PetriNetUnfolderBase]: 6248/9854 cut-off events. [2024-06-28 01:33:11,435 INFO L125 PetriNetUnfolderBase]: For 120844/120850 co-relation queries the response was YES. [2024-06-28 01:33:11,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46549 conditions, 9854 events. 6248/9854 cut-off events. For 120844/120850 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 62565 event pairs, 2030 based on Foata normal form. 6/9699 useless extension candidates. Maximal degree in co-relation 46489. Up to 8296 conditions per place. [2024-06-28 01:33:11,515 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 185 selfloop transitions, 95 changer transitions 0/290 dead transitions. [2024-06-28 01:33:11,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 290 transitions, 3337 flow [2024-06-28 01:33:11,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:11,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:11,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 01:33:11,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-06-28 01:33:11,517 INFO L175 Difference]: Start difference. First operand has 138 places, 167 transitions, 1649 flow. Second operand 8 states and 208 transitions. [2024-06-28 01:33:11,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 290 transitions, 3337 flow [2024-06-28 01:33:11,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 290 transitions, 3225 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:11,655 INFO L231 Difference]: Finished difference. Result has 141 places, 232 transitions, 2650 flow [2024-06-28 01:33:11,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2650, PETRI_PLACES=141, PETRI_TRANSITIONS=232} [2024-06-28 01:33:11,655 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 85 predicate places. [2024-06-28 01:33:11,655 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 232 transitions, 2650 flow [2024-06-28 01:33:11,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:11,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:11,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:11,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:33:11,656 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:11,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:11,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1679530898, now seen corresponding path program 1 times [2024-06-28 01:33:11,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:11,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886632135] [2024-06-28 01:33:11,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:11,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:12,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:12,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:12,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886632135] [2024-06-28 01:33:12,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886632135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:12,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:12,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:33:12,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253059922] [2024-06-28 01:33:12,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:12,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:33:12,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:12,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:33:12,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:33:12,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:33:12,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 232 transitions, 2650 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:12,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:12,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:33:12,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:13,879 INFO L124 PetriNetUnfolderBase]: 7612/11845 cut-off events. [2024-06-28 01:33:13,879 INFO L125 PetriNetUnfolderBase]: For 167091/167103 co-relation queries the response was YES. [2024-06-28 01:33:13,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57239 conditions, 11845 events. 7612/11845 cut-off events. For 167091/167103 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 75198 event pairs, 2824 based on Foata normal form. 1/11620 useless extension candidates. Maximal degree in co-relation 57176. Up to 10707 conditions per place. [2024-06-28 01:33:13,973 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 203 selfloop transitions, 15 changer transitions 0/254 dead transitions. [2024-06-28 01:33:13,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 254 transitions, 3188 flow [2024-06-28 01:33:13,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:33:13,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:33:13,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-28 01:33:13,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45666666666666667 [2024-06-28 01:33:13,974 INFO L175 Difference]: Start difference. First operand has 141 places, 232 transitions, 2650 flow. Second operand 6 states and 137 transitions. [2024-06-28 01:33:13,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 254 transitions, 3188 flow [2024-06-28 01:33:14,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 254 transitions, 3114 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:14,112 INFO L231 Difference]: Finished difference. Result has 144 places, 235 transitions, 2650 flow [2024-06-28 01:33:14,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2576, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2650, PETRI_PLACES=144, PETRI_TRANSITIONS=235} [2024-06-28 01:33:14,112 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 88 predicate places. [2024-06-28 01:33:14,112 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 235 transitions, 2650 flow [2024-06-28 01:33:14,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:14,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:14,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:14,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:33:14,113 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:14,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:14,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1639878940, now seen corresponding path program 1 times [2024-06-28 01:33:14,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:14,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557005835] [2024-06-28 01:33:14,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:14,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:15,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:15,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:15,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557005835] [2024-06-28 01:33:15,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557005835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:15,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:15,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:15,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083430092] [2024-06-28 01:33:15,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:15,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:15,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:15,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:15,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:15,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:33:15,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 235 transitions, 2650 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:15,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:15,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:33:15,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:16,702 INFO L124 PetriNetUnfolderBase]: 6235/10022 cut-off events. [2024-06-28 01:33:16,702 INFO L125 PetriNetUnfolderBase]: For 159133/159157 co-relation queries the response was YES. [2024-06-28 01:33:16,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51222 conditions, 10022 events. 6235/10022 cut-off events. For 159133/159157 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 66275 event pairs, 1577 based on Foata normal form. 8/9816 useless extension candidates. Maximal degree in co-relation 51157. Up to 8150 conditions per place. [2024-06-28 01:33:16,796 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 207 selfloop transitions, 58 changer transitions 0/304 dead transitions. [2024-06-28 01:33:16,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 304 transitions, 3596 flow [2024-06-28 01:33:16,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:16,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:16,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-28 01:33:16,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-06-28 01:33:16,797 INFO L175 Difference]: Start difference. First operand has 144 places, 235 transitions, 2650 flow. Second operand 8 states and 216 transitions. [2024-06-28 01:33:16,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 304 transitions, 3596 flow [2024-06-28 01:33:16,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 304 transitions, 3546 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:16,979 INFO L231 Difference]: Finished difference. Result has 150 places, 251 transitions, 2895 flow [2024-06-28 01:33:16,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2600, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2895, PETRI_PLACES=150, PETRI_TRANSITIONS=251} [2024-06-28 01:33:16,980 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 94 predicate places. [2024-06-28 01:33:16,980 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 251 transitions, 2895 flow [2024-06-28 01:33:16,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:16,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:16,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:16,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:33:16,981 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:16,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:16,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1218144308, now seen corresponding path program 1 times [2024-06-28 01:33:16,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:16,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442526180] [2024-06-28 01:33:16,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:16,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:18,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:18,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:18,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442526180] [2024-06-28 01:33:18,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442526180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:18,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:18,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:18,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243073863] [2024-06-28 01:33:18,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:18,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:18,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:18,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:18,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:18,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:18,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 251 transitions, 2895 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:18,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:18,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:18,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:19,708 INFO L124 PetriNetUnfolderBase]: 6580/10301 cut-off events. [2024-06-28 01:33:19,708 INFO L125 PetriNetUnfolderBase]: For 171458/171464 co-relation queries the response was YES. [2024-06-28 01:33:19,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54391 conditions, 10301 events. 6580/10301 cut-off events. For 171458/171464 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 65465 event pairs, 2012 based on Foata normal form. 6/10126 useless extension candidates. Maximal degree in co-relation 54323. Up to 8385 conditions per place. [2024-06-28 01:33:19,798 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 187 selfloop transitions, 129 changer transitions 0/327 dead transitions. [2024-06-28 01:33:19,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 327 transitions, 3974 flow [2024-06-28 01:33:19,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:19,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:19,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 261 transitions. [2024-06-28 01:33:19,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.522 [2024-06-28 01:33:19,800 INFO L175 Difference]: Start difference. First operand has 150 places, 251 transitions, 2895 flow. Second operand 10 states and 261 transitions. [2024-06-28 01:33:19,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 327 transitions, 3974 flow [2024-06-28 01:33:19,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 327 transitions, 3892 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:19,978 INFO L231 Difference]: Finished difference. Result has 158 places, 258 transitions, 3192 flow [2024-06-28 01:33:19,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2813, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3192, PETRI_PLACES=158, PETRI_TRANSITIONS=258} [2024-06-28 01:33:19,979 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 102 predicate places. [2024-06-28 01:33:19,979 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 258 transitions, 3192 flow [2024-06-28 01:33:19,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:19,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:19,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:19,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:33:19,979 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:19,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:19,980 INFO L85 PathProgramCache]: Analyzing trace with hash 729272998, now seen corresponding path program 2 times [2024-06-28 01:33:19,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:19,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647005113] [2024-06-28 01:33:19,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:19,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:21,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:21,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:21,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647005113] [2024-06-28 01:33:21,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647005113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:21,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:21,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:21,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523971981] [2024-06-28 01:33:21,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:21,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:21,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:21,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:21,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:21,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:33:21,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 258 transitions, 3192 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:21,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:21,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:33:21,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:22,933 INFO L124 PetriNetUnfolderBase]: 6255/9991 cut-off events. [2024-06-28 01:33:22,933 INFO L125 PetriNetUnfolderBase]: For 182828/182866 co-relation queries the response was YES. [2024-06-28 01:33:22,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54314 conditions, 9991 events. 6255/9991 cut-off events. For 182828/182866 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 65327 event pairs, 1894 based on Foata normal form. 8/9801 useless extension candidates. Maximal degree in co-relation 54243. Up to 8292 conditions per place. [2024-06-28 01:33:23,015 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 220 selfloop transitions, 57 changer transitions 0/318 dead transitions. [2024-06-28 01:33:23,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 318 transitions, 3984 flow [2024-06-28 01:33:23,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:23,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:23,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-28 01:33:23,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5311111111111111 [2024-06-28 01:33:23,017 INFO L175 Difference]: Start difference. First operand has 158 places, 258 transitions, 3192 flow. Second operand 9 states and 239 transitions. [2024-06-28 01:33:23,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 318 transitions, 3984 flow [2024-06-28 01:33:23,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 318 transitions, 3814 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:23,196 INFO L231 Difference]: Finished difference. Result has 162 places, 258 transitions, 3144 flow [2024-06-28 01:33:23,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3022, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3144, PETRI_PLACES=162, PETRI_TRANSITIONS=258} [2024-06-28 01:33:23,197 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 106 predicate places. [2024-06-28 01:33:23,197 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 258 transitions, 3144 flow [2024-06-28 01:33:23,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:23,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:23,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:23,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:33:23,198 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:23,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:23,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1336231988, now seen corresponding path program 2 times [2024-06-28 01:33:23,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:23,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942376872] [2024-06-28 01:33:23,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:23,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:24,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:24,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:24,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942376872] [2024-06-28 01:33:24,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942376872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:24,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:24,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:24,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179274634] [2024-06-28 01:33:24,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:24,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:24,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:24,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:24,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:24,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:24,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 258 transitions, 3144 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:24,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:24,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:24,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:25,856 INFO L124 PetriNetUnfolderBase]: 6590/10288 cut-off events. [2024-06-28 01:33:25,856 INFO L125 PetriNetUnfolderBase]: For 191582/191598 co-relation queries the response was YES. [2024-06-28 01:33:25,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56846 conditions, 10288 events. 6590/10288 cut-off events. For 191582/191598 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 65263 event pairs, 2006 based on Foata normal form. 16/10128 useless extension candidates. Maximal degree in co-relation 56773. Up to 8498 conditions per place. [2024-06-28 01:33:25,959 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 186 selfloop transitions, 128 changer transitions 0/325 dead transitions. [2024-06-28 01:33:25,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 325 transitions, 4169 flow [2024-06-28 01:33:25,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:25,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:25,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 240 transitions. [2024-06-28 01:33:25,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-28 01:33:25,960 INFO L175 Difference]: Start difference. First operand has 162 places, 258 transitions, 3144 flow. Second operand 9 states and 240 transitions. [2024-06-28 01:33:25,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 325 transitions, 4169 flow [2024-06-28 01:33:26,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 325 transitions, 4046 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:26,141 INFO L231 Difference]: Finished difference. Result has 164 places, 261 transitions, 3327 flow [2024-06-28 01:33:26,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3021, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3327, PETRI_PLACES=164, PETRI_TRANSITIONS=261} [2024-06-28 01:33:26,142 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 108 predicate places. [2024-06-28 01:33:26,142 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 261 transitions, 3327 flow [2024-06-28 01:33:26,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:26,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:26,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:26,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:33:26,143 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:26,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:26,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1336236824, now seen corresponding path program 1 times [2024-06-28 01:33:26,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:26,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361495837] [2024-06-28 01:33:26,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:26,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:27,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:27,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:27,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361495837] [2024-06-28 01:33:27,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361495837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:27,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:27,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:27,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971795333] [2024-06-28 01:33:27,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:27,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:27,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:27,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:27,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:27,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:27,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 261 transitions, 3327 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:27,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:27,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:27,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:28,675 INFO L124 PetriNetUnfolderBase]: 6624/10320 cut-off events. [2024-06-28 01:33:28,676 INFO L125 PetriNetUnfolderBase]: For 203139/203155 co-relation queries the response was YES. [2024-06-28 01:33:28,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57911 conditions, 10320 events. 6624/10320 cut-off events. For 203139/203155 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 65220 event pairs, 1874 based on Foata normal form. 15/10157 useless extension candidates. Maximal degree in co-relation 57837. Up to 8270 conditions per place. [2024-06-28 01:33:28,773 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 189 selfloop transitions, 120 changer transitions 0/320 dead transitions. [2024-06-28 01:33:28,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 320 transitions, 4315 flow [2024-06-28 01:33:28,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:28,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:28,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2024-06-28 01:33:28,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425 [2024-06-28 01:33:28,774 INFO L175 Difference]: Start difference. First operand has 164 places, 261 transitions, 3327 flow. Second operand 8 states and 217 transitions. [2024-06-28 01:33:28,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 320 transitions, 4315 flow [2024-06-28 01:33:28,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 320 transitions, 4039 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:28,982 INFO L231 Difference]: Finished difference. Result has 165 places, 264 transitions, 3341 flow [2024-06-28 01:33:28,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3051, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3341, PETRI_PLACES=165, PETRI_TRANSITIONS=264} [2024-06-28 01:33:28,983 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 109 predicate places. [2024-06-28 01:33:28,983 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 264 transitions, 3341 flow [2024-06-28 01:33:28,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:28,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:28,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:28,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:33:28,983 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:28,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:28,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1336416314, now seen corresponding path program 2 times [2024-06-28 01:33:28,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:28,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573956834] [2024-06-28 01:33:28,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:28,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:28,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:29,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:29,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:29,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573956834] [2024-06-28 01:33:29,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573956834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:29,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:29,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:29,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085087652] [2024-06-28 01:33:29,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:29,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:29,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:29,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:29,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:29,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:29,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 264 transitions, 3341 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:29,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:29,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:29,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:31,486 INFO L124 PetriNetUnfolderBase]: 6738/10546 cut-off events. [2024-06-28 01:33:31,486 INFO L125 PetriNetUnfolderBase]: For 219496/219502 co-relation queries the response was YES. [2024-06-28 01:33:31,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59365 conditions, 10546 events. 6738/10546 cut-off events. For 219496/219502 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 67254 event pairs, 1947 based on Foata normal form. 5/10366 useless extension candidates. Maximal degree in co-relation 59290. Up to 8372 conditions per place. [2024-06-28 01:33:31,588 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 178 selfloop transitions, 133 changer transitions 0/322 dead transitions. [2024-06-28 01:33:31,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 322 transitions, 4478 flow [2024-06-28 01:33:31,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:31,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:31,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-28 01:33:31,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-06-28 01:33:31,589 INFO L175 Difference]: Start difference. First operand has 165 places, 264 transitions, 3341 flow. Second operand 8 states and 215 transitions. [2024-06-28 01:33:31,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 322 transitions, 4478 flow [2024-06-28 01:33:31,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 322 transitions, 4168 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:31,812 INFO L231 Difference]: Finished difference. Result has 167 places, 270 transitions, 3394 flow [2024-06-28 01:33:31,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3051, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3394, PETRI_PLACES=167, PETRI_TRANSITIONS=270} [2024-06-28 01:33:31,813 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 111 predicate places. [2024-06-28 01:33:31,813 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 270 transitions, 3394 flow [2024-06-28 01:33:31,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:31,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:31,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:31,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:33:31,813 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:31,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:31,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1336409618, now seen corresponding path program 3 times [2024-06-28 01:33:31,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:31,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131344428] [2024-06-28 01:33:31,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:31,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:32,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:32,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:32,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131344428] [2024-06-28 01:33:32,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131344428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:32,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:32,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:32,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595613313] [2024-06-28 01:33:32,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:32,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:32,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:32,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:32,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:33,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:33,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 270 transitions, 3394 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:33,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:33,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:33,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:34,571 INFO L124 PetriNetUnfolderBase]: 6761/10580 cut-off events. [2024-06-28 01:33:34,572 INFO L125 PetriNetUnfolderBase]: For 227461/227467 co-relation queries the response was YES. [2024-06-28 01:33:34,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59838 conditions, 10580 events. 6761/10580 cut-off events. For 227461/227467 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 67579 event pairs, 2043 based on Foata normal form. 6/10402 useless extension candidates. Maximal degree in co-relation 59762. Up to 8876 conditions per place. [2024-06-28 01:33:34,684 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 189 selfloop transitions, 121 changer transitions 0/321 dead transitions. [2024-06-28 01:33:34,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 321 transitions, 4243 flow [2024-06-28 01:33:34,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:34,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:34,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 01:33:34,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-28 01:33:34,686 INFO L175 Difference]: Start difference. First operand has 167 places, 270 transitions, 3394 flow. Second operand 8 states and 205 transitions. [2024-06-28 01:33:34,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 321 transitions, 4243 flow [2024-06-28 01:33:34,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 321 transitions, 4035 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:34,951 INFO L231 Difference]: Finished difference. Result has 171 places, 273 transitions, 3483 flow [2024-06-28 01:33:34,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3186, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3483, PETRI_PLACES=171, PETRI_TRANSITIONS=273} [2024-06-28 01:33:34,952 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 115 predicate places. [2024-06-28 01:33:34,952 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 273 transitions, 3483 flow [2024-06-28 01:33:34,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:34,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:34,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:34,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:33:34,952 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:34,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:34,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1494175730, now seen corresponding path program 3 times [2024-06-28 01:33:34,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:34,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641306997] [2024-06-28 01:33:34,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:34,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:35,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:35,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:35,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641306997] [2024-06-28 01:33:35,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641306997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:35,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:35,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:35,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954204139] [2024-06-28 01:33:35,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:35,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:35,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:35,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:35,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:35,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:35,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 273 transitions, 3483 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:35,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:35,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:35,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:37,421 INFO L124 PetriNetUnfolderBase]: 6751/10549 cut-off events. [2024-06-28 01:33:37,421 INFO L125 PetriNetUnfolderBase]: For 238639/238645 co-relation queries the response was YES. [2024-06-28 01:33:37,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59806 conditions, 10549 events. 6751/10549 cut-off events. For 238639/238645 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 67211 event pairs, 1949 based on Foata normal form. 5/10371 useless extension candidates. Maximal degree in co-relation 59729. Up to 8396 conditions per place. [2024-06-28 01:33:37,532 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 192 selfloop transitions, 124 changer transitions 0/327 dead transitions. [2024-06-28 01:33:37,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 327 transitions, 4451 flow [2024-06-28 01:33:37,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:37,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:37,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-28 01:33:37,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-06-28 01:33:37,533 INFO L175 Difference]: Start difference. First operand has 171 places, 273 transitions, 3483 flow. Second operand 8 states and 215 transitions. [2024-06-28 01:33:37,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 327 transitions, 4451 flow [2024-06-28 01:33:37,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 327 transitions, 4183 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:37,798 INFO L231 Difference]: Finished difference. Result has 173 places, 273 transitions, 3475 flow [2024-06-28 01:33:37,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3215, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3475, PETRI_PLACES=173, PETRI_TRANSITIONS=273} [2024-06-28 01:33:37,799 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 117 predicate places. [2024-06-28 01:33:37,799 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 273 transitions, 3475 flow [2024-06-28 01:33:37,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:37,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:37,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:37,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:33:37,799 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:37,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:37,800 INFO L85 PathProgramCache]: Analyzing trace with hash 511579631, now seen corresponding path program 1 times [2024-06-28 01:33:37,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:37,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338985681] [2024-06-28 01:33:37,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:37,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:38,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:38,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:38,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338985681] [2024-06-28 01:33:38,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338985681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:38,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:38,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:33:38,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699928025] [2024-06-28 01:33:38,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:38,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:33:38,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:38,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:33:38,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:33:38,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:38,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 273 transitions, 3475 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:38,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:38,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:38,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:40,162 INFO L124 PetriNetUnfolderBase]: 7464/11797 cut-off events. [2024-06-28 01:33:40,162 INFO L125 PetriNetUnfolderBase]: For 279942/279960 co-relation queries the response was YES. [2024-06-28 01:33:40,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65272 conditions, 11797 events. 7464/11797 cut-off events. For 279942/279960 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 76649 event pairs, 2450 based on Foata normal form. 3/11567 useless extension candidates. Maximal degree in co-relation 65194. Up to 10357 conditions per place. [2024-06-28 01:33:40,283 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 246 selfloop transitions, 22 changer transitions 0/310 dead transitions. [2024-06-28 01:33:40,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 310 transitions, 4292 flow [2024-06-28 01:33:40,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:40,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:40,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-28 01:33:40,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46285714285714286 [2024-06-28 01:33:40,284 INFO L175 Difference]: Start difference. First operand has 173 places, 273 transitions, 3475 flow. Second operand 7 states and 162 transitions. [2024-06-28 01:33:40,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 310 transitions, 4292 flow [2024-06-28 01:33:40,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 310 transitions, 4020 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:40,574 INFO L231 Difference]: Finished difference. Result has 175 places, 285 transitions, 3409 flow [2024-06-28 01:33:40,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3203, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3409, PETRI_PLACES=175, PETRI_TRANSITIONS=285} [2024-06-28 01:33:40,574 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 119 predicate places. [2024-06-28 01:33:40,574 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 285 transitions, 3409 flow [2024-06-28 01:33:40,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:40,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:40,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:40,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:33:40,575 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:40,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:40,575 INFO L85 PathProgramCache]: Analyzing trace with hash 347545848, now seen corresponding path program 4 times [2024-06-28 01:33:40,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:40,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275747382] [2024-06-28 01:33:40,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:40,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:41,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:41,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:41,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275747382] [2024-06-28 01:33:41,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275747382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:41,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:41,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:41,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389197378] [2024-06-28 01:33:41,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:41,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:41,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:41,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:41,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:41,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:41,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 285 transitions, 3409 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:41,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:41,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:41,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:43,102 INFO L124 PetriNetUnfolderBase]: 6860/10761 cut-off events. [2024-06-28 01:33:43,102 INFO L125 PetriNetUnfolderBase]: For 265321/265327 co-relation queries the response was YES. [2024-06-28 01:33:43,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61828 conditions, 10761 events. 6860/10761 cut-off events. For 265321/265327 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 68866 event pairs, 2102 based on Foata normal form. 8/10574 useless extension candidates. Maximal degree in co-relation 61747. Up to 9393 conditions per place. [2024-06-28 01:33:43,210 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 284 selfloop transitions, 42 changer transitions 0/337 dead transitions. [2024-06-28 01:33:43,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 337 transitions, 4422 flow [2024-06-28 01:33:43,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:43,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:43,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 01:33:43,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-06-28 01:33:43,211 INFO L175 Difference]: Start difference. First operand has 175 places, 285 transitions, 3409 flow. Second operand 8 states and 204 transitions. [2024-06-28 01:33:43,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 337 transitions, 4422 flow [2024-06-28 01:33:43,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 337 transitions, 4387 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-28 01:33:43,494 INFO L231 Difference]: Finished difference. Result has 181 places, 288 transitions, 3505 flow [2024-06-28 01:33:43,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3374, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3505, PETRI_PLACES=181, PETRI_TRANSITIONS=288} [2024-06-28 01:33:43,494 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 125 predicate places. [2024-06-28 01:33:43,494 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 288 transitions, 3505 flow [2024-06-28 01:33:43,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:43,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:43,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:43,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:33:43,495 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:43,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:43,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1735072196, now seen corresponding path program 4 times [2024-06-28 01:33:43,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:43,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412987171] [2024-06-28 01:33:43,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:43,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:44,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:44,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:44,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412987171] [2024-06-28 01:33:44,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412987171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:44,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:44,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:44,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034340516] [2024-06-28 01:33:44,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:44,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:44,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:44,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:44,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:44,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:44,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 288 transitions, 3505 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:44,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:44,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:44,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:46,179 INFO L124 PetriNetUnfolderBase]: 6855/10756 cut-off events. [2024-06-28 01:33:46,179 INFO L125 PetriNetUnfolderBase]: For 275586/275592 co-relation queries the response was YES. [2024-06-28 01:33:46,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62314 conditions, 10756 events. 6855/10756 cut-off events. For 275586/275592 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 68852 event pairs, 2117 based on Foata normal form. 6/10567 useless extension candidates. Maximal degree in co-relation 62231. Up to 9556 conditions per place. [2024-06-28 01:33:46,284 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 286 selfloop transitions, 33 changer transitions 0/330 dead transitions. [2024-06-28 01:33:46,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 330 transitions, 4313 flow [2024-06-28 01:33:46,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:46,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:46,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 01:33:46,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49 [2024-06-28 01:33:46,285 INFO L175 Difference]: Start difference. First operand has 181 places, 288 transitions, 3505 flow. Second operand 8 states and 196 transitions. [2024-06-28 01:33:46,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 330 transitions, 4313 flow [2024-06-28 01:33:46,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 330 transitions, 4099 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:46,587 INFO L231 Difference]: Finished difference. Result has 182 places, 288 transitions, 3367 flow [2024-06-28 01:33:46,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3291, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3367, PETRI_PLACES=182, PETRI_TRANSITIONS=288} [2024-06-28 01:33:46,587 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 126 predicate places. [2024-06-28 01:33:46,587 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 288 transitions, 3367 flow [2024-06-28 01:33:46,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:46,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:46,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:46,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:33:46,588 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:46,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:46,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1984429562, now seen corresponding path program 5 times [2024-06-28 01:33:46,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:46,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076916924] [2024-06-28 01:33:46,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:46,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:47,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:47,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076916924] [2024-06-28 01:33:47,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076916924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:47,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:47,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:47,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672757516] [2024-06-28 01:33:47,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:47,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:47,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:47,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:47,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:47,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:47,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 288 transitions, 3367 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:47,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:47,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:47,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:49,149 INFO L124 PetriNetUnfolderBase]: 6901/10830 cut-off events. [2024-06-28 01:33:49,149 INFO L125 PetriNetUnfolderBase]: For 284760/284766 co-relation queries the response was YES. [2024-06-28 01:33:49,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62443 conditions, 10830 events. 6901/10830 cut-off events. For 284760/284766 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 69423 event pairs, 2126 based on Foata normal form. 8/10641 useless extension candidates. Maximal degree in co-relation 62359. Up to 9425 conditions per place. [2024-06-28 01:33:49,259 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 280 selfloop transitions, 46 changer transitions 0/337 dead transitions. [2024-06-28 01:33:49,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 337 transitions, 4362 flow [2024-06-28 01:33:49,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:49,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:49,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 01:33:49,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-28 01:33:49,260 INFO L175 Difference]: Start difference. First operand has 182 places, 288 transitions, 3367 flow. Second operand 8 states and 205 transitions. [2024-06-28 01:33:49,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 337 transitions, 4362 flow [2024-06-28 01:33:49,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 337 transitions, 4263 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:49,583 INFO L231 Difference]: Finished difference. Result has 183 places, 291 transitions, 3396 flow [2024-06-28 01:33:49,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3268, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3396, PETRI_PLACES=183, PETRI_TRANSITIONS=291} [2024-06-28 01:33:49,583 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 127 predicate places. [2024-06-28 01:33:49,584 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 291 transitions, 3396 flow [2024-06-28 01:33:49,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:49,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:49,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:49,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:33:49,584 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:49,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:49,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1735309532, now seen corresponding path program 6 times [2024-06-28 01:33:49,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:49,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109648935] [2024-06-28 01:33:49,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:49,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:50,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:50,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:50,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109648935] [2024-06-28 01:33:50,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109648935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:50,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:50,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:50,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197164947] [2024-06-28 01:33:50,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:50,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:50,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:50,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:50,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:50,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:50,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 291 transitions, 3396 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:50,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:50,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:50,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:52,068 INFO L124 PetriNetUnfolderBase]: 6891/10815 cut-off events. [2024-06-28 01:33:52,068 INFO L125 PetriNetUnfolderBase]: For 294889/294895 co-relation queries the response was YES. [2024-06-28 01:33:52,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62628 conditions, 10815 events. 6891/10815 cut-off events. For 294889/294895 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 69402 event pairs, 2124 based on Foata normal form. 8/10626 useless extension candidates. Maximal degree in co-relation 62543. Up to 9593 conditions per place. [2024-06-28 01:33:52,181 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 294 selfloop transitions, 24 changer transitions 0/329 dead transitions. [2024-06-28 01:33:52,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 329 transitions, 4168 flow [2024-06-28 01:33:52,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:52,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:52,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:33:52,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4925 [2024-06-28 01:33:52,182 INFO L175 Difference]: Start difference. First operand has 183 places, 291 transitions, 3396 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:33:52,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 329 transitions, 4168 flow [2024-06-28 01:33:52,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 329 transitions, 4074 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:52,528 INFO L231 Difference]: Finished difference. Result has 186 places, 291 transitions, 3358 flow [2024-06-28 01:33:52,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3302, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3358, PETRI_PLACES=186, PETRI_TRANSITIONS=291} [2024-06-28 01:33:52,529 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 130 predicate places. [2024-06-28 01:33:52,530 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 291 transitions, 3358 flow [2024-06-28 01:33:52,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:52,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:52,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:52,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:33:52,530 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:52,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:52,530 INFO L85 PathProgramCache]: Analyzing trace with hash 525834671, now seen corresponding path program 2 times [2024-06-28 01:33:52,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:52,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137645868] [2024-06-28 01:33:52,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:52,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:53,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:53,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:53,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137645868] [2024-06-28 01:33:53,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137645868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:53,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:53,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:53,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440595797] [2024-06-28 01:33:53,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:53,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:53,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:53,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:53,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:53,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:53,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 291 transitions, 3358 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:53,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:53,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:53,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:55,032 INFO L124 PetriNetUnfolderBase]: 7580/12003 cut-off events. [2024-06-28 01:33:55,032 INFO L125 PetriNetUnfolderBase]: For 342989/343005 co-relation queries the response was YES. [2024-06-28 01:33:55,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67593 conditions, 12003 events. 7580/12003 cut-off events. For 342989/343005 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 78407 event pairs, 2545 based on Foata normal form. 1/11765 useless extension candidates. Maximal degree in co-relation 67507. Up to 10560 conditions per place. [2024-06-28 01:33:55,169 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 251 selfloop transitions, 14 changer transitions 0/307 dead transitions. [2024-06-28 01:33:55,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 307 transitions, 3944 flow [2024-06-28 01:33:55,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:33:55,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:33:55,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 01:33:55,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 01:33:55,170 INFO L175 Difference]: Start difference. First operand has 186 places, 291 transitions, 3358 flow. Second operand 6 states and 140 transitions. [2024-06-28 01:33:55,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 307 transitions, 3944 flow [2024-06-28 01:33:55,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 307 transitions, 3838 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:55,590 INFO L231 Difference]: Finished difference. Result has 184 places, 291 transitions, 3286 flow [2024-06-28 01:33:55,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3252, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3286, PETRI_PLACES=184, PETRI_TRANSITIONS=291} [2024-06-28 01:33:55,591 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 128 predicate places. [2024-06-28 01:33:55,591 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 291 transitions, 3286 flow [2024-06-28 01:33:55,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:55,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:55,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:55,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:33:55,592 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:55,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:55,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1698079919, now seen corresponding path program 3 times [2024-06-28 01:33:55,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:55,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442937790] [2024-06-28 01:33:55,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:55,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:56,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:56,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:56,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442937790] [2024-06-28 01:33:56,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442937790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:56,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:56,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:56,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357012808] [2024-06-28 01:33:56,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:56,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:56,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:56,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:56,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:56,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:56,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 291 transitions, 3286 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:56,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:56,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:56,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:58,175 INFO L124 PetriNetUnfolderBase]: 7636/12254 cut-off events. [2024-06-28 01:33:58,176 INFO L125 PetriNetUnfolderBase]: For 355055/355071 co-relation queries the response was YES. [2024-06-28 01:33:58,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68162 conditions, 12254 events. 7636/12254 cut-off events. For 355055/355071 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 81649 event pairs, 2492 based on Foata normal form. 1/11968 useless extension candidates. Maximal degree in co-relation 68075. Up to 10570 conditions per place. [2024-06-28 01:33:58,307 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 263 selfloop transitions, 43 changer transitions 0/348 dead transitions. [2024-06-28 01:33:58,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 348 transitions, 4257 flow [2024-06-28 01:33:58,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:58,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:58,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 01:33:58,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49714285714285716 [2024-06-28 01:33:58,308 INFO L175 Difference]: Start difference. First operand has 184 places, 291 transitions, 3286 flow. Second operand 7 states and 174 transitions. [2024-06-28 01:33:58,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 348 transitions, 4257 flow [2024-06-28 01:33:58,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 348 transitions, 4198 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:58,700 INFO L231 Difference]: Finished difference. Result has 189 places, 320 transitions, 3632 flow [2024-06-28 01:33:58,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3249, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3632, PETRI_PLACES=189, PETRI_TRANSITIONS=320} [2024-06-28 01:33:58,701 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 133 predicate places. [2024-06-28 01:33:58,701 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 320 transitions, 3632 flow [2024-06-28 01:33:58,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:58,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:58,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:58,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:33:58,702 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:58,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:58,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1297243872, now seen corresponding path program 1 times [2024-06-28 01:33:58,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:58,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9592046] [2024-06-28 01:33:58,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:58,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:59,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:59,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:59,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9592046] [2024-06-28 01:33:59,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9592046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:59,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:59,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:33:59,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058189587] [2024-06-28 01:33:59,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:59,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:33:59,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:59,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:33:59,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:33:59,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:59,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 320 transitions, 3632 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:59,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:59,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:59,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:01,187 INFO L124 PetriNetUnfolderBase]: 7638/12108 cut-off events. [2024-06-28 01:34:01,187 INFO L125 PetriNetUnfolderBase]: For 377358/377374 co-relation queries the response was YES. [2024-06-28 01:34:01,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70421 conditions, 12108 events. 7638/12108 cut-off events. For 377358/377374 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 79291 event pairs, 2508 based on Foata normal form. 1/11864 useless extension candidates. Maximal degree in co-relation 70332. Up to 10602 conditions per place. [2024-06-28 01:34:01,312 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 282 selfloop transitions, 25 changer transitions 0/349 dead transitions. [2024-06-28 01:34:01,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 349 transitions, 4490 flow [2024-06-28 01:34:01,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:34:01,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:34:01,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 01:34:01,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49333333333333335 [2024-06-28 01:34:01,313 INFO L175 Difference]: Start difference. First operand has 189 places, 320 transitions, 3632 flow. Second operand 6 states and 148 transitions. [2024-06-28 01:34:01,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 349 transitions, 4490 flow [2024-06-28 01:34:01,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 349 transitions, 4439 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-28 01:34:01,761 INFO L231 Difference]: Finished difference. Result has 193 places, 326 transitions, 3712 flow [2024-06-28 01:34:01,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3581, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3712, PETRI_PLACES=193, PETRI_TRANSITIONS=326} [2024-06-28 01:34:01,762 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 137 predicate places. [2024-06-28 01:34:01,762 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 326 transitions, 3712 flow [2024-06-28 01:34:01,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:01,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:01,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:01,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:34:01,763 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:01,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:01,763 INFO L85 PathProgramCache]: Analyzing trace with hash 357057919, now seen corresponding path program 1 times [2024-06-28 01:34:01,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:01,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830753923] [2024-06-28 01:34:01,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:01,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:02,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:02,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:02,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830753923] [2024-06-28 01:34:02,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830753923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:02,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:02,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:02,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573121970] [2024-06-28 01:34:02,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:02,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:02,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:02,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:02,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:03,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:34:03,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 326 transitions, 3712 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:03,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:03,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:34:03,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:05,256 INFO L124 PetriNetUnfolderBase]: 7980/12469 cut-off events. [2024-06-28 01:34:05,256 INFO L125 PetriNetUnfolderBase]: For 396719/396719 co-relation queries the response was YES. [2024-06-28 01:34:05,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73717 conditions, 12469 events. 7980/12469 cut-off events. For 396719/396719 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 80026 event pairs, 2465 based on Foata normal form. 4/12219 useless extension candidates. Maximal degree in co-relation 73626. Up to 11100 conditions per place. [2024-06-28 01:34:05,406 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 339 selfloop transitions, 33 changer transitions 0/382 dead transitions. [2024-06-28 01:34:05,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 382 transitions, 4712 flow [2024-06-28 01:34:05,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:05,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:05,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-28 01:34:05,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47555555555555556 [2024-06-28 01:34:05,407 INFO L175 Difference]: Start difference. First operand has 193 places, 326 transitions, 3712 flow. Second operand 9 states and 214 transitions. [2024-06-28 01:34:05,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 382 transitions, 4712 flow [2024-06-28 01:34:05,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 382 transitions, 4666 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-28 01:34:05,878 INFO L231 Difference]: Finished difference. Result has 201 places, 333 transitions, 3826 flow [2024-06-28 01:34:05,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3668, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3826, PETRI_PLACES=201, PETRI_TRANSITIONS=333} [2024-06-28 01:34:05,878 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 145 predicate places. [2024-06-28 01:34:05,878 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 333 transitions, 3826 flow [2024-06-28 01:34:05,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:05,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:05,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:05,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:34:05,879 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:05,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:05,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1495538634, now seen corresponding path program 2 times [2024-06-28 01:34:05,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:05,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178336817] [2024-06-28 01:34:05,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:05,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:06,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:06,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:06,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178336817] [2024-06-28 01:34:06,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178336817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:06,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:06,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:34:06,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929507362] [2024-06-28 01:34:06,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:06,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:34:06,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:06,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:34:06,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:34:06,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:34:06,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 333 transitions, 3826 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:06,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:06,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:34:06,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:08,398 INFO L124 PetriNetUnfolderBase]: 7628/12094 cut-off events. [2024-06-28 01:34:08,398 INFO L125 PetriNetUnfolderBase]: For 409369/409391 co-relation queries the response was YES. [2024-06-28 01:34:08,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72587 conditions, 12094 events. 7628/12094 cut-off events. For 409369/409391 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 79106 event pairs, 2450 based on Foata normal form. 5/11853 useless extension candidates. Maximal degree in co-relation 72493. Up to 10588 conditions per place. [2024-06-28 01:34:08,548 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 285 selfloop transitions, 25 changer transitions 0/352 dead transitions. [2024-06-28 01:34:08,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 352 transitions, 4530 flow [2024-06-28 01:34:08,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:34:08,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:34:08,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-28 01:34:08,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-06-28 01:34:08,550 INFO L175 Difference]: Start difference. First operand has 201 places, 333 transitions, 3826 flow. Second operand 6 states and 144 transitions. [2024-06-28 01:34:08,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 352 transitions, 4530 flow [2024-06-28 01:34:09,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 352 transitions, 4417 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:09,170 INFO L231 Difference]: Finished difference. Result has 201 places, 333 transitions, 3770 flow [2024-06-28 01:34:09,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3713, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3770, PETRI_PLACES=201, PETRI_TRANSITIONS=333} [2024-06-28 01:34:09,170 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 145 predicate places. [2024-06-28 01:34:09,171 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 333 transitions, 3770 flow [2024-06-28 01:34:09,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:09,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:09,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:09,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:34:09,172 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:09,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:09,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1495548554, now seen corresponding path program 1 times [2024-06-28 01:34:09,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:09,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961771205] [2024-06-28 01:34:09,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:09,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:09,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:09,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:09,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961771205] [2024-06-28 01:34:09,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961771205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:09,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:09,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:34:09,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769148697] [2024-06-28 01:34:09,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:09,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:34:09,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:09,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:34:09,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:34:09,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:34:09,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 333 transitions, 3770 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:09,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:09,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:34:09,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:12,099 INFO L124 PetriNetUnfolderBase]: 8156/12523 cut-off events. [2024-06-28 01:34:12,099 INFO L125 PetriNetUnfolderBase]: For 423660/423676 co-relation queries the response was YES. [2024-06-28 01:34:12,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74779 conditions, 12523 events. 8156/12523 cut-off events. For 423660/423676 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 78103 event pairs, 2687 based on Foata normal form. 3/12323 useless extension candidates. Maximal degree in co-relation 74684. Up to 11407 conditions per place. [2024-06-28 01:34:12,224 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 300 selfloop transitions, 21 changer transitions 0/361 dead transitions. [2024-06-28 01:34:12,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 361 transitions, 4554 flow [2024-06-28 01:34:12,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:34:12,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:34:12,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 01:34:12,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542857142857143 [2024-06-28 01:34:12,226 INFO L175 Difference]: Start difference. First operand has 201 places, 333 transitions, 3770 flow. Second operand 7 states and 159 transitions. [2024-06-28 01:34:12,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 361 transitions, 4554 flow [2024-06-28 01:34:12,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 361 transitions, 4476 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:12,563 INFO L231 Difference]: Finished difference. Result has 202 places, 336 transitions, 3788 flow [2024-06-28 01:34:12,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3692, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3788, PETRI_PLACES=202, PETRI_TRANSITIONS=336} [2024-06-28 01:34:12,564 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 146 predicate places. [2024-06-28 01:34:12,564 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 336 transitions, 3788 flow [2024-06-28 01:34:12,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:12,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:12,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:12,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:34:12,565 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:12,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:12,566 INFO L85 PathProgramCache]: Analyzing trace with hash -892320641, now seen corresponding path program 1 times [2024-06-28 01:34:12,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:12,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832372423] [2024-06-28 01:34:12,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:12,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:13,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:13,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:13,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832372423] [2024-06-28 01:34:13,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832372423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:13,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:13,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:13,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820402126] [2024-06-28 01:34:13,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:13,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:13,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:13,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:13,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:13,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:34:13,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 336 transitions, 3788 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:13,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:13,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:34:13,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:15,730 INFO L124 PetriNetUnfolderBase]: 7700/12141 cut-off events. [2024-06-28 01:34:15,730 INFO L125 PetriNetUnfolderBase]: For 435894/435904 co-relation queries the response was YES. [2024-06-28 01:34:15,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74443 conditions, 12141 events. 7700/12141 cut-off events. For 435894/435904 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 79255 event pairs, 1830 based on Foata normal form. 12/11903 useless extension candidates. Maximal degree in co-relation 74348. Up to 9603 conditions per place. [2024-06-28 01:34:15,866 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 254 selfloop transitions, 132 changer transitions 0/398 dead transitions. [2024-06-28 01:34:15,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 398 transitions, 5032 flow [2024-06-28 01:34:15,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:15,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:15,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-28 01:34:15,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2024-06-28 01:34:15,867 INFO L175 Difference]: Start difference. First operand has 202 places, 336 transitions, 3788 flow. Second operand 9 states and 237 transitions. [2024-06-28 01:34:15,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 398 transitions, 5032 flow [2024-06-28 01:34:16,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 398 transitions, 4960 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 01:34:16,322 INFO L231 Difference]: Finished difference. Result has 206 places, 340 transitions, 4059 flow [2024-06-28 01:34:16,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3716, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4059, PETRI_PLACES=206, PETRI_TRANSITIONS=340} [2024-06-28 01:34:16,322 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 150 predicate places. [2024-06-28 01:34:16,322 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 340 transitions, 4059 flow [2024-06-28 01:34:16,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:16,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:16,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:16,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:34:16,323 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:16,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:16,323 INFO L85 PathProgramCache]: Analyzing trace with hash -892234151, now seen corresponding path program 2 times [2024-06-28 01:34:16,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:16,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239239940] [2024-06-28 01:34:16,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:16,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:17,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:17,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:17,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239239940] [2024-06-28 01:34:17,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239239940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:17,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:17,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:17,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921958799] [2024-06-28 01:34:17,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:17,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:17,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:17,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:17,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:17,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:34:17,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 340 transitions, 4059 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:17,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:17,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:34:17,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:19,566 INFO L124 PetriNetUnfolderBase]: 7774/12222 cut-off events. [2024-06-28 01:34:19,566 INFO L125 PetriNetUnfolderBase]: For 460667/460677 co-relation queries the response was YES. [2024-06-28 01:34:19,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76734 conditions, 12222 events. 7774/12222 cut-off events. For 460667/460677 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 79500 event pairs, 2148 based on Foata normal form. 12/11993 useless extension candidates. Maximal degree in co-relation 76638. Up to 9899 conditions per place. [2024-06-28 01:34:19,720 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 261 selfloop transitions, 139 changer transitions 0/412 dead transitions. [2024-06-28 01:34:19,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 412 transitions, 5402 flow [2024-06-28 01:34:19,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:19,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:19,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 263 transitions. [2024-06-28 01:34:19,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526 [2024-06-28 01:34:19,721 INFO L175 Difference]: Start difference. First operand has 206 places, 340 transitions, 4059 flow. Second operand 10 states and 263 transitions. [2024-06-28 01:34:19,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 412 transitions, 5402 flow [2024-06-28 01:34:20,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 412 transitions, 5172 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-28 01:34:20,148 INFO L231 Difference]: Finished difference. Result has 211 places, 344 transitions, 4194 flow [2024-06-28 01:34:20,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3857, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4194, PETRI_PLACES=211, PETRI_TRANSITIONS=344} [2024-06-28 01:34:20,148 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 155 predicate places. [2024-06-28 01:34:20,148 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 344 transitions, 4194 flow [2024-06-28 01:34:20,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:20,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:20,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:20,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:34:20,149 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:20,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:20,149 INFO L85 PathProgramCache]: Analyzing trace with hash -296454021, now seen corresponding path program 3 times [2024-06-28 01:34:20,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:20,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658317321] [2024-06-28 01:34:20,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:20,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:21,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:21,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:21,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658317321] [2024-06-28 01:34:21,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658317321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:21,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:21,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:21,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509144859] [2024-06-28 01:34:21,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:21,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:21,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:21,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:21,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:21,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:34:21,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 344 transitions, 4194 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:21,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:21,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:34:21,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:23,600 INFO L124 PetriNetUnfolderBase]: 7847/12387 cut-off events. [2024-06-28 01:34:23,601 INFO L125 PetriNetUnfolderBase]: For 478663/478673 co-relation queries the response was YES. [2024-06-28 01:34:23,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78124 conditions, 12387 events. 7847/12387 cut-off events. For 478663/478673 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 81268 event pairs, 2215 based on Foata normal form. 12/12145 useless extension candidates. Maximal degree in co-relation 78026. Up to 10017 conditions per place. [2024-06-28 01:34:23,715 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 246 selfloop transitions, 158 changer transitions 0/416 dead transitions. [2024-06-28 01:34:23,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 416 transitions, 5484 flow [2024-06-28 01:34:23,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:23,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:23,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-28 01:34:23,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-06-28 01:34:23,716 INFO L175 Difference]: Start difference. First operand has 211 places, 344 transitions, 4194 flow. Second operand 9 states and 234 transitions. [2024-06-28 01:34:23,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 416 transitions, 5484 flow [2024-06-28 01:34:24,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 416 transitions, 5290 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:24,148 INFO L231 Difference]: Finished difference. Result has 215 places, 360 transitions, 4673 flow [2024-06-28 01:34:24,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4003, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4673, PETRI_PLACES=215, PETRI_TRANSITIONS=360} [2024-06-28 01:34:24,148 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 159 predicate places. [2024-06-28 01:34:24,149 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 360 transitions, 4673 flow [2024-06-28 01:34:24,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:24,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:24,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:24,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:34:24,149 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:24,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:24,150 INFO L85 PathProgramCache]: Analyzing trace with hash -296453866, now seen corresponding path program 1 times [2024-06-28 01:34:24,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:24,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598964154] [2024-06-28 01:34:24,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:24,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:25,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:25,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:25,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598964154] [2024-06-28 01:34:25,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598964154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:25,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:25,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:25,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518389315] [2024-06-28 01:34:25,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:25,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:25,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:25,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:25,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:25,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:34:25,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 360 transitions, 4673 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:25,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:25,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:34:25,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:27,364 INFO L124 PetriNetUnfolderBase]: 7906/12340 cut-off events. [2024-06-28 01:34:27,364 INFO L125 PetriNetUnfolderBase]: For 504618/504628 co-relation queries the response was YES. [2024-06-28 01:34:27,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81465 conditions, 12340 events. 7906/12340 cut-off events. For 504618/504628 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 79780 event pairs, 1812 based on Foata normal form. 9/12130 useless extension candidates. Maximal degree in co-relation 81364. Up to 9199 conditions per place. [2024-06-28 01:34:27,506 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 255 selfloop transitions, 166 changer transitions 0/433 dead transitions. [2024-06-28 01:34:27,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 433 transitions, 6289 flow [2024-06-28 01:34:27,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:27,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:27,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 245 transitions. [2024-06-28 01:34:27,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-06-28 01:34:27,507 INFO L175 Difference]: Start difference. First operand has 215 places, 360 transitions, 4673 flow. Second operand 9 states and 245 transitions. [2024-06-28 01:34:27,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 433 transitions, 6289 flow [2024-06-28 01:34:28,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 433 transitions, 6139 flow, removed 62 selfloop flow, removed 3 redundant places. [2024-06-28 01:34:28,082 INFO L231 Difference]: Finished difference. Result has 222 places, 369 transitions, 5125 flow [2024-06-28 01:34:28,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4533, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5125, PETRI_PLACES=222, PETRI_TRANSITIONS=369} [2024-06-28 01:34:28,083 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 166 predicate places. [2024-06-28 01:34:28,083 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 369 transitions, 5125 flow [2024-06-28 01:34:28,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:28,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:28,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:28,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:34:28,083 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:28,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:28,083 INFO L85 PathProgramCache]: Analyzing trace with hash -805388736, now seen corresponding path program 2 times [2024-06-28 01:34:28,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:28,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347490548] [2024-06-28 01:34:28,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:28,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:29,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:29,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:29,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347490548] [2024-06-28 01:34:29,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347490548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:29,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:29,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:29,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722345683] [2024-06-28 01:34:29,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:29,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:29,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:29,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:29,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:29,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:34:29,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 369 transitions, 5125 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:29,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:29,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:34:29,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:31,651 INFO L124 PetriNetUnfolderBase]: 7974/12470 cut-off events. [2024-06-28 01:34:31,651 INFO L125 PetriNetUnfolderBase]: For 522598/522608 co-relation queries the response was YES. [2024-06-28 01:34:31,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84697 conditions, 12470 events. 7974/12470 cut-off events. For 522598/522608 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 80892 event pairs, 2037 based on Foata normal form. 9/12251 useless extension candidates. Maximal degree in co-relation 84593. Up to 9853 conditions per place. [2024-06-28 01:34:31,811 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 272 selfloop transitions, 161 changer transitions 0/445 dead transitions. [2024-06-28 01:34:31,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 445 transitions, 6671 flow [2024-06-28 01:34:31,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:31,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:31,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 240 transitions. [2024-06-28 01:34:31,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-28 01:34:31,813 INFO L175 Difference]: Start difference. First operand has 222 places, 369 transitions, 5125 flow. Second operand 9 states and 240 transitions. [2024-06-28 01:34:31,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 445 transitions, 6671 flow [2024-06-28 01:34:32,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 445 transitions, 6580 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 01:34:32,496 INFO L231 Difference]: Finished difference. Result has 229 places, 380 transitions, 5599 flow [2024-06-28 01:34:32,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=5040, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5599, PETRI_PLACES=229, PETRI_TRANSITIONS=380} [2024-06-28 01:34:32,497 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 173 predicate places. [2024-06-28 01:34:32,497 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 380 transitions, 5599 flow [2024-06-28 01:34:32,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:32,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:32,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:32,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:34:32,497 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:32,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:32,497 INFO L85 PathProgramCache]: Analyzing trace with hash -805394471, now seen corresponding path program 4 times [2024-06-28 01:34:32,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:32,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919914027] [2024-06-28 01:34:32,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:32,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:33,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:33,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:33,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919914027] [2024-06-28 01:34:33,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919914027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:33,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:33,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:33,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487397330] [2024-06-28 01:34:33,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:33,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:33,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:33,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:33,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:33,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:34:33,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 380 transitions, 5599 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:33,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:33,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:34:33,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:35,925 INFO L124 PetriNetUnfolderBase]: 8054/12638 cut-off events. [2024-06-28 01:34:35,926 INFO L125 PetriNetUnfolderBase]: For 550010/550020 co-relation queries the response was YES. [2024-06-28 01:34:36,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87605 conditions, 12638 events. 8054/12638 cut-off events. For 550010/550020 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 82537 event pairs, 2203 based on Foata normal form. 12/12398 useless extension candidates. Maximal degree in co-relation 87497. Up to 10585 conditions per place. [2024-06-28 01:34:36,088 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 290 selfloop transitions, 147 changer transitions 0/449 dead transitions. [2024-06-28 01:34:36,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 449 transitions, 6904 flow [2024-06-28 01:34:36,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:36,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:36,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-06-28 01:34:36,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133333333333333 [2024-06-28 01:34:36,089 INFO L175 Difference]: Start difference. First operand has 229 places, 380 transitions, 5599 flow. Second operand 9 states and 231 transitions. [2024-06-28 01:34:36,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 449 transitions, 6904 flow [2024-06-28 01:34:36,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 449 transitions, 6518 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-28 01:34:36,842 INFO L231 Difference]: Finished difference. Result has 234 places, 390 transitions, 5688 flow [2024-06-28 01:34:36,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=5213, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5688, PETRI_PLACES=234, PETRI_TRANSITIONS=390} [2024-06-28 01:34:36,843 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 178 predicate places. [2024-06-28 01:34:36,843 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 390 transitions, 5688 flow [2024-06-28 01:34:36,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:36,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:36,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:36,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:34:36,844 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:36,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:36,844 INFO L85 PathProgramCache]: Analyzing trace with hash -805394316, now seen corresponding path program 3 times [2024-06-28 01:34:36,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:36,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090459703] [2024-06-28 01:34:36,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:36,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:37,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:37,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:37,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090459703] [2024-06-28 01:34:37,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090459703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:37,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:37,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:37,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865249662] [2024-06-28 01:34:37,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:37,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:37,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:37,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:37,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:38,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:34:38,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 390 transitions, 5688 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:38,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:38,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:34:38,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:40,210 INFO L124 PetriNetUnfolderBase]: 8093/12661 cut-off events. [2024-06-28 01:34:40,211 INFO L125 PetriNetUnfolderBase]: For 569133/569143 co-relation queries the response was YES. [2024-06-28 01:34:40,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88372 conditions, 12661 events. 8093/12661 cut-off events. For 569133/569143 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 82348 event pairs, 2041 based on Foata normal form. 9/12439 useless extension candidates. Maximal degree in co-relation 88262. Up to 9944 conditions per place. [2024-06-28 01:34:40,371 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 283 selfloop transitions, 164 changer transitions 0/459 dead transitions. [2024-06-28 01:34:40,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 459 transitions, 7144 flow [2024-06-28 01:34:40,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:40,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:40,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 242 transitions. [2024-06-28 01:34:40,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377777777777778 [2024-06-28 01:34:40,372 INFO L175 Difference]: Start difference. First operand has 234 places, 390 transitions, 5688 flow. Second operand 9 states and 242 transitions. [2024-06-28 01:34:40,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 459 transitions, 7144 flow [2024-06-28 01:34:41,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 459 transitions, 6791 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:41,433 INFO L231 Difference]: Finished difference. Result has 237 places, 393 transitions, 5726 flow [2024-06-28 01:34:41,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=5335, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5726, PETRI_PLACES=237, PETRI_TRANSITIONS=393} [2024-06-28 01:34:41,434 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 181 predicate places. [2024-06-28 01:34:41,434 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 393 transitions, 5726 flow [2024-06-28 01:34:41,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:41,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:41,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:41,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:34:41,434 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:41,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:41,435 INFO L85 PathProgramCache]: Analyzing trace with hash -805538466, now seen corresponding path program 4 times [2024-06-28 01:34:41,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:41,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378473311] [2024-06-28 01:34:41,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:41,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:42,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:42,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:42,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378473311] [2024-06-28 01:34:42,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378473311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:42,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:42,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:42,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429547537] [2024-06-28 01:34:42,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:42,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:42,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:42,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:42,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:42,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:34:42,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 393 transitions, 5726 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:42,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:42,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:34:42,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:45,180 INFO L124 PetriNetUnfolderBase]: 8166/12817 cut-off events. [2024-06-28 01:34:45,180 INFO L125 PetriNetUnfolderBase]: For 589502/589512 co-relation queries the response was YES. [2024-06-28 01:34:45,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89857 conditions, 12817 events. 8166/12817 cut-off events. For 589502/589512 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 83852 event pairs, 2124 based on Foata normal form. 9/12576 useless extension candidates. Maximal degree in co-relation 89746. Up to 10114 conditions per place. [2024-06-28 01:34:45,347 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 317 selfloop transitions, 148 changer transitions 0/477 dead transitions. [2024-06-28 01:34:45,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 477 transitions, 7147 flow [2024-06-28 01:34:45,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:45,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:45,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 284 transitions. [2024-06-28 01:34:45,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163636363636364 [2024-06-28 01:34:45,349 INFO L175 Difference]: Start difference. First operand has 237 places, 393 transitions, 5726 flow. Second operand 11 states and 284 transitions. [2024-06-28 01:34:45,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 477 transitions, 7147 flow [2024-06-28 01:34:46,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 477 transitions, 6850 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:46,411 INFO L231 Difference]: Finished difference. Result has 242 places, 402 transitions, 5894 flow [2024-06-28 01:34:46,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=5474, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5894, PETRI_PLACES=242, PETRI_TRANSITIONS=402} [2024-06-28 01:34:46,412 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 186 predicate places. [2024-06-28 01:34:46,412 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 402 transitions, 5894 flow [2024-06-28 01:34:46,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:46,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:46,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:46,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:34:46,413 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:46,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:46,413 INFO L85 PathProgramCache]: Analyzing trace with hash -805538621, now seen corresponding path program 5 times [2024-06-28 01:34:46,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:46,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514742607] [2024-06-28 01:34:46,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:46,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:47,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:47,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:47,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514742607] [2024-06-28 01:34:47,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514742607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:47,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:47,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:47,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798731176] [2024-06-28 01:34:47,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:47,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:47,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:47,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:47,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:47,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:34:47,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 402 transitions, 5894 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:47,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:47,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:34:47,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:49,957 INFO L124 PetriNetUnfolderBase]: 8171/12837 cut-off events. [2024-06-28 01:34:49,958 INFO L125 PetriNetUnfolderBase]: For 607180/607190 co-relation queries the response was YES. [2024-06-28 01:34:50,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90150 conditions, 12837 events. 8171/12837 cut-off events. For 607180/607190 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 84177 event pairs, 2212 based on Foata normal form. 12/12599 useless extension candidates. Maximal degree in co-relation 90038. Up to 10692 conditions per place. [2024-06-28 01:34:50,141 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 296 selfloop transitions, 155 changer transitions 0/463 dead transitions. [2024-06-28 01:34:50,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 463 transitions, 7151 flow [2024-06-28 01:34:50,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:50,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:50,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-28 01:34:50,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5155555555555555 [2024-06-28 01:34:50,142 INFO L175 Difference]: Start difference. First operand has 242 places, 402 transitions, 5894 flow. Second operand 9 states and 232 transitions. [2024-06-28 01:34:50,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 463 transitions, 7151 flow [2024-06-28 01:34:51,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 463 transitions, 6842 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:51,139 INFO L231 Difference]: Finished difference. Result has 245 places, 407 transitions, 6009 flow [2024-06-28 01:34:51,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=5585, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6009, PETRI_PLACES=245, PETRI_TRANSITIONS=407} [2024-06-28 01:34:51,140 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 189 predicate places. [2024-06-28 01:34:51,140 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 407 transitions, 6009 flow [2024-06-28 01:34:51,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:51,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:51,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:51,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:34:51,140 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:51,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:51,141 INFO L85 PathProgramCache]: Analyzing trace with hash -930706957, now seen corresponding path program 6 times [2024-06-28 01:34:51,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:51,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772344100] [2024-06-28 01:34:51,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:51,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:52,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:52,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:52,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772344100] [2024-06-28 01:34:52,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772344100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:52,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:52,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:52,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814042548] [2024-06-28 01:34:52,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:52,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:52,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:52,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:52,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:52,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:34:52,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 407 transitions, 6009 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:52,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:52,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:34:52,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:54,912 INFO L124 PetriNetUnfolderBase]: 8208/12920 cut-off events. [2024-06-28 01:34:54,912 INFO L125 PetriNetUnfolderBase]: For 627534/627544 co-relation queries the response was YES. [2024-06-28 01:34:55,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90783 conditions, 12920 events. 8208/12920 cut-off events. For 627534/627544 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 85032 event pairs, 1868 based on Foata normal form. 12/12666 useless extension candidates. Maximal degree in co-relation 90669. Up to 10567 conditions per place. [2024-06-28 01:34:55,095 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 321 selfloop transitions, 138 changer transitions 0/471 dead transitions. [2024-06-28 01:34:55,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 471 transitions, 7422 flow [2024-06-28 01:34:55,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:55,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:55,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 242 transitions. [2024-06-28 01:34:55,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377777777777778 [2024-06-28 01:34:55,096 INFO L175 Difference]: Start difference. First operand has 245 places, 407 transitions, 6009 flow. Second operand 9 states and 242 transitions. [2024-06-28 01:34:55,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 471 transitions, 7422 flow [2024-06-28 01:34:56,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 471 transitions, 7153 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-28 01:34:56,017 INFO L231 Difference]: Finished difference. Result has 249 places, 409 transitions, 6051 flow [2024-06-28 01:34:56,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=5740, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6051, PETRI_PLACES=249, PETRI_TRANSITIONS=409} [2024-06-28 01:34:56,017 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 193 predicate places. [2024-06-28 01:34:56,017 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 409 transitions, 6051 flow [2024-06-28 01:34:56,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:56,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:56,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:56,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:34:56,018 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:56,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:56,018 INFO L85 PathProgramCache]: Analyzing trace with hash -930703082, now seen corresponding path program 5 times [2024-06-28 01:34:56,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:56,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917404448] [2024-06-28 01:34:56,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:56,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:56,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:57,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:57,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:57,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917404448] [2024-06-28 01:34:57,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917404448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:57,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:57,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:57,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320210118] [2024-06-28 01:34:57,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:57,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:57,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:57,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:57,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:57,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:34:57,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 409 transitions, 6051 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:57,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:57,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:34:57,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:59,773 INFO L124 PetriNetUnfolderBase]: 8280/13004 cut-off events. [2024-06-28 01:34:59,773 INFO L125 PetriNetUnfolderBase]: For 654602/654612 co-relation queries the response was YES. [2024-06-28 01:34:59,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92163 conditions, 13004 events. 8280/13004 cut-off events. For 654602/654612 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 85382 event pairs, 2048 based on Foata normal form. 9/12749 useless extension candidates. Maximal degree in co-relation 92048. Up to 10105 conditions per place. [2024-06-28 01:34:59,946 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 332 selfloop transitions, 155 changer transitions 0/499 dead transitions. [2024-06-28 01:34:59,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 499 transitions, 7731 flow [2024-06-28 01:34:59,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:59,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:59,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 297 transitions. [2024-06-28 01:34:59,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-06-28 01:34:59,948 INFO L175 Difference]: Start difference. First operand has 249 places, 409 transitions, 6051 flow. Second operand 11 states and 297 transitions. [2024-06-28 01:34:59,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 499 transitions, 7731 flow [2024-06-28 01:35:00,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 499 transitions, 7318 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 01:35:00,771 INFO L231 Difference]: Finished difference. Result has 252 places, 415 transitions, 6083 flow [2024-06-28 01:35:00,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=5638, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6083, PETRI_PLACES=252, PETRI_TRANSITIONS=415} [2024-06-28 01:35:00,771 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 196 predicate places. [2024-06-28 01:35:00,771 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 415 transitions, 6083 flow [2024-06-28 01:35:00,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:00,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:00,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:00,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:35:00,772 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:00,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:00,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1526479647, now seen corresponding path program 7 times [2024-06-28 01:35:00,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:00,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891673474] [2024-06-28 01:35:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:00,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:01,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:01,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:01,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891673474] [2024-06-28 01:35:01,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891673474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:01,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:01,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:01,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986820552] [2024-06-28 01:35:01,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:01,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:01,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:01,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:01,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:02,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:35:02,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 415 transitions, 6083 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:02,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:02,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:35:02,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:04,438 INFO L124 PetriNetUnfolderBase]: 8326/13132 cut-off events. [2024-06-28 01:35:04,438 INFO L125 PetriNetUnfolderBase]: For 675787/675797 co-relation queries the response was YES. [2024-06-28 01:35:04,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92339 conditions, 13132 events. 8326/13132 cut-off events. For 675787/675797 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 86779 event pairs, 2271 based on Foata normal form. 12/12877 useless extension candidates. Maximal degree in co-relation 92224. Up to 10885 conditions per place. [2024-06-28 01:35:04,636 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 338 selfloop transitions, 137 changer transitions 0/487 dead transitions. [2024-06-28 01:35:04,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 487 transitions, 7383 flow [2024-06-28 01:35:04,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:35:04,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:35:04,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 262 transitions. [2024-06-28 01:35:04,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524 [2024-06-28 01:35:04,637 INFO L175 Difference]: Start difference. First operand has 252 places, 415 transitions, 6083 flow. Second operand 10 states and 262 transitions. [2024-06-28 01:35:04,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 487 transitions, 7383 flow [2024-06-28 01:35:05,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 487 transitions, 7155 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 01:35:05,825 INFO L231 Difference]: Finished difference. Result has 255 places, 417 transitions, 6164 flow [2024-06-28 01:35:05,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=5855, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6164, PETRI_PLACES=255, PETRI_TRANSITIONS=417} [2024-06-28 01:35:05,825 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 199 predicate places. [2024-06-28 01:35:05,825 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 417 transitions, 6164 flow [2024-06-28 01:35:05,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:05,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:05,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:05,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:35:05,826 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:05,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:05,826 INFO L85 PathProgramCache]: Analyzing trace with hash -925196707, now seen corresponding path program 8 times [2024-06-28 01:35:05,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:05,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205536067] [2024-06-28 01:35:05,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:05,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:06,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:06,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:06,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205536067] [2024-06-28 01:35:06,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205536067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:06,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:06,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:06,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011282842] [2024-06-28 01:35:06,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:06,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:06,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:06,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:06,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:07,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:35:07,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 417 transitions, 6164 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:07,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:07,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:35:07,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:09,474 INFO L124 PetriNetUnfolderBase]: 8391/13190 cut-off events. [2024-06-28 01:35:09,474 INFO L125 PetriNetUnfolderBase]: For 694634/694644 co-relation queries the response was YES. [2024-06-28 01:35:09,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93712 conditions, 13190 events. 8391/13190 cut-off events. For 694634/694644 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 86808 event pairs, 2267 based on Foata normal form. 12/12936 useless extension candidates. Maximal degree in co-relation 93595. Up to 11064 conditions per place. [2024-06-28 01:35:09,678 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 324 selfloop transitions, 154 changer transitions 0/490 dead transitions. [2024-06-28 01:35:09,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 490 transitions, 7668 flow [2024-06-28 01:35:09,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:09,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:09,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-28 01:35:09,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-06-28 01:35:09,679 INFO L175 Difference]: Start difference. First operand has 255 places, 417 transitions, 6164 flow. Second operand 9 states and 230 transitions. [2024-06-28 01:35:09,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 490 transitions, 7668 flow [2024-06-28 01:35:10,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 490 transitions, 7381 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 01:35:10,486 INFO L231 Difference]: Finished difference. Result has 258 places, 431 transitions, 6541 flow [2024-06-28 01:35:10,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=5877, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6541, PETRI_PLACES=258, PETRI_TRANSITIONS=431} [2024-06-28 01:35:10,487 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 202 predicate places. [2024-06-28 01:35:10,487 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 431 transitions, 6541 flow [2024-06-28 01:35:10,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:10,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:10,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:10,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:35:10,488 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:10,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:10,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1520765572, now seen corresponding path program 6 times [2024-06-28 01:35:10,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:10,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631479762] [2024-06-28 01:35:10,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:10,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:11,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:11,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:11,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631479762] [2024-06-28 01:35:11,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631479762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:11,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:11,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:11,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616479816] [2024-06-28 01:35:11,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:11,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:11,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:11,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:11,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:11,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:35:11,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 431 transitions, 6541 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:11,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:11,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:35:11,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:14,209 INFO L124 PetriNetUnfolderBase]: 8437/13270 cut-off events. [2024-06-28 01:35:14,209 INFO L125 PetriNetUnfolderBase]: For 724623/724633 co-relation queries the response was YES. [2024-06-28 01:35:14,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95733 conditions, 13270 events. 8437/13270 cut-off events. For 724623/724633 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 87579 event pairs, 2192 based on Foata normal form. 9/13012 useless extension candidates. Maximal degree in co-relation 95613. Up to 10664 conditions per place. [2024-06-28 01:35:14,395 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 335 selfloop transitions, 144 changer transitions 0/491 dead transitions. [2024-06-28 01:35:14,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 491 transitions, 7826 flow [2024-06-28 01:35:14,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:14,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:14,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-28 01:35:14,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244444444444445 [2024-06-28 01:35:14,396 INFO L175 Difference]: Start difference. First operand has 258 places, 431 transitions, 6541 flow. Second operand 9 states and 236 transitions. [2024-06-28 01:35:14,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 491 transitions, 7826 flow [2024-06-28 01:35:15,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 491 transitions, 7572 flow, removed 58 selfloop flow, removed 3 redundant places. [2024-06-28 01:35:15,806 INFO L231 Difference]: Finished difference. Result has 264 places, 434 transitions, 6655 flow [2024-06-28 01:35:15,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=6287, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6655, PETRI_PLACES=264, PETRI_TRANSITIONS=434} [2024-06-28 01:35:15,806 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 208 predicate places. [2024-06-28 01:35:15,806 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 434 transitions, 6655 flow [2024-06-28 01:35:15,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:15,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:15,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:15,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:35:15,807 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:15,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:15,807 INFO L85 PathProgramCache]: Analyzing trace with hash -925190972, now seen corresponding path program 7 times [2024-06-28 01:35:15,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:15,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239682407] [2024-06-28 01:35:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:15,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:16,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:16,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:16,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239682407] [2024-06-28 01:35:16,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239682407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:16,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:16,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:16,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718022478] [2024-06-28 01:35:16,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:16,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:16,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:16,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:16,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:17,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:35:17,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 434 transitions, 6655 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:17,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:17,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:35:17,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:19,697 INFO L124 PetriNetUnfolderBase]: 8469/13317 cut-off events. [2024-06-28 01:35:19,697 INFO L125 PetriNetUnfolderBase]: For 753885/753895 co-relation queries the response was YES. [2024-06-28 01:35:19,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97017 conditions, 13317 events. 8469/13317 cut-off events. For 753885/753895 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 88080 event pairs, 2076 based on Foata normal form. 9/13053 useless extension candidates. Maximal degree in co-relation 96896. Up to 10682 conditions per place. [2024-06-28 01:35:19,866 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 351 selfloop transitions, 135 changer transitions 0/498 dead transitions. [2024-06-28 01:35:19,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 498 transitions, 7987 flow [2024-06-28 01:35:19,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:19,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:19,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-28 01:35:19,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288888888888889 [2024-06-28 01:35:19,867 INFO L175 Difference]: Start difference. First operand has 264 places, 434 transitions, 6655 flow. Second operand 9 states and 238 transitions. [2024-06-28 01:35:19,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 498 transitions, 7987 flow [2024-06-28 01:35:20,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 498 transitions, 7655 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 01:35:20,744 INFO L231 Difference]: Finished difference. Result has 266 places, 437 transitions, 6679 flow [2024-06-28 01:35:20,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=6323, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6679, PETRI_PLACES=266, PETRI_TRANSITIONS=437} [2024-06-28 01:35:20,747 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 210 predicate places. [2024-06-28 01:35:20,747 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 437 transitions, 6679 flow [2024-06-28 01:35:20,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:20,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:20,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:20,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:35:20,747 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:20,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:20,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1520972962, now seen corresponding path program 8 times [2024-06-28 01:35:20,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:20,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939795773] [2024-06-28 01:35:20,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:20,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:21,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:21,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939795773] [2024-06-28 01:35:21,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939795773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:21,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:21,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:21,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123730714] [2024-06-28 01:35:21,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:21,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:21,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:21,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:21,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:21,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:35:21,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 437 transitions, 6679 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:21,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:21,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:35:21,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:24,714 INFO L124 PetriNetUnfolderBase]: 8578/13401 cut-off events. [2024-06-28 01:35:24,715 INFO L125 PetriNetUnfolderBase]: For 781717/781727 co-relation queries the response was YES. [2024-06-28 01:35:24,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98704 conditions, 13401 events. 8578/13401 cut-off events. For 781717/781727 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 87960 event pairs, 1925 based on Foata normal form. 9/13173 useless extension candidates. Maximal degree in co-relation 98582. Up to 10531 conditions per place. [2024-06-28 01:35:24,890 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 322 selfloop transitions, 186 changer transitions 0/520 dead transitions. [2024-06-28 01:35:24,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 520 transitions, 8595 flow [2024-06-28 01:35:24,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:24,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:24,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-28 01:35:24,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-06-28 01:35:24,891 INFO L175 Difference]: Start difference. First operand has 266 places, 437 transitions, 6679 flow. Second operand 9 states and 243 transitions. [2024-06-28 01:35:24,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 520 transitions, 8595 flow [2024-06-28 01:35:26,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 520 transitions, 8275 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 01:35:26,162 INFO L231 Difference]: Finished difference. Result has 269 places, 453 transitions, 7165 flow [2024-06-28 01:35:26,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=6359, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7165, PETRI_PLACES=269, PETRI_TRANSITIONS=453} [2024-06-28 01:35:26,163 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 213 predicate places. [2024-06-28 01:35:26,163 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 453 transitions, 7165 flow [2024-06-28 01:35:26,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:26,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:26,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:26,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:35:26,163 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:26,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:26,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1320911960, now seen corresponding path program 1 times [2024-06-28 01:35:26,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:26,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835471002] [2024-06-28 01:35:26,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:26,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:26,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:26,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:26,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835471002] [2024-06-28 01:35:26,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835471002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:26,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:26,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:35:26,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57533198] [2024-06-28 01:35:26,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:26,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:35:26,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:26,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:35:26,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:35:27,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:35:27,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 453 transitions, 7165 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:27,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:27,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:35:27,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:29,727 INFO L124 PetriNetUnfolderBase]: 8782/13966 cut-off events. [2024-06-28 01:35:29,728 INFO L125 PetriNetUnfolderBase]: For 818583/818645 co-relation queries the response was YES. [2024-06-28 01:35:29,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101401 conditions, 13966 events. 8782/13966 cut-off events. For 818583/818645 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 93723 event pairs, 2500 based on Foata normal form. 62/13720 useless extension candidates. Maximal degree in co-relation 101277. Up to 11603 conditions per place. [2024-06-28 01:35:30,254 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 372 selfloop transitions, 75 changer transitions 0/513 dead transitions. [2024-06-28 01:35:30,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 513 transitions, 8709 flow [2024-06-28 01:35:30,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:35:30,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:35:30,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 01:35:30,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257142857142857 [2024-06-28 01:35:30,255 INFO L175 Difference]: Start difference. First operand has 269 places, 453 transitions, 7165 flow. Second operand 7 states and 184 transitions. [2024-06-28 01:35:30,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 513 transitions, 8709 flow [2024-06-28 01:35:31,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 513 transitions, 8474 flow, removed 105 selfloop flow, removed 2 redundant places. [2024-06-28 01:35:31,447 INFO L231 Difference]: Finished difference. Result has 276 places, 472 transitions, 7394 flow [2024-06-28 01:35:31,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=6934, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7394, PETRI_PLACES=276, PETRI_TRANSITIONS=472} [2024-06-28 01:35:31,448 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 220 predicate places. [2024-06-28 01:35:31,448 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 472 transitions, 7394 flow [2024-06-28 01:35:31,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:31,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:31,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:31,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:35:31,449 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:31,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:31,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1320899436, now seen corresponding path program 1 times [2024-06-28 01:35:31,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:31,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821061203] [2024-06-28 01:35:31,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:31,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:32,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:32,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:32,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821061203] [2024-06-28 01:35:32,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821061203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:32,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:32,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:35:32,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118491110] [2024-06-28 01:35:32,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:32,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:35:32,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:32,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:35:32,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:35:32,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:35:32,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 472 transitions, 7394 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:32,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:32,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:35:32,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:35,396 INFO L124 PetriNetUnfolderBase]: 9309/14598 cut-off events. [2024-06-28 01:35:35,396 INFO L125 PetriNetUnfolderBase]: For 841800/841852 co-relation queries the response was YES. [2024-06-28 01:35:35,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105764 conditions, 14598 events. 9309/14598 cut-off events. For 841800/841852 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 96272 event pairs, 2826 based on Foata normal form. 53/14347 useless extension candidates. Maximal degree in co-relation 105636. Up to 12848 conditions per place. [2024-06-28 01:35:35,601 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 396 selfloop transitions, 53 changer transitions 0/513 dead transitions. [2024-06-28 01:35:35,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 513 transitions, 8700 flow [2024-06-28 01:35:35,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:35:35,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:35:35,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:35:35,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47714285714285715 [2024-06-28 01:35:35,602 INFO L175 Difference]: Start difference. First operand has 276 places, 472 transitions, 7394 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:35:35,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 513 transitions, 8700 flow [2024-06-28 01:35:36,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 513 transitions, 8634 flow, removed 32 selfloop flow, removed 1 redundant places. [2024-06-28 01:35:36,869 INFO L231 Difference]: Finished difference. Result has 283 places, 482 transitions, 7608 flow [2024-06-28 01:35:36,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=7328, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7608, PETRI_PLACES=283, PETRI_TRANSITIONS=482} [2024-06-28 01:35:36,870 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 227 predicate places. [2024-06-28 01:35:36,870 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 482 transitions, 7608 flow [2024-06-28 01:35:36,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:36,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:36,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:36,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:35:36,871 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:36,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:36,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1320899870, now seen corresponding path program 2 times [2024-06-28 01:35:36,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:36,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077104261] [2024-06-28 01:35:36,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:36,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:37,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:37,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:37,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077104261] [2024-06-28 01:35:37,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077104261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:37,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:37,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:35:37,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320260068] [2024-06-28 01:35:37,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:37,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:35:37,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:37,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:35:37,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:35:37,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:35:37,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 482 transitions, 7608 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:37,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:37,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:35:37,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:40,944 INFO L124 PetriNetUnfolderBase]: 8937/14267 cut-off events. [2024-06-28 01:35:40,944 INFO L125 PetriNetUnfolderBase]: For 883620/883698 co-relation queries the response was YES. [2024-06-28 01:35:41,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106511 conditions, 14267 events. 8937/14267 cut-off events. For 883620/883698 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 96635 event pairs, 2569 based on Foata normal form. 58/13984 useless extension candidates. Maximal degree in co-relation 106379. Up to 11762 conditions per place. [2024-06-28 01:35:41,138 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 376 selfloop transitions, 80 changer transitions 0/525 dead transitions. [2024-06-28 01:35:41,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 525 transitions, 9060 flow [2024-06-28 01:35:41,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:35:41,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:35:41,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 01:35:41,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085714285714286 [2024-06-28 01:35:41,139 INFO L175 Difference]: Start difference. First operand has 283 places, 482 transitions, 7608 flow. Second operand 7 states and 178 transitions. [2024-06-28 01:35:41,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 525 transitions, 9060 flow [2024-06-28 01:35:42,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 525 transitions, 8987 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-06-28 01:35:42,554 INFO L231 Difference]: Finished difference. Result has 289 places, 490 transitions, 7857 flow [2024-06-28 01:35:42,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=7535, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7857, PETRI_PLACES=289, PETRI_TRANSITIONS=490} [2024-06-28 01:35:42,555 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 233 predicate places. [2024-06-28 01:35:42,555 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 490 transitions, 7857 flow [2024-06-28 01:35:42,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:42,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:42,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:42,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:35:42,556 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:42,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:42,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1671982072, now seen corresponding path program 9 times [2024-06-28 01:35:42,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:42,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588446342] [2024-06-28 01:35:42,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:42,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:43,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:43,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:43,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588446342] [2024-06-28 01:35:43,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588446342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:43,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:43,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:43,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815134076] [2024-06-28 01:35:43,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:43,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:43,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:43,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:43,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:43,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:35:43,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 490 transitions, 7857 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:43,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:43,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:35:43,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:46,901 INFO L124 PetriNetUnfolderBase]: 8760/13712 cut-off events. [2024-06-28 01:35:46,901 INFO L125 PetriNetUnfolderBase]: For 905423/905445 co-relation queries the response was YES. [2024-06-28 01:35:47,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106637 conditions, 13712 events. 8760/13712 cut-off events. For 905423/905445 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 90579 event pairs, 2419 based on Foata normal form. 8/13459 useless extension candidates. Maximal degree in co-relation 106501. Up to 12142 conditions per place. [2024-06-28 01:35:47,076 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 496 selfloop transitions, 29 changer transitions 0/540 dead transitions. [2024-06-28 01:35:47,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 540 transitions, 9195 flow [2024-06-28 01:35:47,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:47,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:47,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-28 01:35:47,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49333333333333335 [2024-06-28 01:35:47,078 INFO L175 Difference]: Start difference. First operand has 289 places, 490 transitions, 7857 flow. Second operand 9 states and 222 transitions. [2024-06-28 01:35:47,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 540 transitions, 9195 flow [2024-06-28 01:35:48,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 540 transitions, 9067 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-28 01:35:48,381 INFO L231 Difference]: Finished difference. Result has 295 places, 493 transitions, 7885 flow [2024-06-28 01:35:48,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=7729, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7885, PETRI_PLACES=295, PETRI_TRANSITIONS=493} [2024-06-28 01:35:48,381 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 239 predicate places. [2024-06-28 01:35:48,381 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 493 transitions, 7885 flow [2024-06-28 01:35:48,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:48,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:48,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:48,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:35:48,382 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:48,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:48,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1682435768, now seen corresponding path program 1 times [2024-06-28 01:35:48,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:48,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408746314] [2024-06-28 01:35:48,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:48,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:49,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:49,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:49,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408746314] [2024-06-28 01:35:49,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408746314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:49,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:49,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:49,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904130759] [2024-06-28 01:35:49,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:49,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:49,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:49,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:49,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:49,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:35:49,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 493 transitions, 7885 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:49,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:49,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:35:49,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:53,001 INFO L124 PetriNetUnfolderBase]: 9452/14678 cut-off events. [2024-06-28 01:35:53,002 INFO L125 PetriNetUnfolderBase]: For 941915/941931 co-relation queries the response was YES. [2024-06-28 01:35:53,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112079 conditions, 14678 events. 9452/14678 cut-off events. For 941915/941931 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 95487 event pairs, 2668 based on Foata normal form. 2/14387 useless extension candidates. Maximal degree in co-relation 111942. Up to 13158 conditions per place. [2024-06-28 01:35:53,194 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 501 selfloop transitions, 32 changer transitions 0/546 dead transitions. [2024-06-28 01:35:53,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 546 transitions, 9274 flow [2024-06-28 01:35:53,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:53,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:53,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-28 01:35:53,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 01:35:53,195 INFO L175 Difference]: Start difference. First operand has 295 places, 493 transitions, 7885 flow. Second operand 9 states and 210 transitions. [2024-06-28 01:35:53,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 546 transitions, 9274 flow [2024-06-28 01:35:54,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 546 transitions, 9146 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 01:35:54,665 INFO L231 Difference]: Finished difference. Result has 299 places, 505 transitions, 8039 flow [2024-06-28 01:35:54,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=7765, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8039, PETRI_PLACES=299, PETRI_TRANSITIONS=505} [2024-06-28 01:35:54,665 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 243 predicate places. [2024-06-28 01:35:54,665 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 505 transitions, 8039 flow [2024-06-28 01:35:54,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:54,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:54,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:54,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:35:54,666 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:54,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:54,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1581000696, now seen corresponding path program 10 times [2024-06-28 01:35:54,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:54,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994119029] [2024-06-28 01:35:54,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:54,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:55,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:55,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:55,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994119029] [2024-06-28 01:35:55,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994119029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:55,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:55,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:55,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136017848] [2024-06-28 01:35:55,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:55,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:55,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:55,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:55,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:56,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:35:56,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 505 transitions, 8039 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:56,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:56,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:35:56,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:59,137 INFO L124 PetriNetUnfolderBase]: 8912/13958 cut-off events. [2024-06-28 01:35:59,137 INFO L125 PetriNetUnfolderBase]: For 961264/961286 co-relation queries the response was YES. [2024-06-28 01:35:59,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109056 conditions, 13958 events. 8912/13958 cut-off events. For 961264/961286 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 92603 event pairs, 2264 based on Foata normal form. 8/13695 useless extension candidates. Maximal degree in co-relation 108916. Up to 12119 conditions per place. [2024-06-28 01:35:59,342 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 494 selfloop transitions, 54 changer transitions 0/564 dead transitions. [2024-06-28 01:35:59,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 564 transitions, 9509 flow [2024-06-28 01:35:59,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:59,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:59,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-28 01:35:59,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044444444444445 [2024-06-28 01:35:59,343 INFO L175 Difference]: Start difference. First operand has 299 places, 505 transitions, 8039 flow. Second operand 9 states and 227 transitions. [2024-06-28 01:35:59,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 564 transitions, 9509 flow [2024-06-28 01:36:00,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 564 transitions, 9406 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 01:36:00,902 INFO L231 Difference]: Finished difference. Result has 303 places, 508 transitions, 8148 flow [2024-06-28 01:36:00,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=7936, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8148, PETRI_PLACES=303, PETRI_TRANSITIONS=508} [2024-06-28 01:36:00,903 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 247 predicate places. [2024-06-28 01:36:00,903 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 508 transitions, 8148 flow [2024-06-28 01:36:00,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:00,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:00,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:00,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:36:00,903 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:00,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:00,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1387568542, now seen corresponding path program 11 times [2024-06-28 01:36:00,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:00,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212680310] [2024-06-28 01:36:00,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:00,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:02,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:02,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:02,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212680310] [2024-06-28 01:36:02,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212680310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:02,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:02,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:36:02,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751905062] [2024-06-28 01:36:02,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:02,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:36:02,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:02,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:36:02,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:36:02,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:36:02,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 508 transitions, 8148 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:02,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:02,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:36:02,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:05,331 INFO L124 PetriNetUnfolderBase]: 8983/14059 cut-off events. [2024-06-28 01:36:05,332 INFO L125 PetriNetUnfolderBase]: For 991172/991194 co-relation queries the response was YES. [2024-06-28 01:36:05,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110737 conditions, 14059 events. 8983/14059 cut-off events. For 991172/991194 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 93270 event pairs, 2183 based on Foata normal form. 8/13797 useless extension candidates. Maximal degree in co-relation 110596. Up to 11906 conditions per place. [2024-06-28 01:36:05,522 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 479 selfloop transitions, 93 changer transitions 0/588 dead transitions. [2024-06-28 01:36:05,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 588 transitions, 10490 flow [2024-06-28 01:36:05,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:36:05,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:36:05,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-28 01:36:05,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-06-28 01:36:05,523 INFO L175 Difference]: Start difference. First operand has 303 places, 508 transitions, 8148 flow. Second operand 9 states and 235 transitions. [2024-06-28 01:36:05,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 588 transitions, 10490 flow [2024-06-28 01:36:06,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 588 transitions, 10312 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 01:36:06,944 INFO L231 Difference]: Finished difference. Result has 307 places, 524 transitions, 8634 flow [2024-06-28 01:36:06,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=7970, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8634, PETRI_PLACES=307, PETRI_TRANSITIONS=524} [2024-06-28 01:36:06,944 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 251 predicate places. [2024-06-28 01:36:06,944 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 524 transitions, 8634 flow [2024-06-28 01:36:06,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:06,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:06,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:06,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:36:06,945 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:06,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:06,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1387568387, now seen corresponding path program 9 times [2024-06-28 01:36:06,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:06,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96814374] [2024-06-28 01:36:06,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:06,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:08,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:08,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96814374] [2024-06-28 01:36:08,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96814374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:08,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:08,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:36:08,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449997829] [2024-06-28 01:36:08,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:08,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:36:08,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:08,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:36:08,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:36:08,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:36:08,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 524 transitions, 8634 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:08,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:08,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:36:08,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand