./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe019_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe019_rmo.opt.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/safe019_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe019_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 04:20:55,099 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 04:20:55,193 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 04:20:55,202 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 04:20:55,202 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 04:20:55,230 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 04:20:55,231 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 04:20:55,231 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 04:20:55,231 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 04:20:55,232 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 04:20:55,232 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 04:20:55,232 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 04:20:55,232 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 04:20:55,233 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 04:20:55,233 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 04:20:55,233 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 04:20:55,233 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 04:20:55,234 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 04:20:55,234 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 04:20:55,234 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 04:20:55,234 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 04:20:55,235 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 04:20:55,235 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 04:20:55,236 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 04:20:55,236 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 04:20:55,236 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 04:20:55,236 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 04:20:55,236 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 04:20:55,236 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 04:20:55,237 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 04:20:55,237 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 04:20:55,237 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 04:20:55,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:20:55,237 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 04:20:55,237 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 04:20:55,238 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 04:20:55,238 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 04:20:55,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 04:20:55,238 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 04:20:55,238 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 04:20:55,238 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 04:20:55,239 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 04:20:55,239 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 04:20:55,239 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 04:20:55,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 04:20:55,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 04:20:55,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 04:20:55,430 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 04:20:55,431 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 04:20:55,432 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe019_rmo.opt.yml/witness.yml [2024-06-28 04:20:55,732 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 04:20:55,732 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 04:20:55,733 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_rmo.opt.i [2024-06-28 04:20:56,768 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 04:20:56,974 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 04:20:56,975 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_rmo.opt.i [2024-06-28 04:20:56,985 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a358f715/bc31a7d2ab56473389e03b4321918b41/FLAG9e5ef7650 [2024-06-28 04:20:56,995 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a358f715/bc31a7d2ab56473389e03b4321918b41 [2024-06-28 04:20:56,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 04:20:56,996 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 04:20:57,008 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 04:20:57,008 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 04:20:57,015 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 04:20:57,016 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:20:55" (1/2) ... [2024-06-28 04:20:57,017 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56132998 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:20:57, skipping insertion in model container [2024-06-28 04:20:57,017 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:20:55" (1/2) ... [2024-06-28 04:20:57,018 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5b7512b7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:20:57, skipping insertion in model container [2024-06-28 04:20:57,018 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:20:56" (2/2) ... [2024-06-28 04:20:57,020 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56132998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:20:57, skipping insertion in model container [2024-06-28 04:20:57,021 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:20:56" (2/2) ... [2024-06-28 04:20:57,022 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 04:20:57,209 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 04:20:57,210 INFO L97 edCorrectnessWitness]: Location invariant before [L879-L879] ((((((((((((((((((((((((((((((((((((((((! multithreaded || x$w_buff1_used == (_Bool)0) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p2_EAX$flush_delayed == (_Bool)0) && __unbuffered_p2_EAX$mem_tmp == 0) && __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff0_thd4 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$r_buff1_thd4 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && x$w_buff0 == 0) && x$w_buff0_used == (_Bool)0) && x$w_buff1 == 0) && x$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1)))) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$w_buff0_used == (_Bool)0) [2024-06-28 04:20:57,210 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] ((((((((((((((((((((((((((((((((((((((((! multithreaded || x$w_buff1_used == (_Bool)0) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p2_EAX$flush_delayed == (_Bool)0) && __unbuffered_p2_EAX$mem_tmp == 0) && __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff0_thd4 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$r_buff1_thd4 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && x$w_buff0 == 0) && x$w_buff0_used == (_Bool)0) && x$w_buff1 == 0) && x$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1)))) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$w_buff0_used == (_Bool)0) [2024-06-28 04:20:57,210 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] ((((((((((((((((((((((((((((((((((((((((! multithreaded || x$w_buff1_used == (_Bool)0) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p2_EAX$flush_delayed == (_Bool)0) && __unbuffered_p2_EAX$mem_tmp == 0) && __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff0_thd4 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$r_buff1_thd4 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && x$w_buff0 == 0) && x$w_buff0_used == (_Bool)0) && x$w_buff1 == 0) && x$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1)))) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$w_buff0_used == (_Bool)0) [2024-06-28 04:20:57,210 INFO L97 edCorrectnessWitness]: Location invariant before [L878-L878] ((((((((((((((((((((((((((((((((((((((((! multithreaded || x$w_buff1_used == (_Bool)0) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p2_EAX$flush_delayed == (_Bool)0) && __unbuffered_p2_EAX$mem_tmp == 0) && __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff0_thd4 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$r_buff1_thd4 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && x$w_buff0 == 0) && x$w_buff0_used == (_Bool)0) && x$w_buff1 == 0) && x$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1)))) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$w_buff0_used == (_Bool)0) [2024-06-28 04:20:57,211 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 04:20:57,211 INFO L106 edCorrectnessWitness]: ghost_update [L872-L872] multithreaded = 1; [2024-06-28 04:20:57,241 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 04:20:57,561 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:20:57,570 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 04:20:57,741 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:20:57,778 INFO L206 MainTranslator]: Completed translation [2024-06-28 04:20:57,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:20:57 WrapperNode [2024-06-28 04:20:57,779 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 04:20:57,780 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 04:20:57,780 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 04:20:57,780 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 04:20:57,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:20:57" (1/1) ... [2024-06-28 04:20:57,812 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:20:57" (1/1) ... [2024-06-28 04:20:57,848 INFO L138 Inliner]: procedures = 176, calls = 103, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 245 [2024-06-28 04:20:57,849 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 04:20:57,849 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 04:20:57,849 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 04:20:57,853 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 04:20:57,861 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:20:57" (1/1) ... [2024-06-28 04:20:57,861 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:20:57" (1/1) ... [2024-06-28 04:20:57,866 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:20:57" (1/1) ... [2024-06-28 04:20:57,904 INFO L175 MemorySlicer]: Split 57 memory accesses to 2 slices as follows [2, 55]. 96 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 9 writes are split as follows [0, 9]. [2024-06-28 04:20:57,904 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:20:57" (1/1) ... [2024-06-28 04:20:57,905 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:20:57" (1/1) ... [2024-06-28 04:20:57,924 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:20:57" (1/1) ... [2024-06-28 04:20:57,935 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:20:57" (1/1) ... [2024-06-28 04:20:57,938 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:20:57" (1/1) ... [2024-06-28 04:20:57,939 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:20:57" (1/1) ... [2024-06-28 04:20:57,943 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 04:20:57,944 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 04:20:57,944 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 04:20:57,944 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 04:20:57,945 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:20:57" (1/1) ... [2024-06-28 04:20:57,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:20:57,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 04:20:57,977 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 04:20:57,984 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 04:20:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 04:20:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 04:20:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 04:20:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 04:20:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 04:20:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 04:20:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 04:20:58,023 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 04:20:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 04:20:58,023 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 04:20:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 04:20:58,023 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 04:20:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 04:20:58,024 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 04:20:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 04:20:58,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 04:20:58,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 04:20:58,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 04:20:58,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 04:20:58,028 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 04:20:58,182 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 04:20:58,184 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 04:20:58,716 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 04:20:58,716 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 04:20:59,125 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 04:20:59,125 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 04:20:59,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:20:59 BoogieIcfgContainer [2024-06-28 04:20:59,126 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 04:20:59,129 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 04:20:59,130 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 04:20:59,132 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 04:20:59,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:20:55" (1/4) ... [2024-06-28 04:20:59,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da1f90a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 04:20:59, skipping insertion in model container [2024-06-28 04:20:59,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 04:20:56" (2/4) ... [2024-06-28 04:20:59,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da1f90a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 04:20:59, skipping insertion in model container [2024-06-28 04:20:59,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:20:57" (3/4) ... [2024-06-28 04:20:59,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da1f90a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 04:20:59, skipping insertion in model container [2024-06-28 04:20:59,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:20:59" (4/4) ... [2024-06-28 04:20:59,134 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_rmo.opt.i [2024-06-28 04:20:59,148 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 04:20:59,148 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 04:20:59,148 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 04:20:59,207 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 04:20:59,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2024-06-28 04:20:59,265 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-06-28 04:20:59,265 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:20:59,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 04:20:59,268 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2024-06-28 04:20:59,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 42 transitions, 96 flow [2024-06-28 04:20:59,281 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 04:20:59,290 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;@4521bbd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 04:20:59,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 04:20:59,295 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 04:20:59,295 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 04:20:59,295 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:20:59,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:20:59,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 04:20:59,297 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:20:59,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:20:59,303 INFO L85 PathProgramCache]: Analyzing trace with hash 861340475, now seen corresponding path program 1 times [2024-06-28 04:20:59,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:20:59,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115914634] [2024-06-28 04:20:59,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:20:59,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:20:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:01,370 INFO 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 04:21:01,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:01,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115914634] [2024-06-28 04:21:01,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115914634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:01,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:01,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 04:21:01,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474253653] [2024-06-28 04:21:01,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:01,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 04:21:01,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:01,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 04:21:01,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 04:21:01,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 04:21:01,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:01,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:01,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 04:21:01,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:03,122 INFO L124 PetriNetUnfolderBase]: 6711/9234 cut-off events. [2024-06-28 04:21:03,122 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2024-06-28 04:21:03,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18754 conditions, 9234 events. 6711/9234 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 48019 event pairs, 4089 based on Foata normal form. 2/9094 useless extension candidates. Maximal degree in co-relation 18741. Up to 9183 conditions per place. [2024-06-28 04:21:03,173 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 48 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2024-06-28 04:21:03,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 247 flow [2024-06-28 04:21:03,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 04:21:03,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 04:21:03,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-06-28 04:21:03,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5769230769230769 [2024-06-28 04:21:03,185 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 96 flow. Second operand 3 states and 90 transitions. [2024-06-28 04:21:03,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 247 flow [2024-06-28 04:21:03,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 240 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 04:21:03,193 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 131 flow [2024-06-28 04:21:03,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-28 04:21:03,199 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2024-06-28 04:21:03,199 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 131 flow [2024-06-28 04:21:03,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:03,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:03,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:03,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 04:21:03,200 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:21:03,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:03,201 INFO L85 PathProgramCache]: Analyzing trace with hash 394780299, now seen corresponding path program 1 times [2024-06-28 04:21:03,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:03,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537374499] [2024-06-28 04:21:03,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:03,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:06,795 INFO 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 04:21:06,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:06,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537374499] [2024-06-28 04:21:06,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537374499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:06,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:06,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:21:06,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809483466] [2024-06-28 04:21:06,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:06,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:21:06,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:06,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:21:06,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:21:06,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:21:06,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 131 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:06,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:06,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:21:06,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:08,986 INFO L124 PetriNetUnfolderBase]: 8525/11670 cut-off events. [2024-06-28 04:21:08,986 INFO L125 PetriNetUnfolderBase]: For 2111/2111 co-relation queries the response was YES. [2024-06-28 04:21:08,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26842 conditions, 11670 events. 8525/11670 cut-off events. For 2111/2111 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 59451 event pairs, 4020 based on Foata normal form. 8/11674 useless extension candidates. Maximal degree in co-relation 26830. Up to 11534 conditions per place. [2024-06-28 04:21:09,041 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 59 selfloop transitions, 8 changer transitions 0/73 dead transitions. [2024-06-28 04:21:09,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 73 transitions, 333 flow [2024-06-28 04:21:09,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 04:21:09,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 04:21:09,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-06-28 04:21:09,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5336538461538461 [2024-06-28 04:21:09,044 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 131 flow. Second operand 4 states and 111 transitions. [2024-06-28 04:21:09,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 73 transitions, 333 flow [2024-06-28 04:21:09,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 73 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 04:21:09,049 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 166 flow [2024-06-28 04:21:09,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-28 04:21:09,051 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 1 predicate places. [2024-06-28 04:21:09,051 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 166 flow [2024-06-28 04:21:09,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:09,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:09,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:09,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 04:21:09,059 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:21:09,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:09,059 INFO L85 PathProgramCache]: Analyzing trace with hash 548091623, now seen corresponding path program 1 times [2024-06-28 04:21:09,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:09,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912374295] [2024-06-28 04:21:09,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:09,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:10,832 INFO 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 04:21:10,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:10,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912374295] [2024-06-28 04:21:10,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912374295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:10,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:10,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:21:10,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742698544] [2024-06-28 04:21:10,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:10,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:21:10,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:10,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:21:10,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:21:10,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:21:10,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:10,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:10,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:21:10,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:12,823 INFO L124 PetriNetUnfolderBase]: 6677/9196 cut-off events. [2024-06-28 04:21:12,823 INFO L125 PetriNetUnfolderBase]: For 4597/4597 co-relation queries the response was YES. [2024-06-28 04:21:12,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23250 conditions, 9196 events. 6677/9196 cut-off events. For 4597/4597 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 47880 event pairs, 3546 based on Foata normal form. 6/9200 useless extension candidates. Maximal degree in co-relation 23235. Up to 9124 conditions per place. [2024-06-28 04:21:12,870 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 63 selfloop transitions, 10 changer transitions 0/79 dead transitions. [2024-06-28 04:21:12,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 79 transitions, 404 flow [2024-06-28 04:21:12,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:21:12,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:21:12,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-28 04:21:12,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576923076923077 [2024-06-28 04:21:12,872 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 166 flow. Second operand 5 states and 119 transitions. [2024-06-28 04:21:12,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 79 transitions, 404 flow [2024-06-28 04:21:12,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 79 transitions, 380 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 04:21:12,876 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 228 flow [2024-06-28 04:21:12,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=148, 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=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2024-06-28 04:21:12,876 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 5 predicate places. [2024-06-28 04:21:12,877 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 228 flow [2024-06-28 04:21:12,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:12,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:12,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:12,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 04:21:12,878 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:21:12,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:12,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1455650018, now seen corresponding path program 1 times [2024-06-28 04:21:12,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:12,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120897829] [2024-06-28 04:21:12,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:12,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:16,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:21:16,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:16,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120897829] [2024-06-28 04:21:16,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120897829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:16,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:16,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:21:16,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391483002] [2024-06-28 04:21:16,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:16,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:21:16,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:16,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:21:16,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:21:16,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:21:16,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 228 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:16,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:16,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:21:16,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:17,946 INFO L124 PetriNetUnfolderBase]: 6662/9175 cut-off events. [2024-06-28 04:21:17,946 INFO L125 PetriNetUnfolderBase]: For 8251/8251 co-relation queries the response was YES. [2024-06-28 04:21:17,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25724 conditions, 9175 events. 6662/9175 cut-off events. For 8251/8251 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 47604 event pairs, 3407 based on Foata normal form. 6/9179 useless extension candidates. Maximal degree in co-relation 25706. Up to 9065 conditions per place. [2024-06-28 04:21:17,990 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 73 selfloop transitions, 13 changer transitions 0/92 dead transitions. [2024-06-28 04:21:17,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 92 transitions, 500 flow [2024-06-28 04:21:17,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:21:17,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:21:17,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 04:21:17,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551282051282051 [2024-06-28 04:21:17,993 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 228 flow. Second operand 6 states and 142 transitions. [2024-06-28 04:21:17,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 92 transitions, 500 flow [2024-06-28 04:21:17,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 92 transitions, 490 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-28 04:21:17,997 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 280 flow [2024-06-28 04:21:17,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=280, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2024-06-28 04:21:17,997 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 10 predicate places. [2024-06-28 04:21:17,998 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 280 flow [2024-06-28 04:21:17,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:17,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:17,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:17,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 04:21:17,998 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:21:17,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:17,999 INFO L85 PathProgramCache]: Analyzing trace with hash 349149272, now seen corresponding path program 1 times [2024-06-28 04:21:17,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:17,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852183627] [2024-06-28 04:21:17,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:18,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:20,851 INFO 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 04:21:20,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:20,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852183627] [2024-06-28 04:21:20,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852183627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:20,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:20,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:21:20,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897179601] [2024-06-28 04:21:20,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:20,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:21:20,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:20,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:21:20,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:21:20,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:21:20,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 280 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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 04:21:20,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:20,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:21:20,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:23,001 INFO L124 PetriNetUnfolderBase]: 8513/11674 cut-off events. [2024-06-28 04:21:23,001 INFO L125 PetriNetUnfolderBase]: For 16171/16171 co-relation queries the response was YES. [2024-06-28 04:21:23,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34737 conditions, 11674 events. 8513/11674 cut-off events. For 16171/16171 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 59425 event pairs, 3792 based on Foata normal form. 6/11676 useless extension candidates. Maximal degree in co-relation 34716. Up to 11438 conditions per place. [2024-06-28 04:21:23,062 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 66 selfloop transitions, 17 changer transitions 0/88 dead transitions. [2024-06-28 04:21:23,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 88 transitions, 534 flow [2024-06-28 04:21:23,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:21:23,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:21:23,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-28 04:21:23,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576923076923077 [2024-06-28 04:21:23,064 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 280 flow. Second operand 5 states and 119 transitions. [2024-06-28 04:21:23,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 88 transitions, 534 flow [2024-06-28 04:21:23,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 88 transitions, 498 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 04:21:23,074 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 330 flow [2024-06-28 04:21:23,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=330, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-06-28 04:21:23,075 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 11 predicate places. [2024-06-28 04:21:23,075 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 330 flow [2024-06-28 04:21:23,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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 04:21:23,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:23,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:23,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 04:21:23,075 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:21:23,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:23,076 INFO L85 PathProgramCache]: Analyzing trace with hash 390380822, now seen corresponding path program 2 times [2024-06-28 04:21:23,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:23,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756216142] [2024-06-28 04:21:23,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:23,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:25,510 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 04:21:25,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:25,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756216142] [2024-06-28 04:21:25,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756216142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:25,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:25,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:21:25,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097125993] [2024-06-28 04:21:25,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:25,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:21:25,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:25,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:21:25,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:21:25,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:21:25,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 330 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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 04:21:25,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:25,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:21:25,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:28,420 INFO L124 PetriNetUnfolderBase]: 8495/11650 cut-off events. [2024-06-28 04:21:28,420 INFO L125 PetriNetUnfolderBase]: For 24557/24557 co-relation queries the response was YES. [2024-06-28 04:21:28,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37550 conditions, 11650 events. 8495/11650 cut-off events. For 24557/24557 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 59711 event pairs, 3792 based on Foata normal form. 6/11652 useless extension candidates. Maximal degree in co-relation 37528. Up to 11366 conditions per place. [2024-06-28 04:21:28,490 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 76 selfloop transitions, 21 changer transitions 0/102 dead transitions. [2024-06-28 04:21:28,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 102 transitions, 644 flow [2024-06-28 04:21:28,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:21:28,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:21:28,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 04:21:28,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551282051282051 [2024-06-28 04:21:28,492 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 330 flow. Second operand 6 states and 142 transitions. [2024-06-28 04:21:28,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 102 transitions, 644 flow [2024-06-28 04:21:28,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 102 transitions, 588 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-28 04:21:28,509 INFO L231 Difference]: Finished difference. Result has 69 places, 67 transitions, 371 flow [2024-06-28 04:21:28,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=371, PETRI_PLACES=69, PETRI_TRANSITIONS=67} [2024-06-28 04:21:28,510 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 14 predicate places. [2024-06-28 04:21:28,510 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 371 flow [2024-06-28 04:21:28,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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 04:21:28,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:28,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:28,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 04:21:28,511 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:21:28,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:28,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1749539520, now seen corresponding path program 1 times [2024-06-28 04:21:28,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:28,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061259179] [2024-06-28 04:21:28,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:28,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:31,173 INFO 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 04:21:31,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:31,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061259179] [2024-06-28 04:21:31,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061259179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:31,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:31,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:21:31,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481981625] [2024-06-28 04:21:31,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:31,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:21:31,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:31,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:21:31,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:21:31,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:21:31,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 371 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:31,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:31,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:21:31,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:32,912 INFO L124 PetriNetUnfolderBase]: 6684/9207 cut-off events. [2024-06-28 04:21:32,912 INFO L125 PetriNetUnfolderBase]: For 21259/21259 co-relation queries the response was YES. [2024-06-28 04:21:32,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30988 conditions, 9207 events. 6684/9207 cut-off events. For 21259/21259 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 48037 event pairs, 3476 based on Foata normal form. 4/9207 useless extension candidates. Maximal degree in co-relation 30965. Up to 9118 conditions per place. [2024-06-28 04:21:32,960 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 71 selfloop transitions, 13 changer transitions 0/90 dead transitions. [2024-06-28 04:21:32,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 90 transitions, 617 flow [2024-06-28 04:21:32,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:21:32,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:21:32,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-28 04:21:32,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423076923076923 [2024-06-28 04:21:32,962 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 371 flow. Second operand 5 states and 115 transitions. [2024-06-28 04:21:32,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 90 transitions, 617 flow [2024-06-28 04:21:32,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 90 transitions, 558 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 04:21:32,969 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 384 flow [2024-06-28 04:21:32,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2024-06-28 04:21:32,969 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-06-28 04:21:32,970 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 384 flow [2024-06-28 04:21:32,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:32,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:32,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:32,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 04:21:32,970 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:21:32,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:32,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1504805873, now seen corresponding path program 1 times [2024-06-28 04:21:32,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:32,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695885212] [2024-06-28 04:21:32,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:32,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:35,040 INFO 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 04:21:35,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:35,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695885212] [2024-06-28 04:21:35,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695885212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:35,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:35,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:21:35,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987301616] [2024-06-28 04:21:35,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:35,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:21:35,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:35,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:21:35,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:21:35,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:21:35,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 384 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:35,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:35,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:21:35,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:37,586 INFO L124 PetriNetUnfolderBase]: 8899/12278 cut-off events. [2024-06-28 04:21:37,587 INFO L125 PetriNetUnfolderBase]: For 37329/37329 co-relation queries the response was YES. [2024-06-28 04:21:37,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43377 conditions, 12278 events. 8899/12278 cut-off events. For 37329/37329 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 63703 event pairs, 2615 based on Foata normal form. 24/12298 useless extension candidates. Maximal degree in co-relation 43353. Up to 11361 conditions per place. [2024-06-28 04:21:37,641 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 99 selfloop transitions, 27 changer transitions 0/131 dead transitions. [2024-06-28 04:21:37,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 131 transitions, 868 flow [2024-06-28 04:21:37,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:21:37,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:21:37,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 04:21:37,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47802197802197804 [2024-06-28 04:21:37,643 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 384 flow. Second operand 7 states and 174 transitions. [2024-06-28 04:21:37,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 131 transitions, 868 flow [2024-06-28 04:21:37,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 131 transitions, 830 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 04:21:37,658 INFO L231 Difference]: Finished difference. Result has 74 places, 75 transitions, 465 flow [2024-06-28 04:21:37,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=465, PETRI_PLACES=74, PETRI_TRANSITIONS=75} [2024-06-28 04:21:37,659 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 19 predicate places. [2024-06-28 04:21:37,659 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 75 transitions, 465 flow [2024-06-28 04:21:37,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:37,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:37,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:37,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 04:21:37,659 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:21:37,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:37,660 INFO L85 PathProgramCache]: Analyzing trace with hash -222249197, now seen corresponding path program 2 times [2024-06-28 04:21:37,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:37,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538632955] [2024-06-28 04:21:37,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:37,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:40,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:21:40,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:40,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538632955] [2024-06-28 04:21:40,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538632955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:40,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:40,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:21:40,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43044428] [2024-06-28 04:21:40,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:40,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:21:40,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:40,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:21:40,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:21:40,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:21:40,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 75 transitions, 465 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:40,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:40,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:21:40,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:43,320 INFO L124 PetriNetUnfolderBase]: 8830/12179 cut-off events. [2024-06-28 04:21:43,321 INFO L125 PetriNetUnfolderBase]: For 45721/45721 co-relation queries the response was YES. [2024-06-28 04:21:43,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44770 conditions, 12179 events. 8830/12179 cut-off events. For 45721/45721 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 63061 event pairs, 3236 based on Foata normal form. 30/12205 useless extension candidates. Maximal degree in co-relation 44745. Up to 11577 conditions per place. [2024-06-28 04:21:43,388 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 88 selfloop transitions, 22 changer transitions 0/115 dead transitions. [2024-06-28 04:21:43,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 115 transitions, 791 flow [2024-06-28 04:21:43,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:21:43,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:21:43,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 04:21:43,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2024-06-28 04:21:43,390 INFO L175 Difference]: Start difference. First operand has 74 places, 75 transitions, 465 flow. Second operand 6 states and 146 transitions. [2024-06-28 04:21:43,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 115 transitions, 791 flow [2024-06-28 04:21:43,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 115 transitions, 757 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 04:21:43,412 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 489 flow [2024-06-28 04:21:43,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=489, PETRI_PLACES=77, PETRI_TRANSITIONS=75} [2024-06-28 04:21:43,413 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 22 predicate places. [2024-06-28 04:21:43,413 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 489 flow [2024-06-28 04:21:43,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:43,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:43,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:43,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 04:21:43,414 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:21:43,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:43,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1493879637, now seen corresponding path program 3 times [2024-06-28 04:21:43,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:43,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745414381] [2024-06-28 04:21:43,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:43,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:46,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:21:46,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:46,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745414381] [2024-06-28 04:21:46,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745414381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:46,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:46,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:21:46,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846802998] [2024-06-28 04:21:46,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:46,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:21:46,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:46,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:21:46,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:21:46,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:21:46,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 75 transitions, 489 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:46,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:46,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:21:46,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:48,895 INFO L124 PetriNetUnfolderBase]: 8912/12309 cut-off events. [2024-06-28 04:21:48,896 INFO L125 PetriNetUnfolderBase]: For 52933/52933 co-relation queries the response was YES. [2024-06-28 04:21:48,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46342 conditions, 12309 events. 8912/12309 cut-off events. For 52933/52933 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 63963 event pairs, 3625 based on Foata normal form. 30/12335 useless extension candidates. Maximal degree in co-relation 46315. Up to 11755 conditions per place. [2024-06-28 04:21:48,947 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 98 selfloop transitions, 23 changer transitions 0/126 dead transitions. [2024-06-28 04:21:48,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 126 transitions, 889 flow [2024-06-28 04:21:48,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:21:48,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:21:48,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 04:21:48,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45879120879120877 [2024-06-28 04:21:48,950 INFO L175 Difference]: Start difference. First operand has 77 places, 75 transitions, 489 flow. Second operand 7 states and 167 transitions. [2024-06-28 04:21:48,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 126 transitions, 889 flow [2024-06-28 04:21:48,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 126 transitions, 837 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 04:21:48,980 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 527 flow [2024-06-28 04:21:48,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=527, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2024-06-28 04:21:48,992 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 24 predicate places. [2024-06-28 04:21:48,992 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 527 flow [2024-06-28 04:21:48,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:48,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:48,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:48,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 04:21:48,993 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:21:48,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:48,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1494064087, now seen corresponding path program 1 times [2024-06-28 04:21:48,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:48,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082905624] [2024-06-28 04:21:48,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:48,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:52,758 INFO 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 04:21:52,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:52,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082905624] [2024-06-28 04:21:52,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082905624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:52,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:52,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:21:52,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549299571] [2024-06-28 04:21:52,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:52,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:21:52,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:52,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:21:52,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:21:52,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:21:52,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 527 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:52,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:52,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:21:52,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:55,410 INFO L124 PetriNetUnfolderBase]: 8873/12252 cut-off events. [2024-06-28 04:21:55,411 INFO L125 PetriNetUnfolderBase]: For 62093/62093 co-relation queries the response was YES. [2024-06-28 04:21:55,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47491 conditions, 12252 events. 8873/12252 cut-off events. For 62093/62093 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 63532 event pairs, 3248 based on Foata normal form. 18/12266 useless extension candidates. Maximal degree in co-relation 47463. Up to 11208 conditions per place. [2024-06-28 04:21:55,480 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 96 selfloop transitions, 29 changer transitions 0/130 dead transitions. [2024-06-28 04:21:55,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 130 transitions, 935 flow [2024-06-28 04:21:55,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:21:55,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:21:55,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 04:21:55,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-28 04:21:55,483 INFO L175 Difference]: Start difference. First operand has 79 places, 77 transitions, 527 flow. Second operand 7 states and 168 transitions. [2024-06-28 04:21:55,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 130 transitions, 935 flow [2024-06-28 04:21:55,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 130 transitions, 881 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 04:21:55,522 INFO L231 Difference]: Finished difference. Result has 80 places, 78 transitions, 558 flow [2024-06-28 04:21:55,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=558, PETRI_PLACES=80, PETRI_TRANSITIONS=78} [2024-06-28 04:21:55,522 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 25 predicate places. [2024-06-28 04:21:55,522 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 558 flow [2024-06-28 04:21:55,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:55,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:55,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:55,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 04:21:55,523 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:21:55,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:55,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1598848035, now seen corresponding path program 1 times [2024-06-28 04:21:55,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:55,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132422713] [2024-06-28 04:21:55,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:55,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:57,872 INFO 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 04:21:57,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:57,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132422713] [2024-06-28 04:21:57,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132422713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:57,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:57,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:21:57,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923637291] [2024-06-28 04:21:57,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:57,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:21:57,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:57,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:21:57,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:21:57,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:21:57,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 558 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:57,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:57,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:21:57,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:00,189 INFO L124 PetriNetUnfolderBase]: 8899/12291 cut-off events. [2024-06-28 04:22:00,204 INFO L125 PetriNetUnfolderBase]: For 70615/70615 co-relation queries the response was YES. [2024-06-28 04:22:00,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49039 conditions, 12291 events. 8899/12291 cut-off events. For 70615/70615 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 63867 event pairs, 3958 based on Foata normal form. 8/12298 useless extension candidates. Maximal degree in co-relation 49010. Up to 12115 conditions per place. [2024-06-28 04:22:00,285 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 103 selfloop transitions, 20 changer transitions 0/128 dead transitions. [2024-06-28 04:22:00,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 128 transitions, 1044 flow [2024-06-28 04:22:00,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:22:00,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:22:00,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-28 04:22:00,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4391025641025641 [2024-06-28 04:22:00,287 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 558 flow. Second operand 6 states and 137 transitions. [2024-06-28 04:22:00,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 128 transitions, 1044 flow [2024-06-28 04:22:00,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 128 transitions, 967 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 04:22:00,335 INFO L231 Difference]: Finished difference. Result has 83 places, 96 transitions, 687 flow [2024-06-28 04:22:00,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=687, PETRI_PLACES=83, PETRI_TRANSITIONS=96} [2024-06-28 04:22:00,335 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 28 predicate places. [2024-06-28 04:22:00,335 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 96 transitions, 687 flow [2024-06-28 04:22:00,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:00,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:00,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:00,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 04:22:00,336 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:22:00,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:00,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1970551647, now seen corresponding path program 1 times [2024-06-28 04:22:00,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:00,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131159037] [2024-06-28 04:22:00,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:00,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:02,589 INFO 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 04:22:02,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:02,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131159037] [2024-06-28 04:22:02,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131159037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:02,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:02,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:22:02,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075216958] [2024-06-28 04:22:02,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:02,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:22:02,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:02,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:22:02,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:22:02,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:22:02,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 96 transitions, 687 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:02,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:02,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:22:02,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:05,069 INFO L124 PetriNetUnfolderBase]: 8498/11897 cut-off events. [2024-06-28 04:22:05,070 INFO L125 PetriNetUnfolderBase]: For 86920/86926 co-relation queries the response was YES. [2024-06-28 04:22:05,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51454 conditions, 11897 events. 8498/11897 cut-off events. For 86920/86926 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 62785 event pairs, 3651 based on Foata normal form. 14/11908 useless extension candidates. Maximal degree in co-relation 51422. Up to 11454 conditions per place. [2024-06-28 04:22:05,142 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 106 selfloop transitions, 24 changer transitions 0/139 dead transitions. [2024-06-28 04:22:05,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 139 transitions, 1169 flow [2024-06-28 04:22:05,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:22:05,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:22:05,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-28 04:22:05,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2024-06-28 04:22:05,144 INFO L175 Difference]: Start difference. First operand has 83 places, 96 transitions, 687 flow. Second operand 6 states and 141 transitions. [2024-06-28 04:22:05,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 139 transitions, 1169 flow [2024-06-28 04:22:05,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 139 transitions, 1143 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-28 04:22:05,222 INFO L231 Difference]: Finished difference. Result has 89 places, 108 transitions, 847 flow [2024-06-28 04:22:05,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=847, PETRI_PLACES=89, PETRI_TRANSITIONS=108} [2024-06-28 04:22:05,223 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 34 predicate places. [2024-06-28 04:22:05,223 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 108 transitions, 847 flow [2024-06-28 04:22:05,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:05,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:05,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:05,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 04:22:05,223 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:22:05,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:05,224 INFO L85 PathProgramCache]: Analyzing trace with hash -658469449, now seen corresponding path program 2 times [2024-06-28 04:22:05,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:05,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481356660] [2024-06-28 04:22:05,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:05,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:07,843 INFO 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 04:22:07,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:07,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481356660] [2024-06-28 04:22:07,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481356660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:07,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:07,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:22:07,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55523708] [2024-06-28 04:22:07,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:07,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:22:07,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:07,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:22:07,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:22:07,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:22:07,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 108 transitions, 847 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:07,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:07,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:22:07,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:09,988 INFO L124 PetriNetUnfolderBase]: 8517/11908 cut-off events. [2024-06-28 04:22:09,989 INFO L125 PetriNetUnfolderBase]: For 102085/102085 co-relation queries the response was YES. [2024-06-28 04:22:10,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54529 conditions, 11908 events. 8517/11908 cut-off events. For 102085/102085 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 62782 event pairs, 3900 based on Foata normal form. 12/11915 useless extension candidates. Maximal degree in co-relation 54493. Up to 11550 conditions per place. [2024-06-28 04:22:10,057 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 99 selfloop transitions, 28 changer transitions 0/136 dead transitions. [2024-06-28 04:22:10,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 136 transitions, 1209 flow [2024-06-28 04:22:10,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:22:10,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:22:10,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-28 04:22:10,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4326923076923077 [2024-06-28 04:22:10,060 INFO L175 Difference]: Start difference. First operand has 89 places, 108 transitions, 847 flow. Second operand 6 states and 135 transitions. [2024-06-28 04:22:10,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 136 transitions, 1209 flow [2024-06-28 04:22:10,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 136 transitions, 1145 flow, removed 31 selfloop flow, removed 1 redundant places. [2024-06-28 04:22:10,169 INFO L231 Difference]: Finished difference. Result has 94 places, 112 transitions, 912 flow [2024-06-28 04:22:10,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=912, PETRI_PLACES=94, PETRI_TRANSITIONS=112} [2024-06-28 04:22:10,170 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 39 predicate places. [2024-06-28 04:22:10,170 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 112 transitions, 912 flow [2024-06-28 04:22:10,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:10,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:10,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:10,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 04:22:10,170 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:22:10,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:10,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1093943804, now seen corresponding path program 1 times [2024-06-28 04:22:10,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:10,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277167651] [2024-06-28 04:22:10,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:10,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:12,765 INFO 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 04:22:12,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:12,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277167651] [2024-06-28 04:22:12,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277167651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:12,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:12,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:22:12,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408881408] [2024-06-28 04:22:12,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:12,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:22:12,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:12,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:22:12,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:22:12,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:22:12,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 112 transitions, 912 flow. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:12,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:12,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:22:12,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:15,701 INFO L124 PetriNetUnfolderBase]: 9317/12848 cut-off events. [2024-06-28 04:22:15,702 INFO L125 PetriNetUnfolderBase]: For 117347/117347 co-relation queries the response was YES. [2024-06-28 04:22:15,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60634 conditions, 12848 events. 9317/12848 cut-off events. For 117347/117347 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 66740 event pairs, 3881 based on Foata normal form. 16/12860 useless extension candidates. Maximal degree in co-relation 60595. Up to 12337 conditions per place. [2024-06-28 04:22:15,778 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 110 selfloop transitions, 48 changer transitions 0/163 dead transitions. [2024-06-28 04:22:15,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 163 transitions, 1524 flow [2024-06-28 04:22:15,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:22:15,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:22:15,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-06-28 04:22:15,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41586538461538464 [2024-06-28 04:22:15,780 INFO L175 Difference]: Start difference. First operand has 94 places, 112 transitions, 912 flow. Second operand 8 states and 173 transitions. [2024-06-28 04:22:15,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 163 transitions, 1524 flow [2024-06-28 04:22:15,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 163 transitions, 1433 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 04:22:15,873 INFO L231 Difference]: Finished difference. Result has 100 places, 128 transitions, 1132 flow [2024-06-28 04:22:15,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1132, PETRI_PLACES=100, PETRI_TRANSITIONS=128} [2024-06-28 04:22:15,874 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 45 predicate places. [2024-06-28 04:22:15,874 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 128 transitions, 1132 flow [2024-06-28 04:22:15,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:15,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:15,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:15,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 04:22:15,875 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:22:15,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:15,875 INFO L85 PathProgramCache]: Analyzing trace with hash -619513168, now seen corresponding path program 2 times [2024-06-28 04:22:15,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:15,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888406784] [2024-06-28 04:22:15,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:15,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:19,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:22:19,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:19,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888406784] [2024-06-28 04:22:19,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888406784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:19,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:19,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:22:19,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838531496] [2024-06-28 04:22:19,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:19,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:22:19,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:19,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:22:19,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:22:19,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:22:19,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 128 transitions, 1132 flow. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:19,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:19,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:22:19,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:22,041 INFO L124 PetriNetUnfolderBase]: 9457/13056 cut-off events. [2024-06-28 04:22:22,042 INFO L125 PetriNetUnfolderBase]: For 140588/140588 co-relation queries the response was YES. [2024-06-28 04:22:22,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65955 conditions, 13056 events. 9457/13056 cut-off events. For 140588/140588 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 68187 event pairs, 3891 based on Foata normal form. 16/13068 useless extension candidates. Maximal degree in co-relation 65913. Up to 12205 conditions per place. [2024-06-28 04:22:22,121 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 123 selfloop transitions, 60 changer transitions 0/188 dead transitions. [2024-06-28 04:22:22,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 188 transitions, 1902 flow [2024-06-28 04:22:22,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:22:22,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:22:22,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 04:22:22,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45604395604395603 [2024-06-28 04:22:22,123 INFO L175 Difference]: Start difference. First operand has 100 places, 128 transitions, 1132 flow. Second operand 7 states and 166 transitions. [2024-06-28 04:22:22,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 188 transitions, 1902 flow [2024-06-28 04:22:22,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 188 transitions, 1826 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-28 04:22:22,247 INFO L231 Difference]: Finished difference. Result has 106 places, 146 transitions, 1463 flow [2024-06-28 04:22:22,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1463, PETRI_PLACES=106, PETRI_TRANSITIONS=146} [2024-06-28 04:22:22,247 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 51 predicate places. [2024-06-28 04:22:22,248 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 146 transitions, 1463 flow [2024-06-28 04:22:22,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:22,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:22,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:22,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 04:22:22,250 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:22:22,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:22,251 INFO L85 PathProgramCache]: Analyzing trace with hash 957560606, now seen corresponding path program 1 times [2024-06-28 04:22:22,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:22,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931929164] [2024-06-28 04:22:22,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:22,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:25,056 INFO 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 04:22:25,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:25,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931929164] [2024-06-28 04:22:25,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931929164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:25,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:25,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:22:25,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626872044] [2024-06-28 04:22:25,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:25,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:22:25,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:25,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:22:25,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:22:25,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:22:25,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 146 transitions, 1463 flow. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:25,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:25,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:22:25,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:28,125 INFO L124 PetriNetUnfolderBase]: 9745/13423 cut-off events. [2024-06-28 04:22:28,126 INFO L125 PetriNetUnfolderBase]: For 155741/155741 co-relation queries the response was YES. [2024-06-28 04:22:28,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71010 conditions, 13423 events. 9745/13423 cut-off events. For 155741/155741 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 69733 event pairs, 3831 based on Foata normal form. 16/13437 useless extension candidates. Maximal degree in co-relation 70964. Up to 12669 conditions per place. [2024-06-28 04:22:28,227 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 179 selfloop transitions, 37 changer transitions 0/221 dead transitions. [2024-06-28 04:22:28,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 221 transitions, 2402 flow [2024-06-28 04:22:28,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:22:28,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:22:28,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 04:22:28,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4725274725274725 [2024-06-28 04:22:28,229 INFO L175 Difference]: Start difference. First operand has 106 places, 146 transitions, 1463 flow. Second operand 7 states and 172 transitions. [2024-06-28 04:22:28,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 221 transitions, 2402 flow [2024-06-28 04:22:28,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 221 transitions, 2310 flow, removed 45 selfloop flow, removed 1 redundant places. [2024-06-28 04:22:28,366 INFO L231 Difference]: Finished difference. Result has 114 places, 166 transitions, 1703 flow [2024-06-28 04:22:28,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1703, PETRI_PLACES=114, PETRI_TRANSITIONS=166} [2024-06-28 04:22:28,373 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 59 predicate places. [2024-06-28 04:22:28,373 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 166 transitions, 1703 flow [2024-06-28 04:22:28,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:28,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:28,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:28,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 04:22:28,374 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:22:28,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:28,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1014917564, now seen corresponding path program 2 times [2024-06-28 04:22:28,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:28,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38252102] [2024-06-28 04:22:28,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:28,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:31,392 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 04:22:31,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:31,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38252102] [2024-06-28 04:22:31,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38252102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:31,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:31,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:22:31,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715265144] [2024-06-28 04:22:31,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:31,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:22:31,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:31,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:22:31,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:22:31,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:22:31,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 166 transitions, 1703 flow. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:31,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:31,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:22:31,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:34,378 INFO L124 PetriNetUnfolderBase]: 9901/13615 cut-off events. [2024-06-28 04:22:34,378 INFO L125 PetriNetUnfolderBase]: For 165207/165207 co-relation queries the response was YES. [2024-06-28 04:22:34,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72959 conditions, 13615 events. 9901/13615 cut-off events. For 165207/165207 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 70707 event pairs, 3957 based on Foata normal form. 16/13630 useless extension candidates. Maximal degree in co-relation 72908. Up to 13081 conditions per place. [2024-06-28 04:22:34,470 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 185 selfloop transitions, 31 changer transitions 0/221 dead transitions. [2024-06-28 04:22:34,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 221 transitions, 2522 flow [2024-06-28 04:22:34,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:22:34,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:22:34,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 04:22:34,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478021978021978 [2024-06-28 04:22:34,472 INFO L175 Difference]: Start difference. First operand has 114 places, 166 transitions, 1703 flow. Second operand 7 states and 163 transitions. [2024-06-28 04:22:34,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 221 transitions, 2522 flow [2024-06-28 04:22:34,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 221 transitions, 2420 flow, removed 42 selfloop flow, removed 2 redundant places. [2024-06-28 04:22:34,610 INFO L231 Difference]: Finished difference. Result has 120 places, 176 transitions, 1812 flow [2024-06-28 04:22:34,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1617, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1812, PETRI_PLACES=120, PETRI_TRANSITIONS=176} [2024-06-28 04:22:34,611 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 65 predicate places. [2024-06-28 04:22:34,611 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 176 transitions, 1812 flow [2024-06-28 04:22:34,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:34,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:34,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:34,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 04:22:34,612 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:22:34,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:34,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1105377596, now seen corresponding path program 3 times [2024-06-28 04:22:34,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:34,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409706618] [2024-06-28 04:22:34,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:34,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:37,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:22:37,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:37,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409706618] [2024-06-28 04:22:37,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409706618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:37,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:37,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:22:37,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396055751] [2024-06-28 04:22:37,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:37,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:22:37,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:37,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:22:37,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:22:37,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:22:37,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 176 transitions, 1812 flow. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:37,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:37,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:22:37,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:40,784 INFO L124 PetriNetUnfolderBase]: 9953/13683 cut-off events. [2024-06-28 04:22:40,784 INFO L125 PetriNetUnfolderBase]: For 181158/181158 co-relation queries the response was YES. [2024-06-28 04:22:40,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74788 conditions, 13683 events. 9953/13683 cut-off events. For 181158/181158 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 70969 event pairs, 3941 based on Foata normal form. 16/13698 useless extension candidates. Maximal degree in co-relation 74734. Up to 13125 conditions per place. [2024-06-28 04:22:40,899 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 195 selfloop transitions, 39 changer transitions 0/239 dead transitions. [2024-06-28 04:22:40,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 239 transitions, 2602 flow [2024-06-28 04:22:40,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:22:40,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:22:40,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 205 transitions. [2024-06-28 04:22:40,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43803418803418803 [2024-06-28 04:22:40,902 INFO L175 Difference]: Start difference. First operand has 120 places, 176 transitions, 1812 flow. Second operand 9 states and 205 transitions. [2024-06-28 04:22:40,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 239 transitions, 2602 flow [2024-06-28 04:22:41,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 239 transitions, 2540 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-28 04:22:41,110 INFO L231 Difference]: Finished difference. Result has 126 places, 181 transitions, 1912 flow [2024-06-28 04:22:41,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1750, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1912, PETRI_PLACES=126, PETRI_TRANSITIONS=181} [2024-06-28 04:22:41,110 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 71 predicate places. [2024-06-28 04:22:41,110 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 181 transitions, 1912 flow [2024-06-28 04:22:41,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:41,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:41,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:41,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 04:22:41,111 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:22:41,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:41,111 INFO L85 PathProgramCache]: Analyzing trace with hash -619499280, now seen corresponding path program 1 times [2024-06-28 04:22:41,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:41,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490620850] [2024-06-28 04:22:41,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:41,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:44,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:22:44,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:44,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490620850] [2024-06-28 04:22:44,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490620850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:44,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:44,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:44,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623490878] [2024-06-28 04:22:44,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:44,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:44,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:44,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:44,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:44,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:22:44,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 181 transitions, 1912 flow. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:44,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:44,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:22:44,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:47,911 INFO L124 PetriNetUnfolderBase]: 10037/13799 cut-off events. [2024-06-28 04:22:47,911 INFO L125 PetriNetUnfolderBase]: For 196890/196890 co-relation queries the response was YES. [2024-06-28 04:22:47,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76784 conditions, 13799 events. 10037/13799 cut-off events. For 196890/196890 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 71588 event pairs, 3985 based on Foata normal form. 16/13814 useless extension candidates. Maximal degree in co-relation 76728. Up to 13503 conditions per place. [2024-06-28 04:22:48,032 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 197 selfloop transitions, 25 changer transitions 0/227 dead transitions. [2024-06-28 04:22:48,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 227 transitions, 2604 flow [2024-06-28 04:22:48,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:22:48,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:22:48,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 04:22:48,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43956043956043955 [2024-06-28 04:22:48,035 INFO L175 Difference]: Start difference. First operand has 126 places, 181 transitions, 1912 flow. Second operand 7 states and 160 transitions. [2024-06-28 04:22:48,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 227 transitions, 2604 flow [2024-06-28 04:22:48,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 227 transitions, 2490 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 04:22:48,245 INFO L231 Difference]: Finished difference. Result has 126 places, 184 transitions, 1915 flow [2024-06-28 04:22:48,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1798, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1915, PETRI_PLACES=126, PETRI_TRANSITIONS=184} [2024-06-28 04:22:48,246 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 71 predicate places. [2024-06-28 04:22:48,246 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 184 transitions, 1915 flow [2024-06-28 04:22:48,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:48,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:48,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:48,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 04:22:48,247 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:22:48,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:48,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1283143308, now seen corresponding path program 1 times [2024-06-28 04:22:48,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:48,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132814204] [2024-06-28 04:22:48,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:48,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:51,618 INFO 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 04:22:51,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:51,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132814204] [2024-06-28 04:22:51,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132814204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:51,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:51,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:51,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020677699] [2024-06-28 04:22:51,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:51,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:51,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:51,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:51,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:51,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:22:51,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 184 transitions, 1915 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:51,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:51,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:22:51,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:54,944 INFO L124 PetriNetUnfolderBase]: 9629/13378 cut-off events. [2024-06-28 04:22:54,944 INFO L125 PetriNetUnfolderBase]: For 218876/218967 co-relation queries the response was YES. [2024-06-28 04:22:54,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75911 conditions, 13378 events. 9629/13378 cut-off events. For 218876/218967 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 70432 event pairs, 3502 based on Foata normal form. 30/13356 useless extension candidates. Maximal degree in co-relation 75854. Up to 12529 conditions per place. [2024-06-28 04:22:55,043 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 176 selfloop transitions, 37 changer transitions 0/231 dead transitions. [2024-06-28 04:22:55,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 231 transitions, 2623 flow [2024-06-28 04:22:55,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:22:55,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:22:55,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-28 04:22:55,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45054945054945056 [2024-06-28 04:22:55,046 INFO L175 Difference]: Start difference. First operand has 126 places, 184 transitions, 1915 flow. Second operand 7 states and 164 transitions. [2024-06-28 04:22:55,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 231 transitions, 2623 flow [2024-06-28 04:22:55,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 231 transitions, 2540 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 04:22:55,224 INFO L231 Difference]: Finished difference. Result has 128 places, 190 transitions, 2032 flow [2024-06-28 04:22:55,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1832, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2032, PETRI_PLACES=128, PETRI_TRANSITIONS=190} [2024-06-28 04:22:55,225 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 73 predicate places. [2024-06-28 04:22:55,225 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 190 transitions, 2032 flow [2024-06-28 04:22:55,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:55,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:55,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:55,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 04:22:55,225 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:22:55,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:55,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1283140518, now seen corresponding path program 2 times [2024-06-28 04:22:55,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:55,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663890555] [2024-06-28 04:22:55,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:55,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:22:58,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:58,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663890555] [2024-06-28 04:22:58,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663890555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:58,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:58,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:58,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448973254] [2024-06-28 04:22:58,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:58,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:58,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:58,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:58,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:58,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:22:58,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 190 transitions, 2032 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:58,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:58,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:22:58,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:01,738 INFO L124 PetriNetUnfolderBase]: 9699/13472 cut-off events. [2024-06-28 04:23:01,738 INFO L125 PetriNetUnfolderBase]: For 241924/242015 co-relation queries the response was YES. [2024-06-28 04:23:01,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78657 conditions, 13472 events. 9699/13472 cut-off events. For 241924/242015 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 71076 event pairs, 3740 based on Foata normal form. 30/13450 useless extension candidates. Maximal degree in co-relation 78599. Up to 12761 conditions per place. [2024-06-28 04:23:01,835 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 177 selfloop transitions, 33 changer transitions 0/228 dead transitions. [2024-06-28 04:23:01,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 228 transitions, 2598 flow [2024-06-28 04:23:01,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:23:01,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:23:01,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-28 04:23:01,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340659340659341 [2024-06-28 04:23:01,837 INFO L175 Difference]: Start difference. First operand has 128 places, 190 transitions, 2032 flow. Second operand 7 states and 158 transitions. [2024-06-28 04:23:01,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 228 transitions, 2598 flow [2024-06-28 04:23:02,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 228 transitions, 2493 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-06-28 04:23:02,080 INFO L231 Difference]: Finished difference. Result has 132 places, 193 transitions, 2070 flow [2024-06-28 04:23:02,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1939, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2070, PETRI_PLACES=132, PETRI_TRANSITIONS=193} [2024-06-28 04:23:02,081 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 77 predicate places. [2024-06-28 04:23:02,081 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 193 transitions, 2070 flow [2024-06-28 04:23:02,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:02,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:02,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:02,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 04:23:02,082 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:23:02,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:02,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1428898730, now seen corresponding path program 3 times [2024-06-28 04:23:02,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:02,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39119677] [2024-06-28 04:23:02,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:02,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:06,052 INFO 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 04:23:06,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:06,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39119677] [2024-06-28 04:23:06,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39119677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:06,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:06,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:23:06,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976999735] [2024-06-28 04:23:06,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:06,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:23:06,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:06,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:23:06,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:23:06,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:23:06,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 193 transitions, 2070 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:06,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:06,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:23:06,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:09,019 INFO L124 PetriNetUnfolderBase]: 9822/13635 cut-off events. [2024-06-28 04:23:09,019 INFO L125 PetriNetUnfolderBase]: For 263213/263290 co-relation queries the response was YES. [2024-06-28 04:23:09,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80296 conditions, 13635 events. 9822/13635 cut-off events. For 263213/263290 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 72083 event pairs, 4043 based on Foata normal form. 36/13617 useless extension candidates. Maximal degree in co-relation 80236. Up to 12861 conditions per place. [2024-06-28 04:23:09,124 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 176 selfloop transitions, 35 changer transitions 0/229 dead transitions. [2024-06-28 04:23:09,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 229 transitions, 2648 flow [2024-06-28 04:23:09,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:23:09,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:23:09,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-28 04:23:09,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340659340659341 [2024-06-28 04:23:09,127 INFO L175 Difference]: Start difference. First operand has 132 places, 193 transitions, 2070 flow. Second operand 7 states and 158 transitions. [2024-06-28 04:23:09,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 229 transitions, 2648 flow [2024-06-28 04:23:09,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 229 transitions, 2521 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-28 04:23:09,440 INFO L231 Difference]: Finished difference. Result has 134 places, 195 transitions, 2084 flow [2024-06-28 04:23:09,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1943, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2084, PETRI_PLACES=134, PETRI_TRANSITIONS=195} [2024-06-28 04:23:09,441 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 79 predicate places. [2024-06-28 04:23:09,441 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 195 transitions, 2084 flow [2024-06-28 04:23:09,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:09,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:09,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:09,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 04:23:09,441 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:23:09,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:09,442 INFO L85 PathProgramCache]: Analyzing trace with hash 520701868, now seen corresponding path program 1 times [2024-06-28 04:23:09,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:09,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966944050] [2024-06-28 04:23:09,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:09,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:09,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:11,083 INFO 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 04:23:11,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:11,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966944050] [2024-06-28 04:23:11,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966944050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:11,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:11,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:23:11,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268700665] [2024-06-28 04:23:11,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:11,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:23:11,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:11,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:23:11,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:23:11,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:23:11,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 195 transitions, 2084 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:11,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:11,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:23:11,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:13,866 INFO L124 PetriNetUnfolderBase]: 10281/14147 cut-off events. [2024-06-28 04:23:13,866 INFO L125 PetriNetUnfolderBase]: For 270860/270860 co-relation queries the response was YES. [2024-06-28 04:23:13,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84457 conditions, 14147 events. 10281/14147 cut-off events. For 270860/270860 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 74026 event pairs, 4066 based on Foata normal form. 2/14148 useless extension candidates. Maximal degree in co-relation 84396. Up to 14036 conditions per place. [2024-06-28 04:23:13,968 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 196 selfloop transitions, 10 changer transitions 0/211 dead transitions. [2024-06-28 04:23:13,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 211 transitions, 2548 flow [2024-06-28 04:23:13,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:23:13,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:23:13,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-06-28 04:23:13,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 04:23:13,969 INFO L175 Difference]: Start difference. First operand has 134 places, 195 transitions, 2084 flow. Second operand 5 states and 104 transitions. [2024-06-28 04:23:13,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 211 transitions, 2548 flow [2024-06-28 04:23:14,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 211 transitions, 2431 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 04:23:14,307 INFO L231 Difference]: Finished difference. Result has 135 places, 196 transitions, 2017 flow [2024-06-28 04:23:14,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1969, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2017, PETRI_PLACES=135, PETRI_TRANSITIONS=196} [2024-06-28 04:23:14,308 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 80 predicate places. [2024-06-28 04:23:14,308 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 196 transitions, 2017 flow [2024-06-28 04:23:14,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:14,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:14,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:14,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 04:23:14,309 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:23:14,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:14,310 INFO L85 PathProgramCache]: Analyzing trace with hash 791299498, now seen corresponding path program 1 times [2024-06-28 04:23:14,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:14,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152812001] [2024-06-28 04:23:14,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:14,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:18,107 INFO 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 04:23:18,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:18,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152812001] [2024-06-28 04:23:18,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152812001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:18,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:18,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:23:18,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131287160] [2024-06-28 04:23:18,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:18,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:23:18,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:18,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:23:18,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:23:18,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:23:18,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 196 transitions, 2017 flow. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:18,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:18,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:23:18,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:21,227 INFO L124 PetriNetUnfolderBase]: 10313/14187 cut-off events. [2024-06-28 04:23:21,228 INFO L125 PetriNetUnfolderBase]: For 283357/283371 co-relation queries the response was YES. [2024-06-28 04:23:21,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84837 conditions, 14187 events. 10313/14187 cut-off events. For 283357/283371 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 74363 event pairs, 3485 based on Foata normal form. 18/14201 useless extension candidates. Maximal degree in co-relation 84774. Up to 13877 conditions per place. [2024-06-28 04:23:21,368 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 201 selfloop transitions, 27 changer transitions 0/233 dead transitions. [2024-06-28 04:23:21,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 233 transitions, 2777 flow [2024-06-28 04:23:21,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:23:21,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:23:21,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-28 04:23:21,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-28 04:23:21,371 INFO L175 Difference]: Start difference. First operand has 135 places, 196 transitions, 2017 flow. Second operand 6 states and 136 transitions. [2024-06-28 04:23:21,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 233 transitions, 2777 flow [2024-06-28 04:23:21,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 233 transitions, 2753 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 04:23:21,779 INFO L231 Difference]: Finished difference. Result has 138 places, 202 transitions, 2205 flow [2024-06-28 04:23:21,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1993, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2205, PETRI_PLACES=138, PETRI_TRANSITIONS=202} [2024-06-28 04:23:21,779 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 83 predicate places. [2024-06-28 04:23:21,779 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 202 transitions, 2205 flow [2024-06-28 04:23:21,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:21,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:21,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:21,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 04:23:21,780 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:23:21,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:21,781 INFO L85 PathProgramCache]: Analyzing trace with hash 333118442, now seen corresponding path program 2 times [2024-06-28 04:23:21,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:21,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604968145] [2024-06-28 04:23:21,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:21,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:25,718 INFO 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 04:23:25,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:25,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604968145] [2024-06-28 04:23:25,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604968145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:25,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:25,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:25,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738999815] [2024-06-28 04:23:25,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:25,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:25,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:25,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:25,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:25,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:23:25,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 202 transitions, 2205 flow. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:25,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:25,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:23:25,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:28,841 INFO L124 PetriNetUnfolderBase]: 10301/14168 cut-off events. [2024-06-28 04:23:28,841 INFO L125 PetriNetUnfolderBase]: For 307706/307706 co-relation queries the response was YES. [2024-06-28 04:23:28,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86659 conditions, 14168 events. 10301/14168 cut-off events. For 307706/307706 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 74367 event pairs, 4066 based on Foata normal form. 4/14168 useless extension candidates. Maximal degree in co-relation 86595. Up to 13949 conditions per place. [2024-06-28 04:23:28,947 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 197 selfloop transitions, 24 changer transitions 0/226 dead transitions. [2024-06-28 04:23:28,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 226 transitions, 2705 flow [2024-06-28 04:23:28,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:23:28,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:23:28,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-28 04:23:28,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 04:23:28,949 INFO L175 Difference]: Start difference. First operand has 138 places, 202 transitions, 2205 flow. Second operand 6 states and 130 transitions. [2024-06-28 04:23:28,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 226 transitions, 2705 flow [2024-06-28 04:23:29,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 226 transitions, 2560 flow, removed 63 selfloop flow, removed 2 redundant places. [2024-06-28 04:23:29,366 INFO L231 Difference]: Finished difference. Result has 142 places, 202 transitions, 2116 flow [2024-06-28 04:23:29,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2060, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2116, PETRI_PLACES=142, PETRI_TRANSITIONS=202} [2024-06-28 04:23:29,367 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 87 predicate places. [2024-06-28 04:23:29,367 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 202 transitions, 2116 flow [2024-06-28 04:23:29,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:29,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:29,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:29,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 04:23:29,368 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:23:29,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:29,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1332738292, now seen corresponding path program 1 times [2024-06-28 04:23:29,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:29,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546340369] [2024-06-28 04:23:29,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:29,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:32,644 INFO 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 04:23:32,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:32,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546340369] [2024-06-28 04:23:32,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546340369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:32,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:32,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:32,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712821063] [2024-06-28 04:23:32,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:32,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:32,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:32,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:32,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:32,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:23:32,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 202 transitions, 2116 flow. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:32,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:32,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:23:32,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:35,966 INFO L124 PetriNetUnfolderBase]: 10339/14221 cut-off events. [2024-06-28 04:23:35,966 INFO L125 PetriNetUnfolderBase]: For 326890/326904 co-relation queries the response was YES. [2024-06-28 04:23:36,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87596 conditions, 14221 events. 10339/14221 cut-off events. For 326890/326904 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 74641 event pairs, 3607 based on Foata normal form. 18/14235 useless extension candidates. Maximal degree in co-relation 87530. Up to 13713 conditions per place. [2024-06-28 04:23:36,095 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 185 selfloop transitions, 48 changer transitions 0/238 dead transitions. [2024-06-28 04:23:36,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 238 transitions, 2760 flow [2024-06-28 04:23:36,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:23:36,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:23:36,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 04:23:36,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-06-28 04:23:36,097 INFO L175 Difference]: Start difference. First operand has 142 places, 202 transitions, 2116 flow. Second operand 6 states and 140 transitions. [2024-06-28 04:23:36,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 238 transitions, 2760 flow [2024-06-28 04:23:36,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 238 transitions, 2702 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 04:23:36,515 INFO L231 Difference]: Finished difference. Result has 143 places, 206 transitions, 2267 flow [2024-06-28 04:23:36,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2058, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2267, PETRI_PLACES=143, PETRI_TRANSITIONS=206} [2024-06-28 04:23:36,515 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 88 predicate places. [2024-06-28 04:23:36,516 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 206 transitions, 2267 flow [2024-06-28 04:23:36,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:36,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:36,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:36,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 04:23:36,516 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:23:36,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:36,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1118422706, now seen corresponding path program 2 times [2024-06-28 04:23:36,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:36,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937065032] [2024-06-28 04:23:36,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:36,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:40,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:40,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:40,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937065032] [2024-06-28 04:23:40,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937065032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:40,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:40,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:23:40,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048303782] [2024-06-28 04:23:40,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:40,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:23:40,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:40,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:23:40,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:23:40,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:23:40,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 206 transitions, 2267 flow. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:40,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:40,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:23:40,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:43,376 INFO L124 PetriNetUnfolderBase]: 10377/14283 cut-off events. [2024-06-28 04:23:43,376 INFO L125 PetriNetUnfolderBase]: For 357775/357789 co-relation queries the response was YES. [2024-06-28 04:23:43,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91005 conditions, 14283 events. 10377/14283 cut-off events. For 357775/357789 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 75057 event pairs, 3625 based on Foata normal form. 18/14297 useless extension candidates. Maximal degree in co-relation 90938. Up to 13641 conditions per place. [2024-06-28 04:23:43,544 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 196 selfloop transitions, 57 changer transitions 0/258 dead transitions. [2024-06-28 04:23:43,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 258 transitions, 3181 flow [2024-06-28 04:23:43,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:23:43,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:23:43,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-28 04:23:43,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45054945054945056 [2024-06-28 04:23:43,546 INFO L175 Difference]: Start difference. First operand has 143 places, 206 transitions, 2267 flow. Second operand 7 states and 164 transitions. [2024-06-28 04:23:43,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 258 transitions, 3181 flow [2024-06-28 04:23:44,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 258 transitions, 3016 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 04:23:44,323 INFO L231 Difference]: Finished difference. Result has 145 places, 214 transitions, 2429 flow [2024-06-28 04:23:44,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2106, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2429, PETRI_PLACES=145, PETRI_TRANSITIONS=214} [2024-06-28 04:23:44,324 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 90 predicate places. [2024-06-28 04:23:44,324 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 214 transitions, 2429 flow [2024-06-28 04:23:44,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:44,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:44,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:44,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 04:23:44,325 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:23:44,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:44,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1346043416, now seen corresponding path program 3 times [2024-06-28 04:23:44,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:44,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531341450] [2024-06-28 04:23:44,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:44,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:47,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:47,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:47,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531341450] [2024-06-28 04:23:47,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531341450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:47,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:47,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:23:47,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856875901] [2024-06-28 04:23:47,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:47,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:23:47,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:47,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:23:47,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:23:47,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:23:47,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 214 transitions, 2429 flow. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:47,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:47,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:23:47,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:51,346 INFO L124 PetriNetUnfolderBase]: 10415/14345 cut-off events. [2024-06-28 04:23:51,347 INFO L125 PetriNetUnfolderBase]: For 373076/373090 co-relation queries the response was YES. [2024-06-28 04:23:51,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93129 conditions, 14345 events. 10415/14345 cut-off events. For 373076/373090 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 75559 event pairs, 3625 based on Foata normal form. 18/14359 useless extension candidates. Maximal degree in co-relation 93062. Up to 13675 conditions per place. [2024-06-28 04:23:51,456 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 191 selfloop transitions, 62 changer transitions 0/258 dead transitions. [2024-06-28 04:23:51,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 258 transitions, 3245 flow [2024-06-28 04:23:51,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:23:51,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:23:51,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-28 04:23:51,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423076923076923 [2024-06-28 04:23:51,458 INFO L175 Difference]: Start difference. First operand has 145 places, 214 transitions, 2429 flow. Second operand 7 states and 161 transitions. [2024-06-28 04:23:51,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 258 transitions, 3245 flow [2024-06-28 04:23:51,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 258 transitions, 3053 flow, removed 70 selfloop flow, removed 3 redundant places. [2024-06-28 04:23:51,979 INFO L231 Difference]: Finished difference. Result has 149 places, 218 transitions, 2474 flow [2024-06-28 04:23:51,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2263, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2474, PETRI_PLACES=149, PETRI_TRANSITIONS=218} [2024-06-28 04:23:51,980 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 94 predicate places. [2024-06-28 04:23:51,980 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 218 transitions, 2474 flow [2024-06-28 04:23:51,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:51,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:51,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:51,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 04:23:51,981 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:23:51,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:51,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1346043075, now seen corresponding path program 1 times [2024-06-28 04:23:51,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:51,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960598443] [2024-06-28 04:23:51,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:51,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:54,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:54,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:54,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960598443] [2024-06-28 04:23:54,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960598443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:54,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:54,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:23:54,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147301797] [2024-06-28 04:23:54,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:54,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:23:54,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:54,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:23:54,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:23:54,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:23:54,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 218 transitions, 2474 flow. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:54,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:54,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:23:54,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:58,850 INFO L124 PetriNetUnfolderBase]: 10983/15088 cut-off events. [2024-06-28 04:23:58,851 INFO L125 PetriNetUnfolderBase]: For 410237/410258 co-relation queries the response was YES. [2024-06-28 04:23:58,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98554 conditions, 15088 events. 10983/15088 cut-off events. For 410237/410258 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 79207 event pairs, 3523 based on Foata normal form. 36/15122 useless extension candidates. Maximal degree in co-relation 98485. Up to 13476 conditions per place. [2024-06-28 04:23:59,003 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 213 selfloop transitions, 92 changer transitions 0/310 dead transitions. [2024-06-28 04:23:59,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 310 transitions, 3885 flow [2024-06-28 04:23:59,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:59,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:59,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 232 transitions. [2024-06-28 04:23:59,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461538461538462 [2024-06-28 04:23:59,007 INFO L175 Difference]: Start difference. First operand has 149 places, 218 transitions, 2474 flow. Second operand 10 states and 232 transitions. [2024-06-28 04:23:59,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 310 transitions, 3885 flow [2024-06-28 04:23:59,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 310 transitions, 3736 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-28 04:23:59,683 INFO L231 Difference]: Finished difference. Result has 158 places, 245 transitions, 2963 flow [2024-06-28 04:23:59,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2325, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2963, PETRI_PLACES=158, PETRI_TRANSITIONS=245} [2024-06-28 04:23:59,683 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 103 predicate places. [2024-06-28 04:23:59,684 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 245 transitions, 2963 flow [2024-06-28 04:23:59,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:59,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:59,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:59,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 04:23:59,684 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:23:59,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:59,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1288478727, now seen corresponding path program 2 times [2024-06-28 04:23:59,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:59,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325504003] [2024-06-28 04:23:59,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:59,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:02,886 INFO 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 04:24:02,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:02,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325504003] [2024-06-28 04:24:02,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325504003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:02,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:02,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:24:02,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212127248] [2024-06-28 04:24:02,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:02,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:24:02,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:02,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:24:02,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:24:02,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:24:02,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 245 transitions, 2963 flow. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:02,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:02,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:24:02,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:07,682 INFO L124 PetriNetUnfolderBase]: 11981/16352 cut-off events. [2024-06-28 04:24:07,682 INFO L125 PetriNetUnfolderBase]: For 493655/493655 co-relation queries the response was YES. [2024-06-28 04:24:07,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113880 conditions, 16352 events. 11981/16352 cut-off events. For 493655/493655 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 85450 event pairs, 4022 based on Foata normal form. 32/16380 useless extension candidates. Maximal degree in co-relation 113807. Up to 14700 conditions per place. [2024-06-28 04:24:07,813 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 224 selfloop transitions, 108 changer transitions 0/337 dead transitions. [2024-06-28 04:24:07,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 337 transitions, 4548 flow [2024-06-28 04:24:07,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:24:07,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:24:07,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 249 transitions. [2024-06-28 04:24:07,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4353146853146853 [2024-06-28 04:24:07,814 INFO L175 Difference]: Start difference. First operand has 158 places, 245 transitions, 2963 flow. Second operand 11 states and 249 transitions. [2024-06-28 04:24:07,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 337 transitions, 4548 flow [2024-06-28 04:24:08,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 337 transitions, 4366 flow, removed 70 selfloop flow, removed 4 redundant places. [2024-06-28 04:24:08,475 INFO L231 Difference]: Finished difference. Result has 166 places, 275 transitions, 3567 flow [2024-06-28 04:24:08,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2813, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3567, PETRI_PLACES=166, PETRI_TRANSITIONS=275} [2024-06-28 04:24:08,476 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 111 predicate places. [2024-06-28 04:24:08,476 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 275 transitions, 3567 flow [2024-06-28 04:24:08,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:08,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:08,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:24:08,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 04:24:08,477 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:24:08,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:08,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1198433816, now seen corresponding path program 4 times [2024-06-28 04:24:08,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:08,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029138628] [2024-06-28 04:24:08,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:08,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:11,874 INFO 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 04:24:11,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:11,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029138628] [2024-06-28 04:24:11,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029138628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:11,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:11,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:24:11,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395561437] [2024-06-28 04:24:11,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:11,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:24:11,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:11,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:24:11,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:24:11,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:24:11,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 275 transitions, 3567 flow. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:11,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:11,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:24:11,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:15,840 INFO L124 PetriNetUnfolderBase]: 11967/16346 cut-off events. [2024-06-28 04:24:15,841 INFO L125 PetriNetUnfolderBase]: For 528838/528838 co-relation queries the response was YES. [2024-06-28 04:24:15,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118534 conditions, 16346 events. 11967/16346 cut-off events. For 528838/528838 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 85918 event pairs, 4410 based on Foata normal form. 4/16346 useless extension candidates. Maximal degree in co-relation 118458. Up to 15991 conditions per place. [2024-06-28 04:24:16,017 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 262 selfloop transitions, 38 changer transitions 0/305 dead transitions. [2024-06-28 04:24:16,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 305 transitions, 4239 flow [2024-06-28 04:24:16,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:24:16,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:24:16,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-06-28 04:24:16,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175824175824176 [2024-06-28 04:24:16,019 INFO L175 Difference]: Start difference. First operand has 166 places, 275 transitions, 3567 flow. Second operand 7 states and 152 transitions. [2024-06-28 04:24:16,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 305 transitions, 4239 flow [2024-06-28 04:24:17,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 305 transitions, 3977 flow, removed 103 selfloop flow, removed 5 redundant places. [2024-06-28 04:24:17,015 INFO L231 Difference]: Finished difference. Result has 168 places, 275 transitions, 3391 flow [2024-06-28 04:24:17,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3305, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3391, PETRI_PLACES=168, PETRI_TRANSITIONS=275} [2024-06-28 04:24:17,015 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 113 predicate places. [2024-06-28 04:24:17,016 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 275 transitions, 3391 flow [2024-06-28 04:24:17,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:17,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:17,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:24:17,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 04:24:17,016 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:24:17,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:17,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1198433475, now seen corresponding path program 3 times [2024-06-28 04:24:17,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:17,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331097580] [2024-06-28 04:24:17,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:17,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:20,559 INFO 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 04:24:20,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:20,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331097580] [2024-06-28 04:24:20,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331097580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:20,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:20,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:24:20,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107828074] [2024-06-28 04:24:20,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:20,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:24:20,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:20,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:24:20,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:24:20,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:24:20,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 275 transitions, 3391 flow. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:20,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:20,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:24:20,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:24,928 INFO L124 PetriNetUnfolderBase]: 11895/16246 cut-off events. [2024-06-28 04:24:24,928 INFO L125 PetriNetUnfolderBase]: For 536338/536338 co-relation queries the response was YES. [2024-06-28 04:24:24,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116112 conditions, 16246 events. 11895/16246 cut-off events. For 536338/536338 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 84769 event pairs, 4052 based on Foata normal form. 32/16274 useless extension candidates. Maximal degree in co-relation 116034. Up to 14650 conditions per place. [2024-06-28 04:24:25,089 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 216 selfloop transitions, 102 changer transitions 0/323 dead transitions. [2024-06-28 04:24:25,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 323 transitions, 4329 flow [2024-06-28 04:24:25,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:24:25,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:24:25,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 205 transitions. [2024-06-28 04:24:25,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43803418803418803 [2024-06-28 04:24:25,091 INFO L175 Difference]: Start difference. First operand has 168 places, 275 transitions, 3391 flow. Second operand 9 states and 205 transitions. [2024-06-28 04:24:25,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 323 transitions, 4329 flow [2024-06-28 04:24:26,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 323 transitions, 4124 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 04:24:26,004 INFO L231 Difference]: Finished difference. Result has 170 places, 275 transitions, 3422 flow [2024-06-28 04:24:26,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3195, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3422, PETRI_PLACES=170, PETRI_TRANSITIONS=275} [2024-06-28 04:24:26,005 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 115 predicate places. [2024-06-28 04:24:26,005 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 275 transitions, 3422 flow [2024-06-28 04:24:26,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:26,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:26,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:24:26,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 04:24:26,005 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:24:26,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:26,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1198218149, now seen corresponding path program 1 times [2024-06-28 04:24:26,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:26,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066791475] [2024-06-28 04:24:26,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:26,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:30,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:30,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:30,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066791475] [2024-06-28 04:24:30,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066791475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:30,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:30,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:24:30,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217355957] [2024-06-28 04:24:30,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:30,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:24:30,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:30,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:24:30,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:24:30,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:24:30,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 275 transitions, 3422 flow. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 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 04:24:30,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:30,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:24:30,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:35,432 INFO L124 PetriNetUnfolderBase]: 12491/17088 cut-off events. [2024-06-28 04:24:35,433 INFO L125 PetriNetUnfolderBase]: For 569661/569661 co-relation queries the response was YES. [2024-06-28 04:24:35,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121482 conditions, 17088 events. 12491/17088 cut-off events. For 569661/569661 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 90349 event pairs, 4217 based on Foata normal form. 80/17164 useless extension candidates. Maximal degree in co-relation 121403. Up to 15828 conditions per place. [2024-06-28 04:24:35,687 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 258 selfloop transitions, 62 changer transitions 0/325 dead transitions. [2024-06-28 04:24:35,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 325 transitions, 4410 flow [2024-06-28 04:24:35,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:24:35,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:24:35,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 199 transitions. [2024-06-28 04:24:35,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252136752136752 [2024-06-28 04:24:35,694 INFO L175 Difference]: Start difference. First operand has 170 places, 275 transitions, 3422 flow. Second operand 9 states and 199 transitions. [2024-06-28 04:24:35,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 325 transitions, 4410 flow [2024-06-28 04:24:36,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 325 transitions, 4206 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 04:24:36,291 INFO L231 Difference]: Finished difference. Result has 171 places, 277 transitions, 3426 flow [2024-06-28 04:24:36,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3218, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3426, PETRI_PLACES=171, PETRI_TRANSITIONS=277} [2024-06-28 04:24:36,291 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 116 predicate places. [2024-06-28 04:24:36,291 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 277 transitions, 3426 flow [2024-06-28 04:24:36,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 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 04:24:36,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:36,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:24:36,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 04:24:36,292 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:24:36,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:36,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1092782333, now seen corresponding path program 4 times [2024-06-28 04:24:36,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:36,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128423057] [2024-06-28 04:24:36,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:36,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:39,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:39,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:39,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128423057] [2024-06-28 04:24:39,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128423057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:39,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:39,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:24:39,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563115407] [2024-06-28 04:24:39,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:39,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:24:39,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:39,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:24:39,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:24:39,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:24:39,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 277 transitions, 3426 flow. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:39,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:39,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:24:39,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:44,134 INFO L124 PetriNetUnfolderBase]: 12867/17619 cut-off events. [2024-06-28 04:24:44,134 INFO L125 PetriNetUnfolderBase]: For 586877/586888 co-relation queries the response was YES. [2024-06-28 04:24:44,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126110 conditions, 17619 events. 12867/17619 cut-off events. For 586877/586888 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 93882 event pairs, 4039 based on Foata normal form. 23/17639 useless extension candidates. Maximal degree in co-relation 126030. Up to 14816 conditions per place. [2024-06-28 04:24:44,277 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 251 selfloop transitions, 119 changer transitions 0/375 dead transitions. [2024-06-28 04:24:44,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 375 transitions, 5256 flow [2024-06-28 04:24:44,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:24:44,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:24:44,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 04:24:44,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47836538461538464 [2024-06-28 04:24:44,279 INFO L175 Difference]: Start difference. First operand has 171 places, 277 transitions, 3426 flow. Second operand 8 states and 199 transitions. [2024-06-28 04:24:44,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 375 transitions, 5256 flow [2024-06-28 04:24:45,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 375 transitions, 5112 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 04:24:45,031 INFO L231 Difference]: Finished difference. Result has 175 places, 308 transitions, 4123 flow [2024-06-28 04:24:45,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3288, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4123, PETRI_PLACES=175, PETRI_TRANSITIONS=308} [2024-06-28 04:24:45,032 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 120 predicate places. [2024-06-28 04:24:45,032 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 308 transitions, 4123 flow [2024-06-28 04:24:45,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:45,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:45,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:24:45,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 04:24:45,033 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:24:45,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:45,033 INFO L85 PathProgramCache]: Analyzing trace with hash -467299717, now seen corresponding path program 5 times [2024-06-28 04:24:45,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:45,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200407987] [2024-06-28 04:24:45,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:45,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:48,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:48,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:48,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200407987] [2024-06-28 04:24:48,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200407987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:48,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:48,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:24:48,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526188980] [2024-06-28 04:24:48,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:48,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:24:48,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:48,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:24:48,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:24:48,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:24:48,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 308 transitions, 4123 flow. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:48,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:48,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:24:48,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:54,389 INFO L124 PetriNetUnfolderBase]: 13663/18600 cut-off events. [2024-06-28 04:24:54,389 INFO L125 PetriNetUnfolderBase]: For 678709/678709 co-relation queries the response was YES. [2024-06-28 04:24:54,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140462 conditions, 18600 events. 13663/18600 cut-off events. For 678709/678709 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 98440 event pairs, 4158 based on Foata normal form. 32/18628 useless extension candidates. Maximal degree in co-relation 140378. Up to 15604 conditions per place. [2024-06-28 04:24:54,558 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 250 selfloop transitions, 171 changer transitions 0/426 dead transitions. [2024-06-28 04:24:54,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 426 transitions, 6451 flow [2024-06-28 04:24:54,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:24:54,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:24:54,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 265 transitions. [2024-06-28 04:24:54,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4632867132867133 [2024-06-28 04:24:54,560 INFO L175 Difference]: Start difference. First operand has 175 places, 308 transitions, 4123 flow. Second operand 11 states and 265 transitions. [2024-06-28 04:24:54,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 426 transitions, 6451 flow [2024-06-28 04:24:55,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 426 transitions, 6265 flow, removed 92 selfloop flow, removed 1 redundant places. [2024-06-28 04:24:55,504 INFO L231 Difference]: Finished difference. Result has 186 places, 346 transitions, 5131 flow [2024-06-28 04:24:55,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3967, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5131, PETRI_PLACES=186, PETRI_TRANSITIONS=346} [2024-06-28 04:24:55,505 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 131 predicate places. [2024-06-28 04:24:55,505 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 346 transitions, 5131 flow [2024-06-28 04:24:55,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:55,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:55,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:24:55,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 04:24:55,506 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:24:55,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:55,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1211301215, now seen corresponding path program 6 times [2024-06-28 04:24:55,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:55,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037016659] [2024-06-28 04:24:55,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:55,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:58,859 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 04:24:58,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:58,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037016659] [2024-06-28 04:24:58,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037016659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:58,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:58,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:24:58,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058499633] [2024-06-28 04:24:58,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:58,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:24:58,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:58,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:24:58,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:24:58,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:24:58,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 346 transitions, 5131 flow. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:58,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:58,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:24:58,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:03,596 INFO L124 PetriNetUnfolderBase]: 13627/18552 cut-off events. [2024-06-28 04:25:03,596 INFO L125 PetriNetUnfolderBase]: For 708978/708978 co-relation queries the response was YES. [2024-06-28 04:25:03,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144601 conditions, 18552 events. 13627/18552 cut-off events. For 708978/708978 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 98740 event pairs, 4836 based on Foata normal form. 16/18564 useless extension candidates. Maximal degree in co-relation 144513. Up to 18047 conditions per place. [2024-06-28 04:25:03,789 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 340 selfloop transitions, 46 changer transitions 0/391 dead transitions. [2024-06-28 04:25:03,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 391 transitions, 6108 flow [2024-06-28 04:25:03,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:25:03,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:25:03,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 193 transitions. [2024-06-28 04:25:03,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41239316239316237 [2024-06-28 04:25:03,791 INFO L175 Difference]: Start difference. First operand has 186 places, 346 transitions, 5131 flow. Second operand 9 states and 193 transitions. [2024-06-28 04:25:03,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 391 transitions, 6108 flow [2024-06-28 04:25:04,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 391 transitions, 5758 flow, removed 127 selfloop flow, removed 5 redundant places. [2024-06-28 04:25:04,797 INFO L231 Difference]: Finished difference. Result has 191 places, 348 transitions, 4934 flow [2024-06-28 04:25:04,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4789, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4934, PETRI_PLACES=191, PETRI_TRANSITIONS=348} [2024-06-28 04:25:04,798 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 136 predicate places. [2024-06-28 04:25:04,798 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 348 transitions, 4934 flow [2024-06-28 04:25:04,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:25:04,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:04,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:25:04,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 04:25:04,799 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:25:04,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:04,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1211687165, now seen corresponding path program 7 times [2024-06-28 04:25:04,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:04,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973927884] [2024-06-28 04:25:04,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:04,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:08,376 INFO 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 04:25:08,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:08,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973927884] [2024-06-28 04:25:08,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973927884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:08,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:08,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:25:08,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684867973] [2024-06-28 04:25:08,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:08,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:25:08,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:08,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:25:08,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:25:08,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:25:08,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 348 transitions, 4934 flow. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:25:08,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:08,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:25:08,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:13,307 INFO L124 PetriNetUnfolderBase]: 13959/18978 cut-off events. [2024-06-28 04:25:13,307 INFO L125 PetriNetUnfolderBase]: For 729194/729194 co-relation queries the response was YES. [2024-06-28 04:25:13,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145728 conditions, 18978 events. 13959/18978 cut-off events. For 729194/729194 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 100521 event pairs, 4332 based on Foata normal form. 16/18990 useless extension candidates. Maximal degree in co-relation 145637. Up to 15816 conditions per place. [2024-06-28 04:25:13,516 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 238 selfloop transitions, 170 changer transitions 0/413 dead transitions. [2024-06-28 04:25:13,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 413 transitions, 6418 flow [2024-06-28 04:25:13,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:25:13,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:25:13,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 04:25:13,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46634615384615385 [2024-06-28 04:25:13,519 INFO L175 Difference]: Start difference. First operand has 191 places, 348 transitions, 4934 flow. Second operand 8 states and 194 transitions. [2024-06-28 04:25:13,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 413 transitions, 6418 flow [2024-06-28 04:25:14,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 413 transitions, 6230 flow, removed 56 selfloop flow, removed 5 redundant places. [2024-06-28 04:25:14,693 INFO L231 Difference]: Finished difference. Result has 194 places, 361 transitions, 5299 flow [2024-06-28 04:25:14,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4746, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5299, PETRI_PLACES=194, PETRI_TRANSITIONS=361} [2024-06-28 04:25:14,694 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 139 predicate places. [2024-06-28 04:25:14,694 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 361 transitions, 5299 flow [2024-06-28 04:25:14,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:25:14,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:14,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:25:14,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 04:25:14,695 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:25:14,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:14,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1654060879, now seen corresponding path program 8 times [2024-06-28 04:25:14,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:14,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572947395] [2024-06-28 04:25:14,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:14,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat