./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix023_tso.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/mix023_tso.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/mix023_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix023_tso.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 03:10:58,959 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:10:59,017 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:10:59,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:10:59,022 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:10:59,051 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:10:59,051 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:10:59,051 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:10:59,052 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:10:59,055 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:10:59,055 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:10:59,055 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:10:59,056 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:10:59,057 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:10:59,057 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:10:59,057 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:10:59,057 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:10:59,057 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:10:59,057 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:10:59,058 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:10:59,058 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:10:59,059 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:10:59,059 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:10:59,059 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:10:59,059 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:10:59,059 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:10:59,059 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:10:59,060 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:10:59,060 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:10:59,060 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:10:59,061 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:10:59,061 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:10:59,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:10:59,061 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:10:59,061 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:10:59,062 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:10:59,062 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:10:59,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:10:59,062 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:10:59,062 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:10:59,062 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:10:59,062 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:10:59,062 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:10:59,063 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:10:59,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:10:59,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:10:59,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:10:59,284 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:10:59,285 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:10:59,286 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix023_tso.yml/witness.yml [2024-06-28 03:10:59,518 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:10:59,518 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:10:59,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix023_tso.i [2024-06-28 03:11:00,603 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:11:00,783 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:11:00,784 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix023_tso.i [2024-06-28 03:11:00,806 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e63a372c/ba8e6fd149bb48a3bc5103f2b5681409/FLAGdedb26a93 [2024-06-28 03:11:00,817 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e63a372c/ba8e6fd149bb48a3bc5103f2b5681409 [2024-06-28 03:11:00,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:11:00,818 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:11:00,819 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:11:00,819 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:11:00,830 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:11:00,830 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:10:59" (1/2) ... [2024-06-28 03:11:00,831 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@704b5740 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:11:00, skipping insertion in model container [2024-06-28 03:11:00,831 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:10:59" (1/2) ... [2024-06-28 03:11:00,832 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@17c3eca1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:11:00, skipping insertion in model container [2024-06-28 03:11:00,833 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:11:00" (2/2) ... [2024-06-28 03:11:00,833 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@704b5740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:11:00, skipping insertion in model container [2024-06-28 03:11:00,833 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:11:00" (2/2) ... [2024-06-28 03:11:00,834 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:11:01,004 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:11:01,005 INFO L97 edCorrectnessWitness]: Location invariant before [L927-L927] (((((((((((((((((((((((((((((((((((! multithreaded || z$r_buff1_thd2 == (_Bool)0) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_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$r_buff1_thd3 == (_Bool)0) && x$r_buff1_thd4 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 2)) && (z$w_buff1 == 0 || z$w_buff1 == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((z == 0 || z == 1) || z == 2)) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 2)) [2024-06-28 03:11:01,006 INFO L97 edCorrectnessWitness]: Location invariant before [L928-L928] (((((((((((((((((((((((((((((((((((! multithreaded || z$r_buff1_thd2 == (_Bool)0) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_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$r_buff1_thd3 == (_Bool)0) && x$r_buff1_thd4 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 2)) && (z$w_buff1 == 0 || z$w_buff1 == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((z == 0 || z == 1) || z == 2)) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 2)) [2024-06-28 03:11:01,006 INFO L97 edCorrectnessWitness]: Location invariant before [L925-L925] (((((((((((((((((((((((((((((((((((! multithreaded || z$r_buff1_thd2 == (_Bool)0) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_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$r_buff1_thd3 == (_Bool)0) && x$r_buff1_thd4 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 2)) && (z$w_buff1 == 0 || z$w_buff1 == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((z == 0 || z == 1) || z == 2)) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 2)) [2024-06-28 03:11:01,006 INFO L97 edCorrectnessWitness]: Location invariant before [L923-L923] (((((((((((((((((((((((((((((((((((! multithreaded || z$r_buff1_thd2 == (_Bool)0) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_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$r_buff1_thd3 == (_Bool)0) && x$r_buff1_thd4 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 2)) && (z$w_buff1 == 0 || z$w_buff1 == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((z == 0 || z == 1) || z == 2)) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 2)) [2024-06-28 03:11:01,007 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:11:01,007 INFO L106 edCorrectnessWitness]: ghost_update [L921-L921] multithreaded = 1; [2024-06-28 03:11:01,046 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:11:01,393 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:11:01,400 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 03:11:01,570 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:11:01,614 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:11:01,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:11:01 WrapperNode [2024-06-28 03:11:01,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:11:01,616 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:11:01,616 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:11:01,616 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:11:01,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:11:01" (1/1) ... [2024-06-28 03:11:01,651 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:11:01" (1/1) ... [2024-06-28 03:11:01,703 INFO L138 Inliner]: procedures = 176, calls = 57, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 286 [2024-06-28 03:11:01,704 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:11:01,705 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:11:01,705 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:11:01,705 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:11:01,714 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:11:01" (1/1) ... [2024-06-28 03:11:01,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:11:01" (1/1) ... [2024-06-28 03:11:01,718 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:11:01" (1/1) ... [2024-06-28 03:11:01,746 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 03:11:01,746 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:11:01" (1/1) ... [2024-06-28 03:11:01,746 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:11:01" (1/1) ... [2024-06-28 03:11:01,778 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:11:01" (1/1) ... [2024-06-28 03:11:01,785 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:11:01" (1/1) ... [2024-06-28 03:11:01,788 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:11:01" (1/1) ... [2024-06-28 03:11:01,790 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:11:01" (1/1) ... [2024-06-28 03:11:01,793 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:11:01,794 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:11:01,794 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:11:01,794 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:11:01,794 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:11:01" (1/1) ... [2024-06-28 03:11:01,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:11:01,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:11:01,817 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 03:11:01,823 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 03:11:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:11:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:11:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:11:01,843 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:11:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:11:01,843 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:11:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:11:01,843 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:11:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 03:11:01,844 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 03:11:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:11:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:11:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:11:01,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:11:01,845 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 03:11:01,954 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:11:01,955 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:11:02,444 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:11:02,444 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:11:02,661 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:11:02,661 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:11:02,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:11:02 BoogieIcfgContainer [2024-06-28 03:11:02,662 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:11:02,663 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:11:02,663 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:11:02,665 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:11:02,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:10:59" (1/4) ... [2024-06-28 03:11:02,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf9a15f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:11:02, skipping insertion in model container [2024-06-28 03:11:02,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:11:00" (2/4) ... [2024-06-28 03:11:02,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf9a15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:11:02, skipping insertion in model container [2024-06-28 03:11:02,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:11:01" (3/4) ... [2024-06-28 03:11:02,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf9a15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:11:02, skipping insertion in model container [2024-06-28 03:11:02,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:11:02" (4/4) ... [2024-06-28 03:11:02,668 INFO L112 eAbstractionObserver]: Analyzing ICFG mix023_tso.i [2024-06-28 03:11:02,682 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:11:02,682 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 03:11:02,683 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:11:02,742 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:11:02,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-28 03:11:02,800 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-28 03:11:02,800 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:11:02,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 0/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 90 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:11:02,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-28 03:11:02,805 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-28 03:11:02,817 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:11:02,823 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;@c1cd543, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:11:02,823 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 03:11:02,828 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:11:02,829 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 03:11:02,829 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:11:02,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:02,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:11:02,830 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 03:11:02,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:02,834 INFO L85 PathProgramCache]: Analyzing trace with hash 625455698, now seen corresponding path program 1 times [2024-06-28 03:11:02,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:02,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014055163] [2024-06-28 03:11:02,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:02,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:04,403 INFO 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 03:11:04,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:04,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014055163] [2024-06-28 03:11:04,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014055163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:04,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:04,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:11:04,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161264062] [2024-06-28 03:11:04,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:04,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:11:04,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:04,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:11:04,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:11:04,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:11:04,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 03:11:04,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:04,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:11:04,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:06,943 INFO L124 PetriNetUnfolderBase]: 14075/19405 cut-off events. [2024-06-28 03:11:06,943 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2024-06-28 03:11:06,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38921 conditions, 19405 events. 14075/19405 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 107023 event pairs, 11070 based on Foata normal form. 1/18891 useless extension candidates. Maximal degree in co-relation 38908. Up to 18981 conditions per place. [2024-06-28 03:11:07,130 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 45 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-28 03:11:07,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 235 flow [2024-06-28 03:11:07,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:11:07,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:11:07,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-06-28 03:11:07,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5849056603773585 [2024-06-28 03:11:07,140 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 93 transitions. [2024-06-28 03:11:07,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 235 flow [2024-06-28 03:11:07,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 228 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 03:11:07,145 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-28 03:11:07,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-28 03:11:07,150 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-28 03:11:07,150 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-28 03:11:07,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 03:11:07,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:07,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:07,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:11:07,152 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 03:11:07,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:07,152 INFO L85 PathProgramCache]: Analyzing trace with hash -232192257, now seen corresponding path program 1 times [2024-06-28 03:11:07,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:07,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917970695] [2024-06-28 03:11:07,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:07,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:08,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:08,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:08,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917970695] [2024-06-28 03:11:08,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917970695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:08,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:08,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:11:08,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169952660] [2024-06-28 03:11:08,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:08,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:11:08,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:08,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:11:08,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:11:08,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:11:08,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 03:11:08,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:08,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:11:08,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:11,191 INFO L124 PetriNetUnfolderBase]: 16117/21731 cut-off events. [2024-06-28 03:11:11,191 INFO L125 PetriNetUnfolderBase]: For 3947/3947 co-relation queries the response was YES. [2024-06-28 03:11:11,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49104 conditions, 21731 events. 16117/21731 cut-off events. For 3947/3947 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 114951 event pairs, 11693 based on Foata normal form. 4/21727 useless extension candidates. Maximal degree in co-relation 49092. Up to 21646 conditions per place. [2024-06-28 03:11:11,310 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 56 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-28 03:11:11,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 329 flow [2024-06-28 03:11:11,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:11:11,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:11:11,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-06-28 03:11:11,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5518867924528302 [2024-06-28 03:11:11,315 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 117 transitions. [2024-06-28 03:11:11,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 329 flow [2024-06-28 03:11:11,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:11:11,331 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-28 03:11:11,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-28 03:11:11,332 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-28 03:11:11,333 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-28 03:11:11,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 03:11:11,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:11,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:11,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:11:11,335 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:11:11,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:11,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1391976059, now seen corresponding path program 1 times [2024-06-28 03:11:11,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:11,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870015509] [2024-06-28 03:11:11,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:11,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:12,722 INFO 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 03:11:12,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:12,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870015509] [2024-06-28 03:11:12,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870015509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:12,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:12,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:11:12,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994200470] [2024-06-28 03:11:12,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:12,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:11:12,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:12,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:11:12,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:11:12,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:11:12,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 03:11:12,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:12,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:11:12,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:15,034 INFO L124 PetriNetUnfolderBase]: 16097/21705 cut-off events. [2024-06-28 03:11:15,035 INFO L125 PetriNetUnfolderBase]: For 11213/11213 co-relation queries the response was YES. [2024-06-28 03:11:15,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54169 conditions, 21705 events. 16097/21705 cut-off events. For 11213/11213 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 115178 event pairs, 9531 based on Foata normal form. 8/21707 useless extension candidates. Maximal degree in co-relation 54155. Up to 21576 conditions per place. [2024-06-28 03:11:15,133 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 67 selfloop transitions, 13 changer transitions 0/86 dead transitions. [2024-06-28 03:11:15,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 86 transitions, 441 flow [2024-06-28 03:11:15,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:11:15,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:11:15,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions. [2024-06-28 03:11:15,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5433962264150943 [2024-06-28 03:11:15,135 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 5 states and 144 transitions. [2024-06-28 03:11:15,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 86 transitions, 441 flow [2024-06-28 03:11:15,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 86 transitions, 422 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 03:11:15,139 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 229 flow [2024-06-28 03:11:15,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-06-28 03:11:15,139 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2024-06-28 03:11:15,140 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 229 flow [2024-06-28 03:11:15,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 03:11:15,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:15,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:15,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:11:15,140 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:11:15,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:15,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1480692920, now seen corresponding path program 1 times [2024-06-28 03:11:15,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:15,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465857242] [2024-06-28 03:11:15,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:15,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:17,583 INFO 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 03:11:17,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:17,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465857242] [2024-06-28 03:11:17,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465857242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:17,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:17,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:11:17,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158171076] [2024-06-28 03:11:17,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:17,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:11:17,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:17,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:11:17,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:11:17,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:11:17,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 229 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 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 03:11:17,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:17,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:11:17,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:20,454 INFO L124 PetriNetUnfolderBase]: 16081/21679 cut-off events. [2024-06-28 03:11:20,455 INFO L125 PetriNetUnfolderBase]: For 21720/21720 co-relation queries the response was YES. [2024-06-28 03:11:20,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59193 conditions, 21679 events. 16081/21679 cut-off events. For 21720/21720 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 114830 event pairs, 8286 based on Foata normal form. 8/21679 useless extension candidates. Maximal degree in co-relation 59178. Up to 21510 conditions per place. [2024-06-28 03:11:20,599 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 74 selfloop transitions, 16 changer transitions 0/96 dead transitions. [2024-06-28 03:11:20,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 96 transitions, 525 flow [2024-06-28 03:11:20,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:11:20,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:11:20,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2024-06-28 03:11:20,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5220125786163522 [2024-06-28 03:11:20,601 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 229 flow. Second operand 6 states and 166 transitions. [2024-06-28 03:11:20,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 96 transitions, 525 flow [2024-06-28 03:11:20,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 96 transitions, 492 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 03:11:20,606 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 260 flow [2024-06-28 03:11:20,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2024-06-28 03:11:20,607 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-06-28 03:11:20,607 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 260 flow [2024-06-28 03:11:20,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 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 03:11:20,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:20,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:20,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:11:20,608 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 03:11:20,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:20,608 INFO L85 PathProgramCache]: Analyzing trace with hash -2114344531, now seen corresponding path program 1 times [2024-06-28 03:11:20,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:20,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914311526] [2024-06-28 03:11:20,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:20,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:22,107 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 03:11:22,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:22,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914311526] [2024-06-28 03:11:22,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914311526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:22,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:22,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:11:22,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333683082] [2024-06-28 03:11:22,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:22,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:11:22,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:22,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:11:22,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:11:22,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-28 03:11:22,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 260 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 03:11:22,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:22,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-28 03:11:22,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:24,299 INFO L124 PetriNetUnfolderBase]: 14020/19441 cut-off events. [2024-06-28 03:11:24,299 INFO L125 PetriNetUnfolderBase]: For 31246/31246 co-relation queries the response was YES. [2024-06-28 03:11:24,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56269 conditions, 19441 events. 14020/19441 cut-off events. For 31246/31246 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 109282 event pairs, 10279 based on Foata normal form. 3/19190 useless extension candidates. Maximal degree in co-relation 56252. Up to 18888 conditions per place. [2024-06-28 03:11:24,416 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 61 selfloop transitions, 12 changer transitions 0/79 dead transitions. [2024-06-28 03:11:24,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 79 transitions, 484 flow [2024-06-28 03:11:24,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:11:24,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:11:24,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-28 03:11:24,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119496855345912 [2024-06-28 03:11:24,418 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 260 flow. Second operand 6 states and 131 transitions. [2024-06-28 03:11:24,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 79 transitions, 484 flow [2024-06-28 03:11:24,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 79 transitions, 436 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 03:11:24,425 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 296 flow [2024-06-28 03:11:24,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=296, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-06-28 03:11:24,428 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 10 predicate places. [2024-06-28 03:11:24,428 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 296 flow [2024-06-28 03:11:24,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 03:11:24,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:24,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:24,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:11:24,429 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 03:11:24,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:24,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1085313421, now seen corresponding path program 1 times [2024-06-28 03:11:24,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:24,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937423661] [2024-06-28 03:11:24,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:24,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:26,319 INFO 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 03:11:26,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:26,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937423661] [2024-06-28 03:11:26,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937423661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:26,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:26,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:11:26,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063050151] [2024-06-28 03:11:26,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:26,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:11:26,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:26,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:11:26,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:11:26,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-28 03:11:26,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 296 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:26,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:26,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-28 03:11:26,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:28,581 INFO L124 PetriNetUnfolderBase]: 14002/19387 cut-off events. [2024-06-28 03:11:28,581 INFO L125 PetriNetUnfolderBase]: For 44139/44139 co-relation queries the response was YES. [2024-06-28 03:11:28,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60497 conditions, 19387 events. 14002/19387 cut-off events. For 44139/44139 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 108579 event pairs, 9987 based on Foata normal form. 6/19139 useless extension candidates. Maximal degree in co-relation 60477. Up to 18834 conditions per place. [2024-06-28 03:11:28,698 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 70 selfloop transitions, 15 changer transitions 0/91 dead transitions. [2024-06-28 03:11:28,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 91 transitions, 560 flow [2024-06-28 03:11:28,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:11:28,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:11:28,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 03:11:28,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44654088050314467 [2024-06-28 03:11:28,700 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 296 flow. Second operand 6 states and 142 transitions. [2024-06-28 03:11:28,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 91 transitions, 560 flow [2024-06-28 03:11:28,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 91 transitions, 525 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 03:11:28,706 INFO L231 Difference]: Finished difference. Result has 69 places, 67 transitions, 342 flow [2024-06-28 03:11:28,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=69, PETRI_TRANSITIONS=67} [2024-06-28 03:11:28,707 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2024-06-28 03:11:28,707 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 342 flow [2024-06-28 03:11:28,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:28,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:28,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:28,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:11:28,708 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:11:28,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:28,708 INFO L85 PathProgramCache]: Analyzing trace with hash 404025986, now seen corresponding path program 1 times [2024-06-28 03:11:28,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:28,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905075963] [2024-06-28 03:11:28,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:28,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:30,115 INFO 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 03:11:30,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:30,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905075963] [2024-06-28 03:11:30,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905075963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:30,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:30,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:11:30,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858315828] [2024-06-28 03:11:30,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:30,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:11:30,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:30,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:11:30,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:11:30,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-28 03:11:30,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 342 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 03:11:30,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:30,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-28 03:11:30,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:32,616 INFO L124 PetriNetUnfolderBase]: 16099/21809 cut-off events. [2024-06-28 03:11:32,617 INFO L125 PetriNetUnfolderBase]: For 70239/70239 co-relation queries the response was YES. [2024-06-28 03:11:32,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73411 conditions, 21809 events. 16099/21809 cut-off events. For 70239/70239 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 117330 event pairs, 11128 based on Foata normal form. 3/21810 useless extension candidates. Maximal degree in co-relation 73390. Up to 21597 conditions per place. [2024-06-28 03:11:32,747 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 82 selfloop transitions, 22 changer transitions 0/109 dead transitions. [2024-06-28 03:11:32,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 109 transitions, 696 flow [2024-06-28 03:11:32,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:11:32,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:11:32,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-28 03:11:32,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4339622641509434 [2024-06-28 03:11:32,748 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 342 flow. Second operand 7 states and 161 transitions. [2024-06-28 03:11:32,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 109 transitions, 696 flow [2024-06-28 03:11:32,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 109 transitions, 647 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 03:11:32,758 INFO L231 Difference]: Finished difference. Result has 73 places, 78 transitions, 433 flow [2024-06-28 03:11:32,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=433, PETRI_PLACES=73, PETRI_TRANSITIONS=78} [2024-06-28 03:11:32,759 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-06-28 03:11:32,759 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 78 transitions, 433 flow [2024-06-28 03:11:32,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 03:11:32,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:32,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:32,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:11:32,760 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 03:11:32,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:32,760 INFO L85 PathProgramCache]: Analyzing trace with hash -371216948, now seen corresponding path program 2 times [2024-06-28 03:11:32,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:32,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191646460] [2024-06-28 03:11:32,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:32,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:34,290 INFO 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 03:11:34,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:34,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191646460] [2024-06-28 03:11:34,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191646460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:34,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:34,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:11:34,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889052313] [2024-06-28 03:11:34,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:34,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:11:34,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:34,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:11:34,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:11:34,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-28 03:11:34,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 78 transitions, 433 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 03:11:34,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:34,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-28 03:11:34,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:36,905 INFO L124 PetriNetUnfolderBase]: 16121/21839 cut-off events. [2024-06-28 03:11:36,905 INFO L125 PetriNetUnfolderBase]: For 92460/92460 co-relation queries the response was YES. [2024-06-28 03:11:36,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78812 conditions, 21839 events. 16121/21839 cut-off events. For 92460/92460 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 117519 event pairs, 11128 based on Foata normal form. 3/21840 useless extension candidates. Maximal degree in co-relation 78789. Up to 21612 conditions per place. [2024-06-28 03:11:37,050 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 79 selfloop transitions, 23 changer transitions 0/107 dead transitions. [2024-06-28 03:11:37,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 107 transitions, 759 flow [2024-06-28 03:11:37,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:11:37,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:11:37,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-28 03:11:37,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4371069182389937 [2024-06-28 03:11:37,051 INFO L175 Difference]: Start difference. First operand has 73 places, 78 transitions, 433 flow. Second operand 6 states and 139 transitions. [2024-06-28 03:11:37,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 107 transitions, 759 flow [2024-06-28 03:11:37,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 107 transitions, 696 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 03:11:37,070 INFO L231 Difference]: Finished difference. Result has 75 places, 82 transitions, 484 flow [2024-06-28 03:11:37,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=484, PETRI_PLACES=75, PETRI_TRANSITIONS=82} [2024-06-28 03:11:37,071 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2024-06-28 03:11:37,071 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 82 transitions, 484 flow [2024-06-28 03:11:37,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 03:11:37,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:37,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:37,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:11:37,071 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 03:11:37,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:37,072 INFO L85 PathProgramCache]: Analyzing trace with hash -365503028, now seen corresponding path program 3 times [2024-06-28 03:11:37,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:37,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139818158] [2024-06-28 03:11:37,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:37,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:38,606 INFO 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 03:11:38,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:38,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139818158] [2024-06-28 03:11:38,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139818158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:38,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:38,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:11:38,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775900705] [2024-06-28 03:11:38,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:38,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:11:38,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:38,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:11:38,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:11:38,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-28 03:11:38,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 82 transitions, 484 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 03:11:38,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:38,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-28 03:11:38,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:41,034 INFO L124 PetriNetUnfolderBase]: 16112/21829 cut-off events. [2024-06-28 03:11:41,034 INFO L125 PetriNetUnfolderBase]: For 118541/118541 co-relation queries the response was YES. [2024-06-28 03:11:41,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83764 conditions, 21829 events. 16112/21829 cut-off events. For 118541/118541 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 117466 event pairs, 11135 based on Foata normal form. 3/21827 useless extension candidates. Maximal degree in co-relation 83740. Up to 21570 conditions per place. [2024-06-28 03:11:41,178 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 75 selfloop transitions, 29 changer transitions 0/109 dead transitions. [2024-06-28 03:11:41,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 109 transitions, 816 flow [2024-06-28 03:11:41,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:11:41,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:11:41,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-28 03:11:41,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4339622641509434 [2024-06-28 03:11:41,179 INFO L175 Difference]: Start difference. First operand has 75 places, 82 transitions, 484 flow. Second operand 6 states and 138 transitions. [2024-06-28 03:11:41,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 109 transitions, 816 flow [2024-06-28 03:11:41,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 109 transitions, 730 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 03:11:41,208 INFO L231 Difference]: Finished difference. Result has 77 places, 86 transitions, 527 flow [2024-06-28 03:11:41,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=527, PETRI_PLACES=77, PETRI_TRANSITIONS=86} [2024-06-28 03:11:41,208 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2024-06-28 03:11:41,209 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 86 transitions, 527 flow [2024-06-28 03:11:41,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 03:11:41,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:41,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:41,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:11:41,209 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 03:11:41,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:41,210 INFO L85 PathProgramCache]: Analyzing trace with hash 2037251546, now seen corresponding path program 1 times [2024-06-28 03:11:41,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:41,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157873274] [2024-06-28 03:11:41,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:41,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:42,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:42,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:42,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157873274] [2024-06-28 03:11:42,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157873274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:42,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:42,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:11:42,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446196473] [2024-06-28 03:11:42,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:42,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:11:42,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:42,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:11:42,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:11:42,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-28 03:11:42,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 86 transitions, 527 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 03:11:42,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:42,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-28 03:11:42,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:45,409 INFO L124 PetriNetUnfolderBase]: 16179/21841 cut-off events. [2024-06-28 03:11:45,409 INFO L125 PetriNetUnfolderBase]: For 113017/113033 co-relation queries the response was YES. [2024-06-28 03:11:45,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84065 conditions, 21841 events. 16179/21841 cut-off events. For 113017/113033 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 116162 event pairs, 8842 based on Foata normal form. 22/21860 useless extension candidates. Maximal degree in co-relation 84040. Up to 21624 conditions per place. [2024-06-28 03:11:45,567 INFO L140 encePairwiseOnDemand]: 37/53 looper letters, 104 selfloop transitions, 34 changer transitions 0/143 dead transitions. [2024-06-28 03:11:45,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 143 transitions, 1025 flow [2024-06-28 03:11:45,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:11:45,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:11:45,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 03:11:45,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4410377358490566 [2024-06-28 03:11:45,569 INFO L175 Difference]: Start difference. First operand has 77 places, 86 transitions, 527 flow. Second operand 8 states and 187 transitions. [2024-06-28 03:11:45,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 143 transitions, 1025 flow [2024-06-28 03:11:45,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 143 transitions, 936 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 03:11:45,589 INFO L231 Difference]: Finished difference. Result has 83 places, 101 transitions, 641 flow [2024-06-28 03:11:45,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=641, PETRI_PLACES=83, PETRI_TRANSITIONS=101} [2024-06-28 03:11:45,590 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2024-06-28 03:11:45,590 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 101 transitions, 641 flow [2024-06-28 03:11:45,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 03:11:45,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:45,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:45,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:11:45,591 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 03:11:45,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:45,591 INFO L85 PathProgramCache]: Analyzing trace with hash -361252228, now seen corresponding path program 2 times [2024-06-28 03:11:45,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:45,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009413940] [2024-06-28 03:11:45,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:45,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:47,149 INFO 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 03:11:47,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:47,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009413940] [2024-06-28 03:11:47,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009413940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:47,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:47,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:11:47,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690787167] [2024-06-28 03:11:47,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:47,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:11:47,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:47,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:11:47,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:11:47,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-28 03:11:47,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 101 transitions, 641 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 03:11:47,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:47,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-28 03:11:47,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:50,013 INFO L124 PetriNetUnfolderBase]: 16323/22022 cut-off events. [2024-06-28 03:11:50,013 INFO L125 PetriNetUnfolderBase]: For 142464/142484 co-relation queries the response was YES. [2024-06-28 03:11:50,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92280 conditions, 22022 events. 16323/22022 cut-off events. For 142464/142484 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 116661 event pairs, 8496 based on Foata normal form. 26/22046 useless extension candidates. Maximal degree in co-relation 92252. Up to 21762 conditions per place. [2024-06-28 03:11:50,163 INFO L140 encePairwiseOnDemand]: 37/53 looper letters, 107 selfloop transitions, 53 changer transitions 0/165 dead transitions. [2024-06-28 03:11:50,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 165 transitions, 1330 flow [2024-06-28 03:11:50,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:11:50,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:11:50,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 03:11:50,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44339622641509435 [2024-06-28 03:11:50,164 INFO L175 Difference]: Start difference. First operand has 83 places, 101 transitions, 641 flow. Second operand 8 states and 188 transitions. [2024-06-28 03:11:50,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 165 transitions, 1330 flow [2024-06-28 03:11:50,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 165 transitions, 1194 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-06-28 03:11:50,428 INFO L231 Difference]: Finished difference. Result has 90 places, 126 transitions, 918 flow [2024-06-28 03:11:50,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=918, PETRI_PLACES=90, PETRI_TRANSITIONS=126} [2024-06-28 03:11:50,428 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 34 predicate places. [2024-06-28 03:11:50,429 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 126 transitions, 918 flow [2024-06-28 03:11:50,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 03:11:50,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:50,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:50,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:11:50,429 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:11:50,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:50,430 INFO L85 PathProgramCache]: Analyzing trace with hash -396102862, now seen corresponding path program 1 times [2024-06-28 03:11:50,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:50,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103552632] [2024-06-28 03:11:50,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:50,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:52,320 INFO 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 03:11:52,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:52,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103552632] [2024-06-28 03:11:52,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103552632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:52,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:52,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:11:52,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357763584] [2024-06-28 03:11:52,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:52,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:11:52,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:52,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:11:52,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:11:52,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-28 03:11:52,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 126 transitions, 918 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 03:11:52,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:52,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-28 03:11:52,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:55,253 INFO L124 PetriNetUnfolderBase]: 16345/22144 cut-off events. [2024-06-28 03:11:55,253 INFO L125 PetriNetUnfolderBase]: For 187128/187140 co-relation queries the response was YES. [2024-06-28 03:11:55,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97773 conditions, 22144 events. 16345/22144 cut-off events. For 187128/187140 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 119049 event pairs, 9940 based on Foata normal form. 15/22157 useless extension candidates. Maximal degree in co-relation 97742. Up to 21918 conditions per place. [2024-06-28 03:11:55,375 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 137 selfloop transitions, 26 changer transitions 0/168 dead transitions. [2024-06-28 03:11:55,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 168 transitions, 1448 flow [2024-06-28 03:11:55,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:11:55,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:11:55,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-28 03:11:55,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42924528301886794 [2024-06-28 03:11:55,377 INFO L175 Difference]: Start difference. First operand has 90 places, 126 transitions, 918 flow. Second operand 8 states and 182 transitions. [2024-06-28 03:11:55,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 168 transitions, 1448 flow [2024-06-28 03:11:55,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 168 transitions, 1340 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-28 03:11:55,414 INFO L231 Difference]: Finished difference. Result has 95 places, 130 transitions, 951 flow [2024-06-28 03:11:55,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=951, PETRI_PLACES=95, PETRI_TRANSITIONS=130} [2024-06-28 03:11:55,414 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 39 predicate places. [2024-06-28 03:11:55,414 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 130 transitions, 951 flow [2024-06-28 03:11:55,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 03:11:55,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:55,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:55,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:11:55,415 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:11:55,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:55,416 INFO L85 PathProgramCache]: Analyzing trace with hash -2009669782, now seen corresponding path program 3 times [2024-06-28 03:11:55,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:55,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635873595] [2024-06-28 03:11:55,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:55,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:57,087 INFO 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 03:11:57,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:57,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635873595] [2024-06-28 03:11:57,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635873595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:57,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:57,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:11:57,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455299533] [2024-06-28 03:11:57,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:57,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:11:57,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:57,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:11:57,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:11:57,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-28 03:11:57,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 130 transitions, 951 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 03:11:57,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:57,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-28 03:11:57,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:59,987 INFO L124 PetriNetUnfolderBase]: 16420/22171 cut-off events. [2024-06-28 03:11:59,987 INFO L125 PetriNetUnfolderBase]: For 209030/209038 co-relation queries the response was YES. [2024-06-28 03:12:00,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102936 conditions, 22171 events. 16420/22171 cut-off events. For 209030/209038 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 117681 event pairs, 8273 based on Foata normal form. 14/22183 useless extension candidates. Maximal degree in co-relation 102904. Up to 21801 conditions per place. [2024-06-28 03:12:00,138 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 110 selfloop transitions, 66 changer transitions 0/181 dead transitions. [2024-06-28 03:12:00,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 181 transitions, 1657 flow [2024-06-28 03:12:00,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:12:00,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:12:00,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 03:12:00,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528301886792453 [2024-06-28 03:12:00,139 INFO L175 Difference]: Start difference. First operand has 95 places, 130 transitions, 951 flow. Second operand 8 states and 192 transitions. [2024-06-28 03:12:00,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 181 transitions, 1657 flow [2024-06-28 03:12:00,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 181 transitions, 1564 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 03:12:00,172 INFO L231 Difference]: Finished difference. Result has 97 places, 138 transitions, 1145 flow [2024-06-28 03:12:00,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1145, PETRI_PLACES=97, PETRI_TRANSITIONS=138} [2024-06-28 03:12:00,173 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 41 predicate places. [2024-06-28 03:12:00,173 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 138 transitions, 1145 flow [2024-06-28 03:12:00,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 03:12:00,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:00,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:00,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:12:00,174 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:12:00,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:00,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1377173794, now seen corresponding path program 4 times [2024-06-28 03:12:00,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:00,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363477656] [2024-06-28 03:12:00,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:00,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:01,820 INFO 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 03:12:01,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:01,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363477656] [2024-06-28 03:12:01,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363477656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:01,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:01,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:12:01,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620150470] [2024-06-28 03:12:01,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:01,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:12:01,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:01,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:12:01,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:12:01,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-28 03:12:01,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 138 transitions, 1145 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 03:12:01,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:01,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-28 03:12:01,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:05,219 INFO L124 PetriNetUnfolderBase]: 16464/22248 cut-off events. [2024-06-28 03:12:05,219 INFO L125 PetriNetUnfolderBase]: For 254309/254325 co-relation queries the response was YES. [2024-06-28 03:12:05,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108603 conditions, 22248 events. 16464/22248 cut-off events. For 254309/254325 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 118399 event pairs, 8620 based on Foata normal form. 22/22267 useless extension candidates. Maximal degree in co-relation 108570. Up to 21894 conditions per place. [2024-06-28 03:12:05,376 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 117 selfloop transitions, 55 changer transitions 0/177 dead transitions. [2024-06-28 03:12:05,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 177 transitions, 1693 flow [2024-06-28 03:12:05,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:12:05,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:12:05,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 03:12:05,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.444743935309973 [2024-06-28 03:12:05,377 INFO L175 Difference]: Start difference. First operand has 97 places, 138 transitions, 1145 flow. Second operand 7 states and 165 transitions. [2024-06-28 03:12:05,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 177 transitions, 1693 flow [2024-06-28 03:12:05,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 177 transitions, 1579 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-28 03:12:05,458 INFO L231 Difference]: Finished difference. Result has 100 places, 142 transitions, 1251 flow [2024-06-28 03:12:05,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1251, PETRI_PLACES=100, PETRI_TRANSITIONS=142} [2024-06-28 03:12:05,459 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 44 predicate places. [2024-06-28 03:12:05,459 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 142 transitions, 1251 flow [2024-06-28 03:12:05,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 03:12:05,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:05,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:05,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:12:05,460 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:12:05,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:05,460 INFO L85 PathProgramCache]: Analyzing trace with hash 684249362, now seen corresponding path program 2 times [2024-06-28 03:12:05,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:05,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161121050] [2024-06-28 03:12:05,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:05,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:07,557 INFO 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 03:12:07,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:07,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161121050] [2024-06-28 03:12:07,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161121050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:07,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:07,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:12:07,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015776532] [2024-06-28 03:12:07,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:07,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:12:07,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:07,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:12:07,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:12:07,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-28 03:12:07,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 142 transitions, 1251 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 03:12:07,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:07,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-28 03:12:07,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:11,278 INFO L124 PetriNetUnfolderBase]: 16486/22338 cut-off events. [2024-06-28 03:12:11,279 INFO L125 PetriNetUnfolderBase]: For 308747/308755 co-relation queries the response was YES. [2024-06-28 03:12:11,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114097 conditions, 22338 events. 16486/22338 cut-off events. For 308747/308755 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 119830 event pairs, 9833 based on Foata normal form. 11/22347 useless extension candidates. Maximal degree in co-relation 114062. Up to 22080 conditions per place. [2024-06-28 03:12:11,402 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 142 selfloop transitions, 31 changer transitions 0/178 dead transitions. [2024-06-28 03:12:11,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 178 transitions, 1783 flow [2024-06-28 03:12:11,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:12:11,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:12:11,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 03:12:11,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.431266846361186 [2024-06-28 03:12:11,404 INFO L175 Difference]: Start difference. First operand has 100 places, 142 transitions, 1251 flow. Second operand 7 states and 160 transitions. [2024-06-28 03:12:11,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 178 transitions, 1783 flow [2024-06-28 03:12:11,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 178 transitions, 1649 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 03:12:11,711 INFO L231 Difference]: Finished difference. Result has 102 places, 146 transitions, 1273 flow [2024-06-28 03:12:11,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1273, PETRI_PLACES=102, PETRI_TRANSITIONS=146} [2024-06-28 03:12:11,712 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 46 predicate places. [2024-06-28 03:12:11,712 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 146 transitions, 1273 flow [2024-06-28 03:12:11,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 03:12:11,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:11,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:11,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:12:11,713 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:12:11,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:11,713 INFO L85 PathProgramCache]: Analyzing trace with hash -2111934620, now seen corresponding path program 5 times [2024-06-28 03:12:11,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:11,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626373373] [2024-06-28 03:12:11,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:11,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:13,612 INFO 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 03:12:13,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:13,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626373373] [2024-06-28 03:12:13,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626373373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:13,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:13,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:12:13,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170477700] [2024-06-28 03:12:13,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:13,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:12:13,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:13,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:12:13,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:12:13,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-28 03:12:13,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 146 transitions, 1273 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 03:12:13,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:13,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-28 03:12:13,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:16,911 INFO L124 PetriNetUnfolderBase]: 16814/22709 cut-off events. [2024-06-28 03:12:16,911 INFO L125 PetriNetUnfolderBase]: For 336770/336780 co-relation queries the response was YES. [2024-06-28 03:12:16,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121476 conditions, 22709 events. 16814/22709 cut-off events. For 336770/336780 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 120123 event pairs, 8297 based on Foata normal form. 14/22713 useless extension candidates. Maximal degree in co-relation 121440. Up to 22238 conditions per place. [2024-06-28 03:12:17,061 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 139 selfloop transitions, 93 changer transitions 0/237 dead transitions. [2024-06-28 03:12:17,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 237 transitions, 2610 flow [2024-06-28 03:12:17,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:12:17,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:12:17,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-28 03:12:17,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43160377358490565 [2024-06-28 03:12:17,063 INFO L175 Difference]: Start difference. First operand has 102 places, 146 transitions, 1273 flow. Second operand 8 states and 183 transitions. [2024-06-28 03:12:17,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 237 transitions, 2610 flow [2024-06-28 03:12:17,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 237 transitions, 2487 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 03:12:17,262 INFO L231 Difference]: Finished difference. Result has 106 places, 195 transitions, 2051 flow [2024-06-28 03:12:17,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2051, PETRI_PLACES=106, PETRI_TRANSITIONS=195} [2024-06-28 03:12:17,263 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 50 predicate places. [2024-06-28 03:12:17,263 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 195 transitions, 2051 flow [2024-06-28 03:12:17,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 03:12:17,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:17,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:17,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:12:17,263 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:12:17,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:17,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1554547300, now seen corresponding path program 3 times [2024-06-28 03:12:17,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:17,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187451244] [2024-06-28 03:12:17,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:17,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:19,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:19,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:19,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187451244] [2024-06-28 03:12:19,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187451244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:19,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:19,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:12:19,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144723616] [2024-06-28 03:12:19,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:19,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:12:19,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:19,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:12:19,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:12:19,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-28 03:12:19,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 195 transitions, 2051 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 03:12:19,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:19,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-28 03:12:19,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:23,185 INFO L124 PetriNetUnfolderBase]: 16836/22840 cut-off events. [2024-06-28 03:12:23,185 INFO L125 PetriNetUnfolderBase]: For 410614/410644 co-relation queries the response was YES. [2024-06-28 03:12:23,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127536 conditions, 22840 events. 16836/22840 cut-off events. For 410614/410644 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 122628 event pairs, 9652 based on Foata normal form. 27/22861 useless extension candidates. Maximal degree in co-relation 127498. Up to 22448 conditions per place. [2024-06-28 03:12:23,344 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 180 selfloop transitions, 54 changer transitions 0/239 dead transitions. [2024-06-28 03:12:23,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 239 transitions, 2901 flow [2024-06-28 03:12:23,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:12:23,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:12:23,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 03:12:23,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393530997304582 [2024-06-28 03:12:23,346 INFO L175 Difference]: Start difference. First operand has 106 places, 195 transitions, 2051 flow. Second operand 7 states and 163 transitions. [2024-06-28 03:12:23,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 239 transitions, 2901 flow [2024-06-28 03:12:23,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 239 transitions, 2827 flow, removed 36 selfloop flow, removed 1 redundant places. [2024-06-28 03:12:23,504 INFO L231 Difference]: Finished difference. Result has 113 places, 206 transitions, 2306 flow [2024-06-28 03:12:23,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1977, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2306, PETRI_PLACES=113, PETRI_TRANSITIONS=206} [2024-06-28 03:12:23,505 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 57 predicate places. [2024-06-28 03:12:23,505 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 206 transitions, 2306 flow [2024-06-28 03:12:23,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 03:12:23,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:23,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:23,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:12:23,505 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:12:23,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:23,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1554310150, now seen corresponding path program 4 times [2024-06-28 03:12:23,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:23,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555215383] [2024-06-28 03:12:23,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:23,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:25,736 INFO 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 03:12:25,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:25,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555215383] [2024-06-28 03:12:25,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555215383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:25,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:25,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:12:25,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824503939] [2024-06-28 03:12:25,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:25,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:12:25,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:25,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:12:25,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:12:25,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-28 03:12:25,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 206 transitions, 2306 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 03:12:25,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:25,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-28 03:12:25,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:29,628 INFO L124 PetriNetUnfolderBase]: 16827/22828 cut-off events. [2024-06-28 03:12:29,628 INFO L125 PetriNetUnfolderBase]: For 459831/459861 co-relation queries the response was YES. [2024-06-28 03:12:29,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132497 conditions, 22828 events. 16827/22828 cut-off events. For 459831/459861 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 122634 event pairs, 9652 based on Foata normal form. 27/22849 useless extension candidates. Maximal degree in co-relation 132455. Up to 22505 conditions per place. [2024-06-28 03:12:29,827 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 190 selfloop transitions, 43 changer transitions 0/238 dead transitions. [2024-06-28 03:12:29,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 238 transitions, 2903 flow [2024-06-28 03:12:29,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:12:29,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:12:29,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 171 transitions. [2024-06-28 03:12:29,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4033018867924528 [2024-06-28 03:12:29,828 INFO L175 Difference]: Start difference. First operand has 113 places, 206 transitions, 2306 flow. Second operand 8 states and 171 transitions. [2024-06-28 03:12:29,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 238 transitions, 2903 flow [2024-06-28 03:12:30,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 238 transitions, 2734 flow, removed 64 selfloop flow, removed 3 redundant places. [2024-06-28 03:12:30,122 INFO L231 Difference]: Finished difference. Result has 118 places, 208 transitions, 2257 flow [2024-06-28 03:12:30,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2138, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2257, PETRI_PLACES=118, PETRI_TRANSITIONS=208} [2024-06-28 03:12:30,122 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 62 predicate places. [2024-06-28 03:12:30,123 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 208 transitions, 2257 flow [2024-06-28 03:12:30,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 03:12:30,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:30,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:30,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:12:30,123 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:12:30,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:30,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1554309964, now seen corresponding path program 6 times [2024-06-28 03:12:30,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:30,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946809926] [2024-06-28 03:12:30,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:30,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:32,075 INFO 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 03:12:32,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:32,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946809926] [2024-06-28 03:12:32,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946809926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:32,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:32,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:12:32,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760387670] [2024-06-28 03:12:32,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:32,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:12:32,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:32,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:12:32,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:12:32,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-28 03:12:32,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 208 transitions, 2257 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 03:12:32,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:32,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-28 03:12:32,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:35,613 INFO L124 PetriNetUnfolderBase]: 16809/22712 cut-off events. [2024-06-28 03:12:35,613 INFO L125 PetriNetUnfolderBase]: For 457590/457600 co-relation queries the response was YES. [2024-06-28 03:12:35,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133780 conditions, 22712 events. 16809/22712 cut-off events. For 457590/457600 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 120694 event pairs, 8047 based on Foata normal form. 14/22709 useless extension candidates. Maximal degree in co-relation 133736. Up to 22027 conditions per place. [2024-06-28 03:12:35,777 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 121 selfloop transitions, 121 changer transitions 0/247 dead transitions. [2024-06-28 03:12:35,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 247 transitions, 3071 flow [2024-06-28 03:12:35,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:12:35,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:12:35,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 03:12:35,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4501347708894879 [2024-06-28 03:12:35,779 INFO L175 Difference]: Start difference. First operand has 118 places, 208 transitions, 2257 flow. Second operand 7 states and 167 transitions. [2024-06-28 03:12:35,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 247 transitions, 3071 flow [2024-06-28 03:12:35,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 247 transitions, 2990 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 03:12:35,936 INFO L231 Difference]: Finished difference. Result has 121 places, 212 transitions, 2537 flow [2024-06-28 03:12:35,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2176, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2537, PETRI_PLACES=121, PETRI_TRANSITIONS=212} [2024-06-28 03:12:35,936 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 65 predicate places. [2024-06-28 03:12:35,937 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 212 transitions, 2537 flow [2024-06-28 03:12:35,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 03:12:35,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:35,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:35,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:12:35,937 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 03:12:35,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:35,938 INFO L85 PathProgramCache]: Analyzing trace with hash 254600117, now seen corresponding path program 1 times [2024-06-28 03:12:35,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:35,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406359574] [2024-06-28 03:12:35,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:35,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:37,450 INFO 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 03:12:37,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:37,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406359574] [2024-06-28 03:12:37,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406359574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:37,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:37,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:12:37,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841919128] [2024-06-28 03:12:37,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:37,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:12:37,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:37,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:12:37,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:12:37,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-28 03:12:37,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 212 transitions, 2537 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 03:12:37,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:37,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-28 03:12:37,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand