./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix017.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix017.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix017.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix017.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:25:55,903 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:25:55,996 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:25:56,001 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:25:56,001 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:25:56,034 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:25:56,036 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:25:56,036 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:25:56,037 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:25:56,041 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:25:56,042 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:25:56,042 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:25:56,043 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:25:56,044 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:25:56,045 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:25:56,045 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:25:56,045 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:25:56,046 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:25:56,046 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:25:56,046 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:25:56,047 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:25:56,047 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:25:56,047 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:25:56,048 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:25:56,048 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:25:56,048 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:25:56,049 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:25:56,049 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:25:56,050 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:25:56,050 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:25:56,051 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:25:56,064 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:25:56,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:25:56,065 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:25:56,065 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:25:56,065 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:25:56,065 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:25:56,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:25:56,066 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:25:56,066 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:25:56,067 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:25:56,067 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:25:56,067 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:25:56,067 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:25:56,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:25:56,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:25:56,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:25:56,324 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:25:56,325 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:25:56,326 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix017.oepc.yml/witness.yml [2024-06-28 01:25:56,575 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:25:56,576 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:25:56,577 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix017.oepc.i [2024-06-28 01:25:57,754 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:25:58,067 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:25:58,068 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix017.oepc.i [2024-06-28 01:25:58,085 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/883943cd8/cd302a1135af43af95c27e1fc646265b/FLAGd47539fab [2024-06-28 01:25:58,101 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/883943cd8/cd302a1135af43af95c27e1fc646265b [2024-06-28 01:25:58,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:25:58,103 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:25:58,105 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:25:58,106 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:25:58,110 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:25:58,111 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:25:56" (1/2) ... [2024-06-28 01:25:58,113 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fb8f163 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:25:58, skipping insertion in model container [2024-06-28 01:25:58,113 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:25:56" (1/2) ... [2024-06-28 01:25:58,114 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@524de763 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:25:58, skipping insertion in model container [2024-06-28 01:25:58,114 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:25:58" (2/2) ... [2024-06-28 01:25:58,115 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fb8f163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:25:58, skipping insertion in model container [2024-06-28 01:25:58,115 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:25:58" (2/2) ... [2024-06-28 01:25:58,116 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:25:58,260 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:25:58,261 INFO L97 edCorrectnessWitness]: Location invariant before [L873-L873] (((((((((((((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (((((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0) [2024-06-28 01:25:58,262 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] (((((((((((((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (((((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0) [2024-06-28 01:25:58,262 INFO L97 edCorrectnessWitness]: Location invariant before [L871-L871] (((((((((((((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (((((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0) [2024-06-28 01:25:58,262 INFO L97 edCorrectnessWitness]: Location invariant before [L875-L875] (((((((((((((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (((((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0) [2024-06-28 01:25:58,262 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:25:58,263 INFO L106 edCorrectnessWitness]: ghost_update [L869-L869] multithreaded = 1; [2024-06-28 01:25:58,307 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:25:58,489 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix017.oepc.i[945,958] [2024-06-28 01:25:58,730 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:25:58,743 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:25:58,783 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix017.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:25:58,901 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:25:58,953 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:25:58,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:25:58 WrapperNode [2024-06-28 01:25:58,954 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:25:58,955 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:25:58,956 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:25:58,956 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:25:58,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:25:58" (1/1) ... [2024-06-28 01:25:58,981 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:25:58" (1/1) ... [2024-06-28 01:25:59,015 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 136 [2024-06-28 01:25:59,015 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:25:59,016 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:25:59,016 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:25:59,016 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:25:59,026 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:25:58" (1/1) ... [2024-06-28 01:25:59,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:25:58" (1/1) ... [2024-06-28 01:25:59,031 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:25:58" (1/1) ... [2024-06-28 01:25:59,048 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 01:25:59,049 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:25:58" (1/1) ... [2024-06-28 01:25:59,049 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:25:58" (1/1) ... [2024-06-28 01:25:59,062 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:25:58" (1/1) ... [2024-06-28 01:25:59,064 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:25:58" (1/1) ... [2024-06-28 01:25:59,066 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:25:58" (1/1) ... [2024-06-28 01:25:59,068 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:25:58" (1/1) ... [2024-06-28 01:25:59,072 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:25:59,073 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:25:59,073 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:25:59,074 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:25:59,074 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:25:58" (1/1) ... [2024-06-28 01:25:59,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:25:59,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:25:59,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:25:59,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:25:59,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:25:59,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:25:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:25:59,150 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:25:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:25:59,150 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:25:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:25:59,151 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:25:59,151 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 01:25:59,151 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 01:25:59,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:25:59,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:25:59,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:25:59,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:25:59,156 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:25:59,430 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:25:59,432 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:25:59,818 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:25:59,818 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:25:59,965 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:25:59,965 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:25:59,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:25:59 BoogieIcfgContainer [2024-06-28 01:25:59,966 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:25:59,968 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:25:59,968 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:25:59,971 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:25:59,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:25:56" (1/4) ... [2024-06-28 01:25:59,972 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf5ba62 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:25:59, skipping insertion in model container [2024-06-28 01:25:59,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:25:58" (2/4) ... [2024-06-28 01:25:59,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf5ba62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:25:59, skipping insertion in model container [2024-06-28 01:25:59,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:25:58" (3/4) ... [2024-06-28 01:25:59,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf5ba62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:25:59, skipping insertion in model container [2024-06-28 01:25:59,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:25:59" (4/4) ... [2024-06-28 01:25:59,975 INFO L112 eAbstractionObserver]: Analyzing ICFG mix017.oepc.i [2024-06-28 01:25:59,994 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:25:59,994 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-06-28 01:25:59,995 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:26:00,054 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:26:00,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 58 transitions, 132 flow [2024-06-28 01:26:00,165 INFO L124 PetriNetUnfolderBase]: 1/54 cut-off events. [2024-06-28 01:26:00,166 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:26:00,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 54 events. 1/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-06-28 01:26:00,171 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 58 transitions, 132 flow [2024-06-28 01:26:00,176 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 54 transitions, 120 flow [2024-06-28 01:26:00,192 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:26:00,200 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;@566431dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:26:00,201 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-06-28 01:26:00,207 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:26:00,207 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:26:00,207 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:26:00,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:00,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:26:00,209 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:26:00,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:00,217 INFO L85 PathProgramCache]: Analyzing trace with hash 385147288, now seen corresponding path program 1 times [2024-06-28 01:26:00,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:00,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852136304] [2024-06-28 01:26:00,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:00,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:01,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:01,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:01,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852136304] [2024-06-28 01:26:01,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852136304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:01,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:01,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:26:01,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407168833] [2024-06-28 01:26:01,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:01,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:26:01,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:01,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:26:01,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:26:01,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-06-28 01:26:01,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:01,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:01,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-06-28 01:26:01,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:05,664 INFO L124 PetriNetUnfolderBase]: 21343/29406 cut-off events. [2024-06-28 01:26:05,665 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-06-28 01:26:05,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58170 conditions, 29406 events. 21343/29406 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 1046. Compared 181895 event pairs, 13735 based on Foata normal form. 901/28756 useless extension candidates. Maximal degree in co-relation 58157. Up to 28369 conditions per place. [2024-06-28 01:26:05,913 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 51 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2024-06-28 01:26:05,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 72 transitions, 279 flow [2024-06-28 01:26:05,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:26:05,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:26:05,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-06-28 01:26:05,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6896551724137931 [2024-06-28 01:26:05,928 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 120 flow. Second operand 3 states and 120 transitions. [2024-06-28 01:26:05,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 72 transitions, 279 flow [2024-06-28 01:26:05,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 272 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 01:26:05,939 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 160 flow [2024-06-28 01:26:05,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-06-28 01:26:05,946 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2024-06-28 01:26:05,946 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 160 flow [2024-06-28 01:26:05,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:05,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:05,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:26:05,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:26:05,948 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:26:05,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:05,948 INFO L85 PathProgramCache]: Analyzing trace with hash 385147966, now seen corresponding path program 1 times [2024-06-28 01:26:05,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:05,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556738325] [2024-06-28 01:26:05,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:05,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:06,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:06,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556738325] [2024-06-28 01:26:06,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556738325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:06,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:06,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:26:06,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568061655] [2024-06-28 01:26:06,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:06,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:26:06,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:06,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:26:06,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:26:06,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 58 [2024-06-28 01:26:06,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:06,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:06,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 58 [2024-06-28 01:26:06,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:07,388 INFO L124 PetriNetUnfolderBase]: 5202/9227 cut-off events. [2024-06-28 01:26:07,389 INFO L125 PetriNetUnfolderBase]: For 688/688 co-relation queries the response was YES. [2024-06-28 01:26:07,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17508 conditions, 9227 events. 5202/9227 cut-off events. For 688/688 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 73760 event pairs, 3379 based on Foata normal form. 0/8481 useless extension candidates. Maximal degree in co-relation 17496. Up to 6062 conditions per place. [2024-06-28 01:26:07,466 INFO L140 encePairwiseOnDemand]: 55/58 looper letters, 45 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2024-06-28 01:26:07,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 77 transitions, 295 flow [2024-06-28 01:26:07,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:26:07,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:26:07,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2024-06-28 01:26:07,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7931034482758621 [2024-06-28 01:26:07,469 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 160 flow. Second operand 3 states and 138 transitions. [2024-06-28 01:26:07,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 77 transitions, 295 flow [2024-06-28 01:26:07,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 77 transitions, 290 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:26:07,471 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 152 flow [2024-06-28 01:26:07,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2024-06-28 01:26:07,472 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2024-06-28 01:26:07,472 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 152 flow [2024-06-28 01:26:07,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:07,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:07,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:07,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:26:07,474 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:26:07,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:07,474 INFO L85 PathProgramCache]: Analyzing trace with hash 759999564, now seen corresponding path program 1 times [2024-06-28 01:26:07,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:07,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415871554] [2024-06-28 01:26:07,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:07,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:08,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:08,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:08,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415871554] [2024-06-28 01:26:08,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415871554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:08,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:08,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:26:08,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117309759] [2024-06-28 01:26:08,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:08,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:26:08,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:08,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:26:08,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:26:08,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-06-28 01:26:08,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:08,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:08,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-06-28 01:26:08,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:11,371 INFO L124 PetriNetUnfolderBase]: 17593/26330 cut-off events. [2024-06-28 01:26:11,371 INFO L125 PetriNetUnfolderBase]: For 6463/6463 co-relation queries the response was YES. [2024-06-28 01:26:11,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56536 conditions, 26330 events. 17593/26330 cut-off events. For 6463/6463 co-relation queries the response was YES. Maximal size of possible extension queue 953. Compared 179801 event pairs, 12339 based on Foata normal form. 4/25490 useless extension candidates. Maximal degree in co-relation 56523. Up to 23421 conditions per place. [2024-06-28 01:26:11,556 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 63 selfloop transitions, 10 changer transitions 2/90 dead transitions. [2024-06-28 01:26:11,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 90 transitions, 398 flow [2024-06-28 01:26:11,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:26:11,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:26:11,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-06-28 01:26:11,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6508620689655172 [2024-06-28 01:26:11,562 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 152 flow. Second operand 4 states and 151 transitions. [2024-06-28 01:26:11,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 90 transitions, 398 flow [2024-06-28 01:26:11,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 90 transitions, 390 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:26:11,569 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 233 flow [2024-06-28 01:26:11,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=233, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-06-28 01:26:11,571 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2024-06-28 01:26:11,571 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 233 flow [2024-06-28 01:26:11,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:11,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:11,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:11,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:26:11,573 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:26:11,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:11,574 INFO L85 PathProgramCache]: Analyzing trace with hash 215181451, now seen corresponding path program 1 times [2024-06-28 01:26:11,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:11,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614081969] [2024-06-28 01:26:11,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:11,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:13,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:13,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:13,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614081969] [2024-06-28 01:26:13,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614081969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:13,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:13,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:26:13,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221329186] [2024-06-28 01:26:13,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:13,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:26:13,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:13,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:26:13,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:26:13,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-06-28 01:26:13,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 233 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:13,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:13,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-06-28 01:26:13,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:15,781 INFO L124 PetriNetUnfolderBase]: 18391/25835 cut-off events. [2024-06-28 01:26:15,781 INFO L125 PetriNetUnfolderBase]: For 12578/12578 co-relation queries the response was YES. [2024-06-28 01:26:15,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62554 conditions, 25835 events. 18391/25835 cut-off events. For 12578/12578 co-relation queries the response was YES. Maximal size of possible extension queue 984. Compared 161720 event pairs, 9632 based on Foata normal form. 4/25580 useless extension candidates. Maximal degree in co-relation 62539. Up to 24423 conditions per place. [2024-06-28 01:26:15,960 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 88 selfloop transitions, 28 changer transitions 0/130 dead transitions. [2024-06-28 01:26:15,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 130 transitions, 680 flow [2024-06-28 01:26:15,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:26:15,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:26:15,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 217 transitions. [2024-06-28 01:26:15,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6235632183908046 [2024-06-28 01:26:15,964 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 233 flow. Second operand 6 states and 217 transitions. [2024-06-28 01:26:15,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 130 transitions, 680 flow [2024-06-28 01:26:15,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 130 transitions, 656 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-28 01:26:15,970 INFO L231 Difference]: Finished difference. Result has 74 places, 79 transitions, 392 flow [2024-06-28 01:26:15,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=392, PETRI_PLACES=74, PETRI_TRANSITIONS=79} [2024-06-28 01:26:15,972 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2024-06-28 01:26:15,973 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 79 transitions, 392 flow [2024-06-28 01:26:15,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:15,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:15,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:15,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:26:15,974 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:26:15,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:15,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1519163074, now seen corresponding path program 1 times [2024-06-28 01:26:15,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:15,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475193568] [2024-06-28 01:26:15,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:15,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:17,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:17,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:17,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475193568] [2024-06-28 01:26:17,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475193568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:17,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:17,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:26:17,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237022595] [2024-06-28 01:26:17,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:17,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:26:17,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:17,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:26:17,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:26:18,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-06-28 01:26:18,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 79 transitions, 392 flow. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:18,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:18,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-06-28 01:26:18,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:20,601 INFO L124 PetriNetUnfolderBase]: 18375/25799 cut-off events. [2024-06-28 01:26:20,601 INFO L125 PetriNetUnfolderBase]: For 26765/26765 co-relation queries the response was YES. [2024-06-28 01:26:20,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69899 conditions, 25799 events. 18375/25799 cut-off events. For 26765/26765 co-relation queries the response was YES. Maximal size of possible extension queue 983. Compared 161373 event pairs, 8182 based on Foata normal form. 8/25558 useless extension candidates. Maximal degree in co-relation 69880. Up to 24345 conditions per place. [2024-06-28 01:26:20,775 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 98 selfloop transitions, 31 changer transitions 0/143 dead transitions. [2024-06-28 01:26:20,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 143 transitions, 826 flow [2024-06-28 01:26:20,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:26:20,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:26:20,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 248 transitions. [2024-06-28 01:26:20,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6108374384236454 [2024-06-28 01:26:20,778 INFO L175 Difference]: Start difference. First operand has 74 places, 79 transitions, 392 flow. Second operand 7 states and 248 transitions. [2024-06-28 01:26:20,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 143 transitions, 826 flow [2024-06-28 01:26:20,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 143 transitions, 793 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-28 01:26:20,801 INFO L231 Difference]: Finished difference. Result has 79 places, 81 transitions, 453 flow [2024-06-28 01:26:20,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=453, PETRI_PLACES=79, PETRI_TRANSITIONS=81} [2024-06-28 01:26:20,803 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2024-06-28 01:26:20,804 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 81 transitions, 453 flow [2024-06-28 01:26:20,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:20,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:20,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:20,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:26:20,805 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:26:20,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:20,805 INFO L85 PathProgramCache]: Analyzing trace with hash 826346560, now seen corresponding path program 1 times [2024-06-28 01:26:20,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:20,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466640549] [2024-06-28 01:26:20,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:20,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:21,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:21,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:21,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466640549] [2024-06-28 01:26:21,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466640549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:21,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:21,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:26:21,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765607580] [2024-06-28 01:26:21,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:21,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:26:21,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:21,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:26:21,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:26:21,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-28 01:26:21,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 453 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:21,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:21,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-28 01:26:21,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:25,421 INFO L124 PetriNetUnfolderBase]: 21297/32086 cut-off events. [2024-06-28 01:26:25,421 INFO L125 PetriNetUnfolderBase]: For 46271/46271 co-relation queries the response was YES. [2024-06-28 01:26:25,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87164 conditions, 32086 events. 21297/32086 cut-off events. For 46271/46271 co-relation queries the response was YES. Maximal size of possible extension queue 1162. Compared 226471 event pairs, 11387 based on Foata normal form. 6/31229 useless extension candidates. Maximal degree in co-relation 87142. Up to 28255 conditions per place. [2024-06-28 01:26:25,643 INFO L140 encePairwiseOnDemand]: 48/58 looper letters, 84 selfloop transitions, 14 changer transitions 0/110 dead transitions. [2024-06-28 01:26:25,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 110 transitions, 737 flow [2024-06-28 01:26:25,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:26:25,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:26:25,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-06-28 01:26:25,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2024-06-28 01:26:25,646 INFO L175 Difference]: Start difference. First operand has 79 places, 81 transitions, 453 flow. Second operand 5 states and 155 transitions. [2024-06-28 01:26:25,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 110 transitions, 737 flow [2024-06-28 01:26:25,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 110 transitions, 661 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 01:26:25,659 INFO L231 Difference]: Finished difference. Result has 79 places, 85 transitions, 451 flow [2024-06-28 01:26:25,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=451, PETRI_PLACES=79, PETRI_TRANSITIONS=85} [2024-06-28 01:26:25,662 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2024-06-28 01:26:25,663 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 85 transitions, 451 flow [2024-06-28 01:26:25,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:25,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:25,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:25,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:26:25,663 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:26:25,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:25,664 INFO L85 PathProgramCache]: Analyzing trace with hash 573511482, now seen corresponding path program 1 times [2024-06-28 01:26:25,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:25,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306339071] [2024-06-28 01:26:25,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:25,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:26,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:26,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:26,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306339071] [2024-06-28 01:26:26,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306339071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:26,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:26,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:26:26,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8441476] [2024-06-28 01:26:26,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:26,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:26:26,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:26,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:26:26,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:26:27,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-28 01:26:27,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 85 transitions, 451 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:27,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:27,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-28 01:26:27,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:30,293 INFO L124 PetriNetUnfolderBase]: 21427/32145 cut-off events. [2024-06-28 01:26:30,293 INFO L125 PetriNetUnfolderBase]: For 61988/61988 co-relation queries the response was YES. [2024-06-28 01:26:30,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93399 conditions, 32145 events. 21427/32145 cut-off events. For 61988/61988 co-relation queries the response was YES. Maximal size of possible extension queue 1130. Compared 222794 event pairs, 10117 based on Foata normal form. 6/31128 useless extension candidates. Maximal degree in co-relation 93375. Up to 28329 conditions per place. [2024-06-28 01:26:30,505 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 106 selfloop transitions, 23 changer transitions 0/141 dead transitions. [2024-06-28 01:26:30,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 141 transitions, 952 flow [2024-06-28 01:26:30,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:26:30,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:26:30,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-06-28 01:26:30,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574712643678161 [2024-06-28 01:26:30,507 INFO L175 Difference]: Start difference. First operand has 79 places, 85 transitions, 451 flow. Second operand 6 states and 194 transitions. [2024-06-28 01:26:30,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 141 transitions, 952 flow [2024-06-28 01:26:30,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 141 transitions, 891 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 01:26:30,521 INFO L231 Difference]: Finished difference. Result has 84 places, 99 transitions, 596 flow [2024-06-28 01:26:30,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=596, PETRI_PLACES=84, PETRI_TRANSITIONS=99} [2024-06-28 01:26:30,522 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 18 predicate places. [2024-06-28 01:26:30,522 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 99 transitions, 596 flow [2024-06-28 01:26:30,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:30,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:30,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:30,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:26:30,523 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:26:30,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:30,523 INFO L85 PathProgramCache]: Analyzing trace with hash -162899718, now seen corresponding path program 2 times [2024-06-28 01:26:30,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:30,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170415465] [2024-06-28 01:26:30,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:30,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:31,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:31,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:31,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170415465] [2024-06-28 01:26:31,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170415465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:31,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:31,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:26:31,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078202782] [2024-06-28 01:26:31,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:31,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:26:31,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:31,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:26:31,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:26:31,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-28 01:26:31,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 99 transitions, 596 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:31,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:31,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-28 01:26:31,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:35,129 INFO L124 PetriNetUnfolderBase]: 21409/32251 cut-off events. [2024-06-28 01:26:35,130 INFO L125 PetriNetUnfolderBase]: For 87341/87341 co-relation queries the response was YES. [2024-06-28 01:26:35,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101831 conditions, 32251 events. 21409/32251 cut-off events. For 87341/87341 co-relation queries the response was YES. Maximal size of possible extension queue 1163. Compared 227622 event pairs, 11083 based on Foata normal form. 6/31383 useless extension candidates. Maximal degree in co-relation 101804. Up to 28387 conditions per place. [2024-06-28 01:26:35,522 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 104 selfloop transitions, 16 changer transitions 0/132 dead transitions. [2024-06-28 01:26:35,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 132 transitions, 922 flow [2024-06-28 01:26:35,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:26:35,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:26:35,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2024-06-28 01:26:35,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2024-06-28 01:26:35,527 INFO L175 Difference]: Start difference. First operand has 84 places, 99 transitions, 596 flow. Second operand 6 states and 184 transitions. [2024-06-28 01:26:35,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 132 transitions, 922 flow [2024-06-28 01:26:35,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 132 transitions, 882 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-06-28 01:26:35,562 INFO L231 Difference]: Finished difference. Result has 89 places, 99 transitions, 599 flow [2024-06-28 01:26:35,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=599, PETRI_PLACES=89, PETRI_TRANSITIONS=99} [2024-06-28 01:26:35,563 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 23 predicate places. [2024-06-28 01:26:35,563 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 99 transitions, 599 flow [2024-06-28 01:26:35,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:35,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:35,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:35,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:26:35,565 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:26:35,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:35,566 INFO L85 PathProgramCache]: Analyzing trace with hash 598867881, now seen corresponding path program 1 times [2024-06-28 01:26:35,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:35,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538579681] [2024-06-28 01:26:35,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:35,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:35,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:36,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:36,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:36,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538579681] [2024-06-28 01:26:36,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538579681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:36,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:36,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:26:36,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992098534] [2024-06-28 01:26:36,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:36,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:26:36,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:36,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:26:36,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:26:37,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-28 01:26:37,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 99 transitions, 599 flow. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:37,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:37,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-28 01:26:37,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:40,943 INFO L124 PetriNetUnfolderBase]: 21485/32187 cut-off events. [2024-06-28 01:26:40,943 INFO L125 PetriNetUnfolderBase]: For 93753/93753 co-relation queries the response was YES. [2024-06-28 01:26:41,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103110 conditions, 32187 events. 21485/32187 cut-off events. For 93753/93753 co-relation queries the response was YES. Maximal size of possible extension queue 1130. Compared 222836 event pairs, 10136 based on Foata normal form. 6/31170 useless extension candidates. Maximal degree in co-relation 103080. Up to 28448 conditions per place. [2024-06-28 01:26:41,219 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 124 selfloop transitions, 19 changer transitions 0/155 dead transitions. [2024-06-28 01:26:41,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 155 transitions, 1065 flow [2024-06-28 01:26:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:26:41,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:26:41,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 222 transitions. [2024-06-28 01:26:41,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5467980295566502 [2024-06-28 01:26:41,222 INFO L175 Difference]: Start difference. First operand has 89 places, 99 transitions, 599 flow. Second operand 7 states and 222 transitions. [2024-06-28 01:26:41,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 155 transitions, 1065 flow [2024-06-28 01:26:41,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 155 transitions, 1022 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:26:41,252 INFO L231 Difference]: Finished difference. Result has 92 places, 103 transitions, 653 flow [2024-06-28 01:26:41,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=653, PETRI_PLACES=92, PETRI_TRANSITIONS=103} [2024-06-28 01:26:41,253 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 26 predicate places. [2024-06-28 01:26:41,254 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 103 transitions, 653 flow [2024-06-28 01:26:41,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:41,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:41,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:41,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:26:41,255 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:26:41,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:41,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1266907577, now seen corresponding path program 2 times [2024-06-28 01:26:41,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:41,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964533295] [2024-06-28 01:26:41,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:41,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:42,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:42,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:42,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964533295] [2024-06-28 01:26:42,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964533295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:42,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:42,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:26:42,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116974398] [2024-06-28 01:26:42,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:42,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:26:42,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:42,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:26:42,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:26:42,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-28 01:26:42,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 103 transitions, 653 flow. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:42,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:42,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-28 01:26:42,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:46,688 INFO L124 PetriNetUnfolderBase]: 21615/32370 cut-off events. [2024-06-28 01:26:46,688 INFO L125 PetriNetUnfolderBase]: For 120381/120381 co-relation queries the response was YES. [2024-06-28 01:26:46,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110010 conditions, 32370 events. 21615/32370 cut-off events. For 120381/120381 co-relation queries the response was YES. Maximal size of possible extension queue 1130. Compared 223949 event pairs, 9724 based on Foata normal form. 6/31347 useless extension candidates. Maximal degree in co-relation 109980. Up to 28385 conditions per place. [2024-06-28 01:26:46,914 INFO L140 encePairwiseOnDemand]: 44/58 looper letters, 116 selfloop transitions, 37 changer transitions 0/165 dead transitions. [2024-06-28 01:26:46,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 165 transitions, 1249 flow [2024-06-28 01:26:46,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:26:46,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:26:46,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 228 transitions. [2024-06-28 01:26:46,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5615763546798029 [2024-06-28 01:26:46,917 INFO L175 Difference]: Start difference. First operand has 92 places, 103 transitions, 653 flow. Second operand 7 states and 228 transitions. [2024-06-28 01:26:46,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 165 transitions, 1249 flow [2024-06-28 01:26:46,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 165 transitions, 1176 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 01:26:46,961 INFO L231 Difference]: Finished difference. Result has 94 places, 111 transitions, 769 flow [2024-06-28 01:26:46,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=769, PETRI_PLACES=94, PETRI_TRANSITIONS=111} [2024-06-28 01:26:46,962 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 28 predicate places. [2024-06-28 01:26:46,962 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 111 transitions, 769 flow [2024-06-28 01:26:46,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:46,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:46,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:46,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:26:46,962 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:26:46,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:46,963 INFO L85 PathProgramCache]: Analyzing trace with hash -757604059, now seen corresponding path program 3 times [2024-06-28 01:26:46,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:46,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051626104] [2024-06-28 01:26:46,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:46,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:48,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:48,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:48,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051626104] [2024-06-28 01:26:48,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051626104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:48,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:48,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:26:48,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427924261] [2024-06-28 01:26:48,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:48,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:26:48,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:48,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:26:48,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:26:48,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-28 01:26:48,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 111 transitions, 769 flow. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:48,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:48,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-28 01:26:48,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand