./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix026.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/mix026.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/mix026.oepc.i ./goblint.2024-05-07_14-17-48.files/protection/mix026.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-wip.fs.witness-ghost-b44c828-m [2024-05-12 13:14:19,058 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:14:19,131 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:14:19,136 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:14:19,137 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:14:19,161 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:14:19,162 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:14:19,162 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:14:19,163 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:14:19,166 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:14:19,166 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:14:19,166 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:14:19,167 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:14:19,168 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:14:19,169 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:14:19,169 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:14:19,169 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:14:19,169 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:14:19,170 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:14:19,170 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:14:19,170 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:14:19,171 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:14:19,171 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:14:19,171 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:14:19,171 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:14:19,171 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:14:19,172 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:14:19,172 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:14:19,173 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:14:19,173 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:14:19,174 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:14:19,174 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:14:19,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:14:19,174 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:14:19,174 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:14:19,175 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:14:19,175 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:14:19,175 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:14:19,175 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:14:19,176 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:14:19,176 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:14:19,176 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:14:19,176 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:14:19,176 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:14:19,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:14:19,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:14:19,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:14:19,465 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:14:19,465 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:14:19,466 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix026.oepc.yml/witness.yml [2024-05-12 13:14:19,644 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:14:19,645 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:14:19,646 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix026.oepc.i [2024-05-12 13:14:20,681 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:14:20,935 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:14:20,939 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix026.oepc.i [2024-05-12 13:14:20,952 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3228b13d7/9775fda6c90d479a8defd87983a93759/FLAGfeee4e1c1 [2024-05-12 13:14:20,961 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3228b13d7/9775fda6c90d479a8defd87983a93759 [2024-05-12 13:14:20,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:14:20,963 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:14:20,964 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:14:20,964 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:14:20,967 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:14:20,968 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:14:19" (1/2) ... [2024-05-12 13:14:20,969 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2946717 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:14:20, skipping insertion in model container [2024-05-12 13:14:20,969 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:14:19" (1/2) ... [2024-05-12 13:14:20,970 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@26fe8768 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:14:20, skipping insertion in model container [2024-05-12 13:14:20,970 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:14:20" (2/2) ... [2024-05-12 13:14:20,970 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2946717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:14:20, skipping insertion in model container [2024-05-12 13:14:20,970 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:14:20" (2/2) ... [2024-05-12 13:14:20,971 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:14:21,070 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:14:21,071 INFO L97 edCorrectnessWitness]: Location invariant before [L871-L871] ((((((((((((((((((((((! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 2) && __unbuffered_p3_EAX <= 127) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-05-12 13:14:21,071 INFO L97 edCorrectnessWitness]: Location invariant before [L869-L869] ((((((((((((((((((((((! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 2) && __unbuffered_p3_EAX <= 127) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-05-12 13:14:21,071 INFO L97 edCorrectnessWitness]: Location invariant before [L873-L873] ((((((((((((((((((((((! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 2) && __unbuffered_p3_EAX <= 127) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-05-12 13:14:21,072 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] ((((((((((((((((((((((! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 2) && __unbuffered_p3_EAX <= 127) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-05-12 13:14:21,072 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:14:21,072 INFO L106 edCorrectnessWitness]: ghost_update [L867-L867] multithreaded = 1; [2024-05-12 13:14:21,118 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:14:21,279 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix026.oepc.i[945,958] [2024-05-12 13:14:21,429 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:14:21,442 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:14:21,471 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix026.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:14:21,547 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:14:21,591 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:14:21,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:14:21 WrapperNode [2024-05-12 13:14:21,591 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:14:21,592 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:14:21,592 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:14:21,592 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:14:21,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:14:21" (1/1) ... [2024-05-12 13:14:21,626 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:14:21" (1/1) ... [2024-05-12 13:14:21,664 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 151 [2024-05-12 13:14:21,665 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:14:21,665 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:14:21,665 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:14:21,665 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:14:21,700 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:14:21" (1/1) ... [2024-05-12 13:14:21,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:14:21" (1/1) ... [2024-05-12 13:14:21,710 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:14:21" (1/1) ... [2024-05-12 13:14:21,760 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-05-12 13:14:21,760 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:14:21" (1/1) ... [2024-05-12 13:14:21,761 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:14:21" (1/1) ... [2024-05-12 13:14:21,769 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:14:21" (1/1) ... [2024-05-12 13:14:21,771 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:14:21" (1/1) ... [2024-05-12 13:14:21,781 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:14:21" (1/1) ... [2024-05-12 13:14:21,783 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:14:21" (1/1) ... [2024-05-12 13:14:21,787 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:14:21,787 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:14:21,787 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:14:21,788 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:14:21,788 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:14:21" (1/1) ... [2024-05-12 13:14:21,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:14:21,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:14:21,821 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) [2024-05-12 13:14:21,865 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 [2024-05-12 13:14:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:14:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:14:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:14:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:14:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 13:14:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:14:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:14:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:14:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:14:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:14:21,883 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:14:21,884 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:14:21,884 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:14:21,884 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:14:21,884 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:14:21,884 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-05-12 13:14:21,884 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-05-12 13:14:21,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:14:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:14:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:14:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:14:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 13:14:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:14:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:14:21,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:14:21,887 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 13:14:21,992 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:14:21,993 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:14:22,440 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:14:22,441 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:14:22,620 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:14:22,620 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:14:22,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:14:22 BoogieIcfgContainer [2024-05-12 13:14:22,620 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:14:22,622 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:14:22,622 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:14:22,624 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:14:22,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:14:19" (1/4) ... [2024-05-12 13:14:22,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6f88e7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:14:22, skipping insertion in model container [2024-05-12 13:14:22,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:14:20" (2/4) ... [2024-05-12 13:14:22,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6f88e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:14:22, skipping insertion in model container [2024-05-12 13:14:22,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:14:21" (3/4) ... [2024-05-12 13:14:22,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6f88e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:14:22, skipping insertion in model container [2024-05-12 13:14:22,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:14:22" (4/4) ... [2024-05-12 13:14:22,626 INFO L112 eAbstractionObserver]: Analyzing ICFG mix026.oepc.i [2024-05-12 13:14:22,639 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:14:22,639 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-05-12 13:14:22,639 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:14:22,685 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:14:22,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 59 transitions, 134 flow [2024-05-12 13:14:22,745 INFO L124 PetriNetUnfolderBase]: 1/55 cut-off events. [2024-05-12 13:14:22,745 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:14:22,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 1/55 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. 0/48 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-05-12 13:14:22,749 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 59 transitions, 134 flow [2024-05-12 13:14:22,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 55 transitions, 122 flow [2024-05-12 13:14:22,762 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:14:22,768 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;@50a9a4be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:14:22,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-05-12 13:14:22,773 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:14:22,773 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:14:22,773 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:14:22,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:22,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:14:22,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:14:22,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:22,781 INFO L85 PathProgramCache]: Analyzing trace with hash -531838091, now seen corresponding path program 1 times [2024-05-12 13:14:22,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:22,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135189805] [2024-05-12 13:14:22,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:22,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:23,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:23,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:23,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135189805] [2024-05-12 13:14:23,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135189805] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:23,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:23,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:14:23,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106500571] [2024-05-12 13:14:23,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:23,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:14:23,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:23,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:14:23,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:14:24,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-05-12 13:14:24,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:24,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:24,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-05-12 13:14:24,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:27,607 INFO L124 PetriNetUnfolderBase]: 25847/38288 cut-off events. [2024-05-12 13:14:27,607 INFO L125 PetriNetUnfolderBase]: For 213/213 co-relation queries the response was YES. [2024-05-12 13:14:27,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72998 conditions, 38288 events. 25847/38288 cut-off events. For 213/213 co-relation queries the response was YES. Maximal size of possible extension queue 1408. Compared 271202 event pairs, 21039 based on Foata normal form. 901/36418 useless extension candidates. Maximal degree in co-relation 72982. Up to 34253 conditions per place. [2024-05-12 13:14:27,828 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 54 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2024-05-12 13:14:27,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 73 transitions, 287 flow [2024-05-12 13:14:27,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:14:27,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:14:27,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-05-12 13:14:27,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6610169491525424 [2024-05-12 13:14:27,839 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 122 flow. Second operand 3 states and 117 transitions. [2024-05-12 13:14:27,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 73 transitions, 287 flow [2024-05-12 13:14:27,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 73 transitions, 280 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 13:14:27,844 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 162 flow [2024-05-12 13:14:27,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-05-12 13:14:27,847 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2024-05-12 13:14:27,848 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 162 flow [2024-05-12 13:14:27,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:27,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:27,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:14:27,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:14:27,849 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:14:27,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:27,849 INFO L85 PathProgramCache]: Analyzing trace with hash -531837275, now seen corresponding path program 1 times [2024-05-12 13:14:27,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:27,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645836470] [2024-05-12 13:14:27,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:27,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:27,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:27,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:27,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645836470] [2024-05-12 13:14:27,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645836470] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:27,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:27,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:14:27,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405047371] [2024-05-12 13:14:27,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:27,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:14:27,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:27,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:14:27,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:14:27,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 59 [2024-05-12 13:14:27,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:27,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:27,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 59 [2024-05-12 13:14:27,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:29,048 INFO L124 PetriNetUnfolderBase]: 5199/9206 cut-off events. [2024-05-12 13:14:29,049 INFO L125 PetriNetUnfolderBase]: For 694/694 co-relation queries the response was YES. [2024-05-12 13:14:29,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17482 conditions, 9206 events. 5199/9206 cut-off events. For 694/694 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 73481 event pairs, 3384 based on Foata normal form. 0/8450 useless extension candidates. Maximal degree in co-relation 17467. Up to 6056 conditions per place. [2024-05-12 13:14:29,117 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 47 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2024-05-12 13:14:29,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 301 flow [2024-05-12 13:14:29,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:14:29,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:14:29,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2024-05-12 13:14:29,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7740112994350282 [2024-05-12 13:14:29,128 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 162 flow. Second operand 3 states and 137 transitions. [2024-05-12 13:14:29,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 301 flow [2024-05-12 13:14:29,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 78 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:14:29,131 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 154 flow [2024-05-12 13:14:29,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2024-05-12 13:14:29,133 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2024-05-12 13:14:29,133 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 154 flow [2024-05-12 13:14:29,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:29,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:29,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:29,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:14:29,134 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:14:29,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:29,135 INFO L85 PathProgramCache]: Analyzing trace with hash 4754355, now seen corresponding path program 1 times [2024-05-12 13:14:29,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:29,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658249843] [2024-05-12 13:14:29,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:29,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:29,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:29,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:29,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658249843] [2024-05-12 13:14:29,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658249843] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:29,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:29,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:14:29,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758558914] [2024-05-12 13:14:29,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:29,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:14:29,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:29,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:14:29,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:14:30,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-05-12 13:14:30,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:30,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:30,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-05-12 13:14:30,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:32,600 INFO L124 PetriNetUnfolderBase]: 21308/31275 cut-off events. [2024-05-12 13:14:32,601 INFO L125 PetriNetUnfolderBase]: For 7535/7535 co-relation queries the response was YES. [2024-05-12 13:14:32,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67438 conditions, 31275 events. 21308/31275 cut-off events. For 7535/7535 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 212122 event pairs, 14861 based on Foata normal form. 4/30280 useless extension candidates. Maximal degree in co-relation 67422. Up to 28286 conditions per place. [2024-05-12 13:14:32,789 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 66 selfloop transitions, 10 changer transitions 2/91 dead transitions. [2024-05-12 13:14:32,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 91 transitions, 406 flow [2024-05-12 13:14:32,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:14:32,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:14:32,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2024-05-12 13:14:32,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6186440677966102 [2024-05-12 13:14:32,793 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 154 flow. Second operand 4 states and 146 transitions. [2024-05-12 13:14:32,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 91 transitions, 406 flow [2024-05-12 13:14:32,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 91 transitions, 398 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:14:32,797 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 235 flow [2024-05-12 13:14:32,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2024-05-12 13:14:32,798 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2024-05-12 13:14:32,798 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 235 flow [2024-05-12 13:14:32,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:32,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:32,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:32,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:14:32,799 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:14:32,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:32,800 INFO L85 PathProgramCache]: Analyzing trace with hash 274022386, now seen corresponding path program 1 times [2024-05-12 13:14:32,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:32,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594139715] [2024-05-12 13:14:32,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:32,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:33,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:33,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:33,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594139715] [2024-05-12 13:14:33,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594139715] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:33,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:33,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:14:33,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350339287] [2024-05-12 13:14:33,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:33,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:14:33,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:33,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:14:33,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:14:33,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-05-12 13:14:33,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 235 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) [2024-05-12 13:14:33,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:33,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-05-12 13:14:33,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:36,930 INFO L124 PetriNetUnfolderBase]: 22278/33053 cut-off events. [2024-05-12 13:14:36,931 INFO L125 PetriNetUnfolderBase]: For 14980/14980 co-relation queries the response was YES. [2024-05-12 13:14:37,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76775 conditions, 33053 events. 22278/33053 cut-off events. For 14980/14980 co-relation queries the response was YES. Maximal size of possible extension queue 1247. Compared 228883 event pairs, 12856 based on Foata normal form. 4/32051 useless extension candidates. Maximal degree in co-relation 76757. Up to 29522 conditions per place. [2024-05-12 13:14:37,156 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 93 selfloop transitions, 18 changer transitions 0/123 dead transitions. [2024-05-12 13:14:37,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 123 transitions, 630 flow [2024-05-12 13:14:37,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:14:37,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:14:37,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2024-05-12 13:14:37,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5847457627118644 [2024-05-12 13:14:37,159 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 235 flow. Second operand 6 states and 207 transitions. [2024-05-12 13:14:37,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 123 transitions, 630 flow [2024-05-12 13:14:37,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 123 transitions, 606 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-05-12 13:14:37,168 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 318 flow [2024-05-12 13:14:37,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=318, PETRI_PLACES=74, PETRI_TRANSITIONS=73} [2024-05-12 13:14:37,170 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 7 predicate places. [2024-05-12 13:14:37,170 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 318 flow [2024-05-12 13:14:37,170 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) [2024-05-12 13:14:37,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:37,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:37,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:14:37,171 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:14:37,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:37,171 INFO L85 PathProgramCache]: Analyzing trace with hash -95238861, now seen corresponding path program 1 times [2024-05-12 13:14:37,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:37,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521360497] [2024-05-12 13:14:37,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:37,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:38,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:38,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:38,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521360497] [2024-05-12 13:14:38,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521360497] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:38,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:38,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:14:38,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014358100] [2024-05-12 13:14:38,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:38,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:14:38,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:38,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:14:38,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:14:38,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-05-12 13:14:38,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 318 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) [2024-05-12 13:14:38,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:38,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-05-12 13:14:38,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:41,479 INFO L124 PetriNetUnfolderBase]: 22262/30885 cut-off events. [2024-05-12 13:14:41,483 INFO L125 PetriNetUnfolderBase]: For 28759/28759 co-relation queries the response was YES. [2024-05-12 13:14:41,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81956 conditions, 30885 events. 22262/30885 cut-off events. For 28759/28759 co-relation queries the response was YES. Maximal size of possible extension queue 1156. Compared 191726 event pairs, 10048 based on Foata normal form. 8/30618 useless extension candidates. Maximal degree in co-relation 81935. Up to 29431 conditions per place. [2024-05-12 13:14:41,680 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 101 selfloop transitions, 36 changer transitions 0/149 dead transitions. [2024-05-12 13:14:41,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 149 transitions, 852 flow [2024-05-12 13:14:41,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:14:41,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:14:41,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2024-05-12 13:14:41,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5738498789346247 [2024-05-12 13:14:41,682 INFO L175 Difference]: Start difference. First operand has 74 places, 73 transitions, 318 flow. Second operand 7 states and 237 transitions. [2024-05-12 13:14:41,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 149 transitions, 852 flow [2024-05-12 13:14:41,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 149 transitions, 811 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-05-12 13:14:41,690 INFO L231 Difference]: Finished difference. Result has 80 places, 87 transitions, 502 flow [2024-05-12 13:14:41,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=502, PETRI_PLACES=80, PETRI_TRANSITIONS=87} [2024-05-12 13:14:41,691 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2024-05-12 13:14:41,691 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 87 transitions, 502 flow [2024-05-12 13:14:41,691 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) [2024-05-12 13:14:41,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:41,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:41,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:14:41,692 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:14:41,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:41,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1183071541, now seen corresponding path program 1 times [2024-05-12 13:14:41,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:41,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978738464] [2024-05-12 13:14:41,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:41,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:42,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:42,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:42,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978738464] [2024-05-12 13:14:42,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978738464] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:42,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:42,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:14:42,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397689654] [2024-05-12 13:14:42,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:42,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:14:42,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:42,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:14:42,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:14:42,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-05-12 13:14:42,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 87 transitions, 502 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:42,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:42,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-05-12 13:14:42,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:46,411 INFO L124 PetriNetUnfolderBase]: 25808/38444 cut-off events. [2024-05-12 13:14:46,411 INFO L125 PetriNetUnfolderBase]: For 58913/58913 co-relation queries the response was YES. [2024-05-12 13:14:46,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106353 conditions, 38444 events. 25808/38444 cut-off events. For 58913/58913 co-relation queries the response was YES. Maximal size of possible extension queue 1361. Compared 271366 event pairs, 13959 based on Foata normal form. 6/37436 useless extension candidates. Maximal degree in co-relation 106328. Up to 34148 conditions per place. [2024-05-12 13:14:46,727 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 91 selfloop transitions, 14 changer transitions 0/116 dead transitions. [2024-05-12 13:14:46,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 116 transitions, 800 flow [2024-05-12 13:14:46,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:14:46,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:14:46,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2024-05-12 13:14:46,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5152542372881356 [2024-05-12 13:14:46,730 INFO L175 Difference]: Start difference. First operand has 80 places, 87 transitions, 502 flow. Second operand 5 states and 152 transitions. [2024-05-12 13:14:46,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 116 transitions, 800 flow [2024-05-12 13:14:46,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 116 transitions, 735 flow, removed 28 selfloop flow, removed 1 redundant places. [2024-05-12 13:14:46,754 INFO L231 Difference]: Finished difference. Result has 84 places, 91 transitions, 511 flow [2024-05-12 13:14:46,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=511, PETRI_PLACES=84, PETRI_TRANSITIONS=91} [2024-05-12 13:14:46,755 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 17 predicate places. [2024-05-12 13:14:46,755 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 91 transitions, 511 flow [2024-05-12 13:14:46,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:46,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:46,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:46,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:14:46,756 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:14:46,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:46,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1104089799, now seen corresponding path program 1 times [2024-05-12 13:14:46,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:46,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335026852] [2024-05-12 13:14:46,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:46,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:48,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:48,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:48,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335026852] [2024-05-12 13:14:48,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335026852] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:48,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:48,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:14:48,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834521964] [2024-05-12 13:14:48,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:48,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:14:48,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:48,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:14:48,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:14:48,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-05-12 13:14:48,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 91 transitions, 511 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:48,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:48,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-05-12 13:14:48,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:51,840 INFO L124 PetriNetUnfolderBase]: 25938/37989 cut-off events. [2024-05-12 13:14:51,841 INFO L125 PetriNetUnfolderBase]: For 74326/74326 co-relation queries the response was YES. [2024-05-12 13:14:51,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111803 conditions, 37989 events. 25938/37989 cut-off events. For 74326/74326 co-relation queries the response was YES. Maximal size of possible extension queue 1320. Compared 259008 event pairs, 12462 based on Foata normal form. 6/36955 useless extension candidates. Maximal degree in co-relation 111775. Up to 34222 conditions per place. [2024-05-12 13:14:52,125 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 112 selfloop transitions, 23 changer transitions 0/146 dead transitions. [2024-05-12 13:14:52,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 146 transitions, 1018 flow [2024-05-12 13:14:52,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:14:52,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:14:52,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-05-12 13:14:52,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536723163841808 [2024-05-12 13:14:52,127 INFO L175 Difference]: Start difference. First operand has 84 places, 91 transitions, 511 flow. Second operand 6 states and 190 transitions. [2024-05-12 13:14:52,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 146 transitions, 1018 flow [2024-05-12 13:14:52,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 146 transitions, 957 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-05-12 13:14:52,141 INFO L231 Difference]: Finished difference. Result has 88 places, 104 transitions, 638 flow [2024-05-12 13:14:52,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=638, PETRI_PLACES=88, PETRI_TRANSITIONS=104} [2024-05-12 13:14:52,142 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 21 predicate places. [2024-05-12 13:14:52,142 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 104 transitions, 638 flow [2024-05-12 13:14:52,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:52,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:52,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:52,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:14:52,143 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:14:52,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:52,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1279313901, now seen corresponding path program 2 times [2024-05-12 13:14:52,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:52,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645903568] [2024-05-12 13:14:52,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:52,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:53,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:53,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:53,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645903568] [2024-05-12 13:14:53,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645903568] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:53,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:53,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:14:53,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612298671] [2024-05-12 13:14:53,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:53,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:14:53,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:53,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:14:53,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:14:53,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-05-12 13:14:53,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 104 transitions, 638 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:53,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:53,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-05-12 13:14:53,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand