./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix044.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/mix044.opt.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/mix044.opt.i ./goblint.2024-05-07_14-17-48.files/protection/mix044.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 13:24:00,165 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:24:00,225 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:24:00,235 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:24:00,236 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:24:00,275 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:24:00,276 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:24:00,276 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:24:00,277 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:24:00,281 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:24:00,281 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:24:00,282 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:24:00,283 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:24:00,284 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:24:00,284 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:24:00,285 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:24:00,285 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:24:00,285 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:24:00,285 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:24:00,286 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:24:00,286 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:24:00,286 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:24:00,286 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:24:00,287 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:24:00,287 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:24:00,287 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:24:00,287 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:24:00,288 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:24:00,288 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:24:00,289 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:24:00,290 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:24:00,290 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:24:00,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:24:00,290 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:24:00,290 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:24:00,291 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:24:00,291 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:24:00,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:24:00,291 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:24:00,291 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:24:00,292 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:24:00,292 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:24:00,292 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:24:00,292 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:24:00,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:24:00,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:24:00,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:24:00,565 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:24:00,566 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:24:00,567 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix044.opt.i [2024-05-12 13:24:01,770 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:24:02,001 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:24:02,002 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix044.opt.i [2024-05-12 13:24:02,033 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b159aa62/2277c569f7154e4c9a319952eae9db74/FLAG19c8576f0 [2024-05-12 13:24:02,044 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b159aa62/2277c569f7154e4c9a319952eae9db74 [2024-05-12 13:24:02,046 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:24:02,047 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:24:02,048 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix044.opt.yml/witness.yml [2024-05-12 13:24:02,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:24:02,276 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:24:02,277 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:24:02,277 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:24:02,281 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:24:02,282 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:24:02" (1/2) ... [2024-05-12 13:24:02,283 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3007ac82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:24:02, skipping insertion in model container [2024-05-12 13:24:02,283 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:24:02" (1/2) ... [2024-05-12 13:24:02,284 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4cc545db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:24:02, skipping insertion in model container [2024-05-12 13:24:02,285 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:24:02" (2/2) ... [2024-05-12 13:24:02,285 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3007ac82 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:24:02, skipping insertion in model container [2024-05-12 13:24:02,285 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:24:02" (2/2) ... [2024-05-12 13:24:02,285 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:24:02,415 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:24:02,416 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] ((((((((((((((((((((((! multithreaded || z$r_buff1_thd1 == (_Bool)0) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2)))) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0) [2024-05-12 13:24:02,416 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ((((((((((((((((((((((! multithreaded || z$r_buff1_thd1 == (_Bool)0) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2)))) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0) [2024-05-12 13:24:02,417 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ((((((((((((((((((((((! multithreaded || z$r_buff1_thd1 == (_Bool)0) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2)))) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0) [2024-05-12 13:24:02,417 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] ((((((((((((((((((((((! multithreaded || z$r_buff1_thd1 == (_Bool)0) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2)))) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0) [2024-05-12 13:24:02,417 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:24:02,418 INFO L106 edCorrectnessWitness]: ghost_update [L847-L847] multithreaded = 1; [2024-05-12 13:24:02,454 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:24:02,648 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/mix044.opt.i[944,957] [2024-05-12 13:24:02,819 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:24:02,833 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:24:02,877 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/mix044.opt.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:24:02,991 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:24:03,023 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:24:03,024 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:24:03 WrapperNode [2024-05-12 13:24:03,024 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:24:03,025 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:24:03,025 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:24:03,025 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:24:03,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:24:03" (1/1) ... [2024-05-12 13:24:03,051 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:24:03" (1/1) ... [2024-05-12 13:24:03,089 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 174 [2024-05-12 13:24:03,089 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:24:03,090 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:24:03,090 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:24:03,090 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:24:03,102 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:24:03" (1/1) ... [2024-05-12 13:24:03,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:24:03" (1/1) ... [2024-05-12 13:24:03,118 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:24:03" (1/1) ... [2024-05-12 13:24:03,137 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 13:24:03,137 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:24:03" (1/1) ... [2024-05-12 13:24:03,138 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:24:03" (1/1) ... [2024-05-12 13:24:03,149 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:24:03" (1/1) ... [2024-05-12 13:24:03,152 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:24:03" (1/1) ... [2024-05-12 13:24:03,155 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:24:03" (1/1) ... [2024-05-12 13:24:03,157 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:24:03" (1/1) ... [2024-05-12 13:24:03,162 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:24:03,162 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:24:03,162 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:24:03,163 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:24:03,165 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:24:03" (1/1) ... [2024-05-12 13:24:03,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:24:03,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:24:03,202 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 13:24:03,224 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 13:24:03,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:24:03,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:24:03,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:24:03,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:24:03,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 13:24:03,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:24:03,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:24:03,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:24:03,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:24:03,248 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:24:03,248 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:24:03,249 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:24:03,249 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:24:03,251 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:24:03,251 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:24:03,251 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-05-12 13:24:03,252 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-05-12 13:24:03,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:24:03,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:24:03,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:24:03,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:24:03,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 13:24:03,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:24:03,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:24:03,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:24:03,257 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 13:24:03,394 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:24:03,396 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:24:03,819 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:24:03,820 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:24:04,023 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:24:04,023 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:24:04,024 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:24:04 BoogieIcfgContainer [2024-05-12 13:24:04,024 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:24:04,046 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:24:04,046 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:24:04,049 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:24:04,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:24:02" (1/4) ... [2024-05-12 13:24:04,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e10cd74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:24:04, skipping insertion in model container [2024-05-12 13:24:04,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:24:02" (2/4) ... [2024-05-12 13:24:04,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e10cd74 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:24:04, skipping insertion in model container [2024-05-12 13:24:04,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:24:03" (3/4) ... [2024-05-12 13:24:04,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e10cd74 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:24:04, skipping insertion in model container [2024-05-12 13:24:04,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:24:04" (4/4) ... [2024-05-12 13:24:04,053 INFO L112 eAbstractionObserver]: Analyzing ICFG mix044.opt.i [2024-05-12 13:24:04,070 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:24:04,070 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-05-12 13:24:04,070 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:24:04,129 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:24:04,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 60 transitions, 136 flow [2024-05-12 13:24:04,212 INFO L124 PetriNetUnfolderBase]: 1/56 cut-off events. [2024-05-12 13:24:04,212 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:24:04,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 56 events. 1/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 103 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2024-05-12 13:24:04,216 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 60 transitions, 136 flow [2024-05-12 13:24:04,221 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 56 transitions, 124 flow [2024-05-12 13:24:04,235 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:24:04,243 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;@3aff3a0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:24:04,243 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-05-12 13:24:04,248 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:24:04,249 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:24:04,249 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:24:04,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:04,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:24:04,250 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:24:04,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:04,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1274092455, now seen corresponding path program 1 times [2024-05-12 13:24:04,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:04,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311957867] [2024-05-12 13:24:04,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:04,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:05,922 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 13:24:05,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:05,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311957867] [2024-05-12 13:24:05,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311957867] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:05,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:05,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:24:05,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818264549] [2024-05-12 13:24:05,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:05,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:24:05,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:05,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:24:05,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:24:06,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 60 [2024-05-12 13:24:06,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 13:24:06,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:06,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 60 [2024-05-12 13:24:06,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:10,057 INFO L124 PetriNetUnfolderBase]: 22210/32697 cut-off events. [2024-05-12 13:24:10,058 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2024-05-12 13:24:10,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62504 conditions, 32697 events. 22210/32697 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 1302. Compared 230426 event pairs, 19084 based on Foata normal form. 841/31275 useless extension candidates. Maximal degree in co-relation 62488. Up to 29491 conditions per place. [2024-05-12 13:24:10,317 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 55 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2024-05-12 13:24:10,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 75 transitions, 293 flow [2024-05-12 13:24:10,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:24:10,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:24:10,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-05-12 13:24:10,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6722222222222223 [2024-05-12 13:24:10,331 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 124 flow. Second operand 3 states and 121 transitions. [2024-05-12 13:24:10,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 75 transitions, 293 flow [2024-05-12 13:24:10,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 75 transitions, 286 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 13:24:10,341 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 164 flow [2024-05-12 13:24:10,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2024-05-12 13:24:10,346 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2024-05-12 13:24:10,347 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 164 flow [2024-05-12 13:24:10,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 13:24:10,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:10,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:10,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:24:10,349 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:24:10,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:10,349 INFO L85 PathProgramCache]: Analyzing trace with hash -337127432, now seen corresponding path program 1 times [2024-05-12 13:24:10,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:10,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567668612] [2024-05-12 13:24:10,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:10,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:11,646 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 13:24:11,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:11,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567668612] [2024-05-12 13:24:11,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567668612] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:11,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:11,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:24:11,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14921124] [2024-05-12 13:24:11,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:11,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:24:11,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:11,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:24:11,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:24:11,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-05-12 13:24:11,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 164 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 13:24:11,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:11,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-05-12 13:24:11,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:15,014 INFO L124 PetriNetUnfolderBase]: 25327/36769 cut-off events. [2024-05-12 13:24:15,015 INFO L125 PetriNetUnfolderBase]: For 5920/5920 co-relation queries the response was YES. [2024-05-12 13:24:15,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78772 conditions, 36769 events. 25327/36769 cut-off events. For 5920/5920 co-relation queries the response was YES. Maximal size of possible extension queue 1432. Compared 254069 event pairs, 19724 based on Foata normal form. 4/34692 useless extension candidates. Maximal degree in co-relation 78757. Up to 33533 conditions per place. [2024-05-12 13:24:15,285 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 71 selfloop transitions, 11 changer transitions 0/95 dead transitions. [2024-05-12 13:24:15,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 95 transitions, 418 flow [2024-05-12 13:24:15,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:24:15,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:24:15,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 154 transitions. [2024-05-12 13:24:15,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2024-05-12 13:24:15,299 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 164 flow. Second operand 4 states and 154 transitions. [2024-05-12 13:24:15,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 95 transitions, 418 flow [2024-05-12 13:24:15,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 95 transitions, 412 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:24:15,303 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 222 flow [2024-05-12 13:24:15,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=70, PETRI_TRANSITIONS=65} [2024-05-12 13:24:15,304 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 2 predicate places. [2024-05-12 13:24:15,304 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 222 flow [2024-05-12 13:24:15,305 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 13:24:15,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:15,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:15,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:24:15,305 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:24:15,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:15,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1861014412, now seen corresponding path program 1 times [2024-05-12 13:24:15,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:15,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607854794] [2024-05-12 13:24:15,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:15,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:16,538 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 13:24:16,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:16,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607854794] [2024-05-12 13:24:16,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607854794] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:16,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:16,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:24:16,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972396847] [2024-05-12 13:24:16,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:16,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:24:16,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:16,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:24:16,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:24:16,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-05-12 13:24:16,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 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) [2024-05-12 13:24:16,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:16,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-05-12 13:24:16,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:20,051 INFO L124 PetriNetUnfolderBase]: 25372/34508 cut-off events. [2024-05-12 13:24:20,051 INFO L125 PetriNetUnfolderBase]: For 14274/14274 co-relation queries the response was YES. [2024-05-12 13:24:20,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84695 conditions, 34508 events. 25372/34508 cut-off events. For 14274/14274 co-relation queries the response was YES. Maximal size of possible extension queue 1312. Compared 213300 event pairs, 11362 based on Foata normal form. 7/33296 useless extension candidates. Maximal degree in co-relation 84678. Up to 33431 conditions per place. [2024-05-12 13:24:20,266 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 94 selfloop transitions, 26 changer transitions 0/133 dead transitions. [2024-05-12 13:24:20,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 133 transitions, 684 flow [2024-05-12 13:24:20,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:24:20,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:24:20,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 201 transitions. [2024-05-12 13:24:20,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.67 [2024-05-12 13:24:20,271 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 222 flow. Second operand 5 states and 201 transitions. [2024-05-12 13:24:20,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 133 transitions, 684 flow [2024-05-12 13:24:20,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 133 transitions, 660 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-05-12 13:24:20,281 INFO L231 Difference]: Finished difference. Result has 75 places, 82 transitions, 383 flow [2024-05-12 13:24:20,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=383, PETRI_PLACES=75, PETRI_TRANSITIONS=82} [2024-05-12 13:24:20,283 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 7 predicate places. [2024-05-12 13:24:20,283 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 82 transitions, 383 flow [2024-05-12 13:24:20,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 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) [2024-05-12 13:24:20,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:20,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:20,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:24:20,284 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:24:20,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:20,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1728409357, now seen corresponding path program 1 times [2024-05-12 13:24:20,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:20,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734084736] [2024-05-12 13:24:20,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:20,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:21,625 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 13:24:21,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:21,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734084736] [2024-05-12 13:24:21,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734084736] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:21,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:21,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:24:21,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374268176] [2024-05-12 13:24:21,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:21,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:24:21,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:21,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:24:21,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:24:21,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-05-12 13:24:21,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 82 transitions, 383 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 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 13:24:21,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:21,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-05-12 13:24:21,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:25,178 INFO L124 PetriNetUnfolderBase]: 25706/35445 cut-off events. [2024-05-12 13:24:25,178 INFO L125 PetriNetUnfolderBase]: For 37102/37124 co-relation queries the response was YES. [2024-05-12 13:24:25,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100487 conditions, 35445 events. 25706/35445 cut-off events. For 37102/37124 co-relation queries the response was YES. Maximal size of possible extension queue 1355. Compared 226362 event pairs, 9764 based on Foata normal form. 50/34035 useless extension candidates. Maximal degree in co-relation 100467. Up to 33535 conditions per place. [2024-05-12 13:24:25,416 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 109 selfloop transitions, 30 changer transitions 0/152 dead transitions. [2024-05-12 13:24:25,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 152 transitions, 881 flow [2024-05-12 13:24:25,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:24:25,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:24:25,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 237 transitions. [2024-05-12 13:24:25,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6583333333333333 [2024-05-12 13:24:25,419 INFO L175 Difference]: Start difference. First operand has 75 places, 82 transitions, 383 flow. Second operand 6 states and 237 transitions. [2024-05-12 13:24:25,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 152 transitions, 881 flow [2024-05-12 13:24:25,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 152 transitions, 865 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-05-12 13:24:25,436 INFO L231 Difference]: Finished difference. Result has 80 places, 85 transitions, 471 flow [2024-05-12 13:24:25,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=471, PETRI_PLACES=80, PETRI_TRANSITIONS=85} [2024-05-12 13:24:25,437 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 12 predicate places. [2024-05-12 13:24:25,438 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 85 transitions, 471 flow [2024-05-12 13:24:25,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 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 13:24:25,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:25,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:25,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:24:25,439 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:24:25,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:25,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1732739695, now seen corresponding path program 1 times [2024-05-12 13:24:25,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:25,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742933873] [2024-05-12 13:24:25,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:25,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:26,757 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 13:24:26,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:26,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742933873] [2024-05-12 13:24:26,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742933873] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:26,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:26,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:24:26,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837066763] [2024-05-12 13:24:26,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:26,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:24:26,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:26,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:24:26,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:24:26,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-05-12 13:24:26,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 85 transitions, 471 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 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 13:24:26,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:26,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-05-12 13:24:26,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:30,695 INFO L124 PetriNetUnfolderBase]: 25329/35388 cut-off events. [2024-05-12 13:24:30,695 INFO L125 PetriNetUnfolderBase]: For 50242/50276 co-relation queries the response was YES. [2024-05-12 13:24:30,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107144 conditions, 35388 events. 25329/35388 cut-off events. For 50242/50276 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 228067 event pairs, 10255 based on Foata normal form. 3/33942 useless extension candidates. Maximal degree in co-relation 107121. Up to 33556 conditions per place. [2024-05-12 13:24:31,136 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 89 selfloop transitions, 12 changer transitions 0/114 dead transitions. [2024-05-12 13:24:31,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 114 transitions, 741 flow [2024-05-12 13:24:31,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:24:31,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:24:31,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2024-05-12 13:24:31,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-05-12 13:24:31,138 INFO L175 Difference]: Start difference. First operand has 80 places, 85 transitions, 471 flow. Second operand 5 states and 168 transitions. [2024-05-12 13:24:31,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 114 transitions, 741 flow [2024-05-12 13:24:31,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 114 transitions, 663 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-05-12 13:24:31,161 INFO L231 Difference]: Finished difference. Result has 81 places, 85 transitions, 429 flow [2024-05-12 13:24:31,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=429, PETRI_PLACES=81, PETRI_TRANSITIONS=85} [2024-05-12 13:24:31,164 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 13 predicate places. [2024-05-12 13:24:31,164 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 85 transitions, 429 flow [2024-05-12 13:24:31,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 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 13:24:31,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:31,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:31,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:24:31,165 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:24:31,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:31,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1339155050, now seen corresponding path program 1 times [2024-05-12 13:24:31,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:31,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665579439] [2024-05-12 13:24:31,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:31,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:32,481 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 13:24:32,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:32,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665579439] [2024-05-12 13:24:32,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665579439] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:32,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:32,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:24:32,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168897870] [2024-05-12 13:24:32,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:32,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:24:32,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:32,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:24:32,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:24:32,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 60 [2024-05-12 13:24:32,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 85 transitions, 429 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 13:24:32,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:32,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 60 [2024-05-12 13:24:32,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:36,592 INFO L124 PetriNetUnfolderBase]: 28907/39233 cut-off events. [2024-05-12 13:24:36,593 INFO L125 PetriNetUnfolderBase]: For 61616/61648 co-relation queries the response was YES. [2024-05-12 13:24:36,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119289 conditions, 39233 events. 28907/39233 cut-off events. For 61616/61648 co-relation queries the response was YES. Maximal size of possible extension queue 1440. Compared 242644 event pairs, 11796 based on Foata normal form. 36/37832 useless extension candidates. Maximal degree in co-relation 119264. Up to 38031 conditions per place. [2024-05-12 13:24:36,837 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 95 selfloop transitions, 31 changer transitions 0/138 dead transitions. [2024-05-12 13:24:36,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 138 transitions, 863 flow [2024-05-12 13:24:36,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:24:36,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:24:36,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 208 transitions. [2024-05-12 13:24:36,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-05-12 13:24:36,839 INFO L175 Difference]: Start difference. First operand has 81 places, 85 transitions, 429 flow. Second operand 6 states and 208 transitions. [2024-05-12 13:24:36,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 138 transitions, 863 flow [2024-05-12 13:24:36,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 138 transitions, 827 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 13:24:36,859 INFO L231 Difference]: Finished difference. Result has 83 places, 90 transitions, 511 flow [2024-05-12 13:24:36,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=511, PETRI_PLACES=83, PETRI_TRANSITIONS=90} [2024-05-12 13:24:36,860 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 15 predicate places. [2024-05-12 13:24:36,860 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 90 transitions, 511 flow [2024-05-12 13:24:36,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 13:24:36,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:36,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:36,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:24:36,861 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:24:36,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:36,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1437478876, now seen corresponding path program 2 times [2024-05-12 13:24:36,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:36,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198901201] [2024-05-12 13:24:36,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:36,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:38,346 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 13:24:38,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:38,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198901201] [2024-05-12 13:24:38,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198901201] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:38,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:38,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:24:38,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943174021] [2024-05-12 13:24:38,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:38,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:24:38,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:38,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:24:38,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:24:38,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 60 [2024-05-12 13:24:38,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 90 transitions, 511 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 13:24:38,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:38,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 60 [2024-05-12 13:24:38,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:42,614 INFO L124 PetriNetUnfolderBase]: 28852/39158 cut-off events. [2024-05-12 13:24:42,614 INFO L125 PetriNetUnfolderBase]: For 67821/67855 co-relation queries the response was YES. [2024-05-12 13:24:42,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120445 conditions, 39158 events. 28852/39158 cut-off events. For 67821/67855 co-relation queries the response was YES. Maximal size of possible extension queue 1440. Compared 242099 event pairs, 11822 based on Foata normal form. 35/37758 useless extension candidates. Maximal degree in co-relation 120420. Up to 37952 conditions per place. [2024-05-12 13:24:42,846 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 88 selfloop transitions, 32 changer transitions 0/132 dead transitions. [2024-05-12 13:24:42,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 132 transitions, 849 flow [2024-05-12 13:24:42,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:24:42,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:24:42,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 203 transitions. [2024-05-12 13:24:42,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5638888888888889 [2024-05-12 13:24:42,848 INFO L175 Difference]: Start difference. First operand has 83 places, 90 transitions, 511 flow. Second operand 6 states and 203 transitions. [2024-05-12 13:24:42,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 132 transitions, 849 flow [2024-05-12 13:24:42,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 132 transitions, 792 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-05-12 13:24:42,876 INFO L231 Difference]: Finished difference. Result has 86 places, 90 transitions, 530 flow [2024-05-12 13:24:42,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=530, PETRI_PLACES=86, PETRI_TRANSITIONS=90} [2024-05-12 13:24:42,877 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 18 predicate places. [2024-05-12 13:24:42,877 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 90 transitions, 530 flow [2024-05-12 13:24:42,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 13:24:42,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:42,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:42,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:24:42,878 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:24:42,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:42,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1442542882, now seen corresponding path program 1 times [2024-05-12 13:24:42,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:42,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504928330] [2024-05-12 13:24:42,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:42,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:44,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:44,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:44,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504928330] [2024-05-12 13:24:44,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504928330] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:44,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:44,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:24:44,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74483513] [2024-05-12 13:24:44,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:44,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:24:44,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:44,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:24:44,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:24:44,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 60 [2024-05-12 13:24:44,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 90 transitions, 530 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 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 13:24:44,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:44,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 60 [2024-05-12 13:24:44,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand