./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix004.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/mix004.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/mix004.opt.i ./goblint.2024-05-07_14-17-48.files/protection/mix004.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 13:02:38,866 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:02:38,907 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:02:38,910 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:02:38,911 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:02:38,925 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:02:38,926 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:02:38,926 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:02:38,926 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:02:38,927 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:02:38,927 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:02:38,927 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:02:38,928 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:02:38,928 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:02:38,928 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:02:38,928 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:02:38,929 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:02:38,929 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:02:38,929 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:02:38,929 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:02:38,930 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:02:38,930 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:02:38,930 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:02:38,931 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:02:38,931 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:02:38,931 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:02:38,931 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:02:38,931 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:02:38,932 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:02:38,932 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:02:38,932 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:02:38,932 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:02:38,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:02:38,933 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:02:38,933 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:02:38,933 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:02:38,933 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:02:38,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:02:38,934 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:02:38,934 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:02:38,934 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:02:38,934 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:02:38,934 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:02:38,934 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:02:39,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:02:39,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:02:39,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:02:39,120 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:02:39,120 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:02:39,121 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix004.opt.yml/witness.yml [2024-05-12 13:02:39,308 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:02:39,309 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:02:39,309 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix004.opt.i [2024-05-12 13:02:40,249 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:02:40,445 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:02:40,445 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix004.opt.i [2024-05-12 13:02:40,475 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2f874e93/c0d7b47e01e741c887fd1f33e3adf940/FLAGc5bdd25db [2024-05-12 13:02:40,485 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2f874e93/c0d7b47e01e741c887fd1f33e3adf940 [2024-05-12 13:02:40,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:02:40,487 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:02:40,488 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:02:40,488 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:02:40,491 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:02:40,492 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:02:39" (1/2) ... [2024-05-12 13:02:40,494 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@457757f1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:02:40, skipping insertion in model container [2024-05-12 13:02:40,494 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:02:39" (1/2) ... [2024-05-12 13:02:40,495 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6557246d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:02:40, skipping insertion in model container [2024-05-12 13:02:40,495 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:02:40" (2/2) ... [2024-05-12 13:02:40,496 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@457757f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:02:40, skipping insertion in model container [2024-05-12 13:02:40,496 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:02:40" (2/2) ... [2024-05-12 13:02:40,496 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:02:40,593 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:02:40,595 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] ((((((((((((((((((((((((! multithreaded || z$r_buff0_thd2 == (_Bool)0) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1))) [2024-05-12 13:02:40,595 INFO L97 edCorrectnessWitness]: Location invariant before [L879-L879] ((((((((((((((((((((((((! multithreaded || z$r_buff0_thd2 == (_Bool)0) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1))) [2024-05-12 13:02:40,595 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] ((((((((((((((((((((((((! multithreaded || z$r_buff0_thd2 == (_Bool)0) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1))) [2024-05-12 13:02:40,595 INFO L97 edCorrectnessWitness]: Location invariant before [L878-L878] ((((((((((((((((((((((((! multithreaded || z$r_buff0_thd2 == (_Bool)0) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1))) [2024-05-12 13:02:40,595 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:02:40,596 INFO L106 edCorrectnessWitness]: ghost_update [L872-L872] multithreaded = 1; [2024-05-12 13:02:40,630 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:02:40,760 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/mix004.opt.i[944,957] [2024-05-12 13:02:40,922 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:02:40,936 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:02:40,965 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/mix004.opt.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:02:41,060 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:02:41,086 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:02:41,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:02:41 WrapperNode [2024-05-12 13:02:41,087 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:02:41,087 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:02:41,087 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:02:41,087 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:02:41,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:02:41" (1/1) ... [2024-05-12 13:02:41,106 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:02:41" (1/1) ... [2024-05-12 13:02:41,137 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 173 [2024-05-12 13:02:41,142 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:02:41,143 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:02:41,143 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:02:41,143 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:02:41,151 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:02:41" (1/1) ... [2024-05-12 13:02:41,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:02:41" (1/1) ... [2024-05-12 13:02:41,154 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:02:41" (1/1) ... [2024-05-12 13:02:41,180 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 13:02:41,181 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:02:41" (1/1) ... [2024-05-12 13:02:41,181 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:02:41" (1/1) ... [2024-05-12 13:02:41,209 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:02:41" (1/1) ... [2024-05-12 13:02:41,212 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:02:41" (1/1) ... [2024-05-12 13:02:41,215 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:02:41" (1/1) ... [2024-05-12 13:02:41,222 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:02:41" (1/1) ... [2024-05-12 13:02:41,225 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:02:41,228 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:02:41,229 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:02:41,229 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:02:41,230 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:02:41" (1/1) ... [2024-05-12 13:02:41,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:02:41,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:02:41,255 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 13:02:41,264 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 13:02:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:02:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:02:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:02:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:02:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 13:02:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:02:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:02:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:02:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:02:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:02:41,287 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:02:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:02:41,288 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:02:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:02:41,289 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:02:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-05-12 13:02:41,289 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-05-12 13:02:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:02:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:02:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:02:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:02:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 13:02:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:02:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:02:41,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:02:41,291 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 13:02:41,441 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:02:41,442 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:02:41,774 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:02:41,774 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:02:41,951 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:02:41,951 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:02:41,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:02:41 BoogieIcfgContainer [2024-05-12 13:02:41,952 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:02:41,954 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:02:41,954 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:02:41,956 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:02:41,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:02:39" (1/4) ... [2024-05-12 13:02:41,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f7df7c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:02:41, skipping insertion in model container [2024-05-12 13:02:41,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:02:40" (2/4) ... [2024-05-12 13:02:41,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f7df7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:02:41, skipping insertion in model container [2024-05-12 13:02:41,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:02:41" (3/4) ... [2024-05-12 13:02:41,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f7df7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:02:41, skipping insertion in model container [2024-05-12 13:02:41,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:02:41" (4/4) ... [2024-05-12 13:02:41,959 INFO L112 eAbstractionObserver]: Analyzing ICFG mix004.opt.i [2024-05-12 13:02:41,973 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:02:41,973 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-05-12 13:02:41,973 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:02:42,027 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:02:42,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 60 transitions, 136 flow [2024-05-12 13:02:42,082 INFO L124 PetriNetUnfolderBase]: 1/56 cut-off events. [2024-05-12 13:02:42,082 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:02:42,085 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 102 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 13:02:42,085 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 60 transitions, 136 flow [2024-05-12 13:02:42,088 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 56 transitions, 124 flow [2024-05-12 13:02:42,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:02:42,127 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;@28c6bc15, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:02:42,127 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-05-12 13:02:42,130 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:02:42,144 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:02:42,144 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:02:42,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:42,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:02:42,146 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 13:02:42,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:42,178 INFO L85 PathProgramCache]: Analyzing trace with hash -416051816, now seen corresponding path program 1 times [2024-05-12 13:02:42,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:42,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612045565] [2024-05-12 13:02:42,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:42,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:43,279 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 13:02:43,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:43,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612045565] [2024-05-12 13:02:43,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612045565] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:43,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:43,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:02:43,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966021466] [2024-05-12 13:02:43,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:43,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:02:43,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:43,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:02:43,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:02:43,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-05-12 13:02:43,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 13:02:43,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:43,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-05-12 13:02:43,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:45,274 INFO L124 PetriNetUnfolderBase]: 12650/19245 cut-off events. [2024-05-12 13:02:45,274 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2024-05-12 13:02:45,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36422 conditions, 19245 events. 12650/19245 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 820. Compared 137087 event pairs, 10423 based on Foata normal form. 481/18363 useless extension candidates. Maximal degree in co-relation 36406. Up to 16952 conditions per place. [2024-05-12 13:02:45,393 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 51 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2024-05-12 13:02:45,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 74 transitions, 283 flow [2024-05-12 13:02:45,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:02:45,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:02:45,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-05-12 13:02:45,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-05-12 13:02:45,406 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 124 flow. Second operand 3 states and 126 transitions. [2024-05-12 13:02:45,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 74 transitions, 283 flow [2024-05-12 13:02:45,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 74 transitions, 276 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 13:02:45,415 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 164 flow [2024-05-12 13:02:45,417 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 13:02:45,420 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2024-05-12 13:02:45,420 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 164 flow [2024-05-12 13:02:45,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 13:02:45,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:45,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:45,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:02:45,421 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 13:02:45,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:45,422 INFO L85 PathProgramCache]: Analyzing trace with hash -393773065, now seen corresponding path program 1 times [2024-05-12 13:02:45,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:45,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745890770] [2024-05-12 13:02:45,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:45,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:46,369 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 13:02:46,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:46,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745890770] [2024-05-12 13:02:46,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745890770] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:46,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:46,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:02:46,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791535998] [2024-05-12 13:02:46,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:46,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:02:46,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:46,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:02:46,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:02:46,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 60 [2024-05-12 13:02:46,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:46,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:46,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 60 [2024-05-12 13:02:46,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:48,125 INFO L124 PetriNetUnfolderBase]: 14407/21740 cut-off events. [2024-05-12 13:02:48,125 INFO L125 PetriNetUnfolderBase]: For 3894/3894 co-relation queries the response was YES. [2024-05-12 13:02:48,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46507 conditions, 21740 events. 14407/21740 cut-off events. For 3894/3894 co-relation queries the response was YES. Maximal size of possible extension queue 929. Compared 154979 event pairs, 10359 based on Foata normal form. 4/20478 useless extension candidates. Maximal degree in co-relation 46492. Up to 19236 conditions per place. [2024-05-12 13:02:48,371 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 66 selfloop transitions, 11 changer transitions 0/93 dead transitions. [2024-05-12 13:02:48,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 93 transitions, 404 flow [2024-05-12 13:02:48,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:02:48,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:02:48,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2024-05-12 13:02:48,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6708333333333333 [2024-05-12 13:02:48,382 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 164 flow. Second operand 4 states and 161 transitions. [2024-05-12 13:02:48,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 93 transitions, 404 flow [2024-05-12 13:02:48,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 93 transitions, 398 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:02:48,384 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 222 flow [2024-05-12 13:02:48,384 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 13:02:48,385 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 2 predicate places. [2024-05-12 13:02:48,385 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 222 flow [2024-05-12 13:02:48,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:48,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:48,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:48,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:02:48,386 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 13:02:48,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:48,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1335659352, now seen corresponding path program 1 times [2024-05-12 13:02:48,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:48,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434448257] [2024-05-12 13:02:48,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:48,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:49,288 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 13:02:49,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:49,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434448257] [2024-05-12 13:02:49,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434448257] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:49,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:49,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:02:49,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404226136] [2024-05-12 13:02:49,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:49,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:02:49,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:49,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:02:49,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:02:49,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-05-12 13:02:49,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 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 13:02:49,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:49,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-05-12 13:02:49,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:51,675 INFO L124 PetriNetUnfolderBase]: 18290/24860 cut-off events. [2024-05-12 13:02:51,675 INFO L125 PetriNetUnfolderBase]: For 11538/11538 co-relation queries the response was YES. [2024-05-12 13:02:51,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62000 conditions, 24860 events. 18290/24860 cut-off events. For 11538/11538 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 152022 event pairs, 7414 based on Foata normal form. 8/24046 useless extension candidates. Maximal degree in co-relation 61983. Up to 24240 conditions per place. [2024-05-12 13:02:51,794 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 92 selfloop transitions, 20 changer transitions 0/127 dead transitions. [2024-05-12 13:02:51,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 127 transitions, 624 flow [2024-05-12 13:02:51,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:02:51,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:02:51,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 230 transitions. [2024-05-12 13:02:51,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-05-12 13:02:51,800 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 222 flow. Second operand 6 states and 230 transitions. [2024-05-12 13:02:51,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 127 transitions, 624 flow [2024-05-12 13:02:51,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 127 transitions, 588 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-05-12 13:02:51,805 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 301 flow [2024-05-12 13:02:51,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=301, PETRI_PLACES=74, PETRI_TRANSITIONS=73} [2024-05-12 13:02:51,806 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 6 predicate places. [2024-05-12 13:02:51,806 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 301 flow [2024-05-12 13:02:51,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 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 13:02:51,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:51,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:51,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:02:51,807 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:02:51,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:51,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1523801825, now seen corresponding path program 1 times [2024-05-12 13:02:51,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:51,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012595868] [2024-05-12 13:02:51,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:51,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:52,704 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 13:02:52,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:52,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012595868] [2024-05-12 13:02:52,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012595868] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:52,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:52,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:02:52,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527271867] [2024-05-12 13:02:52,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:52,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:02:52,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:52,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:02:52,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:02:52,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-05-12 13:02:52,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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 13:02:52,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:52,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-05-12 13:02:52,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:55,441 INFO L124 PetriNetUnfolderBase]: 18280/25559 cut-off events. [2024-05-12 13:02:55,441 INFO L125 PetriNetUnfolderBase]: For 21218/21218 co-relation queries the response was YES. [2024-05-12 13:02:55,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69138 conditions, 25559 events. 18280/25559 cut-off events. For 21218/21218 co-relation queries the response was YES. Maximal size of possible extension queue 984. Compared 162317 event pairs, 8075 based on Foata normal form. 3/24666 useless extension candidates. Maximal degree in co-relation 69119. Up to 24317 conditions per place. [2024-05-12 13:02:55,555 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 78 selfloop transitions, 12 changer transitions 0/105 dead transitions. [2024-05-12 13:02:55,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 105 transitions, 575 flow [2024-05-12 13:02:55,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:02:55,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:02:55,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 174 transitions. [2024-05-12 13:02:55,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-05-12 13:02:55,561 INFO L175 Difference]: Start difference. First operand has 74 places, 73 transitions, 301 flow. Second operand 5 states and 174 transitions. [2024-05-12 13:02:55,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 105 transitions, 575 flow [2024-05-12 13:02:55,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 105 transitions, 526 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-05-12 13:02:55,568 INFO L231 Difference]: Finished difference. Result has 76 places, 78 transitions, 328 flow [2024-05-12 13:02:55,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=76, PETRI_TRANSITIONS=78} [2024-05-12 13:02:55,569 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 8 predicate places. [2024-05-12 13:02:55,569 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 78 transitions, 328 flow [2024-05-12 13:02:55,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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 13:02:55,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:55,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:55,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:02:55,570 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 13:02:55,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:55,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1546818220, now seen corresponding path program 1 times [2024-05-12 13:02:55,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:55,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870428938] [2024-05-12 13:02:55,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:55,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:56,561 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 13:02:56,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:56,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870428938] [2024-05-12 13:02:56,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870428938] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:56,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:56,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:02:56,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096677859] [2024-05-12 13:02:56,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:56,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:02:56,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:56,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:02:56,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:02:56,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 60 [2024-05-12 13:02:56,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 78 transitions, 328 flow. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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 13:02:56,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:56,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 60 [2024-05-12 13:02:56,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:59,629 INFO L124 PetriNetUnfolderBase]: 20909/28422 cut-off events. [2024-05-12 13:02:59,629 INFO L125 PetriNetUnfolderBase]: For 37007/37029 co-relation queries the response was YES. [2024-05-12 13:02:59,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83977 conditions, 28422 events. 20909/28422 cut-off events. For 37007/37029 co-relation queries the response was YES. Maximal size of possible extension queue 1074. Compared 174137 event pairs, 8924 based on Foata normal form. 5/27601 useless extension candidates. Maximal degree in co-relation 83956. Up to 27675 conditions per place. [2024-05-12 13:02:59,785 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 93 selfloop transitions, 26 changer transitions 0/133 dead transitions. [2024-05-12 13:02:59,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 133 transitions, 772 flow [2024-05-12 13:02:59,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:02:59,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:02:59,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 213 transitions. [2024-05-12 13:02:59,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5916666666666667 [2024-05-12 13:02:59,787 INFO L175 Difference]: Start difference. First operand has 76 places, 78 transitions, 328 flow. Second operand 6 states and 213 transitions. [2024-05-12 13:02:59,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 133 transitions, 772 flow [2024-05-12 13:02:59,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 133 transitions, 734 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-05-12 13:02:59,795 INFO L231 Difference]: Finished difference. Result has 79 places, 88 transitions, 440 flow [2024-05-12 13:02:59,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=440, PETRI_PLACES=79, PETRI_TRANSITIONS=88} [2024-05-12 13:02:59,796 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 11 predicate places. [2024-05-12 13:02:59,796 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 88 transitions, 440 flow [2024-05-12 13:02:59,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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 13:02:59,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:59,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:59,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:02:59,797 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 13:02:59,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:59,798 INFO L85 PathProgramCache]: Analyzing trace with hash 248223202, now seen corresponding path program 2 times [2024-05-12 13:02:59,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:59,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789893175] [2024-05-12 13:02:59,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:59,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:00,868 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 13:03:00,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:00,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789893175] [2024-05-12 13:03:00,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789893175] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:00,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:00,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:03:00,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957810937] [2024-05-12 13:03:00,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:00,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:03:00,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:00,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:03:00,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:03:00,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 60 [2024-05-12 13:03:00,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 88 transitions, 440 flow. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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 13:03:00,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:00,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 60 [2024-05-12 13:03:00,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:03,668 INFO L124 PetriNetUnfolderBase]: 20899/28434 cut-off events. [2024-05-12 13:03:03,668 INFO L125 PetriNetUnfolderBase]: For 52942/52994 co-relation queries the response was YES. [2024-05-12 13:03:03,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90756 conditions, 28434 events. 20899/28434 cut-off events. For 52942/52994 co-relation queries the response was YES. Maximal size of possible extension queue 1074. Compared 174447 event pairs, 8927 based on Foata normal form. 35/27646 useless extension candidates. Maximal degree in co-relation 90734. Up to 27665 conditions per place. [2024-05-12 13:03:03,844 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 87 selfloop transitions, 26 changer transitions 0/127 dead transitions. [2024-05-12 13:03:03,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 127 transitions, 758 flow [2024-05-12 13:03:03,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:03:03,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:03:03,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2024-05-12 13:03:03,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-05-12 13:03:03,856 INFO L175 Difference]: Start difference. First operand has 79 places, 88 transitions, 440 flow. Second operand 6 states and 207 transitions. [2024-05-12 13:03:03,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 127 transitions, 758 flow [2024-05-12 13:03:03,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 127 transitions, 696 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-05-12 13:03:03,892 INFO L231 Difference]: Finished difference. Result has 83 places, 88 transitions, 442 flow [2024-05-12 13:03:03,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=442, PETRI_PLACES=83, PETRI_TRANSITIONS=88} [2024-05-12 13:03:03,892 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 15 predicate places. [2024-05-12 13:03:03,892 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 88 transitions, 442 flow [2024-05-12 13:03:03,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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 13:03:03,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:03,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:03,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:03:03,893 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 13:03:03,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:03,894 INFO L85 PathProgramCache]: Analyzing trace with hash 463316884, now seen corresponding path program 1 times [2024-05-12 13:03:03,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:03,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537871305] [2024-05-12 13:03:03,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:03,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:05,113 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 13:03:05,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:05,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537871305] [2024-05-12 13:03:05,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537871305] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:05,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:05,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:03:05,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203873707] [2024-05-12 13:03:05,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:05,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:03:05,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:05,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:03:05,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:03:05,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 60 [2024-05-12 13:03:05,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 88 transitions, 442 flow. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 13:03:05,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:05,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 60 [2024-05-12 13:03:05,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:08,497 INFO L124 PetriNetUnfolderBase]: 21098/28736 cut-off events. [2024-05-12 13:03:08,497 INFO L125 PetriNetUnfolderBase]: For 55903/55951 co-relation queries the response was YES. [2024-05-12 13:03:08,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91467 conditions, 28736 events. 21098/28736 cut-off events. For 55903/55951 co-relation queries the response was YES. Maximal size of possible extension queue 1075. Compared 176350 event pairs, 8912 based on Foata normal form. 7/27893 useless extension candidates. Maximal degree in co-relation 91443. Up to 27885 conditions per place. [2024-05-12 13:03:08,684 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 122 selfloop transitions, 40 changer transitions 0/176 dead transitions. [2024-05-12 13:03:08,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 176 transitions, 1066 flow [2024-05-12 13:03:08,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:03:08,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:03:08,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 282 transitions. [2024-05-12 13:03:08,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5875 [2024-05-12 13:03:08,686 INFO L175 Difference]: Start difference. First operand has 83 places, 88 transitions, 442 flow. Second operand 8 states and 282 transitions. [2024-05-12 13:03:08,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 176 transitions, 1066 flow [2024-05-12 13:03:08,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 176 transitions, 974 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-05-12 13:03:08,714 INFO L231 Difference]: Finished difference. Result has 87 places, 112 transitions, 634 flow [2024-05-12 13:03:08,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=634, PETRI_PLACES=87, PETRI_TRANSITIONS=112} [2024-05-12 13:03:08,715 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 19 predicate places. [2024-05-12 13:03:08,715 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 112 transitions, 634 flow [2024-05-12 13:03:08,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 13:03:08,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:08,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:08,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:03:08,716 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 13:03:08,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:08,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1894730612, now seen corresponding path program 2 times [2024-05-12 13:03:08,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:08,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143746509] [2024-05-12 13:03:08,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:08,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:09,770 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 13:03:09,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:09,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143746509] [2024-05-12 13:03:09,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143746509] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:09,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:09,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:03:09,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037078523] [2024-05-12 13:03:09,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:09,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:03:09,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:09,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:03:09,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:03:09,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 60 [2024-05-12 13:03:09,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 112 transitions, 634 flow. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 13:03:09,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:09,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 60 [2024-05-12 13:03:09,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:13,249 INFO L124 PetriNetUnfolderBase]: 21147/28731 cut-off events. [2024-05-12 13:03:13,250 INFO L125 PetriNetUnfolderBase]: For 77321/77405 co-relation queries the response was YES. [2024-05-12 13:03:13,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99557 conditions, 28731 events. 21147/28731 cut-off events. For 77321/77405 co-relation queries the response was YES. Maximal size of possible extension queue 1070. Compared 174815 event pairs, 8697 based on Foata normal form. 11/27887 useless extension candidates. Maximal degree in co-relation 99531. Up to 27909 conditions per place. [2024-05-12 13:03:13,418 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 120 selfloop transitions, 42 changer transitions 0/176 dead transitions. [2024-05-12 13:03:13,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 176 transitions, 1196 flow [2024-05-12 13:03:13,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:03:13,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:03:13,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 246 transitions. [2024-05-12 13:03:13,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2024-05-12 13:03:13,420 INFO L175 Difference]: Start difference. First operand has 87 places, 112 transitions, 634 flow. Second operand 7 states and 246 transitions. [2024-05-12 13:03:13,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 176 transitions, 1196 flow [2024-05-12 13:03:13,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 176 transitions, 1120 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-05-12 13:03:13,460 INFO L231 Difference]: Finished difference. Result has 91 places, 117 transitions, 727 flow [2024-05-12 13:03:13,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=727, PETRI_PLACES=91, PETRI_TRANSITIONS=117} [2024-05-12 13:03:13,461 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 23 predicate places. [2024-05-12 13:03:13,461 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 117 transitions, 727 flow [2024-05-12 13:03:13,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 13:03:13,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:13,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:13,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:03:13,462 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:03:13,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:13,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1894735262, now seen corresponding path program 3 times [2024-05-12 13:03:13,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:13,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241363088] [2024-05-12 13:03:13,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:13,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:14,643 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 13:03:14,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:14,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241363088] [2024-05-12 13:03:14,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241363088] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:14,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:14,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:03:14,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027643119] [2024-05-12 13:03:14,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:14,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:03:14,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:14,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:03:14,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:03:14,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 60 [2024-05-12 13:03:14,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 117 transitions, 727 flow. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 13:03:14,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:14,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 60 [2024-05-12 13:03:14,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:17,941 INFO L124 PetriNetUnfolderBase]: 21196/28809 cut-off events. [2024-05-12 13:03:17,941 INFO L125 PetriNetUnfolderBase]: For 101988/102056 co-relation queries the response was YES. [2024-05-12 13:03:18,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106725 conditions, 28809 events. 21196/28809 cut-off events. For 101988/102056 co-relation queries the response was YES. Maximal size of possible extension queue 1070. Compared 176218 event pairs, 8559 based on Foata normal form. 31/27971 useless extension candidates. Maximal degree in co-relation 106698. Up to 27830 conditions per place. [2024-05-12 13:03:18,159 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 106 selfloop transitions, 63 changer transitions 0/183 dead transitions. [2024-05-12 13:03:18,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 183 transitions, 1403 flow [2024-05-12 13:03:18,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:03:18,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:03:18,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 250 transitions. [2024-05-12 13:03:18,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-05-12 13:03:18,160 INFO L175 Difference]: Start difference. First operand has 91 places, 117 transitions, 727 flow. Second operand 7 states and 250 transitions. [2024-05-12 13:03:18,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 183 transitions, 1403 flow [2024-05-12 13:03:18,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 183 transitions, 1254 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-05-12 13:03:18,220 INFO L231 Difference]: Finished difference. Result has 93 places, 127 transitions, 864 flow [2024-05-12 13:03:18,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=864, PETRI_PLACES=93, PETRI_TRANSITIONS=127} [2024-05-12 13:03:18,222 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 25 predicate places. [2024-05-12 13:03:18,222 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 127 transitions, 864 flow [2024-05-12 13:03:18,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 13:03:18,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:18,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:18,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 13:03:18,224 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:03:18,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:18,224 INFO L85 PathProgramCache]: Analyzing trace with hash -886076912, now seen corresponding path program 4 times [2024-05-12 13:03:18,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:18,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071784494] [2024-05-12 13:03:18,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:18,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:19,220 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 13:03:19,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:19,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071784494] [2024-05-12 13:03:19,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071784494] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:19,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:19,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:03:19,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763605229] [2024-05-12 13:03:19,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:19,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:03:19,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:19,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:03:19,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:03:19,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 60 [2024-05-12 13:03:19,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 127 transitions, 864 flow. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 13:03:19,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:19,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 60 [2024-05-12 13:03:19,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:22,657 INFO L124 PetriNetUnfolderBase]: 21186/28819 cut-off events. [2024-05-12 13:03:22,657 INFO L125 PetriNetUnfolderBase]: For 102789/102869 co-relation queries the response was YES. [2024-05-12 13:03:22,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106674 conditions, 28819 events. 21186/28819 cut-off events. For 102789/102869 co-relation queries the response was YES. Maximal size of possible extension queue 1070. Compared 175706 event pairs, 8569 based on Foata normal form. 29/27972 useless extension candidates. Maximal degree in co-relation 106646. Up to 27820 conditions per place. [2024-05-12 13:03:22,896 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 101 selfloop transitions, 63 changer transitions 0/178 dead transitions. [2024-05-12 13:03:22,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 178 transitions, 1338 flow [2024-05-12 13:03:22,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:03:22,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:03:22,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 244 transitions. [2024-05-12 13:03:22,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2024-05-12 13:03:22,897 INFO L175 Difference]: Start difference. First operand has 93 places, 127 transitions, 864 flow. Second operand 7 states and 244 transitions. [2024-05-12 13:03:22,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 178 transitions, 1338 flow [2024-05-12 13:03:22,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 178 transitions, 1230 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-05-12 13:03:22,952 INFO L231 Difference]: Finished difference. Result has 97 places, 127 transitions, 894 flow [2024-05-12 13:03:22,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=894, PETRI_PLACES=97, PETRI_TRANSITIONS=127} [2024-05-12 13:03:22,953 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 29 predicate places. [2024-05-12 13:03:22,953 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 127 transitions, 894 flow [2024-05-12 13:03:22,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 13:03:22,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:22,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:22,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 13:03:22,953 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:03:22,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:22,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1365763658, now seen corresponding path program 1 times [2024-05-12 13:03:22,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:22,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939019046] [2024-05-12 13:03:22,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:22,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:22,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:24,209 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 13:03:24,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:24,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939019046] [2024-05-12 13:03:24,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939019046] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:24,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:24,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:03:24,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866394045] [2024-05-12 13:03:24,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:24,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:03:24,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:24,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:03:24,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:03:24,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 60 [2024-05-12 13:03:24,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 127 transitions, 894 flow. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 13:03:24,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:24,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 60 [2024-05-12 13:03:24,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand