./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix005_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/mix005_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix005_tso.oepc.i ./goblint.2024-05-07_14-17-48.files/protection/mix005_tso.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 13:03:36,996 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:03:37,043 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:03:37,046 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:03:37,047 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:03:37,071 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:03:37,071 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:03:37,072 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:03:37,072 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:03:37,072 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:03:37,072 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:03:37,073 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:03:37,073 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:03:37,073 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:03:37,073 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:03:37,074 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:03:37,074 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:03:37,074 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:03:37,074 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:03:37,075 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:03:37,075 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:03:37,078 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:03:37,078 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:03:37,078 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:03:37,079 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:03:37,079 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:03:37,079 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:03:37,079 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:03:37,079 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:03:37,080 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:03:37,080 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:03:37,080 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:03:37,080 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:03:37,080 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:03:37,081 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:03:37,081 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:03:37,081 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:03:37,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:03:37,081 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:03:37,081 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:03:37,082 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:03:37,086 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:03:37,086 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:03:37,086 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:03:37,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:03:37,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:03:37,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:03:37,313 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:03:37,313 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:03:37,314 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix005_tso.oepc.i [2024-05-12 13:03:38,372 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:03:38,550 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:03:38,551 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix005_tso.oepc.i [2024-05-12 13:03:38,569 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e2f8413b/a3f8f692a0324d5891a841f4aa2b1519/FLAG94ae2a523 [2024-05-12 13:03:38,578 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e2f8413b/a3f8f692a0324d5891a841f4aa2b1519 [2024-05-12 13:03:38,580 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:03:38,581 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:03:38,581 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix005_tso.oepc.yml/witness.yml [2024-05-12 13:03:38,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:03:38,740 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:03:38,742 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:03:38,742 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:03:38,746 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:03:38,746 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:03:38" (1/2) ... [2024-05-12 13:03:38,748 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6faebf82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:03:38, skipping insertion in model container [2024-05-12 13:03:38,748 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:03:38" (1/2) ... [2024-05-12 13:03:38,749 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@641476c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:03:38, skipping insertion in model container [2024-05-12 13:03:38,749 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:03:38" (2/2) ... [2024-05-12 13:03:38,750 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6faebf82 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:03:38, skipping insertion in model container [2024-05-12 13:03:38,750 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:03:38" (2/2) ... [2024-05-12 13:03:38,750 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:03:38,848 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:03:38,850 INFO L97 edCorrectnessWitness]: Location invariant before [L861-L861] (((((((((((((((((((((((! multithreaded || x$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) [2024-05-12 13:03:38,850 INFO L97 edCorrectnessWitness]: Location invariant before [L865-L865] (((((((((((((((((((((((! multithreaded || x$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) [2024-05-12 13:03:38,850 INFO L97 edCorrectnessWitness]: Location invariant before [L866-L866] (((((((((((((((((((((((! multithreaded || x$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) [2024-05-12 13:03:38,850 INFO L97 edCorrectnessWitness]: Location invariant before [L863-L863] (((((((((((((((((((((((! multithreaded || x$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) [2024-05-12 13:03:38,850 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:03:38,851 INFO L106 edCorrectnessWitness]: ghost_update [L859-L859] multithreaded = 1; [2024-05-12 13:03:38,889 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:03:39,039 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/mix005_tso.oepc.i[949,962] [2024-05-12 13:03:39,186 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:03:39,200 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:03:39,224 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/mix005_tso.oepc.i[949,962] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:03:39,309 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:03:39,343 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:03:39,343 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:03:39 WrapperNode [2024-05-12 13:03:39,343 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:03:39,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:03:39,344 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:03:39,344 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:03:39,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:03:39" (1/1) ... [2024-05-12 13:03:39,363 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:03:39" (1/1) ... [2024-05-12 13:03:39,399 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 169 [2024-05-12 13:03:39,400 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:03:39,400 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:03:39,400 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:03:39,401 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:03:39,408 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:03:39" (1/1) ... [2024-05-12 13:03:39,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:03:39" (1/1) ... [2024-05-12 13:03:39,428 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:03:39" (1/1) ... [2024-05-12 13:03:39,447 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 13:03:39,447 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:03:39" (1/1) ... [2024-05-12 13:03:39,448 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:03:39" (1/1) ... [2024-05-12 13:03:39,472 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:03:39" (1/1) ... [2024-05-12 13:03:39,474 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:03:39" (1/1) ... [2024-05-12 13:03:39,476 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:03:39" (1/1) ... [2024-05-12 13:03:39,477 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:03:39" (1/1) ... [2024-05-12 13:03:39,480 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:03:39,481 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:03:39,481 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:03:39,481 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:03:39,482 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:03:39" (1/1) ... [2024-05-12 13:03:39,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:03:39,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:03:39,510 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 13:03:39,531 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 13:03:39,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:03:39,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:03:39,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:03:39,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:03:39,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 13:03:39,556 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:03:39,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:03:39,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:03:39,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:03:39,557 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:03:39,557 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:03:39,557 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:03:39,558 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:03:39,559 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:03:39,559 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:03:39,559 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-05-12 13:03:39,560 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-05-12 13:03:39,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:03:39,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:03:39,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:03:39,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:03:39,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 13:03:39,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:03:39,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:03:39,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:03:39,562 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 13:03:39,701 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:03:39,703 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:03:40,084 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:03:40,084 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:03:40,248 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:03:40,248 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:03:40,249 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:03:40 BoogieIcfgContainer [2024-05-12 13:03:40,249 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:03:40,250 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:03:40,251 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:03:40,253 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:03:40,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:03:38" (1/4) ... [2024-05-12 13:03:40,254 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cae2a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:03:40, skipping insertion in model container [2024-05-12 13:03:40,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:03:38" (2/4) ... [2024-05-12 13:03:40,254 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cae2a50 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:03:40, skipping insertion in model container [2024-05-12 13:03:40,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:03:39" (3/4) ... [2024-05-12 13:03:40,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cae2a50 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:03:40, skipping insertion in model container [2024-05-12 13:03:40,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:03:40" (4/4) ... [2024-05-12 13:03:40,256 INFO L112 eAbstractionObserver]: Analyzing ICFG mix005_tso.oepc.i [2024-05-12 13:03:40,270 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:03:40,270 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-05-12 13:03:40,270 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:03:40,318 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:03:40,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 60 transitions, 136 flow [2024-05-12 13:03:40,421 INFO L124 PetriNetUnfolderBase]: 1/56 cut-off events. [2024-05-12 13:03:40,422 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:03:40,426 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 98 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 13:03:40,426 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 60 transitions, 136 flow [2024-05-12 13:03:40,430 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 56 transitions, 124 flow [2024-05-12 13:03:40,441 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:03:40,448 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;@373dddba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:03:40,449 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-05-12 13:03:40,452 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:03:40,453 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:03:40,453 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:03:40,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:40,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:03:40,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:03:40,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:40,461 INFO L85 PathProgramCache]: Analyzing trace with hash -410166911, now seen corresponding path program 1 times [2024-05-12 13:03:40,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:40,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595965954] [2024-05-12 13:03:40,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:40,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:41,779 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 13:03:41,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:41,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595965954] [2024-05-12 13:03:41,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595965954] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:41,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:41,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:03:41,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084570918] [2024-05-12 13:03:41,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:41,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:03:41,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:41,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:03:41,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:03:41,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 60 [2024-05-12 13:03:41,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:41,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:41,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 60 [2024-05-12 13:03:41,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:45,190 INFO L124 PetriNetUnfolderBase]: 24644/36461 cut-off events. [2024-05-12 13:03:45,190 INFO L125 PetriNetUnfolderBase]: For 219/219 co-relation queries the response was YES. [2024-05-12 13:03:45,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69644 conditions, 36461 events. 24644/36461 cut-off events. For 219/219 co-relation queries the response was YES. Maximal size of possible extension queue 1394. Compared 259492 event pairs, 21287 based on Foata normal form. 901/34439 useless extension candidates. Maximal degree in co-relation 69628. Up to 32713 conditions per place. [2024-05-12 13:03:45,411 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 55 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2024-05-12 13:03:45,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 75 transitions, 293 flow [2024-05-12 13:03:45,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:03:45,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:03:45,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-05-12 13:03:45,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6722222222222223 [2024-05-12 13:03:45,421 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 124 flow. Second operand 3 states and 121 transitions. [2024-05-12 13:03:45,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 75 transitions, 293 flow [2024-05-12 13:03:45,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 75 transitions, 286 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 13:03:45,426 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 164 flow [2024-05-12 13:03:45,428 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 13:03:45,430 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2024-05-12 13:03:45,430 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 164 flow [2024-05-12 13:03:45,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:45,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:45,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:45,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:03:45,431 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:03:45,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:45,432 INFO L85 PathProgramCache]: Analyzing trace with hash 966622240, now seen corresponding path program 1 times [2024-05-12 13:03:45,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:45,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788278380] [2024-05-12 13:03:45,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:45,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:46,467 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 13:03:46,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:46,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788278380] [2024-05-12 13:03:46,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788278380] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:46,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:46,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:03:46,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588704345] [2024-05-12 13:03:46,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:46,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:03:46,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:46,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:03:46,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:03:46,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-05-12 13:03:46,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:46,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:46,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-05-12 13:03:46,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:50,180 INFO L124 PetriNetUnfolderBase]: 29443/42787 cut-off events. [2024-05-12 13:03:50,180 INFO L125 PetriNetUnfolderBase]: For 6707/6707 co-relation queries the response was YES. [2024-05-12 13:03:50,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91603 conditions, 42787 events. 29443/42787 cut-off events. For 6707/6707 co-relation queries the response was YES. Maximal size of possible extension queue 1590. Compared 298492 event pairs, 23449 based on Foata normal form. 4/40024 useless extension candidates. Maximal degree in co-relation 91588. Up to 38917 conditions per place. [2024-05-12 13:03:50,387 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 71 selfloop transitions, 11 changer transitions 0/95 dead transitions. [2024-05-12 13:03:50,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 95 transitions, 418 flow [2024-05-12 13:03:50,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:03:50,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:03:50,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 154 transitions. [2024-05-12 13:03:50,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2024-05-12 13:03:50,389 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 164 flow. Second operand 4 states and 154 transitions. [2024-05-12 13:03:50,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 95 transitions, 418 flow [2024-05-12 13:03:50,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 95 transitions, 412 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:03:50,392 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 222 flow [2024-05-12 13:03:50,392 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 13:03:50,392 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 2 predicate places. [2024-05-12 13:03:50,393 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 222 flow [2024-05-12 13:03:50,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:50,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:50,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:50,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:03:50,393 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:03:50,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:50,394 INFO L85 PathProgramCache]: Analyzing trace with hash -99480556, now seen corresponding path program 1 times [2024-05-12 13:03:50,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:50,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374603857] [2024-05-12 13:03:50,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:50,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:51,356 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 13:03:51,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:51,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374603857] [2024-05-12 13:03:51,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374603857] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:51,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:51,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:03:51,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194495053] [2024-05-12 13:03:51,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:51,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:03:51,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:51,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:03:51,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:03:51,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-05-12 13:03:51,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:51,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:51,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-05-12 13:03:51,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:55,072 INFO L124 PetriNetUnfolderBase]: 29417/43088 cut-off events. [2024-05-12 13:03:55,072 INFO L125 PetriNetUnfolderBase]: For 17976/17976 co-relation queries the response was YES. [2024-05-12 13:03:55,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101176 conditions, 43088 events. 29417/43088 cut-off events. For 17976/17976 co-relation queries the response was YES. Maximal size of possible extension queue 1603. Compared 307753 event pairs, 17041 based on Foata normal form. 8/40277 useless extension candidates. Maximal degree in co-relation 101159. Up to 38842 conditions per place. [2024-05-12 13:03:55,327 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 88 selfloop transitions, 19 changer transitions 0/120 dead transitions. [2024-05-12 13:03:55,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 120 transitions, 624 flow [2024-05-12 13:03:55,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:03:55,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:03:55,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 186 transitions. [2024-05-12 13:03:55,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-05-12 13:03:55,330 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 222 flow. Second operand 5 states and 186 transitions. [2024-05-12 13:03:55,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 120 transitions, 624 flow [2024-05-12 13:03:55,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 120 transitions, 578 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-05-12 13:03:55,335 INFO L231 Difference]: Finished difference. Result has 75 places, 83 transitions, 371 flow [2024-05-12 13:03:55,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=371, PETRI_PLACES=75, PETRI_TRANSITIONS=83} [2024-05-12 13:03:55,337 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 7 predicate places. [2024-05-12 13:03:55,337 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 83 transitions, 371 flow [2024-05-12 13:03:55,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:55,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:55,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:55,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:03:55,338 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:03:55,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:55,338 INFO L85 PathProgramCache]: Analyzing trace with hash -100014721, now seen corresponding path program 1 times [2024-05-12 13:03:55,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:55,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978963216] [2024-05-12 13:03:55,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:55,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:55,433 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 13:03:55,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:55,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978963216] [2024-05-12 13:03:55,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978963216] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:55,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:55,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:03:55,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102534554] [2024-05-12 13:03:55,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:55,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:03:55,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:55,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:03:55,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:03:55,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 60 [2024-05-12 13:03:55,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 83 transitions, 371 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 13:03:55,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:55,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 60 [2024-05-12 13:03:55,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:56,556 INFO L124 PetriNetUnfolderBase]: 6738/11900 cut-off events. [2024-05-12 13:03:56,556 INFO L125 PetriNetUnfolderBase]: For 5404/6572 co-relation queries the response was YES. [2024-05-12 13:03:56,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26272 conditions, 11900 events. 6738/11900 cut-off events. For 5404/6572 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 100713 event pairs, 3008 based on Foata normal form. 33/10924 useless extension candidates. Maximal degree in co-relation 26252. Up to 7674 conditions per place. [2024-05-12 13:03:56,630 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 47 selfloop transitions, 7 changer transitions 0/95 dead transitions. [2024-05-12 13:03:56,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 95 transitions, 478 flow [2024-05-12 13:03:56,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:03:56,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:03:56,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2024-05-12 13:03:56,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7611111111111111 [2024-05-12 13:03:56,632 INFO L175 Difference]: Start difference. First operand has 75 places, 83 transitions, 371 flow. Second operand 3 states and 137 transitions. [2024-05-12 13:03:56,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 95 transitions, 478 flow [2024-05-12 13:03:56,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 95 transitions, 466 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-05-12 13:03:56,636 INFO L231 Difference]: Finished difference. Result has 76 places, 77 transitions, 330 flow [2024-05-12 13:03:56,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=330, PETRI_PLACES=76, PETRI_TRANSITIONS=77} [2024-05-12 13:03:56,637 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 8 predicate places. [2024-05-12 13:03:56,637 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 77 transitions, 330 flow [2024-05-12 13:03:56,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 13:03:56,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:56,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:56,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:03:56,638 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:03:56,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:56,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1548397975, now seen corresponding path program 1 times [2024-05-12 13:03:56,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:56,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704523164] [2024-05-12 13:03:56,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:56,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:58,055 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 13:03:58,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:58,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704523164] [2024-05-12 13:03:58,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704523164] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:58,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:58,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:03:58,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674122109] [2024-05-12 13:03:58,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:58,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:03:58,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:58,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:03:58,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:03:58,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-05-12 13:03:58,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 77 transitions, 330 flow. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 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 13:03:58,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:58,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-05-12 13:03:58,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:01,317 INFO L124 PetriNetUnfolderBase]: 24241/35618 cut-off events. [2024-05-12 13:04:01,318 INFO L125 PetriNetUnfolderBase]: For 36944/36944 co-relation queries the response was YES. [2024-05-12 13:04:01,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90735 conditions, 35618 events. 24241/35618 cut-off events. For 36944/36944 co-relation queries the response was YES. Maximal size of possible extension queue 1316. Compared 248598 event pairs, 12666 based on Foata normal form. 8/34566 useless extension candidates. Maximal degree in co-relation 90713. Up to 32024 conditions per place. [2024-05-12 13:04:01,535 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 93 selfloop transitions, 20 changer transitions 1/127 dead transitions. [2024-05-12 13:04:01,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 127 transitions, 696 flow [2024-05-12 13:04:01,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:04:01,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:04:01,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 212 transitions. [2024-05-12 13:04:01,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-05-12 13:04:01,537 INFO L175 Difference]: Start difference. First operand has 76 places, 77 transitions, 330 flow. Second operand 6 states and 212 transitions. [2024-05-12 13:04:01,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 127 transitions, 696 flow [2024-05-12 13:04:01,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 127 transitions, 680 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:04:01,543 INFO L231 Difference]: Finished difference. Result has 79 places, 79 transitions, 393 flow [2024-05-12 13:04:01,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=393, PETRI_PLACES=79, PETRI_TRANSITIONS=79} [2024-05-12 13:04:01,546 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 11 predicate places. [2024-05-12 13:04:01,546 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 79 transitions, 393 flow [2024-05-12 13:04:01,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 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 13:04:01,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:01,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:01,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:04:01,547 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:04:01,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:01,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1624879784, now seen corresponding path program 1 times [2024-05-12 13:04:01,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:01,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151653868] [2024-05-12 13:04:01,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:01,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:02,692 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 13:04:02,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:02,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151653868] [2024-05-12 13:04:02,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151653868] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:02,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:02,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:04:02,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007564184] [2024-05-12 13:04:02,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:02,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:04:02,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:02,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:04:02,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:04:02,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-05-12 13:04:02,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 79 transitions, 393 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:02,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:02,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-05-12 13:04:02,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:05,761 INFO L124 PetriNetUnfolderBase]: 20273/30484 cut-off events. [2024-05-12 13:04:05,761 INFO L125 PetriNetUnfolderBase]: For 40953/40953 co-relation queries the response was YES. [2024-05-12 13:04:05,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81803 conditions, 30484 events. 20273/30484 cut-off events. For 40953/40953 co-relation queries the response was YES. Maximal size of possible extension queue 1142. Compared 214649 event pairs, 12395 based on Foata normal form. 3/29360 useless extension candidates. Maximal degree in co-relation 81780. Up to 26959 conditions per place. [2024-05-12 13:04:05,967 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 88 selfloop transitions, 11 changer transitions 0/112 dead transitions. [2024-05-12 13:04:05,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 112 transitions, 720 flow [2024-05-12 13:04:05,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:04:05,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:04:05,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2024-05-12 13:04:05,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-05-12 13:04:05,968 INFO L175 Difference]: Start difference. First operand has 79 places, 79 transitions, 393 flow. Second operand 5 states and 160 transitions. [2024-05-12 13:04:05,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 112 transitions, 720 flow [2024-05-12 13:04:05,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 112 transitions, 657 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-05-12 13:04:05,981 INFO L231 Difference]: Finished difference. Result has 80 places, 88 transitions, 454 flow [2024-05-12 13:04:05,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=454, PETRI_PLACES=80, PETRI_TRANSITIONS=88} [2024-05-12 13:04:05,982 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 12 predicate places. [2024-05-12 13:04:05,982 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 88 transitions, 454 flow [2024-05-12 13:04:05,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:05,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:05,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:05,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:04:05,983 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:04:05,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:05,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1104843789, now seen corresponding path program 1 times [2024-05-12 13:04:05,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:05,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269068747] [2024-05-12 13:04:05,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:05,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:07,281 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 13:04:07,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:07,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269068747] [2024-05-12 13:04:07,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269068747] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:07,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:07,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:04:07,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178353796] [2024-05-12 13:04:07,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:07,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:04:07,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:07,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:04:07,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:04:07,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 60 [2024-05-12 13:04:07,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 88 transitions, 454 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:07,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:07,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 60 [2024-05-12 13:04:07,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:10,943 INFO L124 PetriNetUnfolderBase]: 24285/35750 cut-off events. [2024-05-12 13:04:10,943 INFO L125 PetriNetUnfolderBase]: For 67900/67900 co-relation queries the response was YES. [2024-05-12 13:04:11,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103133 conditions, 35750 events. 24285/35750 cut-off events. For 67900/67900 co-relation queries the response was YES. Maximal size of possible extension queue 1303. Compared 247995 event pairs, 14752 based on Foata normal form. 3/34774 useless extension candidates. Maximal degree in co-relation 103107. Up to 32159 conditions per place. [2024-05-12 13:04:11,216 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 105 selfloop transitions, 16 changer transitions 0/133 dead transitions. [2024-05-12 13:04:11,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 133 transitions, 855 flow [2024-05-12 13:04:11,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:04:11,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:04:11,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-05-12 13:04:11,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-05-12 13:04:11,218 INFO L175 Difference]: Start difference. First operand has 80 places, 88 transitions, 454 flow. Second operand 6 states and 189 transitions. [2024-05-12 13:04:11,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 133 transitions, 855 flow [2024-05-12 13:04:11,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 133 transitions, 830 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-05-12 13:04:11,229 INFO L231 Difference]: Finished difference. Result has 85 places, 97 transitions, 561 flow [2024-05-12 13:04:11,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=561, PETRI_PLACES=85, PETRI_TRANSITIONS=97} [2024-05-12 13:04:11,230 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 17 predicate places. [2024-05-12 13:04:11,230 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 97 transitions, 561 flow [2024-05-12 13:04:11,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:11,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:11,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:11,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:04:11,231 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:04:11,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:11,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1858639479, now seen corresponding path program 2 times [2024-05-12 13:04:11,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:11,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409851414] [2024-05-12 13:04:11,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:11,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:12,536 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 13:04:12,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:12,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409851414] [2024-05-12 13:04:12,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409851414] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:12,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:12,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:04:12,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713088727] [2024-05-12 13:04:12,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:12,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:04:12,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:12,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:04:12,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:04:12,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 60 [2024-05-12 13:04:12,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 97 transitions, 561 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:12,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:12,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 60 [2024-05-12 13:04:12,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:16,265 INFO L124 PetriNetUnfolderBase]: 24287/35775 cut-off events. [2024-05-12 13:04:16,266 INFO L125 PetriNetUnfolderBase]: For 92983/93015 co-relation queries the response was YES. [2024-05-12 13:04:16,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110703 conditions, 35775 events. 24287/35775 cut-off events. For 92983/93015 co-relation queries the response was YES. Maximal size of possible extension queue 1307. Compared 248386 event pairs, 14224 based on Foata normal form. 27/34863 useless extension candidates. Maximal degree in co-relation 110674. Up to 32114 conditions per place. [2024-05-12 13:04:16,522 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 102 selfloop transitions, 23 changer transitions 0/137 dead transitions. [2024-05-12 13:04:16,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 137 transitions, 953 flow [2024-05-12 13:04:16,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:04:16,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:04:16,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-05-12 13:04:16,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-05-12 13:04:16,524 INFO L175 Difference]: Start difference. First operand has 85 places, 97 transitions, 561 flow. Second operand 6 states and 190 transitions. [2024-05-12 13:04:16,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 137 transitions, 953 flow [2024-05-12 13:04:16,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 137 transitions, 910 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-05-12 13:04:16,543 INFO L231 Difference]: Finished difference. Result has 88 places, 101 transitions, 623 flow [2024-05-12 13:04:16,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=623, PETRI_PLACES=88, PETRI_TRANSITIONS=101} [2024-05-12 13:04:16,544 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 20 predicate places. [2024-05-12 13:04:16,544 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 101 transitions, 623 flow [2024-05-12 13:04:16,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:16,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:16,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:16,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:04:16,545 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:04:16,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:16,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1858648407, now seen corresponding path program 1 times [2024-05-12 13:04:16,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:16,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091106713] [2024-05-12 13:04:16,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:16,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:18,064 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 13:04:18,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:18,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091106713] [2024-05-12 13:04:18,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091106713] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:18,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:18,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:04:18,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372031113] [2024-05-12 13:04:18,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:18,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:04:18,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:18,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:04:18,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:04:18,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 60 [2024-05-12 13:04:18,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 101 transitions, 623 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:18,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:18,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 60 [2024-05-12 13:04:18,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand