./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix036_power.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/mix036_power.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix036_power.opt_rmo.opt.i ./goblint.2024-05-07_14-17-48.files/protection/mix036_power.opt_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 13:21:14,058 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:21:14,107 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:21:14,115 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:21:14,116 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:21:14,132 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:21:14,136 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:21:14,136 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:21:14,137 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:21:14,140 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:21:14,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:21:14,140 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:21:14,141 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:21:14,142 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:21:14,142 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:21:14,143 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:21:14,143 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:21:14,143 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:21:14,143 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:21:14,143 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:21:14,144 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:21:14,144 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:21:14,144 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:21:14,144 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:21:14,145 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:21:14,145 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:21:14,145 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:21:14,145 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:21:14,146 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:21:14,146 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:21:14,147 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:21:14,147 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:21:14,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:21:14,147 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:21:14,147 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:21:14,148 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:21:14,148 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:21:14,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:21:14,148 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:21:14,148 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:21:14,148 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:21:14,149 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:21:14,149 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:21:14,149 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:21:14,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:21:14,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:21:14,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:21:14,356 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:21:14,356 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:21:14,357 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix036_power.opt_rmo.opt.i [2024-05-12 13:21:15,445 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:21:15,606 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:21:15,607 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix036_power.opt_rmo.opt.i [2024-05-12 13:21:15,617 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a789e482c/f5ed85b234b9460d9a575f5d8bb26942/FLAGdd5999e73 [2024-05-12 13:21:15,627 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a789e482c/f5ed85b234b9460d9a575f5d8bb26942 [2024-05-12 13:21:15,628 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:21:15,629 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:21:15,629 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix036_power.opt_rmo.opt.yml/witness.yml [2024-05-12 13:21:15,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:21:15,774 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:21:15,775 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:21:15,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:21:15,778 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:21:15,779 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:21:15" (1/2) ... [2024-05-12 13:21:15,780 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ed441f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:21:15, skipping insertion in model container [2024-05-12 13:21:15,780 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:21:15" (1/2) ... [2024-05-12 13:21:15,781 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3773edc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:21:15, skipping insertion in model container [2024-05-12 13:21:15,781 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:21:15" (2/2) ... [2024-05-12 13:21:15,781 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ed441f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:21:15, skipping insertion in model container [2024-05-12 13:21:15,781 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:21:15" (2/2) ... [2024-05-12 13:21:15,782 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:21:15,948 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:21:15,949 INFO L97 edCorrectnessWitness]: Location invariant before [L868-L868] ((((((((((((((((((((((((! multithreaded || y$r_buff0_thd4 == (_Bool)0) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0) [2024-05-12 13:21:15,949 INFO L97 edCorrectnessWitness]: Location invariant before [L866-L866] ((((((((((((((((((((((((! multithreaded || y$r_buff0_thd4 == (_Bool)0) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0) [2024-05-12 13:21:15,949 INFO L97 edCorrectnessWitness]: Location invariant before [L871-L871] ((((((((((((((((((((((((! multithreaded || y$r_buff0_thd4 == (_Bool)0) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0) [2024-05-12 13:21:15,949 INFO L97 edCorrectnessWitness]: Location invariant before [L870-L870] ((((((((((((((((((((((((! multithreaded || y$r_buff0_thd4 == (_Bool)0) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0) [2024-05-12 13:21:15,950 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:21:15,950 INFO L106 edCorrectnessWitness]: ghost_update [L864-L864] multithreaded = 1; [2024-05-12 13:21:15,994 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:21:16,140 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/mix036_power.opt_rmo.opt.i[958,971] [2024-05-12 13:21:16,286 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:21:16,307 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:21:16,333 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/mix036_power.opt_rmo.opt.i[958,971] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:21:16,433 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:21:16,464 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:21:16,464 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:21:16 WrapperNode [2024-05-12 13:21:16,464 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:21:16,465 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:21:16,465 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:21:16,465 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:21:16,473 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 01:21:16" (1/1) ... [2024-05-12 13:21:16,497 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 01:21:16" (1/1) ... [2024-05-12 13:21:16,538 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 153 [2024-05-12 13:21:16,539 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:21:16,539 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:21:16,539 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:21:16,539 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:21:16,555 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 01:21:16" (1/1) ... [2024-05-12 13:21:16,556 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 01:21:16" (1/1) ... [2024-05-12 13:21:16,568 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 01:21:16" (1/1) ... [2024-05-12 13:21:16,590 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 13:21:16,590 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 01:21:16" (1/1) ... [2024-05-12 13:21:16,590 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 01:21:16" (1/1) ... [2024-05-12 13:21:16,600 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 01:21:16" (1/1) ... [2024-05-12 13:21:16,608 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 01:21:16" (1/1) ... [2024-05-12 13:21:16,612 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 01:21:16" (1/1) ... [2024-05-12 13:21:16,616 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 01:21:16" (1/1) ... [2024-05-12 13:21:16,620 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:21:16,622 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:21:16,623 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:21:16,624 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:21:16,624 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 01:21:16" (1/1) ... [2024-05-12 13:21:16,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:21:16,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:21:16,646 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 13:21:16,673 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 13:21:16,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:21:16,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:21:16,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:21:16,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:21:16,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 13:21:16,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:21:16,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:21:16,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:21:16,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:21:16,689 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:21:16,689 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:21:16,689 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:21:16,689 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:21:16,690 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:21:16,690 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:21:16,691 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-05-12 13:21:16,691 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-05-12 13:21:16,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:21:16,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:21:16,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:21:16,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:21:16,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 13:21:16,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:21:16,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:21:16,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:21:16,693 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 13:21:16,829 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:21:16,831 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:21:17,183 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:21:17,183 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:21:17,287 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:21:17,287 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:21:17,288 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:21:17 BoogieIcfgContainer [2024-05-12 13:21:17,288 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:21:17,289 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:21:17,289 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:21:17,292 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:21:17,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:21:15" (1/4) ... [2024-05-12 13:21:17,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4114b6b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:21:17, skipping insertion in model container [2024-05-12 13:21:17,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:21:15" (2/4) ... [2024-05-12 13:21:17,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4114b6b6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:21:17, skipping insertion in model container [2024-05-12 13:21:17,293 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 01:21:16" (3/4) ... [2024-05-12 13:21:17,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4114b6b6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:21:17, skipping insertion in model container [2024-05-12 13:21:17,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:21:17" (4/4) ... [2024-05-12 13:21:17,294 INFO L112 eAbstractionObserver]: Analyzing ICFG mix036_power.opt_rmo.opt.i [2024-05-12 13:21:17,306 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:21:17,306 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-05-12 13:21:17,306 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:21:17,345 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:21:17,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 60 transitions, 136 flow [2024-05-12 13:21:17,391 INFO L124 PetriNetUnfolderBase]: 1/56 cut-off events. [2024-05-12 13:21:17,391 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:21:17,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 56 events. 1/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 103 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2024-05-12 13:21:17,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 60 transitions, 136 flow [2024-05-12 13:21:17,396 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 56 transitions, 124 flow [2024-05-12 13:21:17,402 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:21:17,406 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;@7c792305, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:21:17,407 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-05-12 13:21:17,410 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:21:17,410 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-05-12 13:21:17,410 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:21:17,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:21:17,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:21:17,411 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:21:17,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:21:17,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1076100359, now seen corresponding path program 1 times [2024-05-12 13:21:17,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:21:17,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054736831] [2024-05-12 13:21:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:21:17,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:21:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:21:18,661 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 13:21:18,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:21:18,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054736831] [2024-05-12 13:21:18,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054736831] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:21:18,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:21:18,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:21:18,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772356425] [2024-05-12 13:21:18,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:21:18,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:21:18,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:21:18,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:21:18,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:21:18,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 60 [2024-05-12 13:21:18,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 13:21:18,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:21:18,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 60 [2024-05-12 13:21:18,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:21:21,093 INFO L124 PetriNetUnfolderBase]: 16761/24933 cut-off events. [2024-05-12 13:21:21,094 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-05-12 13:21:21,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47605 conditions, 24933 events. 16761/24933 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 174527 event pairs, 13879 based on Foata normal form. 601/23605 useless extension candidates. Maximal degree in co-relation 47589. Up to 22359 conditions per place. [2024-05-12 13:21:21,241 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 52 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2024-05-12 13:21:21,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 74 transitions, 285 flow [2024-05-12 13:21:21,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:21:21,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:21:21,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-05-12 13:21:21,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6888888888888889 [2024-05-12 13:21:21,252 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 124 flow. Second operand 3 states and 124 transitions. [2024-05-12 13:21:21,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 74 transitions, 285 flow [2024-05-12 13:21:21,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 74 transitions, 278 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 13:21:21,257 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 164 flow [2024-05-12 13:21:21,258 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 13:21:21,261 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2024-05-12 13:21:21,261 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 164 flow [2024-05-12 13:21:21,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 13:21:21,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:21:21,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:21:21,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:21:21,262 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:21:21,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:21:21,262 INFO L85 PathProgramCache]: Analyzing trace with hash 954725528, now seen corresponding path program 1 times [2024-05-12 13:21:21,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:21:21,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937865313] [2024-05-12 13:21:21,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:21:21,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:21:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:21:22,424 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 13:21:22,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:21:22,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937865313] [2024-05-12 13:21:22,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937865313] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:21:22,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:21:22,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:21:22,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725550254] [2024-05-12 13:21:22,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:21:22,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:21:22,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:21:22,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:21:22,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:21:22,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-05-12 13:21:22,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 13:21:22,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:21:22,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-05-12 13:21:22,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:21:24,967 INFO L124 PetriNetUnfolderBase]: 19471/28691 cut-off events. [2024-05-12 13:21:24,968 INFO L125 PetriNetUnfolderBase]: For 4756/4756 co-relation queries the response was YES. [2024-05-12 13:21:25,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61777 conditions, 28691 events. 19471/28691 cut-off events. For 4756/4756 co-relation queries the response was YES. Maximal size of possible extension queue 1151. Compared 200506 event pairs, 14197 based on Foata normal form. 4/26746 useless extension candidates. Maximal degree in co-relation 61762. Up to 25876 conditions per place. [2024-05-12 13:21:25,146 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 67 selfloop transitions, 11 changer transitions 0/93 dead transitions. [2024-05-12 13:21:25,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 93 transitions, 406 flow [2024-05-12 13:21:25,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:21:25,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:21:25,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2024-05-12 13:21:25,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6583333333333333 [2024-05-12 13:21:25,150 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 164 flow. Second operand 4 states and 158 transitions. [2024-05-12 13:21:25,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 93 transitions, 406 flow [2024-05-12 13:21:25,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 93 transitions, 400 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:21:25,153 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 222 flow [2024-05-12 13:21:25,153 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 13:21:25,154 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 2 predicate places. [2024-05-12 13:21:25,154 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 222 flow [2024-05-12 13:21:25,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 13:21:25,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:21:25,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:21:25,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:21:25,155 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:21:25,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:21:25,156 INFO L85 PathProgramCache]: Analyzing trace with hash 956451715, now seen corresponding path program 1 times [2024-05-12 13:21:25,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:21:25,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279998977] [2024-05-12 13:21:25,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:21:25,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:21:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:21:26,483 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 13:21:26,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:21:26,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279998977] [2024-05-12 13:21:26,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279998977] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:21:26,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:21:26,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:21:26,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622511041] [2024-05-12 13:21:26,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:21:26,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:21:26,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:21:26,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:21:26,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:21:26,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 60 [2024-05-12 13:21:26,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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 13:21:26,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:21:26,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 60 [2024-05-12 13:21:26,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:21:29,361 INFO L124 PetriNetUnfolderBase]: 24716/33802 cut-off events. [2024-05-12 13:21:29,361 INFO L125 PetriNetUnfolderBase]: For 14179/14179 co-relation queries the response was YES. [2024-05-12 13:21:29,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83222 conditions, 33802 events. 24716/33802 cut-off events. For 14179/14179 co-relation queries the response was YES. Maximal size of possible extension queue 1190. Compared 209652 event pairs, 10752 based on Foata normal form. 8/32163 useless extension candidates. Maximal degree in co-relation 83205. Up to 32636 conditions per place. [2024-05-12 13:21:29,554 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 93 selfloop transitions, 20 changer transitions 0/127 dead transitions. [2024-05-12 13:21:29,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 127 transitions, 626 flow [2024-05-12 13:21:29,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:21:29,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:21:29,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 225 transitions. [2024-05-12 13:21:29,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-05-12 13:21:29,556 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 222 flow. Second operand 6 states and 225 transitions. [2024-05-12 13:21:29,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 127 transitions, 626 flow [2024-05-12 13:21:29,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 127 transitions, 590 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-05-12 13:21:29,560 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 301 flow [2024-05-12 13:21:29,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=301, PETRI_PLACES=74, PETRI_TRANSITIONS=73} [2024-05-12 13:21:29,561 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 6 predicate places. [2024-05-12 13:21:29,561 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 301 flow [2024-05-12 13:21:29,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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 13:21:29,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:21:29,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:21:29,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:21:29,562 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:21:29,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:21:29,562 INFO L85 PathProgramCache]: Analyzing trace with hash -161393015, now seen corresponding path program 1 times [2024-05-12 13:21:29,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:21:29,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669617123] [2024-05-12 13:21:29,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:21:29,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:21:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:21:30,399 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 13:21:30,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:21:30,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669617123] [2024-05-12 13:21:30,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669617123] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:21:30,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:21:30,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:21:30,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910089412] [2024-05-12 13:21:30,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:21:30,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:21:30,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:21:30,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:21:30,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:21:30,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 60 [2024-05-12 13:21:30,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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 13:21:30,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:21:30,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 60 [2024-05-12 13:21:30,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:21:33,612 INFO L124 PetriNetUnfolderBase]: 24179/34198 cut-off events. [2024-05-12 13:21:33,612 INFO L125 PetriNetUnfolderBase]: For 25905/25905 co-relation queries the response was YES. [2024-05-12 13:21:33,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90595 conditions, 34198 events. 24179/34198 cut-off events. For 25905/25905 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 222181 event pairs, 10988 based on Foata normal form. 6/32589 useless extension candidates. Maximal degree in co-relation 90576. Up to 32008 conditions per place. [2024-05-12 13:21:33,832 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 80 selfloop transitions, 12 changer transitions 0/106 dead transitions. [2024-05-12 13:21:33,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 106 transitions, 581 flow [2024-05-12 13:21:33,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:21:33,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:21:33,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 171 transitions. [2024-05-12 13:21:33,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.57 [2024-05-12 13:21:33,835 INFO L175 Difference]: Start difference. First operand has 74 places, 73 transitions, 301 flow. Second operand 5 states and 171 transitions. [2024-05-12 13:21:33,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 106 transitions, 581 flow [2024-05-12 13:21:33,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 106 transitions, 532 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-05-12 13:21:33,844 INFO L231 Difference]: Finished difference. Result has 76 places, 78 transitions, 328 flow [2024-05-12 13:21:33,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=76, PETRI_TRANSITIONS=78} [2024-05-12 13:21:33,845 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 8 predicate places. [2024-05-12 13:21:33,845 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 78 transitions, 328 flow [2024-05-12 13:21:33,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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 13:21:33,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:21:33,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:21:33,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:21:33,846 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:21:33,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:21:33,846 INFO L85 PathProgramCache]: Analyzing trace with hash -709949276, now seen corresponding path program 1 times [2024-05-12 13:21:33,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:21:33,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157910898] [2024-05-12 13:21:33,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:21:33,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:21:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:21:33,915 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 13:21:33,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:21:33,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157910898] [2024-05-12 13:21:33,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157910898] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:21:33,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:21:33,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:21:33,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485892526] [2024-05-12 13:21:33,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:21:33,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:21:33,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:21:33,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:21:33,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:21:33,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 60 [2024-05-12 13:21:33,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 78 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 13:21:33,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:21:33,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 60 [2024-05-12 13:21:33,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:21:34,745 INFO L124 PetriNetUnfolderBase]: 5611/10502 cut-off events. [2024-05-12 13:21:34,745 INFO L125 PetriNetUnfolderBase]: For 8100/9075 co-relation queries the response was YES. [2024-05-12 13:21:34,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23986 conditions, 10502 events. 5611/10502 cut-off events. For 8100/9075 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 92344 event pairs, 2078 based on Foata normal form. 2/9474 useless extension candidates. Maximal degree in co-relation 23965. Up to 6429 conditions per place. [2024-05-12 13:21:34,818 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 37 selfloop transitions, 7 changer transitions 0/85 dead transitions. [2024-05-12 13:21:34,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 85 transitions, 404 flow [2024-05-12 13:21:34,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:21:34,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:21:34,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2024-05-12 13:21:34,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7555555555555555 [2024-05-12 13:21:34,819 INFO L175 Difference]: Start difference. First operand has 76 places, 78 transitions, 328 flow. Second operand 3 states and 136 transitions. [2024-05-12 13:21:34,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 85 transitions, 404 flow [2024-05-12 13:21:34,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 85 transitions, 375 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-05-12 13:21:34,822 INFO L231 Difference]: Finished difference. Result has 74 places, 72 transitions, 273 flow [2024-05-12 13:21:34,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=74, PETRI_TRANSITIONS=72} [2024-05-12 13:21:34,823 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 6 predicate places. [2024-05-12 13:21:34,823 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 72 transitions, 273 flow [2024-05-12 13:21:34,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 13:21:34,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:21:34,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:21:34,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:21:34,824 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:21:34,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:21:34,824 INFO L85 PathProgramCache]: Analyzing trace with hash -480007478, now seen corresponding path program 1 times [2024-05-12 13:21:34,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:21:34,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957240344] [2024-05-12 13:21:34,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:21:34,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:21:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:21:35,810 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 13:21:35,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:21:35,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957240344] [2024-05-12 13:21:35,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957240344] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:21:35,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:21:35,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:21:35,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086013831] [2024-05-12 13:21:35,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:21:35,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:21:35,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:21:35,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:21:35,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:21:35,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-05-12 13:21:35,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 72 transitions, 273 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 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 13:21:35,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:21:35,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-05-12 13:21:35,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:21:38,871 INFO L124 PetriNetUnfolderBase]: 23322/32019 cut-off events. [2024-05-12 13:21:38,871 INFO L125 PetriNetUnfolderBase]: For 47808/47808 co-relation queries the response was YES. [2024-05-12 13:21:38,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90569 conditions, 32019 events. 23322/32019 cut-off events. For 47808/47808 co-relation queries the response was YES. Maximal size of possible extension queue 1041. Compared 194062 event pairs, 10052 based on Foata normal form. 6/31739 useless extension candidates. Maximal degree in co-relation 90549. Up to 30724 conditions per place. [2024-05-12 13:21:39,119 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 90 selfloop transitions, 21 changer transitions 4/128 dead transitions. [2024-05-12 13:21:39,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 128 transitions, 699 flow [2024-05-12 13:21:39,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:21:39,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:21:39,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2024-05-12 13:21:39,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-05-12 13:21:39,123 INFO L175 Difference]: Start difference. First operand has 74 places, 72 transitions, 273 flow. Second operand 6 states and 207 transitions. [2024-05-12 13:21:39,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 128 transitions, 699 flow [2024-05-12 13:21:39,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 128 transitions, 681 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:21:39,147 INFO L231 Difference]: Finished difference. Result has 78 places, 79 transitions, 374 flow [2024-05-12 13:21:39,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=374, PETRI_PLACES=78, PETRI_TRANSITIONS=79} [2024-05-12 13:21:39,151 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 10 predicate places. [2024-05-12 13:21:39,151 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 79 transitions, 374 flow [2024-05-12 13:21:39,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 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 13:21:39,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:21:39,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:21:39,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:21:39,152 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:21:39,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:21:39,153 INFO L85 PathProgramCache]: Analyzing trace with hash 893862922, now seen corresponding path program 2 times [2024-05-12 13:21:39,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:21:39,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769749364] [2024-05-12 13:21:39,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:21:39,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:21:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:21:40,238 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 13:21:40,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:21:40,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769749364] [2024-05-12 13:21:40,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769749364] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:21:40,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:21:40,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:21:40,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230442503] [2024-05-12 13:21:40,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:21:40,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:21:40,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:21:40,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:21:40,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:21:40,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-05-12 13:21:40,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 79 transitions, 374 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 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 13:21:40,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:21:40,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-05-12 13:21:40,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:21:43,379 INFO L124 PetriNetUnfolderBase]: 20446/28131 cut-off events. [2024-05-12 13:21:43,379 INFO L125 PetriNetUnfolderBase]: For 54169/54177 co-relation queries the response was YES. [2024-05-12 13:21:43,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84777 conditions, 28131 events. 20446/28131 cut-off events. For 54169/54177 co-relation queries the response was YES. Maximal size of possible extension queue 971. Compared 168805 event pairs, 8944 based on Foata normal form. 12/27886 useless extension candidates. Maximal degree in co-relation 84755. Up to 26990 conditions per place. [2024-05-12 13:21:43,561 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 83 selfloop transitions, 21 changer transitions 0/117 dead transitions. [2024-05-12 13:21:43,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 117 transitions, 672 flow [2024-05-12 13:21:43,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:21:43,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:21:43,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2024-05-12 13:21:43,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-05-12 13:21:43,564 INFO L175 Difference]: Start difference. First operand has 78 places, 79 transitions, 374 flow. Second operand 6 states and 196 transitions. [2024-05-12 13:21:43,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 117 transitions, 672 flow [2024-05-12 13:21:43,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 117 transitions, 626 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-05-12 13:21:43,601 INFO L231 Difference]: Finished difference. Result has 81 places, 79 transitions, 381 flow [2024-05-12 13:21:43,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=381, PETRI_PLACES=81, PETRI_TRANSITIONS=79} [2024-05-12 13:21:43,602 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 13 predicate places. [2024-05-12 13:21:43,602 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 381 flow [2024-05-12 13:21:43,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 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 13:21:43,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:21:43,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:21:43,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:21:43,603 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:21:43,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:21:43,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1956651416, now seen corresponding path program 1 times [2024-05-12 13:21:43,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:21:43,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135470938] [2024-05-12 13:21:43,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:21:43,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:21:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:21:44,662 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 13:21:44,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:21:44,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135470938] [2024-05-12 13:21:44,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135470938] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:21:44,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:21:44,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:21:44,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628366651] [2024-05-12 13:21:44,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:21:44,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:21:44,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:21:44,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:21:44,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:21:44,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-05-12 13:21:44,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 381 flow. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 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 13:21:44,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:21:44,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-05-12 13:21:44,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:21:47,545 INFO L124 PetriNetUnfolderBase]: 20639/28432 cut-off events. [2024-05-12 13:21:47,545 INFO L125 PetriNetUnfolderBase]: For 58126/58130 co-relation queries the response was YES. [2024-05-12 13:21:47,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85599 conditions, 28432 events. 20639/28432 cut-off events. For 58126/58130 co-relation queries the response was YES. Maximal size of possible extension queue 971. Compared 170826 event pairs, 9450 based on Foata normal form. 10/28186 useless extension candidates. Maximal degree in co-relation 85575. Up to 27272 conditions per place. [2024-05-12 13:21:47,679 INFO L140 encePairwiseOnDemand]: 44/60 looper letters, 113 selfloop transitions, 33 changer transitions 0/159 dead transitions. [2024-05-12 13:21:47,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 159 transitions, 936 flow [2024-05-12 13:21:47,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:21:47,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:21:47,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 264 transitions. [2024-05-12 13:21:47,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-05-12 13:21:47,681 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 381 flow. Second operand 8 states and 264 transitions. [2024-05-12 13:21:47,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 159 transitions, 936 flow [2024-05-12 13:21:47,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 159 transitions, 862 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-05-12 13:21:47,700 INFO L231 Difference]: Finished difference. Result has 85 places, 99 transitions, 541 flow [2024-05-12 13:21:47,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=541, PETRI_PLACES=85, PETRI_TRANSITIONS=99} [2024-05-12 13:21:47,701 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 17 predicate places. [2024-05-12 13:21:47,701 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 99 transitions, 541 flow [2024-05-12 13:21:47,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 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 13:21:47,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:21:47,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:21:47,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:21:47,702 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:21:47,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:21:47,702 INFO L85 PathProgramCache]: Analyzing trace with hash 2128932368, now seen corresponding path program 2 times [2024-05-12 13:21:47,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:21:47,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277008156] [2024-05-12 13:21:47,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:21:47,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:21:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:21:48,670 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 13:21:48,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:21:48,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277008156] [2024-05-12 13:21:48,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277008156] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:21:48,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:21:48,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:21:48,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570616489] [2024-05-12 13:21:48,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:21:48,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:21:48,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:21:48,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:21:48,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:21:48,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-05-12 13:21:48,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 99 transitions, 541 flow. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 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 13:21:48,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:21:48,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-05-12 13:21:48,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:21:51,500 INFO L124 PetriNetUnfolderBase]: 20715/28537 cut-off events. [2024-05-12 13:21:51,500 INFO L125 PetriNetUnfolderBase]: For 80667/80675 co-relation queries the response was YES. [2024-05-12 13:21:51,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92893 conditions, 28537 events. 20715/28537 cut-off events. For 80667/80675 co-relation queries the response was YES. Maximal size of possible extension queue 970. Compared 171598 event pairs, 9206 based on Foata normal form. 14/28286 useless extension candidates. Maximal degree in co-relation 92867. Up to 27314 conditions per place. [2024-05-12 13:21:51,750 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 112 selfloop transitions, 34 changer transitions 0/159 dead transitions. [2024-05-12 13:21:51,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 159 transitions, 1051 flow [2024-05-12 13:21:51,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:21:51,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:21:51,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 231 transitions. [2024-05-12 13:21:51,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-05-12 13:21:51,751 INFO L175 Difference]: Start difference. First operand has 85 places, 99 transitions, 541 flow. Second operand 7 states and 231 transitions. [2024-05-12 13:21:51,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 159 transitions, 1051 flow [2024-05-12 13:21:51,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 159 transitions, 993 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-05-12 13:21:51,798 INFO L231 Difference]: Finished difference. Result has 89 places, 103 transitions, 618 flow [2024-05-12 13:21:51,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=618, PETRI_PLACES=89, PETRI_TRANSITIONS=103} [2024-05-12 13:21:51,799 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 21 predicate places. [2024-05-12 13:21:51,799 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 103 transitions, 618 flow [2024-05-12 13:21:51,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 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 13:21:51,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:21:51,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:21:51,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 13:21:51,800 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:21:51,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:21:51,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2128937018, now seen corresponding path program 3 times [2024-05-12 13:21:51,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:21:51,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386010326] [2024-05-12 13:21:51,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:21:51,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:21:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:21:52,833 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 13:21:52,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:21:52,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386010326] [2024-05-12 13:21:52,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386010326] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:21:52,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:21:52,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:21:52,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311343330] [2024-05-12 13:21:52,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:21:52,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:21:52,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:21:52,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:21:52,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:21:52,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-05-12 13:21:52,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 103 transitions, 618 flow. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 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 13:21:52,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:21:52,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-05-12 13:21:52,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:21:55,805 INFO L124 PetriNetUnfolderBase]: 20791/28662 cut-off events. [2024-05-12 13:21:55,806 INFO L125 PetriNetUnfolderBase]: For 106221/106223 co-relation queries the response was YES. [2024-05-12 13:21:55,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99199 conditions, 28662 events. 20791/28662 cut-off events. For 106221/106223 co-relation queries the response was YES. Maximal size of possible extension queue 970. Compared 171959 event pairs, 8329 based on Foata normal form. 6/28403 useless extension candidates. Maximal degree in co-relation 99172. Up to 27127 conditions per place. [2024-05-12 13:21:56,026 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 104 selfloop transitions, 50 changer transitions 0/167 dead transitions. [2024-05-12 13:21:56,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 167 transitions, 1232 flow [2024-05-12 13:21:56,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:21:56,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:21:56,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 238 transitions. [2024-05-12 13:21:56,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-05-12 13:21:56,028 INFO L175 Difference]: Start difference. First operand has 89 places, 103 transitions, 618 flow. Second operand 7 states and 238 transitions. [2024-05-12 13:21:56,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 167 transitions, 1232 flow [2024-05-12 13:21:56,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 167 transitions, 1113 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-05-12 13:21:56,086 INFO L231 Difference]: Finished difference. Result has 91 places, 111 transitions, 724 flow [2024-05-12 13:21:56,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=724, PETRI_PLACES=91, PETRI_TRANSITIONS=111} [2024-05-12 13:21:56,086 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 23 predicate places. [2024-05-12 13:21:56,087 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 111 transitions, 724 flow [2024-05-12 13:21:56,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 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 13:21:56,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:21:56,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:21:56,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 13:21:56,087 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:21:56,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:21:56,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1939948888, now seen corresponding path program 4 times [2024-05-12 13:21:56,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:21:56,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962344227] [2024-05-12 13:21:56,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:21:56,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:21:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:21:57,102 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 13:21:57,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:21:57,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962344227] [2024-05-12 13:21:57,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962344227] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:21:57,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:21:57,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:21:57,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387153979] [2024-05-12 13:21:57,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:21:57,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:21:57,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:21:57,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:21:57,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:21:57,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-05-12 13:21:57,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 111 transitions, 724 flow. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 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 13:21:57,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:21:57,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-05-12 13:21:57,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:22:00,270 INFO L124 PetriNetUnfolderBase]: 20773/28640 cut-off events. [2024-05-12 13:22:00,270 INFO L125 PetriNetUnfolderBase]: For 106969/106973 co-relation queries the response was YES. [2024-05-12 13:22:00,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99072 conditions, 28640 events. 20773/28640 cut-off events. For 106969/106973 co-relation queries the response was YES. Maximal size of possible extension queue 970. Compared 171783 event pairs, 8339 based on Foata normal form. 6/28375 useless extension candidates. Maximal degree in co-relation 99044. Up to 27112 conditions per place. [2024-05-12 13:22:00,536 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 98 selfloop transitions, 50 changer transitions 0/161 dead transitions. [2024-05-12 13:22:00,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 161 transitions, 1164 flow [2024-05-12 13:22:00,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:22:00,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:22:00,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 231 transitions. [2024-05-12 13:22:00,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-05-12 13:22:00,539 INFO L175 Difference]: Start difference. First operand has 91 places, 111 transitions, 724 flow. Second operand 7 states and 231 transitions. [2024-05-12 13:22:00,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 161 transitions, 1164 flow [2024-05-12 13:22:00,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 161 transitions, 1081 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-05-12 13:22:00,639 INFO L231 Difference]: Finished difference. Result has 95 places, 111 transitions, 752 flow [2024-05-12 13:22:00,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=752, PETRI_PLACES=95, PETRI_TRANSITIONS=111} [2024-05-12 13:22:00,640 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 27 predicate places. [2024-05-12 13:22:00,640 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 111 transitions, 752 flow [2024-05-12 13:22:00,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 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 13:22:00,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:22:00,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:22:00,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 13:22:00,641 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:22:00,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:22:00,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1988652494, now seen corresponding path program 1 times [2024-05-12 13:22:00,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:22:00,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072403457] [2024-05-12 13:22:00,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:22:00,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:22:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:22:02,085 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 13:22:02,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:22:02,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072403457] [2024-05-12 13:22:02,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072403457] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:22:02,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:22:02,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:22:02,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261508998] [2024-05-12 13:22:02,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:22:02,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:22:02,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:22:02,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:22:02,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:22:02,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 60 [2024-05-12 13:22:02,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 111 transitions, 752 flow. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:22:02,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:22:02,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 60 [2024-05-12 13:22:02,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:22:05,655 INFO L124 PetriNetUnfolderBase]: 17908/25571 cut-off events. [2024-05-12 13:22:05,656 INFO L125 PetriNetUnfolderBase]: For 100656/100658 co-relation queries the response was YES. [2024-05-12 13:22:05,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88608 conditions, 25571 events. 17908/25571 cut-off events. For 100656/100658 co-relation queries the response was YES. Maximal size of possible extension queue 889. Compared 162140 event pairs, 7249 based on Foata normal form. 6/25292 useless extension candidates. Maximal degree in co-relation 88578. Up to 23763 conditions per place. [2024-05-12 13:22:05,813 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 135 selfloop transitions, 17 changer transitions 0/166 dead transitions. [2024-05-12 13:22:05,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 166 transitions, 1261 flow [2024-05-12 13:22:05,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:22:05,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:22:05,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 230 transitions. [2024-05-12 13:22:05,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-05-12 13:22:05,815 INFO L175 Difference]: Start difference. First operand has 95 places, 111 transitions, 752 flow. Second operand 7 states and 230 transitions. [2024-05-12 13:22:05,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 166 transitions, 1261 flow [2024-05-12 13:22:05,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 166 transitions, 1120 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-05-12 13:22:05,862 INFO L231 Difference]: Finished difference. Result has 97 places, 118 transitions, 733 flow [2024-05-12 13:22:05,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=733, PETRI_PLACES=97, PETRI_TRANSITIONS=118} [2024-05-12 13:22:05,863 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 29 predicate places. [2024-05-12 13:22:05,863 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 118 transitions, 733 flow [2024-05-12 13:22:05,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:22:05,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:22:05,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:22:05,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 13:22:05,864 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:22:05,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:22:05,865 INFO L85 PathProgramCache]: Analyzing trace with hash 637277077, now seen corresponding path program 1 times [2024-05-12 13:22:05,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:22:05,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373798131] [2024-05-12 13:22:05,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:22:05,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:22:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:22:07,124 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 13:22:07,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:22:07,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373798131] [2024-05-12 13:22:07,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373798131] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:22:07,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:22:07,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:22:07,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537164679] [2024-05-12 13:22:07,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:22:07,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:22:07,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:22:07,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:22:07,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:22:07,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-05-12 13:22:07,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 118 transitions, 733 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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 13:22:07,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:22:07,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-05-12 13:22:07,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:22:09,869 INFO L124 PetriNetUnfolderBase]: 16862/26347 cut-off events. [2024-05-12 13:22:09,870 INFO L125 PetriNetUnfolderBase]: For 122817/122846 co-relation queries the response was YES. [2024-05-12 13:22:09,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91423 conditions, 26347 events. 16862/26347 cut-off events. For 122817/122846 co-relation queries the response was YES. Maximal size of possible extension queue 1019. Compared 193846 event pairs, 8886 based on Foata normal form. 29/25701 useless extension candidates. Maximal degree in co-relation 91391. Up to 22551 conditions per place. [2024-05-12 13:22:10,056 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 117 selfloop transitions, 11 changer transitions 0/147 dead transitions. [2024-05-12 13:22:10,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 147 transitions, 1122 flow [2024-05-12 13:22:10,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:22:10,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:22:10,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 163 transitions. [2024-05-12 13:22:10,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5433333333333333 [2024-05-12 13:22:10,058 INFO L175 Difference]: Start difference. First operand has 97 places, 118 transitions, 733 flow. Second operand 5 states and 163 transitions. [2024-05-12 13:22:10,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 147 transitions, 1122 flow [2024-05-12 13:22:10,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 147 transitions, 1054 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-05-12 13:22:10,119 INFO L231 Difference]: Finished difference. Result has 99 places, 127 transitions, 793 flow [2024-05-12 13:22:10,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=793, PETRI_PLACES=99, PETRI_TRANSITIONS=127} [2024-05-12 13:22:10,119 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 31 predicate places. [2024-05-12 13:22:10,120 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 127 transitions, 793 flow [2024-05-12 13:22:10,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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 13:22:10,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:22:10,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:22:10,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 13:22:10,120 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:22:10,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:22:10,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1385960919, now seen corresponding path program 1 times [2024-05-12 13:22:10,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:22:10,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589106625] [2024-05-12 13:22:10,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:22:10,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:22:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:22:11,454 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 13:22:11,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:22:11,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589106625] [2024-05-12 13:22:11,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589106625] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:22:11,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:22:11,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:22:11,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749694246] [2024-05-12 13:22:11,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:22:11,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:22:11,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:22:11,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:22:11,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:22:11,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-05-12 13:22:11,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 127 transitions, 793 flow. Second operand has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 9 states have internal predecessors, (166), 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 13:22:11,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:22:11,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-05-12 13:22:11,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:22:15,403 INFO L124 PetriNetUnfolderBase]: 21355/31737 cut-off events. [2024-05-12 13:22:15,404 INFO L125 PetriNetUnfolderBase]: For 178993/179001 co-relation queries the response was YES. [2024-05-12 13:22:15,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118745 conditions, 31737 events. 21355/31737 cut-off events. For 178993/179001 co-relation queries the response was YES. Maximal size of possible extension queue 1097. Compared 217705 event pairs, 8285 based on Foata normal form. 32/30990 useless extension candidates. Maximal degree in co-relation 118711. Up to 27489 conditions per place. [2024-05-12 13:22:15,637 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 162 selfloop transitions, 45 changer transitions 0/220 dead transitions. [2024-05-12 13:22:15,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 220 transitions, 1647 flow [2024-05-12 13:22:15,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:22:15,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:22:15,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 304 transitions. [2024-05-12 13:22:15,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.562962962962963 [2024-05-12 13:22:15,639 INFO L175 Difference]: Start difference. First operand has 99 places, 127 transitions, 793 flow. Second operand 9 states and 304 transitions. [2024-05-12 13:22:15,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 220 transitions, 1647 flow [2024-05-12 13:22:15,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 220 transitions, 1608 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-05-12 13:22:15,753 INFO L231 Difference]: Finished difference. Result has 106 places, 131 transitions, 933 flow [2024-05-12 13:22:15,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=933, PETRI_PLACES=106, PETRI_TRANSITIONS=131} [2024-05-12 13:22:15,753 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 38 predicate places. [2024-05-12 13:22:15,754 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 131 transitions, 933 flow [2024-05-12 13:22:15,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 9 states have internal predecessors, (166), 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 13:22:15,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:22:15,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:22:15,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 13:22:15,754 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:22:15,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:22:15,755 INFO L85 PathProgramCache]: Analyzing trace with hash 337852549, now seen corresponding path program 2 times [2024-05-12 13:22:15,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:22:15,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251952790] [2024-05-12 13:22:15,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:22:15,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:22:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:22:17,049 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 13:22:17,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:22:17,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251952790] [2024-05-12 13:22:17,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251952790] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:22:17,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:22:17,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:22:17,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119476530] [2024-05-12 13:22:17,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:22:17,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:22:17,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:22:17,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:22:17,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:22:17,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-05-12 13:22:17,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 131 transitions, 933 flow. Second operand has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 9 states have internal predecessors, (166), 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 13:22:17,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:22:17,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-05-12 13:22:17,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand