./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix043.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/mix043.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/mix043.opt.i ./goblint.2024-05-07_14-17-48.files/protection/mix043.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 13:23:54,168 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:23:54,229 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:23:54,240 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:23:54,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:23:54,275 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:23:54,275 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:23:54,275 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:23:54,276 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:23:54,279 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:23:54,279 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:23:54,279 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:23:54,280 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:23:54,281 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:23:54,281 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:23:54,281 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:23:54,282 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:23:54,282 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:23:54,282 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:23:54,282 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:23:54,282 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:23:54,283 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:23:54,283 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:23:54,283 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:23:54,283 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:23:54,284 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:23:54,284 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:23:54,284 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:23:54,284 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:23:54,285 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:23:54,285 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:23:54,285 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:23:54,286 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:23:54,286 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:23:54,286 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:23:54,286 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:23:54,286 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:23:54,286 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:23:54,287 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:23:54,287 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:23:54,287 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:23:54,287 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:23:54,287 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:23:54,287 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:23:54,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:23:54,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:23:54,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:23:54,497 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:23:54,497 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:23:54,498 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix043.opt.yml/witness.yml [2024-05-12 13:23:54,686 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:23:54,687 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:23:54,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix043.opt.i [2024-05-12 13:23:55,572 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:23:55,821 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:23:55,821 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix043.opt.i [2024-05-12 13:23:55,832 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8e9b4dbd/d99b58706f6b4d7da22cb7fa0f74e130/FLAG5d6e136cf [2024-05-12 13:23:55,842 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8e9b4dbd/d99b58706f6b4d7da22cb7fa0f74e130 [2024-05-12 13:23:55,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:23:55,845 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:23:55,848 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:23:55,848 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:23:55,852 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:23:55,852 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:23:54" (1/2) ... [2024-05-12 13:23:55,853 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c0d134b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:23:55, skipping insertion in model container [2024-05-12 13:23:55,853 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:23:54" (1/2) ... [2024-05-12 13:23:55,854 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6afc33d1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:23:55, skipping insertion in model container [2024-05-12 13:23:55,855 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:23:55" (2/2) ... [2024-05-12 13:23:55,855 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c0d134b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:55, skipping insertion in model container [2024-05-12 13:23:55,855 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:23:55" (2/2) ... [2024-05-12 13:23:55,856 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:23:55,959 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:23:55,961 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] (((((((((((((((((((((((! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2)))) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 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 || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0) [2024-05-12 13:23:55,961 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] (((((((((((((((((((((((! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2)))) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0) [2024-05-12 13:23:55,961 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] (((((((((((((((((((((((! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2)))) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 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 || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0) [2024-05-12 13:23:55,961 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((((! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2)))) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0) [2024-05-12 13:23:55,961 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:23:55,962 INFO L106 edCorrectnessWitness]: ghost_update [L849-L849] multithreaded = 1; [2024-05-12 13:23:56,000 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:23:56,142 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/mix043.opt.i[944,957] [2024-05-12 13:23:56,341 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:23:56,350 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:23:56,376 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/mix043.opt.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:23:56,466 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:23:56,505 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:23:56,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:56 WrapperNode [2024-05-12 13:23:56,506 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:23:56,507 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:23:56,507 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:23:56,507 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:23:56,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:56" (1/1) ... [2024-05-12 13:23:56,540 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:56" (1/1) ... [2024-05-12 13:23:56,584 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 175 [2024-05-12 13:23:56,587 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:23:56,587 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:23:56,588 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:23:56,588 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:23:56,596 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:56" (1/1) ... [2024-05-12 13:23:56,596 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:56" (1/1) ... [2024-05-12 13:23:56,600 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:56" (1/1) ... [2024-05-12 13:23:56,613 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 13:23:56,613 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:56" (1/1) ... [2024-05-12 13:23:56,613 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:56" (1/1) ... [2024-05-12 13:23:56,622 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:56" (1/1) ... [2024-05-12 13:23:56,623 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:56" (1/1) ... [2024-05-12 13:23:56,625 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:56" (1/1) ... [2024-05-12 13:23:56,627 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:56" (1/1) ... [2024-05-12 13:23:56,630 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:23:56,631 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:23:56,631 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:23:56,631 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:23:56,642 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:56" (1/1) ... [2024-05-12 13:23:56,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:23:56,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:23:56,665 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 13:23:56,679 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 13:23:56,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:23:56,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:23:56,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:23:56,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:23:56,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 13:23:56,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:23:56,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:23:56,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:23:56,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:23:56,706 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:23:56,706 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:23:56,706 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:23:56,707 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:23:56,708 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:23:56,708 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:23:56,709 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-05-12 13:23:56,727 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-05-12 13:23:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:23:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:23:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:23:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:23:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 13:23:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:23:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:23:56,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:23:56,729 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 13:23:56,888 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:23:56,890 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:23:57,187 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:23:57,187 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:23:57,318 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:23:57,318 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:23:57,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:23:57 BoogieIcfgContainer [2024-05-12 13:23:57,319 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:23:57,321 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:23:57,321 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:23:57,324 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:23:57,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:23:54" (1/4) ... [2024-05-12 13:23:57,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7909aa7e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:23:57, skipping insertion in model container [2024-05-12 13:23:57,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:23:55" (2/4) ... [2024-05-12 13:23:57,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7909aa7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:23:57, skipping insertion in model container [2024-05-12 13:23:57,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:56" (3/4) ... [2024-05-12 13:23:57,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7909aa7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:23:57, skipping insertion in model container [2024-05-12 13:23:57,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:23:57" (4/4) ... [2024-05-12 13:23:57,326 INFO L112 eAbstractionObserver]: Analyzing ICFG mix043.opt.i [2024-05-12 13:23:57,339 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:23:57,339 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-05-12 13:23:57,339 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:23:57,402 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:23:57,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 60 transitions, 136 flow [2024-05-12 13:23:57,451 INFO L124 PetriNetUnfolderBase]: 1/56 cut-off events. [2024-05-12 13:23:57,451 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:23:57,455 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 97 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 13:23:57,456 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 60 transitions, 136 flow [2024-05-12 13:23:57,459 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 56 transitions, 124 flow [2024-05-12 13:23:57,470 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:23:57,478 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;@6a6d1c1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:23:57,478 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-05-12 13:23:57,481 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:23:57,482 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:23:57,482 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:23:57,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:57,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:23:57,483 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:23:57,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:57,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1109642589, now seen corresponding path program 1 times [2024-05-12 13:23:57,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:57,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552178571] [2024-05-12 13:23:57,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:57,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:58,728 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 13:23:58,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:58,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552178571] [2024-05-12 13:23:58,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552178571] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:58,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:58,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:23:58,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144094369] [2024-05-12 13:23:58,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:58,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:23:58,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:58,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:23:58,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:23:58,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-05-12 13:23:58,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 13:23:58,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:58,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-05-12 13:23:58,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:01,161 INFO L124 PetriNetUnfolderBase]: 17474/25863 cut-off events. [2024-05-12 13:24:01,162 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-05-12 13:24:01,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49416 conditions, 25863 events. 17474/25863 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 1079. Compared 180262 event pairs, 14603 based on Foata normal form. 673/24823 useless extension candidates. Maximal degree in co-relation 49400. Up to 23295 conditions per place. [2024-05-12 13:24:01,309 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 54 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2024-05-12 13:24:01,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 75 transitions, 291 flow [2024-05-12 13:24:01,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:24:01,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:24:01,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-05-12 13:24:01,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-05-12 13:24:01,320 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 124 flow. Second operand 3 states and 123 transitions. [2024-05-12 13:24:01,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 75 transitions, 291 flow [2024-05-12 13:24:01,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 75 transitions, 284 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 13:24:01,340 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 164 flow [2024-05-12 13:24:01,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2024-05-12 13:24:01,344 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2024-05-12 13:24:01,345 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 164 flow [2024-05-12 13:24:01,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:01,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:01,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:01,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:24:01,346 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:24:01,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:01,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1214605694, now seen corresponding path program 1 times [2024-05-12 13:24:01,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:01,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084796318] [2024-05-12 13:24:01,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:01,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:02,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:02,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:02,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084796318] [2024-05-12 13:24:02,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084796318] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:02,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:02,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:24:02,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069794632] [2024-05-12 13:24:02,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:02,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:24:02,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:02,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:24:02,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:24:02,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 60 [2024-05-12 13:24:02,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:02,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:02,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 60 [2024-05-12 13:24:02,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:04,641 INFO L124 PetriNetUnfolderBase]: 19927/29134 cut-off events. [2024-05-12 13:24:04,642 INFO L125 PetriNetUnfolderBase]: For 5008/5008 co-relation queries the response was YES. [2024-05-12 13:24:04,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62738 conditions, 29134 events. 19927/29134 cut-off events. For 5008/5008 co-relation queries the response was YES. Maximal size of possible extension queue 1194. Compared 201254 event pairs, 14603 based on Foata normal form. 4/27492 useless extension candidates. Maximal degree in co-relation 62723. Up to 26481 conditions per place. [2024-05-12 13:24:04,815 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 70 selfloop transitions, 11 changer transitions 0/95 dead transitions. [2024-05-12 13:24:04,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 95 transitions, 416 flow [2024-05-12 13:24:04,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:24:04,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:24:04,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2024-05-12 13:24:04,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6541666666666667 [2024-05-12 13:24:04,818 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 164 flow. Second operand 4 states and 157 transitions. [2024-05-12 13:24:04,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 95 transitions, 416 flow [2024-05-12 13:24:04,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 95 transitions, 410 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:24:04,820 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 222 flow [2024-05-12 13:24:04,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=70, PETRI_TRANSITIONS=65} [2024-05-12 13:24:04,821 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 2 predicate places. [2024-05-12 13:24:04,821 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 222 flow [2024-05-12 13:24:04,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:04,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:04,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:04,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:24:04,822 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:24:04,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:04,822 INFO L85 PathProgramCache]: Analyzing trace with hash 782322239, now seen corresponding path program 1 times [2024-05-12 13:24:04,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:04,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817379053] [2024-05-12 13:24:04,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:04,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:05,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:05,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:05,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817379053] [2024-05-12 13:24:05,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817379053] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:05,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:05,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:24:05,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885478865] [2024-05-12 13:24:05,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:05,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:24:05,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:05,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:24:05,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:24:06,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-05-12 13:24:06,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:06,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:06,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-05-12 13:24:06,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:08,888 INFO L124 PetriNetUnfolderBase]: 25298/34536 cut-off events. [2024-05-12 13:24:08,888 INFO L125 PetriNetUnfolderBase]: For 14695/14695 co-relation queries the response was YES. [2024-05-12 13:24:08,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84558 conditions, 34536 events. 25298/34536 cut-off events. For 14695/14695 co-relation queries the response was YES. Maximal size of possible extension queue 1320. Compared 215592 event pairs, 10258 based on Foata normal form. 8/33447 useless extension candidates. Maximal degree in co-relation 84541. Up to 33399 conditions per place. [2024-05-12 13:24:09,080 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 98 selfloop transitions, 20 changer transitions 0/131 dead transitions. [2024-05-12 13:24:09,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 131 transitions, 644 flow [2024-05-12 13:24:09,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:24:09,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:24:09,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 224 transitions. [2024-05-12 13:24:09,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2024-05-12 13:24:09,085 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 222 flow. Second operand 6 states and 224 transitions. [2024-05-12 13:24:09,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 131 transitions, 644 flow [2024-05-12 13:24:09,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 131 transitions, 608 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-05-12 13:24:09,091 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 301 flow [2024-05-12 13:24:09,091 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 13:24:09,092 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 6 predicate places. [2024-05-12 13:24:09,093 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 301 flow [2024-05-12 13:24:09,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:09,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:09,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:09,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:24:09,094 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:24:09,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:09,094 INFO L85 PathProgramCache]: Analyzing trace with hash 235273080, now seen corresponding path program 1 times [2024-05-12 13:24:09,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:09,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743396408] [2024-05-12 13:24:09,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:09,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:10,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:10,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:10,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743396408] [2024-05-12 13:24:10,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743396408] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:10,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:10,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:24:10,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703899448] [2024-05-12 13:24:10,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:10,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:24:10,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:10,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:24:10,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:24:10,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-05-12 13:24:10,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:10,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:10,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-05-12 13:24:10,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:13,591 INFO L124 PetriNetUnfolderBase]: 24882/35087 cut-off events. [2024-05-12 13:24:13,591 INFO L125 PetriNetUnfolderBase]: For 27071/27071 co-relation queries the response was YES. [2024-05-12 13:24:13,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92686 conditions, 35087 events. 24882/35087 cut-off events. For 27071/27071 co-relation queries the response was YES. Maximal size of possible extension queue 1323. Compared 230417 event pairs, 11035 based on Foata normal form. 3/33880 useless extension candidates. Maximal degree in co-relation 92667. Up to 32956 conditions per place. [2024-05-12 13:24:13,815 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 82 selfloop transitions, 12 changer transitions 0/107 dead transitions. [2024-05-12 13:24:13,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 107 transitions, 587 flow [2024-05-12 13:24:13,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:24:13,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:24:13,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2024-05-12 13:24:13,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-05-12 13:24:13,818 INFO L175 Difference]: Start difference. First operand has 74 places, 73 transitions, 301 flow. Second operand 5 states and 168 transitions. [2024-05-12 13:24:13,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 107 transitions, 587 flow [2024-05-12 13:24:13,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 107 transitions, 538 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-05-12 13:24:13,831 INFO L231 Difference]: Finished difference. Result has 76 places, 78 transitions, 328 flow [2024-05-12 13:24:13,831 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 13:24:13,832 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 8 predicate places. [2024-05-12 13:24:13,833 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 78 transitions, 328 flow [2024-05-12 13:24:13,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:13,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:13,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:13,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:24:13,833 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:24:13,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:13,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1749791981, now seen corresponding path program 1 times [2024-05-12 13:24:13,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:13,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488511550] [2024-05-12 13:24:13,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:13,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:15,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:15,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:15,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488511550] [2024-05-12 13:24:15,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488511550] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:15,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:15,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:24:15,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240926875] [2024-05-12 13:24:15,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:15,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:24:15,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:15,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:24:15,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:24:15,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 60 [2024-05-12 13:24:15,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 78 transitions, 328 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:15,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:15,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 60 [2024-05-12 13:24:15,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:19,031 INFO L124 PetriNetUnfolderBase]: 28470/38789 cut-off events. [2024-05-12 13:24:19,032 INFO L125 PetriNetUnfolderBase]: For 46275/46297 co-relation queries the response was YES. [2024-05-12 13:24:19,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112017 conditions, 38789 events. 28470/38789 cut-off events. For 46275/46297 co-relation queries the response was YES. Maximal size of possible extension queue 1436. Compared 242401 event pairs, 12221 based on Foata normal form. 5/37575 useless extension candidates. Maximal degree in co-relation 111996. Up to 37548 conditions per place. [2024-05-12 13:24:19,268 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 98 selfloop transitions, 26 changer transitions 0/136 dead transitions. [2024-05-12 13:24:19,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 136 transitions, 788 flow [2024-05-12 13:24:19,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:24:19,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:24:19,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2024-05-12 13:24:19,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5722222222222222 [2024-05-12 13:24:19,271 INFO L175 Difference]: Start difference. First operand has 76 places, 78 transitions, 328 flow. Second operand 6 states and 206 transitions. [2024-05-12 13:24:19,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 136 transitions, 788 flow [2024-05-12 13:24:19,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 136 transitions, 750 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-05-12 13:24:19,280 INFO L231 Difference]: Finished difference. Result has 79 places, 88 transitions, 440 flow [2024-05-12 13:24:19,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=440, PETRI_PLACES=79, PETRI_TRANSITIONS=88} [2024-05-12 13:24:19,282 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 11 predicate places. [2024-05-12 13:24:19,282 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 88 transitions, 440 flow [2024-05-12 13:24:19,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:19,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:19,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:19,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:24:19,283 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:24:19,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:19,283 INFO L85 PathProgramCache]: Analyzing trace with hash -219337671, now seen corresponding path program 2 times [2024-05-12 13:24:19,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:19,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110782966] [2024-05-12 13:24:19,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:19,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:20,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:20,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:20,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110782966] [2024-05-12 13:24:20,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110782966] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:20,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:20,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:24:20,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043396823] [2024-05-12 13:24:20,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:20,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:24:20,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:20,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:24:20,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:24:20,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 60 [2024-05-12 13:24:20,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 88 transitions, 440 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:20,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:20,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 60 [2024-05-12 13:24:20,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:24,483 INFO L124 PetriNetUnfolderBase]: 28460/38803 cut-off events. [2024-05-12 13:24:24,483 INFO L125 PetriNetUnfolderBase]: For 66122/66176 co-relation queries the response was YES. [2024-05-12 13:24:24,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120727 conditions, 38803 events. 28460/38803 cut-off events. For 66122/66176 co-relation queries the response was YES. Maximal size of possible extension queue 1437. Compared 243068 event pairs, 12224 based on Foata normal form. 37/37623 useless extension candidates. Maximal degree in co-relation 120705. Up to 37538 conditions per place. [2024-05-12 13:24:24,716 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 92 selfloop transitions, 26 changer transitions 0/130 dead transitions. [2024-05-12 13:24:24,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 130 transitions, 774 flow [2024-05-12 13:24:24,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:24:24,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:24:24,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 200 transitions. [2024-05-12 13:24:24,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-05-12 13:24:24,718 INFO L175 Difference]: Start difference. First operand has 79 places, 88 transitions, 440 flow. Second operand 6 states and 200 transitions. [2024-05-12 13:24:24,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 130 transitions, 774 flow [2024-05-12 13:24:24,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 130 transitions, 712 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-05-12 13:24:24,761 INFO L231 Difference]: Finished difference. Result has 83 places, 88 transitions, 442 flow [2024-05-12 13:24:24,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=442, PETRI_PLACES=83, PETRI_TRANSITIONS=88} [2024-05-12 13:24:24,761 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 15 predicate places. [2024-05-12 13:24:24,762 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 88 transitions, 442 flow [2024-05-12 13:24:24,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:24,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:24,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:24,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:24:24,762 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:24:24,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:24,763 INFO L85 PathProgramCache]: Analyzing trace with hash -425749467, now seen corresponding path program 1 times [2024-05-12 13:24:24,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:24,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771616604] [2024-05-12 13:24:24,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:24,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:25,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:25,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:25,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771616604] [2024-05-12 13:24:25,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771616604] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:25,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:25,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:24:25,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882184620] [2024-05-12 13:24:25,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:25,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:24:25,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:25,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:24:25,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:24:25,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 60 [2024-05-12 13:24:25,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 88 transitions, 442 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:25,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:25,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 60 [2024-05-12 13:24:25,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:29,842 INFO L124 PetriNetUnfolderBase]: 28679/39131 cut-off events. [2024-05-12 13:24:29,842 INFO L125 PetriNetUnfolderBase]: For 69265/69315 co-relation queries the response was YES. [2024-05-12 13:24:29,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121261 conditions, 39131 events. 28679/39131 cut-off events. For 69265/69315 co-relation queries the response was YES. Maximal size of possible extension queue 1437. Compared 245049 event pairs, 12208 based on Foata normal form. 7/37890 useless extension candidates. Maximal degree in co-relation 121237. Up to 37780 conditions per place. [2024-05-12 13:24:30,120 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 129 selfloop transitions, 40 changer transitions 0/181 dead transitions. [2024-05-12 13:24:30,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 181 transitions, 1090 flow [2024-05-12 13:24:30,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:24:30,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:24:30,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 273 transitions. [2024-05-12 13:24:30,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56875 [2024-05-12 13:24:30,122 INFO L175 Difference]: Start difference. First operand has 83 places, 88 transitions, 442 flow. Second operand 8 states and 273 transitions. [2024-05-12 13:24:30,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 181 transitions, 1090 flow [2024-05-12 13:24:30,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 181 transitions, 998 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-05-12 13:24:30,151 INFO L231 Difference]: Finished difference. Result has 87 places, 112 transitions, 634 flow [2024-05-12 13:24:30,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=634, PETRI_PLACES=87, PETRI_TRANSITIONS=112} [2024-05-12 13:24:30,151 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 19 predicate places. [2024-05-12 13:24:30,152 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 112 transitions, 634 flow [2024-05-12 13:24:30,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:30,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:30,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:30,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:24:30,152 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:24:30,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:30,153 INFO L85 PathProgramCache]: Analyzing trace with hash -542355555, now seen corresponding path program 2 times [2024-05-12 13:24:30,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:30,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633648150] [2024-05-12 13:24:30,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:30,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:31,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:31,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:31,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633648150] [2024-05-12 13:24:31,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633648150] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:31,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:31,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:24:31,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808886990] [2024-05-12 13:24:31,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:31,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:24:31,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:31,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:24:31,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:24:31,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 60 [2024-05-12 13:24:31,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 112 transitions, 634 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:31,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:31,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 60 [2024-05-12 13:24:31,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:35,397 INFO L124 PetriNetUnfolderBase]: 28733/39213 cut-off events. [2024-05-12 13:24:35,397 INFO L125 PetriNetUnfolderBase]: For 95330/95418 co-relation queries the response was YES. [2024-05-12 13:24:35,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131582 conditions, 39213 events. 28733/39213 cut-off events. For 95330/95418 co-relation queries the response was YES. Maximal size of possible extension queue 1437. Compared 245057 event pairs, 12004 based on Foata normal form. 11/37971 useless extension candidates. Maximal degree in co-relation 131556. Up to 37807 conditions per place. [2024-05-12 13:24:35,826 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 126 selfloop transitions, 42 changer transitions 0/180 dead transitions. [2024-05-12 13:24:35,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 180 transitions, 1216 flow [2024-05-12 13:24:35,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:24:35,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:24:35,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 238 transitions. [2024-05-12 13:24:35,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-05-12 13:24:35,828 INFO L175 Difference]: Start difference. First operand has 87 places, 112 transitions, 634 flow. Second operand 7 states and 238 transitions. [2024-05-12 13:24:35,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 180 transitions, 1216 flow [2024-05-12 13:24:35,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 180 transitions, 1140 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-05-12 13:24:35,884 INFO L231 Difference]: Finished difference. Result has 91 places, 117 transitions, 727 flow [2024-05-12 13:24:35,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=727, PETRI_PLACES=91, PETRI_TRANSITIONS=117} [2024-05-12 13:24:35,884 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 23 predicate places. [2024-05-12 13:24:35,884 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 117 transitions, 727 flow [2024-05-12 13:24:35,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:35,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:35,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:35,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:24:35,885 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:24:35,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:35,886 INFO L85 PathProgramCache]: Analyzing trace with hash -371648475, now seen corresponding path program 3 times [2024-05-12 13:24:35,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:35,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955060586] [2024-05-12 13:24:35,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:35,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:37,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:37,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:37,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955060586] [2024-05-12 13:24:37,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955060586] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:37,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:37,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:24:37,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758169798] [2024-05-12 13:24:37,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:37,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:24:37,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:37,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:24:37,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:24:37,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 60 [2024-05-12 13:24:37,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 117 transitions, 727 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:37,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:37,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 60 [2024-05-12 13:24:37,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand