./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix055_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/mix055_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix055_tso.oepc.i ./goblint.2024-05-07_14-17-48.files/protection/mix055_tso.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 13:27:58,278 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:27:58,333 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:27:58,338 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:27:58,338 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:27:58,370 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:27:58,370 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:27:58,370 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:27:58,371 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:27:58,374 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:27:58,374 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:27:58,375 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:27:58,375 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:27:58,376 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:27:58,376 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:27:58,377 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:27:58,377 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:27:58,377 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:27:58,377 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:27:58,378 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:27:58,378 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:27:58,378 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:27:58,378 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:27:58,378 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:27:58,379 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:27:58,379 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:27:58,379 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:27:58,379 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:27:58,380 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:27:58,380 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:27:58,381 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:27:58,381 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:27:58,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:27:58,381 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:27:58,381 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:27:58,382 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:27:58,382 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:27:58,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:27:58,382 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:27:58,382 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:27:58,382 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:27:58,383 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:27:58,383 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:27:58,383 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:27:58,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:27:58,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:27:58,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:27:58,615 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:27:58,615 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:27:58,616 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix055_tso.oepc.i [2024-05-12 13:27:59,613 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:27:59,832 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:27:59,833 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix055_tso.oepc.i [2024-05-12 13:27:59,855 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e781757eb/8dde39cc9920454f94d854f6e776b91d/FLAGd1df26127 [2024-05-12 13:27:59,865 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e781757eb/8dde39cc9920454f94d854f6e776b91d [2024-05-12 13:27:59,867 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:27:59,870 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:27:59,870 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix055_tso.oepc.yml/witness.yml [2024-05-12 13:28:00,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:28:00,114 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:28:00,115 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:28:00,115 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:28:00,119 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:28:00,119 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:27:59" (1/2) ... [2024-05-12 13:28:00,120 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f17002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:28:00, skipping insertion in model container [2024-05-12 13:28:00,120 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:27:59" (1/2) ... [2024-05-12 13:28:00,122 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@243f08ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:28:00, skipping insertion in model container [2024-05-12 13:28:00,122 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:28:00" (2/2) ... [2024-05-12 13:28:00,123 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f17002 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:00, skipping insertion in model container [2024-05-12 13:28:00,123 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:28:00" (2/2) ... [2024-05-12 13:28:00,123 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:28:00,204 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:28:00,206 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] ((((((((((((((((((((! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0) [2024-05-12 13:28:00,206 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ((((((((((((((((((((! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0) [2024-05-12 13:28:00,206 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] ((((((((((((((((((((! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0) [2024-05-12 13:28:00,206 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ((((((((((((((((((((! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0) [2024-05-12 13:28:00,206 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:28:00,207 INFO L106 edCorrectnessWitness]: ghost_update [L847-L847] multithreaded = 1; [2024-05-12 13:28:00,244 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:28:00,360 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/mix055_tso.oepc.i[949,962] [2024-05-12 13:28:00,526 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:28:00,540 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:28:00,572 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/mix055_tso.oepc.i[949,962] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:28:00,673 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:28:00,701 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:28:00,703 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:00 WrapperNode [2024-05-12 13:28:00,703 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:28:00,704 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:28:00,705 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:28:00,705 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:28:00,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:00" (1/1) ... [2024-05-12 13:28:00,735 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:00" (1/1) ... [2024-05-12 13:28:00,773 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 166 [2024-05-12 13:28:00,781 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:28:00,782 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:28:00,782 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:28:00,783 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:28:00,791 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:00" (1/1) ... [2024-05-12 13:28:00,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:00" (1/1) ... [2024-05-12 13:28:00,795 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:00" (1/1) ... [2024-05-12 13:28:00,808 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 13:28:00,809 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:00" (1/1) ... [2024-05-12 13:28:00,809 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:00" (1/1) ... [2024-05-12 13:28:00,817 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:00" (1/1) ... [2024-05-12 13:28:00,818 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:00" (1/1) ... [2024-05-12 13:28:00,820 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:00" (1/1) ... [2024-05-12 13:28:00,822 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:00" (1/1) ... [2024-05-12 13:28:00,825 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:28:00,825 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:28:00,825 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:28:00,826 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:28:00,826 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:00" (1/1) ... [2024-05-12 13:28:00,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:28:00,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:28:00,858 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 13:28:00,871 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 13:28:00,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:28:00,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:28:00,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:28:00,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:28:00,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 13:28:00,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:28:00,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:28:00,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:28:00,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:28:00,913 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:28:00,913 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:28:00,913 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:28:00,913 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:28:00,915 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:28:00,915 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:28:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-05-12 13:28:00,916 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-05-12 13:28:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:28:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:28:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:28:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:28:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 13:28:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:28:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:28:00,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:28:00,918 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 13:28:01,082 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:28:01,084 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:28:01,527 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:28:01,527 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:28:01,677 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:28:01,678 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:28:01,678 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:28:01 BoogieIcfgContainer [2024-05-12 13:28:01,678 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:28:01,680 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:28:01,680 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:28:01,682 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:28:01,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:27:59" (1/4) ... [2024-05-12 13:28:01,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2dd36a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:28:01, skipping insertion in model container [2024-05-12 13:28:01,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:28:00" (2/4) ... [2024-05-12 13:28:01,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2dd36a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:28:01, skipping insertion in model container [2024-05-12 13:28:01,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:00" (3/4) ... [2024-05-12 13:28:01,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2dd36a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:28:01, skipping insertion in model container [2024-05-12 13:28:01,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:28:01" (4/4) ... [2024-05-12 13:28:01,685 INFO L112 eAbstractionObserver]: Analyzing ICFG mix055_tso.oepc.i [2024-05-12 13:28:01,698 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:28:01,698 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-05-12 13:28:01,698 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:28:01,747 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:28:01,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 58 transitions, 132 flow [2024-05-12 13:28:01,819 INFO L124 PetriNetUnfolderBase]: 1/54 cut-off events. [2024-05-12 13:28:01,820 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:28:01,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 54 events. 1/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2024-05-12 13:28:01,823 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 58 transitions, 132 flow [2024-05-12 13:28:01,826 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 54 transitions, 120 flow [2024-05-12 13:28:01,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:28:01,873 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;@4f01a309, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:28:01,873 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-05-12 13:28:01,876 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:28:01,876 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:28:01,876 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:28:01,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:01,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:28:01,877 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:28:01,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:01,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1120636838, now seen corresponding path program 1 times [2024-05-12 13:28:01,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:01,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052697879] [2024-05-12 13:28:01,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:01,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:02,996 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 13:28:02,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:02,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052697879] [2024-05-12 13:28:02,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052697879] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:02,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:02,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:28:02,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489470824] [2024-05-12 13:28:02,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:03,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:28:03,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:03,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:28:03,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:28:03,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 58 [2024-05-12 13:28:03,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 13:28:03,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:03,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 58 [2024-05-12 13:28:03,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:07,011 INFO L124 PetriNetUnfolderBase]: 29840/40845 cut-off events. [2024-05-12 13:28:07,012 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2024-05-12 13:28:07,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80880 conditions, 40845 events. 29840/40845 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 1459. Compared 252915 event pairs, 20473 based on Foata normal form. 1081/40057 useless extension candidates. Maximal degree in co-relation 80864. Up to 39493 conditions per place. [2024-05-12 13:28:07,200 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 56 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2024-05-12 13:28:07,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 73 transitions, 291 flow [2024-05-12 13:28:07,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:28:07,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:28:07,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-05-12 13:28:07,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6494252873563219 [2024-05-12 13:28:07,210 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 120 flow. Second operand 3 states and 113 transitions. [2024-05-12 13:28:07,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 73 transitions, 291 flow [2024-05-12 13:28:07,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 73 transitions, 284 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 13:28:07,215 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 160 flow [2024-05-12 13:28:07,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-05-12 13:28:07,218 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2024-05-12 13:28:07,219 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 160 flow [2024-05-12 13:28:07,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 13:28:07,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:07,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:07,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:28:07,220 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:28:07,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:07,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1104834617, now seen corresponding path program 1 times [2024-05-12 13:28:07,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:07,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828669909] [2024-05-12 13:28:07,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:07,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:07,978 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 13:28:07,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:07,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828669909] [2024-05-12 13:28:07,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828669909] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:07,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:07,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:28:07,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286967801] [2024-05-12 13:28:07,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:07,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:28:07,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:07,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:28:07,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:28:08,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 58 [2024-05-12 13:28:08,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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 13:28:08,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:08,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 58 [2024-05-12 13:28:08,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:11,987 INFO L124 PetriNetUnfolderBase]: 35659/50993 cut-off events. [2024-05-12 13:28:11,987 INFO L125 PetriNetUnfolderBase]: For 7582/7582 co-relation queries the response was YES. [2024-05-12 13:28:12,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109445 conditions, 50993 events. 35659/50993 cut-off events. For 7582/7582 co-relation queries the response was YES. Maximal size of possible extension queue 1807. Compared 345791 event pairs, 28509 based on Foata normal form. 4/47805 useless extension candidates. Maximal degree in co-relation 109430. Up to 47005 conditions per place. [2024-05-12 13:28:12,261 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 72 selfloop transitions, 11 changer transitions 0/93 dead transitions. [2024-05-12 13:28:12,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 93 transitions, 416 flow [2024-05-12 13:28:12,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:28:12,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:28:12,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2024-05-12 13:28:12,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6163793103448276 [2024-05-12 13:28:12,274 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 160 flow. Second operand 4 states and 143 transitions. [2024-05-12 13:28:12,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 93 transitions, 416 flow [2024-05-12 13:28:12,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 93 transitions, 410 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:28:12,277 INFO L231 Difference]: Finished difference. Result has 68 places, 63 transitions, 218 flow [2024-05-12 13:28:12,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=68, PETRI_TRANSITIONS=63} [2024-05-12 13:28:12,278 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2024-05-12 13:28:12,278 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 63 transitions, 218 flow [2024-05-12 13:28:12,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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 13:28:12,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:12,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:12,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:28:12,279 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:28:12,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:12,283 INFO L85 PathProgramCache]: Analyzing trace with hash -109863785, now seen corresponding path program 1 times [2024-05-12 13:28:12,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:12,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216345842] [2024-05-12 13:28:12,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:12,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:13,326 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 13:28:13,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:13,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216345842] [2024-05-12 13:28:13,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216345842] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:13,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:13,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:28:13,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894384117] [2024-05-12 13:28:13,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:13,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:28:13,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:13,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:28:13,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:28:13,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 58 [2024-05-12 13:28:13,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 63 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 13:28:13,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:13,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 58 [2024-05-12 13:28:13,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:17,639 INFO L124 PetriNetUnfolderBase]: 35633/50976 cut-off events. [2024-05-12 13:28:17,640 INFO L125 PetriNetUnfolderBase]: For 20402/20402 co-relation queries the response was YES. [2024-05-12 13:28:17,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120176 conditions, 50976 events. 35633/50976 cut-off events. For 20402/20402 co-relation queries the response was YES. Maximal size of possible extension queue 1806. Compared 349432 event pairs, 20815 based on Foata normal form. 8/47797 useless extension candidates. Maximal degree in co-relation 120159. Up to 46930 conditions per place. [2024-05-12 13:28:17,884 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 89 selfloop transitions, 19 changer transitions 0/118 dead transitions. [2024-05-12 13:28:17,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 118 transitions, 622 flow [2024-05-12 13:28:17,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:28:17,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:28:17,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 172 transitions. [2024-05-12 13:28:17,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.593103448275862 [2024-05-12 13:28:17,889 INFO L175 Difference]: Start difference. First operand has 68 places, 63 transitions, 218 flow. Second operand 5 states and 172 transitions. [2024-05-12 13:28:17,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 118 transitions, 622 flow [2024-05-12 13:28:17,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 118 transitions, 576 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-05-12 13:28:17,895 INFO L231 Difference]: Finished difference. Result has 73 places, 81 transitions, 367 flow [2024-05-12 13:28:17,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=367, PETRI_PLACES=73, PETRI_TRANSITIONS=81} [2024-05-12 13:28:17,897 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 7 predicate places. [2024-05-12 13:28:17,897 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 81 transitions, 367 flow [2024-05-12 13:28:17,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 13:28:17,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:17,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:17,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:28:17,898 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:28:17,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:17,898 INFO L85 PathProgramCache]: Analyzing trace with hash -110789064, now seen corresponding path program 1 times [2024-05-12 13:28:17,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:17,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314357489] [2024-05-12 13:28:17,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:17,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:17,981 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 13:28:17,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:17,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314357489] [2024-05-12 13:28:17,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314357489] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:17,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:17,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:28:17,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58291222] [2024-05-12 13:28:17,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:17,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:28:17,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:17,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:28:17,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:28:17,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 58 [2024-05-12 13:28:17,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 81 transitions, 367 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 13:28:17,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:17,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 58 [2024-05-12 13:28:17,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:19,246 INFO L124 PetriNetUnfolderBase]: 6715/11607 cut-off events. [2024-05-12 13:28:19,246 INFO L125 PetriNetUnfolderBase]: For 5002/6056 co-relation queries the response was YES. [2024-05-12 13:28:19,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25489 conditions, 11607 events. 6715/11607 cut-off events. For 5002/6056 co-relation queries the response was YES. Maximal size of possible extension queue 725. Compared 95536 event pairs, 3913 based on Foata normal form. 30/10631 useless extension candidates. Maximal degree in co-relation 25469. Up to 7804 conditions per place. [2024-05-12 13:28:19,325 INFO L140 encePairwiseOnDemand]: 55/58 looper letters, 47 selfloop transitions, 7 changer transitions 0/93 dead transitions. [2024-05-12 13:28:19,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 93 transitions, 474 flow [2024-05-12 13:28:19,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:28:19,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:28:19,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2024-05-12 13:28:19,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7528735632183908 [2024-05-12 13:28:19,327 INFO L175 Difference]: Start difference. First operand has 73 places, 81 transitions, 367 flow. Second operand 3 states and 131 transitions. [2024-05-12 13:28:19,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 93 transitions, 474 flow [2024-05-12 13:28:19,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 93 transitions, 462 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-05-12 13:28:19,333 INFO L231 Difference]: Finished difference. Result has 74 places, 75 transitions, 326 flow [2024-05-12 13:28:19,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=326, PETRI_PLACES=74, PETRI_TRANSITIONS=75} [2024-05-12 13:28:19,334 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2024-05-12 13:28:19,334 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 75 transitions, 326 flow [2024-05-12 13:28:19,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 13:28:19,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:19,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:19,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:28:19,335 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:28:19,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:19,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2074841070, now seen corresponding path program 1 times [2024-05-12 13:28:19,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:19,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669801363] [2024-05-12 13:28:19,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:19,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:20,763 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 13:28:20,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:20,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669801363] [2024-05-12 13:28:20,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669801363] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:20,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:20,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:28:20,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794981895] [2024-05-12 13:28:20,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:20,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:28:20,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:20,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:28:20,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:28:20,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 58 [2024-05-12 13:28:20,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 75 transitions, 326 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 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 13:28:20,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:20,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 58 [2024-05-12 13:28:20,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:24,414 INFO L124 PetriNetUnfolderBase]: 29369/42156 cut-off events. [2024-05-12 13:28:24,417 INFO L125 PetriNetUnfolderBase]: For 42502/42502 co-relation queries the response was YES. [2024-05-12 13:28:24,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107579 conditions, 42156 events. 29369/42156 cut-off events. For 42502/42502 co-relation queries the response was YES. Maximal size of possible extension queue 1461. Compared 282898 event pairs, 15860 based on Foata normal form. 8/41078 useless extension candidates. Maximal degree in co-relation 107557. Up to 38712 conditions per place. [2024-05-12 13:28:24,613 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 94 selfloop transitions, 20 changer transitions 1/125 dead transitions. [2024-05-12 13:28:24,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 125 transitions, 694 flow [2024-05-12 13:28:24,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:28:24,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:28:24,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-05-12 13:28:24,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5603448275862069 [2024-05-12 13:28:24,615 INFO L175 Difference]: Start difference. First operand has 74 places, 75 transitions, 326 flow. Second operand 6 states and 195 transitions. [2024-05-12 13:28:24,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 125 transitions, 694 flow [2024-05-12 13:28:24,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 125 transitions, 678 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:28:24,624 INFO L231 Difference]: Finished difference. Result has 77 places, 77 transitions, 389 flow [2024-05-12 13:28:24,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=389, PETRI_PLACES=77, PETRI_TRANSITIONS=77} [2024-05-12 13:28:24,626 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 11 predicate places. [2024-05-12 13:28:24,626 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 77 transitions, 389 flow [2024-05-12 13:28:24,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 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 13:28:24,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:24,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:24,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:28:24,627 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:28:24,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:24,628 INFO L85 PathProgramCache]: Analyzing trace with hash 904146419, now seen corresponding path program 1 times [2024-05-12 13:28:24,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:24,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223771120] [2024-05-12 13:28:24,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:24,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:25,459 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 13:28:25,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:25,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223771120] [2024-05-12 13:28:25,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223771120] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:25,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:25,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:28:25,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911368310] [2024-05-12 13:28:25,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:25,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:28:25,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:25,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:28:25,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:28:25,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 58 [2024-05-12 13:28:25,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 389 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 13:28:25,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:25,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 58 [2024-05-12 13:28:25,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:29,013 INFO L124 PetriNetUnfolderBase]: 24559/35951 cut-off events. [2024-05-12 13:28:29,013 INFO L125 PetriNetUnfolderBase]: For 46031/46031 co-relation queries the response was YES. [2024-05-12 13:28:29,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96632 conditions, 35951 events. 24559/35951 cut-off events. For 46031/46031 co-relation queries the response was YES. Maximal size of possible extension queue 1255. Compared 243135 event pairs, 15150 based on Foata normal form. 3/35049 useless extension candidates. Maximal degree in co-relation 96609. Up to 32565 conditions per place. [2024-05-12 13:28:29,186 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 89 selfloop transitions, 11 changer transitions 0/110 dead transitions. [2024-05-12 13:28:29,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 110 transitions, 718 flow [2024-05-12 13:28:29,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:28:29,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:28:29,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-05-12 13:28:29,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503448275862069 [2024-05-12 13:28:29,192 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 389 flow. Second operand 5 states and 146 transitions. [2024-05-12 13:28:29,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 110 transitions, 718 flow [2024-05-12 13:28:29,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 110 transitions, 655 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-05-12 13:28:29,215 INFO L231 Difference]: Finished difference. Result has 78 places, 86 transitions, 450 flow [2024-05-12 13:28:29,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=450, PETRI_PLACES=78, PETRI_TRANSITIONS=86} [2024-05-12 13:28:29,216 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2024-05-12 13:28:29,216 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 86 transitions, 450 flow [2024-05-12 13:28:29,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 13:28:29,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:29,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:29,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:28:29,217 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:28:29,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:29,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1295606226, now seen corresponding path program 1 times [2024-05-12 13:28:29,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:29,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105872933] [2024-05-12 13:28:29,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:29,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:30,086 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 13:28:30,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:30,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105872933] [2024-05-12 13:28:30,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105872933] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:30,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:30,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:28:30,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063928960] [2024-05-12 13:28:30,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:30,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:28:30,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:30,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:28:30,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:28:30,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 58 [2024-05-12 13:28:30,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 86 transitions, 450 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 13:28:30,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:30,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 58 [2024-05-12 13:28:30,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:34,130 INFO L124 PetriNetUnfolderBase]: 29413/42222 cut-off events. [2024-05-12 13:28:34,133 INFO L125 PetriNetUnfolderBase]: For 76477/76477 co-relation queries the response was YES. [2024-05-12 13:28:34,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121743 conditions, 42222 events. 29413/42222 cut-off events. For 76477/76477 co-relation queries the response was YES. Maximal size of possible extension queue 1421. Compared 280183 event pairs, 18082 based on Foata normal form. 3/41139 useless extension candidates. Maximal degree in co-relation 121717. Up to 38847 conditions per place. [2024-05-12 13:28:34,368 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 106 selfloop transitions, 16 changer transitions 0/131 dead transitions. [2024-05-12 13:28:34,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 131 transitions, 853 flow [2024-05-12 13:28:34,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:28:34,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:28:34,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 172 transitions. [2024-05-12 13:28:34,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942528735632184 [2024-05-12 13:28:34,370 INFO L175 Difference]: Start difference. First operand has 78 places, 86 transitions, 450 flow. Second operand 6 states and 172 transitions. [2024-05-12 13:28:34,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 131 transitions, 853 flow [2024-05-12 13:28:34,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 131 transitions, 828 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-05-12 13:28:34,393 INFO L231 Difference]: Finished difference. Result has 83 places, 95 transitions, 557 flow [2024-05-12 13:28:34,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=557, PETRI_PLACES=83, PETRI_TRANSITIONS=95} [2024-05-12 13:28:34,394 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 17 predicate places. [2024-05-12 13:28:34,394 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 95 transitions, 557 flow [2024-05-12 13:28:34,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 13:28:34,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:34,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:34,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:28:34,395 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:28:34,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:34,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1301349906, now seen corresponding path program 2 times [2024-05-12 13:28:34,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:34,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90312064] [2024-05-12 13:28:34,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:34,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:35,572 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 13:28:35,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:35,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90312064] [2024-05-12 13:28:35,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90312064] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:35,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:35,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:28:35,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427646404] [2024-05-12 13:28:35,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:35,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:28:35,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:35,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:28:35,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:28:35,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 58 [2024-05-12 13:28:35,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 95 transitions, 557 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 13:28:35,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:35,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 58 [2024-05-12 13:28:35,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:39,538 INFO L124 PetriNetUnfolderBase]: 29415/42228 cut-off events. [2024-05-12 13:28:39,538 INFO L125 PetriNetUnfolderBase]: For 104808/104844 co-relation queries the response was YES. [2024-05-12 13:28:39,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130496 conditions, 42228 events. 29415/42228 cut-off events. For 104808/104844 co-relation queries the response was YES. Maximal size of possible extension queue 1421. Compared 280643 event pairs, 17405 based on Foata normal form. 27/41166 useless extension candidates. Maximal degree in co-relation 130467. Up to 38802 conditions per place. [2024-05-12 13:28:39,780 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 103 selfloop transitions, 23 changer transitions 0/135 dead transitions. [2024-05-12 13:28:39,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 135 transitions, 951 flow [2024-05-12 13:28:39,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:28:39,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:28:39,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 173 transitions. [2024-05-12 13:28:39,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49712643678160917 [2024-05-12 13:28:39,781 INFO L175 Difference]: Start difference. First operand has 83 places, 95 transitions, 557 flow. Second operand 6 states and 173 transitions. [2024-05-12 13:28:39,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 135 transitions, 951 flow [2024-05-12 13:28:39,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 135 transitions, 908 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-05-12 13:28:39,806 INFO L231 Difference]: Finished difference. Result has 86 places, 99 transitions, 619 flow [2024-05-12 13:28:39,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=619, PETRI_PLACES=86, PETRI_TRANSITIONS=99} [2024-05-12 13:28:39,809 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 20 predicate places. [2024-05-12 13:28:39,809 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 99 transitions, 619 flow [2024-05-12 13:28:39,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 13:28:39,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:39,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:39,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:28:39,810 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:28:39,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:39,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1301358834, now seen corresponding path program 1 times [2024-05-12 13:28:39,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:39,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679537072] [2024-05-12 13:28:39,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:39,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:41,502 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 13:28:41,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:41,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679537072] [2024-05-12 13:28:41,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679537072] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:41,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:41,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:28:41,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874620787] [2024-05-12 13:28:41,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:41,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:28:41,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:41,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:28:41,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:28:41,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 58 [2024-05-12 13:28:41,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 99 transitions, 619 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 13:28:41,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:41,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 58 [2024-05-12 13:28:41,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand