./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix027_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/mix027_power.oepc_pso.oepc_rmo.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/mix027_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-05-07_14-17-48.files/protection/mix027_power.oepc_pso.oepc_rmo.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 13:15:13,377 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:15:13,434 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:15:13,437 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:15:13,437 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:15:13,457 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:15:13,458 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:15:13,458 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:15:13,459 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:15:13,462 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:15:13,462 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:15:13,463 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:15:13,463 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:15:13,464 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:15:13,464 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:15:13,465 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:15:13,465 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:15:13,465 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:15:13,465 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:15:13,466 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:15:13,466 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:15:13,466 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:15:13,466 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:15:13,467 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:15:13,467 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:15:13,467 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:15:13,467 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:15:13,467 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:15:13,468 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:15:13,468 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:15:13,469 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:15:13,469 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:15:13,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:15:13,470 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:15:13,470 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:15:13,470 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:15:13,470 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:15:13,470 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:15:13,471 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:15:13,471 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:15:13,471 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:15:13,471 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:15:13,471 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:15:13,472 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:15:13,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:15:13,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:15:13,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:15:13,710 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:15:13,710 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:15:13,711 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix027_power.oepc_pso.oepc_rmo.oepc.i [2024-05-12 13:15:14,836 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:15:15,037 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:15:15,043 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix027_power.oepc_pso.oepc_rmo.oepc.i [2024-05-12 13:15:15,057 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3c7345ed/12772bae973d40a9a668d8e0a988c9bc/FLAG5ed77e7f3 [2024-05-12 13:15:15,067 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3c7345ed/12772bae973d40a9a668d8e0a988c9bc [2024-05-12 13:15:15,069 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:15:15,069 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:15:15,070 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix027_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-05-12 13:15:15,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:15:15,266 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:15:15,267 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:15:15,267 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:15:15,270 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:15:15,271 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:15:15" (1/2) ... [2024-05-12 13:15:15,272 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73f29400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:15:15, skipping insertion in model container [2024-05-12 13:15:15,272 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:15:15" (1/2) ... [2024-05-12 13:15:15,273 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1c691b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:15:15, skipping insertion in model container [2024-05-12 13:15:15,274 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:15:15" (2/2) ... [2024-05-12 13:15:15,274 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73f29400 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:15:15, skipping insertion in model container [2024-05-12 13:15:15,274 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:15:15" (2/2) ... [2024-05-12 13:15:15,274 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:15:15,389 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:15:15,390 INFO L97 edCorrectnessWitness]: Location invariant before [L869-L869] (((((((((((((((((((((! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 2) && __unbuffered_p3_EAX <= 127) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-05-12 13:15:15,390 INFO L97 edCorrectnessWitness]: Location invariant before [L872-L872] (((((((((((((((((((((! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 2) && __unbuffered_p3_EAX <= 127) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-05-12 13:15:15,390 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] (((((((((((((((((((((! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 2) && __unbuffered_p3_EAX <= 127) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-05-12 13:15:15,391 INFO L97 edCorrectnessWitness]: Location invariant before [L871-L871] (((((((((((((((((((((! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 2) && __unbuffered_p3_EAX <= 127) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-05-12 13:15:15,391 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:15:15,391 INFO L106 edCorrectnessWitness]: ghost_update [L865-L865] multithreaded = 1; [2024-05-12 13:15:15,430 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:15:15,573 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/mix027_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-05-12 13:15:15,743 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:15:15,752 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:15:15,781 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/mix027_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:15:15,850 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:15:15,883 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:15:15,883 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:15:15 WrapperNode [2024-05-12 13:15:15,884 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:15:15,885 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:15:15,885 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:15:15,885 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:15:15,890 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 01:15:15" (1/1) ... [2024-05-12 13:15:15,903 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 01:15:15" (1/1) ... [2024-05-12 13:15:15,935 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 150 [2024-05-12 13:15:15,935 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:15:15,936 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:15:15,936 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:15:15,936 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:15:15,953 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 01:15:15" (1/1) ... [2024-05-12 13:15:15,953 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 01:15:15" (1/1) ... [2024-05-12 13:15:15,963 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 01:15:15" (1/1) ... [2024-05-12 13:15:15,979 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 13:15:15,980 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 01:15:15" (1/1) ... [2024-05-12 13:15:15,980 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 01:15:15" (1/1) ... [2024-05-12 13:15:15,989 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 01:15:15" (1/1) ... [2024-05-12 13:15:15,991 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 01:15:15" (1/1) ... [2024-05-12 13:15:15,992 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 01:15:15" (1/1) ... [2024-05-12 13:15:15,994 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 01:15:15" (1/1) ... [2024-05-12 13:15:15,997 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:15:15,997 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:15:15,997 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:15:15,998 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:15:15,998 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 01:15:15" (1/1) ... [2024-05-12 13:15:16,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:15:16,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:15:16,052 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 13:15:16,070 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 13:15:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:15:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:15:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:15:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:15:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 13:15:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:15:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:15:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:15:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:15:16,083 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:15:16,083 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:15:16,083 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:15:16,083 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:15:16,085 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:15:16,085 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:15:16,085 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-05-12 13:15:16,085 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-05-12 13:15:16,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:15:16,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:15:16,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:15:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:15:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 13:15:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:15:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:15:16,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:15:16,087 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 13:15:16,206 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:15:16,207 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:15:16,615 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:15:16,615 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:15:16,742 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:15:16,743 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:15:16,743 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:15:16 BoogieIcfgContainer [2024-05-12 13:15:16,743 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:15:16,744 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:15:16,745 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:15:16,747 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:15:16,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:15:15" (1/4) ... [2024-05-12 13:15:16,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd206d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:15:16, skipping insertion in model container [2024-05-12 13:15:16,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:15:15" (2/4) ... [2024-05-12 13:15:16,748 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd206d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:15:16, skipping insertion in model container [2024-05-12 13:15:16,748 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 01:15:15" (3/4) ... [2024-05-12 13:15:16,748 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd206d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:15:16, skipping insertion in model container [2024-05-12 13:15:16,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:15:16" (4/4) ... [2024-05-12 13:15:16,749 INFO L112 eAbstractionObserver]: Analyzing ICFG mix027_power.oepc_pso.oepc_rmo.oepc.i [2024-05-12 13:15:16,761 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:15:16,761 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-05-12 13:15:16,761 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:15:16,798 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:15:16,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 59 transitions, 134 flow [2024-05-12 13:15:16,872 INFO L124 PetriNetUnfolderBase]: 1/55 cut-off events. [2024-05-12 13:15:16,873 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:15:16,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-05-12 13:15:16,877 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 59 transitions, 134 flow [2024-05-12 13:15:16,880 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 55 transitions, 122 flow [2024-05-12 13:15:16,892 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:15:16,898 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;@cd4f823, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:15:16,898 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-05-12 13:15:16,902 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:15:16,903 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:15:16,903 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:15:16,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:16,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:15:16,904 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:15:16,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:16,911 INFO L85 PathProgramCache]: Analyzing trace with hash -602594808, now seen corresponding path program 1 times [2024-05-12 13:15:16,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:16,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587592428] [2024-05-12 13:15:16,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:16,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:17,250 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 13:15:17,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:17,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587592428] [2024-05-12 13:15:17,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587592428] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:17,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:17,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:15:17,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031954972] [2024-05-12 13:15:17,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:17,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:15:17,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:17,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:15:17,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:15:17,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 59 [2024-05-12 13:15:17,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 122 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 13:15:17,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:17,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 59 [2024-05-12 13:15:17,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:17,940 INFO L124 PetriNetUnfolderBase]: 2590/4340 cut-off events. [2024-05-12 13:15:17,940 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-05-12 13:15:17,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8065 conditions, 4340 events. 2590/4340 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 28792 event pairs, 2121 based on Foata normal form. 108/4275 useless extension candidates. Maximal degree in co-relation 8049. Up to 2899 conditions per place. [2024-05-12 13:15:17,964 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 45 selfloop transitions, 2 changer transitions 2/74 dead transitions. [2024-05-12 13:15:17,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 74 transitions, 267 flow [2024-05-12 13:15:17,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:15:17,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:15:17,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2024-05-12 13:15:17,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7853107344632768 [2024-05-12 13:15:17,975 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 122 flow. Second operand 3 states and 139 transitions. [2024-05-12 13:15:17,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 74 transitions, 267 flow [2024-05-12 13:15:17,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 74 transitions, 260 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 13:15:17,984 INFO L231 Difference]: Finished difference. Result has 64 places, 52 transitions, 116 flow [2024-05-12 13:15:17,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=64, PETRI_TRANSITIONS=52} [2024-05-12 13:15:17,988 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -3 predicate places. [2024-05-12 13:15:17,988 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 52 transitions, 116 flow [2024-05-12 13:15:17,988 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 13:15:17,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:17,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:15:17,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:15:17,989 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:15:17,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:17,990 INFO L85 PathProgramCache]: Analyzing trace with hash -602594844, now seen corresponding path program 1 times [2024-05-12 13:15:17,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:17,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97852484] [2024-05-12 13:15:17,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:17,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:18,852 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 13:15:18,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:18,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97852484] [2024-05-12 13:15:18,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97852484] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:18,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:18,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:15:18,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254865000] [2024-05-12 13:15:18,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:18,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:15:18,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:18,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:15:18,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:15:18,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-05-12 13:15:18,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 13:15:18,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:18,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-05-12 13:15:18,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:21,790 INFO L124 PetriNetUnfolderBase]: 22287/33714 cut-off events. [2024-05-12 13:15:21,790 INFO L125 PetriNetUnfolderBase]: For 1220/1220 co-relation queries the response was YES. [2024-05-12 13:15:21,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65002 conditions, 33714 events. 22287/33714 cut-off events. For 1220/1220 co-relation queries the response was YES. Maximal size of possible extension queue 1287. Compared 242991 event pairs, 19091 based on Foata normal form. 1/32595 useless extension candidates. Maximal degree in co-relation 64988. Up to 29614 conditions per place. [2024-05-12 13:15:21,983 INFO L140 encePairwiseOnDemand]: 50/59 looper letters, 52 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2024-05-12 13:15:21,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 69 transitions, 272 flow [2024-05-12 13:15:21,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:15:21,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:15:21,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-05-12 13:15:21,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.615819209039548 [2024-05-12 13:15:21,986 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 116 flow. Second operand 3 states and 109 transitions. [2024-05-12 13:15:21,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 69 transitions, 272 flow [2024-05-12 13:15:21,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 69 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:15:21,988 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 151 flow [2024-05-12 13:15:21,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2024-05-12 13:15:21,989 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -3 predicate places. [2024-05-12 13:15:21,989 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 151 flow [2024-05-12 13:15:21,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 13:15:21,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:21,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:21,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:15:21,990 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:15:21,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:21,991 INFO L85 PathProgramCache]: Analyzing trace with hash 726985664, now seen corresponding path program 1 times [2024-05-12 13:15:21,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:21,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692746384] [2024-05-12 13:15:21,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:21,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:22,985 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 13:15:22,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:22,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692746384] [2024-05-12 13:15:22,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692746384] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:22,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:22,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:15:22,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207048398] [2024-05-12 13:15:22,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:22,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:15:22,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:22,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:15:22,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:15:23,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-05-12 13:15:23,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 13:15:23,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:23,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-05-12 13:15:23,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:25,608 INFO L124 PetriNetUnfolderBase]: 22284/33116 cut-off events. [2024-05-12 13:15:25,608 INFO L125 PetriNetUnfolderBase]: For 4946/4946 co-relation queries the response was YES. [2024-05-12 13:15:25,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69464 conditions, 33116 events. 22284/33116 cut-off events. For 4946/4946 co-relation queries the response was YES. Maximal size of possible extension queue 1249. Compared 230063 event pairs, 15638 based on Foata normal form. 4/32214 useless extension candidates. Maximal degree in co-relation 69449. Up to 29586 conditions per place. [2024-05-12 13:15:25,784 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 67 selfloop transitions, 10 changer transitions 0/89 dead transitions. [2024-05-12 13:15:25,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 89 transitions, 401 flow [2024-05-12 13:15:25,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:15:25,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:15:25,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-05-12 13:15:25,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.597457627118644 [2024-05-12 13:15:25,786 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 151 flow. Second operand 4 states and 141 transitions. [2024-05-12 13:15:25,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 89 transitions, 401 flow [2024-05-12 13:15:25,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 392 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:15:25,789 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 235 flow [2024-05-12 13:15:25,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-05-12 13:15:25,790 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 1 predicate places. [2024-05-12 13:15:25,790 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 235 flow [2024-05-12 13:15:25,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 13:15:25,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:25,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:25,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:15:25,791 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:15:25,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:25,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1060825995, now seen corresponding path program 1 times [2024-05-12 13:15:25,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:25,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540008097] [2024-05-12 13:15:25,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:25,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:26,713 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 13:15:26,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:26,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540008097] [2024-05-12 13:15:26,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540008097] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:26,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:26,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:15:26,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690074078] [2024-05-12 13:15:26,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:26,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:15:26,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:26,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:15:26,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:15:26,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-05-12 13:15:26,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 235 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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 13:15:26,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:26,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-05-12 13:15:26,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:29,598 INFO L124 PetriNetUnfolderBase]: 22461/33214 cut-off events. [2024-05-12 13:15:29,599 INFO L125 PetriNetUnfolderBase]: For 15334/15334 co-relation queries the response was YES. [2024-05-12 13:15:29,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77357 conditions, 33214 events. 22461/33214 cut-off events. For 15334/15334 co-relation queries the response was YES. Maximal size of possible extension queue 1235. Compared 229214 event pairs, 13128 based on Foata normal form. 10/32309 useless extension candidates. Maximal degree in co-relation 77339. Up to 29598 conditions per place. [2024-05-12 13:15:29,781 INFO L140 encePairwiseOnDemand]: 45/59 looper letters, 90 selfloop transitions, 23 changer transitions 0/125 dead transitions. [2024-05-12 13:15:29,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 125 transitions, 661 flow [2024-05-12 13:15:29,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:15:29,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:15:29,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 186 transitions. [2024-05-12 13:15:29,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6305084745762712 [2024-05-12 13:15:29,783 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 235 flow. Second operand 5 states and 186 transitions. [2024-05-12 13:15:29,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 125 transitions, 661 flow [2024-05-12 13:15:29,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 125 transitions, 646 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-05-12 13:15:29,788 INFO L231 Difference]: Finished difference. Result has 74 places, 80 transitions, 384 flow [2024-05-12 13:15:29,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=74, PETRI_TRANSITIONS=80} [2024-05-12 13:15:29,790 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 7 predicate places. [2024-05-12 13:15:29,790 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 80 transitions, 384 flow [2024-05-12 13:15:29,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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 13:15:29,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:29,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:29,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:15:29,791 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:15:29,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:29,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1474131871, now seen corresponding path program 1 times [2024-05-12 13:15:29,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:29,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630359022] [2024-05-12 13:15:29,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:29,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:30,916 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 13:15:30,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:30,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630359022] [2024-05-12 13:15:30,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630359022] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:30,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:30,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:15:30,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051571483] [2024-05-12 13:15:30,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:30,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:15:30,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:30,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:15:30,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:15:30,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-05-12 13:15:30,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 80 transitions, 384 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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 13:15:30,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:30,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-05-12 13:15:30,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:34,088 INFO L124 PetriNetUnfolderBase]: 22538/33448 cut-off events. [2024-05-12 13:15:34,088 INFO L125 PetriNetUnfolderBase]: For 37862/37862 co-relation queries the response was YES. [2024-05-12 13:15:34,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90955 conditions, 33448 events. 22538/33448 cut-off events. For 37862/37862 co-relation queries the response was YES. Maximal size of possible extension queue 1248. Compared 231836 event pairs, 11470 based on Foata normal form. 10/32543 useless extension candidates. Maximal degree in co-relation 90933. Up to 29612 conditions per place. [2024-05-12 13:15:34,288 INFO L140 encePairwiseOnDemand]: 44/59 looper letters, 104 selfloop transitions, 28 changer transitions 0/144 dead transitions. [2024-05-12 13:15:34,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 144 transitions, 874 flow [2024-05-12 13:15:34,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:15:34,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:15:34,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 221 transitions. [2024-05-12 13:15:34,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6242937853107344 [2024-05-12 13:15:34,290 INFO L175 Difference]: Start difference. First operand has 74 places, 80 transitions, 384 flow. Second operand 6 states and 221 transitions. [2024-05-12 13:15:34,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 144 transitions, 874 flow [2024-05-12 13:15:34,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 144 transitions, 862 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-05-12 13:15:34,305 INFO L231 Difference]: Finished difference. Result has 80 places, 85 transitions, 482 flow [2024-05-12 13:15:34,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=482, PETRI_PLACES=80, PETRI_TRANSITIONS=85} [2024-05-12 13:15:34,307 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2024-05-12 13:15:34,307 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 85 transitions, 482 flow [2024-05-12 13:15:34,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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 13:15:34,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:34,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:34,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:15:34,308 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:15:34,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:34,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1546552938, now seen corresponding path program 1 times [2024-05-12 13:15:34,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:34,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035735950] [2024-05-12 13:15:34,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:34,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:35,796 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 13:15:35,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:35,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035735950] [2024-05-12 13:15:35,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035735950] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:35,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:35,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:15:35,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798527019] [2024-05-12 13:15:35,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:35,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:15:35,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:35,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:15:35,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:15:35,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-05-12 13:15:35,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 85 transitions, 482 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 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 13:15:35,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:35,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-05-12 13:15:35,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:39,289 INFO L124 PetriNetUnfolderBase]: 22885/31874 cut-off events. [2024-05-12 13:15:39,289 INFO L125 PetriNetUnfolderBase]: For 57607/57613 co-relation queries the response was YES. [2024-05-12 13:15:39,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98811 conditions, 31874 events. 22885/31874 cut-off events. For 57607/57613 co-relation queries the response was YES. Maximal size of possible extension queue 1170. Compared 199174 event pairs, 8342 based on Foata normal form. 41/31745 useless extension candidates. Maximal degree in co-relation 98786. Up to 29558 conditions per place. [2024-05-12 13:15:39,476 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 125 selfloop transitions, 50 changer transitions 0/187 dead transitions. [2024-05-12 13:15:39,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 187 transitions, 1306 flow [2024-05-12 13:15:39,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:15:39,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:15:39,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 262 transitions. [2024-05-12 13:15:39,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6343825665859564 [2024-05-12 13:15:39,478 INFO L175 Difference]: Start difference. First operand has 80 places, 85 transitions, 482 flow. Second operand 7 states and 262 transitions. [2024-05-12 13:15:39,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 187 transitions, 1306 flow [2024-05-12 13:15:39,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 187 transitions, 1236 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-05-12 13:15:39,497 INFO L231 Difference]: Finished difference. Result has 85 places, 108 transitions, 780 flow [2024-05-12 13:15:39,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=780, PETRI_PLACES=85, PETRI_TRANSITIONS=108} [2024-05-12 13:15:39,500 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 18 predicate places. [2024-05-12 13:15:39,500 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 108 transitions, 780 flow [2024-05-12 13:15:39,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 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 13:15:39,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:39,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:39,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:15:39,501 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:15:39,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:39,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1487569703, now seen corresponding path program 1 times [2024-05-12 13:15:39,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:39,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732790527] [2024-05-12 13:15:39,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:39,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:40,202 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 13:15:40,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:40,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732790527] [2024-05-12 13:15:40,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732790527] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:40,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:40,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:15:40,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461794805] [2024-05-12 13:15:40,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:40,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:15:40,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:40,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:15:40,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:15:40,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-05-12 13:15:40,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 108 transitions, 780 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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 13:15:40,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:40,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-05-12 13:15:40,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:44,331 INFO L124 PetriNetUnfolderBase]: 26492/39508 cut-off events. [2024-05-12 13:15:44,331 INFO L125 PetriNetUnfolderBase]: For 112910/112910 co-relation queries the response was YES. [2024-05-12 13:15:44,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130095 conditions, 39508 events. 26492/39508 cut-off events. For 112910/112910 co-relation queries the response was YES. Maximal size of possible extension queue 1375. Compared 279686 event pairs, 13414 based on Foata normal form. 6/38590 useless extension candidates. Maximal degree in co-relation 130066. Up to 35097 conditions per place. [2024-05-12 13:15:44,628 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 105 selfloop transitions, 17 changer transitions 0/133 dead transitions. [2024-05-12 13:15:44,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 133 transitions, 1090 flow [2024-05-12 13:15:44,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:15:44,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:15:44,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2024-05-12 13:15:44,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5152542372881356 [2024-05-12 13:15:44,630 INFO L175 Difference]: Start difference. First operand has 85 places, 108 transitions, 780 flow. Second operand 5 states and 152 transitions. [2024-05-12 13:15:44,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 133 transitions, 1090 flow [2024-05-12 13:15:44,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 133 transitions, 1026 flow, removed 32 selfloop flow, removed 0 redundant places. [2024-05-12 13:15:44,685 INFO L231 Difference]: Finished difference. Result has 90 places, 108 transitions, 765 flow [2024-05-12 13:15:44,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=765, PETRI_PLACES=90, PETRI_TRANSITIONS=108} [2024-05-12 13:15:44,686 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 23 predicate places. [2024-05-12 13:15:44,686 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 108 transitions, 765 flow [2024-05-12 13:15:44,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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 13:15:44,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:44,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:44,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:15:44,687 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:15:44,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:44,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1535089277, now seen corresponding path program 1 times [2024-05-12 13:15:44,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:44,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357725999] [2024-05-12 13:15:44,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:44,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:45,827 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 13:15:45,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:45,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357725999] [2024-05-12 13:15:45,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357725999] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:45,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:45,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:15:45,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904211102] [2024-05-12 13:15:45,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:45,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:15:45,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:45,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:15:45,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:15:45,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-05-12 13:15:45,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 108 transitions, 765 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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 13:15:45,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:45,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-05-12 13:15:45,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:49,951 INFO L124 PetriNetUnfolderBase]: 26550/38933 cut-off events. [2024-05-12 13:15:49,951 INFO L125 PetriNetUnfolderBase]: For 98600/98600 co-relation queries the response was YES. [2024-05-12 13:15:50,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123640 conditions, 38933 events. 26550/38933 cut-off events. For 98600/98600 co-relation queries the response was YES. Maximal size of possible extension queue 1336. Compared 266437 event pairs, 11900 based on Foata normal form. 12/38023 useless extension candidates. Maximal degree in co-relation 123607. Up to 34910 conditions per place. [2024-05-12 13:15:50,241 INFO L140 encePairwiseOnDemand]: 45/59 looper letters, 116 selfloop transitions, 27 changer transitions 0/154 dead transitions. [2024-05-12 13:15:50,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 154 transitions, 1248 flow [2024-05-12 13:15:50,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:15:50,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:15:50,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2024-05-12 13:15:50,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5423728813559322 [2024-05-12 13:15:50,243 INFO L175 Difference]: Start difference. First operand has 90 places, 108 transitions, 765 flow. Second operand 6 states and 192 transitions. [2024-05-12 13:15:50,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 154 transitions, 1248 flow [2024-05-12 13:15:50,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 154 transitions, 1197 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-05-12 13:15:50,297 INFO L231 Difference]: Finished difference. Result has 92 places, 112 transitions, 826 flow [2024-05-12 13:15:50,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=826, PETRI_PLACES=92, PETRI_TRANSITIONS=112} [2024-05-12 13:15:50,299 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 25 predicate places. [2024-05-12 13:15:50,299 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 112 transitions, 826 flow [2024-05-12 13:15:50,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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 13:15:50,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:50,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:50,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:15:50,300 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:15:50,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:50,301 INFO L85 PathProgramCache]: Analyzing trace with hash -669578267, now seen corresponding path program 2 times [2024-05-12 13:15:50,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:50,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984599102] [2024-05-12 13:15:50,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:50,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:51,346 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 13:15:51,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:51,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984599102] [2024-05-12 13:15:51,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984599102] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:51,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:51,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:15:51,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977312821] [2024-05-12 13:15:51,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:51,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:15:51,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:51,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:15:51,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:15:51,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-05-12 13:15:51,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 112 transitions, 826 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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 13:15:51,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:51,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-05-12 13:15:51,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:55,781 INFO L124 PetriNetUnfolderBase]: 26499/39504 cut-off events. [2024-05-12 13:15:55,782 INFO L125 PetriNetUnfolderBase]: For 109053/109053 co-relation queries the response was YES. [2024-05-12 13:15:55,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125519 conditions, 39504 events. 26499/39504 cut-off events. For 109053/109053 co-relation queries the response was YES. Maximal size of possible extension queue 1375. Compared 279719 event pairs, 13394 based on Foata normal form. 6/38587 useless extension candidates. Maximal degree in co-relation 125486. Up to 35083 conditions per place. [2024-05-12 13:15:56,085 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 118 selfloop transitions, 16 changer transitions 0/145 dead transitions. [2024-05-12 13:15:56,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 145 transitions, 1180 flow [2024-05-12 13:15:56,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:15:56,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:15:56,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-05-12 13:15:56,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084745762711864 [2024-05-12 13:15:56,086 INFO L175 Difference]: Start difference. First operand has 92 places, 112 transitions, 826 flow. Second operand 6 states and 180 transitions. [2024-05-12 13:15:56,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 145 transitions, 1180 flow [2024-05-12 13:15:56,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 145 transitions, 1133 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-05-12 13:15:56,160 INFO L231 Difference]: Finished difference. Result has 95 places, 112 transitions, 822 flow [2024-05-12 13:15:56,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=822, PETRI_PLACES=95, PETRI_TRANSITIONS=112} [2024-05-12 13:15:56,161 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 28 predicate places. [2024-05-12 13:15:56,161 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 112 transitions, 822 flow [2024-05-12 13:15:56,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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 13:15:56,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:56,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:56,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 13:15:56,162 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:15:56,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:56,162 INFO L85 PathProgramCache]: Analyzing trace with hash -140686721, now seen corresponding path program 1 times [2024-05-12 13:15:56,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:56,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95619172] [2024-05-12 13:15:56,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:56,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:57,351 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 13:15:57,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:57,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95619172] [2024-05-12 13:15:57,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95619172] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:57,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:57,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:15:57,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638085955] [2024-05-12 13:15:57,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:57,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:15:57,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:57,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:15:57,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72