./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix057_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/mix057_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix057_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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 20:40:05,334 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 20:40:05,408 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 20:40:05,416 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 20:40:05,417 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 20:40:05,445 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 20:40:05,445 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 20:40:05,446 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 20:40:05,446 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 20:40:05,450 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 20:40:05,450 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 20:40:05,451 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 20:40:05,452 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 20:40:05,453 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 20:40:05,453 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 20:40:05,454 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 20:40:05,454 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 20:40:05,454 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 20:40:05,454 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 20:40:05,455 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 20:40:05,455 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 20:40:05,455 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 20:40:05,456 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 20:40:05,456 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 20:40:05,456 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 20:40:05,456 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 20:40:05,457 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 20:40:05,457 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 20:40:05,458 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 20:40:05,458 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 20:40:05,459 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 20:40:05,459 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 20:40:05,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:40:05,459 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 20:40:05,460 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 20:40:05,460 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 20:40:05,460 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 20:40:05,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 20:40:05,461 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 20:40:05,461 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 20:40:05,461 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 20:40:05,464 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 20:40:05,464 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 20:40:05,464 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 20:40:05,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 20:40:05,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 20:40:05,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 20:40:05,704 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 20:40:05,705 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 20:40:05,706 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 20:40:06,873 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 20:40:07,160 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 20:40:07,160 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 20:40:07,178 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3dbb0022/6e28356c0c7340bc9e9fd4973bee6c11/FLAGcbbbbe5fb [2024-06-27 20:40:07,193 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3dbb0022/6e28356c0c7340bc9e9fd4973bee6c11 [2024-06-27 20:40:07,195 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 20:40:07,196 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 20:40:07,196 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix057_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-27 20:40:07,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 20:40:07,429 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 20:40:07,430 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 20:40:07,430 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 20:40:07,434 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 20:40:07,435 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:40:07" (1/2) ... [2024-06-27 20:40:07,449 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27e13dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:40:07, skipping insertion in model container [2024-06-27 20:40:07,449 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:40:07" (1/2) ... [2024-06-27 20:40:07,451 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3f20b2b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:40:07, skipping insertion in model container [2024-06-27 20:40:07,452 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:40:07" (2/2) ... [2024-06-27 20:40:07,452 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27e13dcd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:40:07, skipping insertion in model container [2024-06-27 20:40:07,452 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:40:07" (2/2) ... [2024-06-27 20:40:07,452 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 20:40:07,580 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 20:40:07,582 INFO L97 edCorrectnessWitness]: Location invariant before [L864-L864] (((((((((((((((((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0) [2024-06-27 20:40:07,582 INFO L97 edCorrectnessWitness]: Location invariant before [L862-L862] (((((((((((((((((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0) [2024-06-27 20:40:07,582 INFO L97 edCorrectnessWitness]: Location invariant before [L860-L860] (((((((((((((((((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0) [2024-06-27 20:40:07,583 INFO L97 edCorrectnessWitness]: Location invariant before [L865-L865] (((((((((((((((((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0) [2024-06-27 20:40:07,583 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 20:40:07,584 INFO L106 edCorrectnessWitness]: ghost_update [L858-L858] multithreaded = 1; [2024-06-27 20:40:07,634 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 20:40:07,954 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:40:07,964 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 20:40:08,108 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:40:08,154 INFO L206 MainTranslator]: Completed translation [2024-06-27 20:40:08,154 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:40:08 WrapperNode [2024-06-27 20:40:08,155 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 20:40:08,155 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 20:40:08,156 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 20:40:08,156 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 20:40:08,162 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 27.06 08:40:08" (1/1) ... [2024-06-27 20:40:08,178 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 27.06 08:40:08" (1/1) ... [2024-06-27 20:40:08,209 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 136 [2024-06-27 20:40:08,210 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 20:40:08,211 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 20:40:08,211 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 20:40:08,211 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 20:40:08,227 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:40:08" (1/1) ... [2024-06-27 20:40:08,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:40:08" (1/1) ... [2024-06-27 20:40:08,232 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:40:08" (1/1) ... [2024-06-27 20:40:08,251 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 20:40:08,252 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:40:08" (1/1) ... [2024-06-27 20:40:08,252 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:40:08" (1/1) ... [2024-06-27 20:40:08,270 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:40:08" (1/1) ... [2024-06-27 20:40:08,272 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:40:08" (1/1) ... [2024-06-27 20:40:08,274 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:40:08" (1/1) ... [2024-06-27 20:40:08,276 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:40:08" (1/1) ... [2024-06-27 20:40:08,279 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 20:40:08,280 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 20:40:08,280 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 20:40:08,280 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 20:40:08,281 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:40:08" (1/1) ... [2024-06-27 20:40:08,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:40:08,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 20:40:08,312 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) [2024-06-27 20:40:08,335 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 [2024-06-27 20:40:08,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 20:40:08,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 20:40:08,364 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 20:40:08,364 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 20:40:08,364 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 20:40:08,365 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 20:40:08,366 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 20:40:08,366 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 20:40:08,366 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 20:40:08,366 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 20:40:08,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 20:40:08,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 20:40:08,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 20:40:08,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 20:40:08,369 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 20:40:08,539 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 20:40:08,541 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 20:40:08,918 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 20:40:08,918 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 20:40:09,122 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 20:40:09,122 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 20:40:09,123 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:40:09 BoogieIcfgContainer [2024-06-27 20:40:09,123 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 20:40:09,126 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 20:40:09,126 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 20:40:09,128 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 20:40:09,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 08:40:07" (1/4) ... [2024-06-27 20:40:09,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da5f845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 08:40:09, skipping insertion in model container [2024-06-27 20:40:09,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:40:07" (2/4) ... [2024-06-27 20:40:09,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da5f845 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:40:09, skipping insertion in model container [2024-06-27 20:40:09,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:40:08" (3/4) ... [2024-06-27 20:40:09,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da5f845 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:40:09, skipping insertion in model container [2024-06-27 20:40:09,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:40:09" (4/4) ... [2024-06-27 20:40:09,132 INFO L112 eAbstractionObserver]: Analyzing ICFG mix057_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 20:40:09,147 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 20:40:09,147 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 20:40:09,148 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 20:40:09,200 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 20:40:09,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 51 transitions, 118 flow [2024-06-27 20:40:09,266 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2024-06-27 20:40:09,267 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:40:09,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 0/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 20:40:09,269 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 51 transitions, 118 flow [2024-06-27 20:40:09,272 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 41 transitions, 94 flow [2024-06-27 20:40:09,287 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 20:40:09,295 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;@3d3b3f38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 20:40:09,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-27 20:40:09,301 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 20:40:09,301 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 20:40:09,301 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:40:09,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:09,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 20:40:09,302 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:40:09,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:09,307 INFO L85 PathProgramCache]: Analyzing trace with hash 392035071, now seen corresponding path program 1 times [2024-06-27 20:40:09,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:09,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093552837] [2024-06-27 20:40:09,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:09,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:10,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:10,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:10,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093552837] [2024-06-27 20:40:10,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093552837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:10,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:10,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 20:40:10,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220538275] [2024-06-27 20:40:10,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:10,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 20:40:10,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:10,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 20:40:10,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 20:40:10,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-27 20:40:10,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-06-27 20:40:10,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:10,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-27 20:40:10,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:12,981 INFO L124 PetriNetUnfolderBase]: 14075/18997 cut-off events. [2024-06-27 20:40:12,981 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2024-06-27 20:40:13,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38513 conditions, 18997 events. 14075/18997 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 97401 event pairs, 11070 based on Foata normal form. 1/18739 useless extension candidates. Maximal degree in co-relation 38500. Up to 18981 conditions per place. [2024-06-27 20:40:13,123 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 45 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-06-27 20:40:13,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 231 flow [2024-06-27 20:40:13,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 20:40:13,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 20:40:13,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-06-27 20:40:13,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2024-06-27 20:40:13,136 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 94 flow. Second operand 3 states and 90 transitions. [2024-06-27 20:40:13,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 231 flow [2024-06-27 20:40:13,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 20:40:13,145 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 129 flow [2024-06-27 20:40:13,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-27 20:40:13,151 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-06-27 20:40:13,151 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 129 flow [2024-06-27 20:40:13,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-06-27 20:40:13,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:13,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:13,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 20:40:13,153 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:40:13,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:13,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1211389410, now seen corresponding path program 1 times [2024-06-27 20:40:13,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:13,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129344062] [2024-06-27 20:40:13,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:13,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:13,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:13,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:13,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129344062] [2024-06-27 20:40:13,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129344062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:13,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:13,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 20:40:13,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233845396] [2024-06-27 20:40:13,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:13,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 20:40:13,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:13,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 20:40:13,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 20:40:13,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-27 20:40:13,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-06-27 20:40:13,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:13,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-27 20:40:13,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:16,009 INFO L124 PetriNetUnfolderBase]: 14065/18983 cut-off events. [2024-06-27 20:40:16,010 INFO L125 PetriNetUnfolderBase]: For 3370/3370 co-relation queries the response was YES. [2024-06-27 20:40:16,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43116 conditions, 18983 events. 14065/18983 cut-off events. For 3370/3370 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 97481 event pairs, 10115 based on Foata normal form. 4/18983 useless extension candidates. Maximal degree in co-relation 43104. Up to 18946 conditions per place. [2024-06-27 20:40:16,128 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 55 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2024-06-27 20:40:16,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 69 transitions, 323 flow [2024-06-27 20:40:16,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 20:40:16,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 20:40:16,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-06-27 20:40:16,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5686274509803921 [2024-06-27 20:40:16,132 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 129 flow. Second operand 4 states and 116 transitions. [2024-06-27 20:40:16,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 69 transitions, 323 flow [2024-06-27 20:40:16,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 69 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 20:40:16,136 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 177 flow [2024-06-27 20:40:16,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-06-27 20:40:16,137 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-06-27 20:40:16,138 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 177 flow [2024-06-27 20:40:16,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-06-27 20:40:16,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:16,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:16,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 20:40:16,142 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:40:16,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:16,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1101634934, now seen corresponding path program 1 times [2024-06-27 20:40:16,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:16,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197468280] [2024-06-27 20:40:16,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:16,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:16,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:16,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:16,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197468280] [2024-06-27 20:40:16,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197468280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:16,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:16,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 20:40:16,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024767944] [2024-06-27 20:40:16,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:16,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 20:40:16,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:16,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 20:40:17,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 20:40:17,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-27 20:40:17,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:17,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:17,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-27 20:40:17,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:19,352 INFO L124 PetriNetUnfolderBase]: 14083/19010 cut-off events. [2024-06-27 20:40:19,352 INFO L125 PetriNetUnfolderBase]: For 9698/9698 co-relation queries the response was YES. [2024-06-27 20:40:19,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47791 conditions, 19010 events. 14083/19010 cut-off events. For 9698/9698 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 97466 event pairs, 8523 based on Foata normal form. 7/19011 useless extension candidates. Maximal degree in co-relation 47777. Up to 18867 conditions per place. [2024-06-27 20:40:19,442 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 73 selfloop transitions, 21 changer transitions 0/99 dead transitions. [2024-06-27 20:40:19,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 99 transitions, 539 flow [2024-06-27 20:40:19,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:40:19,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:40:19,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2024-06-27 20:40:19,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.596078431372549 [2024-06-27 20:40:19,444 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 177 flow. Second operand 5 states and 152 transitions. [2024-06-27 20:40:19,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 99 transitions, 539 flow [2024-06-27 20:40:19,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 99 transitions, 520 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 20:40:19,449 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 308 flow [2024-06-27 20:40:19,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=308, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2024-06-27 20:40:19,450 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-06-27 20:40:19,450 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 308 flow [2024-06-27 20:40:19,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:19,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:19,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:19,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 20:40:19,451 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:40:19,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:19,452 INFO L85 PathProgramCache]: Analyzing trace with hash 345058197, now seen corresponding path program 1 times [2024-06-27 20:40:19,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:19,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640359785] [2024-06-27 20:40:19,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:19,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:20,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:20,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:20,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640359785] [2024-06-27 20:40:20,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640359785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:20,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:20,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:40:20,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734970845] [2024-06-27 20:40:20,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:20,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:40:20,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:20,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:40:20,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:40:20,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-27 20:40:20,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 308 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:20,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:20,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-27 20:40:20,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:22,426 INFO L124 PetriNetUnfolderBase]: 14101/19035 cut-off events. [2024-06-27 20:40:22,427 INFO L125 PetriNetUnfolderBase]: For 22858/22864 co-relation queries the response was YES. [2024-06-27 20:40:22,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55053 conditions, 19035 events. 14101/19035 cut-off events. For 22858/22864 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 97649 event pairs, 7568 based on Foata normal form. 11/19040 useless extension candidates. Maximal degree in co-relation 55036. Up to 18853 conditions per place. [2024-06-27 20:40:22,559 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 83 selfloop transitions, 26 changer transitions 0/114 dead transitions. [2024-06-27 20:40:22,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 114 transitions, 708 flow [2024-06-27 20:40:22,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:40:22,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:40:22,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2024-06-27 20:40:22,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5849673202614379 [2024-06-27 20:40:22,565 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 308 flow. Second operand 6 states and 179 transitions. [2024-06-27 20:40:22,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 114 transitions, 708 flow [2024-06-27 20:40:22,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 114 transitions, 696 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-27 20:40:22,581 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 402 flow [2024-06-27 20:40:22,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=402, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2024-06-27 20:40:22,583 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2024-06-27 20:40:22,583 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 402 flow [2024-06-27 20:40:22,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:22,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:22,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:22,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 20:40:22,584 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:40:22,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:22,585 INFO L85 PathProgramCache]: Analyzing trace with hash 2109249141, now seen corresponding path program 1 times [2024-06-27 20:40:22,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:22,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669398552] [2024-06-27 20:40:22,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:22,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:23,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:23,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:23,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669398552] [2024-06-27 20:40:23,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669398552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:23,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:23,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:40:23,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305402994] [2024-06-27 20:40:23,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:23,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:40:23,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:23,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:40:23,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:40:23,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-27 20:40:23,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 402 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 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) [2024-06-27 20:40:23,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:23,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-27 20:40:23,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:25,936 INFO L124 PetriNetUnfolderBase]: 14130/19078 cut-off events. [2024-06-27 20:40:25,937 INFO L125 PetriNetUnfolderBase]: For 36256/36262 co-relation queries the response was YES. [2024-06-27 20:40:25,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60718 conditions, 19078 events. 14130/19078 cut-off events. For 36256/36262 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 98013 event pairs, 6467 based on Foata normal form. 18/19090 useless extension candidates. Maximal degree in co-relation 60698. Up to 18818 conditions per place. [2024-06-27 20:40:26,041 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 90 selfloop transitions, 30 changer transitions 0/125 dead transitions. [2024-06-27 20:40:26,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 125 transitions, 852 flow [2024-06-27 20:40:26,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:40:26,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:40:26,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2024-06-27 20:40:26,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5658263305322129 [2024-06-27 20:40:26,048 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 402 flow. Second operand 7 states and 202 transitions. [2024-06-27 20:40:26,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 125 transitions, 852 flow [2024-06-27 20:40:26,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 125 transitions, 786 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 20:40:26,060 INFO L231 Difference]: Finished difference. Result has 69 places, 71 transitions, 441 flow [2024-06-27 20:40:26,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=441, PETRI_PLACES=69, PETRI_TRANSITIONS=71} [2024-06-27 20:40:26,064 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 15 predicate places. [2024-06-27 20:40:26,064 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 441 flow [2024-06-27 20:40:26,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 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) [2024-06-27 20:40:26,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:26,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:26,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 20:40:26,065 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:40:26,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:26,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1673469437, now seen corresponding path program 1 times [2024-06-27 20:40:26,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:26,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527582753] [2024-06-27 20:40:26,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:26,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:26,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:26,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:26,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527582753] [2024-06-27 20:40:26,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527582753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:26,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:26,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:40:26,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484141301] [2024-06-27 20:40:26,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:26,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:40:26,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:26,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:40:26,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:40:26,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:40:26,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 71 transitions, 441 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-06-27 20:40:26,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:26,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:40:26,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:28,645 INFO L124 PetriNetUnfolderBase]: 14121/19064 cut-off events. [2024-06-27 20:40:28,646 INFO L125 PetriNetUnfolderBase]: For 51278/51278 co-relation queries the response was YES. [2024-06-27 20:40:28,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65136 conditions, 19064 events. 14121/19064 cut-off events. For 51278/51278 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 97995 event pairs, 7483 based on Foata normal form. 3/19063 useless extension candidates. Maximal degree in co-relation 65114. Up to 19033 conditions per place. [2024-06-27 20:40:28,929 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 74 selfloop transitions, 10 changer transitions 0/88 dead transitions. [2024-06-27 20:40:28,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 88 transitions, 653 flow [2024-06-27 20:40:28,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:40:28,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:40:28,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-06-27 20:40:28,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470588235294118 [2024-06-27 20:40:28,931 INFO L175 Difference]: Start difference. First operand has 69 places, 71 transitions, 441 flow. Second operand 5 states and 114 transitions. [2024-06-27 20:40:28,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 88 transitions, 653 flow [2024-06-27 20:40:28,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 88 transitions, 566 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 20:40:28,946 INFO L231 Difference]: Finished difference. Result has 69 places, 71 transitions, 385 flow [2024-06-27 20:40:28,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=385, PETRI_PLACES=69, PETRI_TRANSITIONS=71} [2024-06-27 20:40:28,947 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 15 predicate places. [2024-06-27 20:40:28,947 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 385 flow [2024-06-27 20:40:28,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-06-27 20:40:28,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:28,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:28,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 20:40:28,948 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:40:28,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:28,948 INFO L85 PathProgramCache]: Analyzing trace with hash 313008961, now seen corresponding path program 1 times [2024-06-27 20:40:28,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:28,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587358524] [2024-06-27 20:40:28,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:28,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:29,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:29,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:29,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587358524] [2024-06-27 20:40:29,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587358524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:29,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:29,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:40:29,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957061762] [2024-06-27 20:40:29,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:29,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:40:29,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:29,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:40:29,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:40:29,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:40:29,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 71 transitions, 385 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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) [2024-06-27 20:40:29,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:29,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:40:29,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:31,895 INFO L124 PetriNetUnfolderBase]: 14145/19097 cut-off events. [2024-06-27 20:40:31,896 INFO L125 PetriNetUnfolderBase]: For 58241/58241 co-relation queries the response was YES. [2024-06-27 20:40:31,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66246 conditions, 19097 events. 14145/19097 cut-off events. For 58241/58241 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 97871 event pairs, 7102 based on Foata normal form. 10/19102 useless extension candidates. Maximal degree in co-relation 66222. Up to 18955 conditions per place. [2024-06-27 20:40:32,004 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 89 selfloop transitions, 22 changer transitions 0/115 dead transitions. [2024-06-27 20:40:32,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 115 transitions, 825 flow [2024-06-27 20:40:32,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:40:32,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:40:32,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-27 20:40:32,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738562091503268 [2024-06-27 20:40:32,006 INFO L175 Difference]: Start difference. First operand has 69 places, 71 transitions, 385 flow. Second operand 6 states and 145 transitions. [2024-06-27 20:40:32,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 115 transitions, 825 flow [2024-06-27 20:40:32,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 115 transitions, 796 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 20:40:32,027 INFO L231 Difference]: Finished difference. Result has 73 places, 85 transitions, 542 flow [2024-06-27 20:40:32,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=542, PETRI_PLACES=73, PETRI_TRANSITIONS=85} [2024-06-27 20:40:32,028 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2024-06-27 20:40:32,028 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 85 transitions, 542 flow [2024-06-27 20:40:32,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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) [2024-06-27 20:40:32,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:32,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:32,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 20:40:32,029 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:40:32,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:32,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1113129820, now seen corresponding path program 1 times [2024-06-27 20:40:32,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:32,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812957920] [2024-06-27 20:40:32,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:32,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:32,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:32,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:32,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812957920] [2024-06-27 20:40:32,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812957920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:32,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:32,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:40:32,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268314569] [2024-06-27 20:40:32,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:32,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:40:32,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:32,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:40:32,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:40:32,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:40:32,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 85 transitions, 542 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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) [2024-06-27 20:40:32,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:32,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:40:32,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:34,806 INFO L124 PetriNetUnfolderBase]: 14158/19116 cut-off events. [2024-06-27 20:40:34,806 INFO L125 PetriNetUnfolderBase]: For 82281/82293 co-relation queries the response was YES. [2024-06-27 20:40:34,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73334 conditions, 19116 events. 14158/19116 cut-off events. For 82281/82293 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 97846 event pairs, 7260 based on Foata normal form. 14/19124 useless extension candidates. Maximal degree in co-relation 73308. Up to 18967 conditions per place. [2024-06-27 20:40:34,916 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 90 selfloop transitions, 25 changer transitions 0/119 dead transitions. [2024-06-27 20:40:34,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 119 transitions, 921 flow [2024-06-27 20:40:34,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:40:34,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:40:34,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-27 20:40:34,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738562091503268 [2024-06-27 20:40:34,918 INFO L175 Difference]: Start difference. First operand has 73 places, 85 transitions, 542 flow. Second operand 6 states and 145 transitions. [2024-06-27 20:40:34,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 119 transitions, 921 flow [2024-06-27 20:40:34,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 119 transitions, 893 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-27 20:40:34,955 INFO L231 Difference]: Finished difference. Result has 78 places, 89 transitions, 610 flow [2024-06-27 20:40:34,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=610, PETRI_PLACES=78, PETRI_TRANSITIONS=89} [2024-06-27 20:40:34,956 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 24 predicate places. [2024-06-27 20:40:34,956 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 89 transitions, 610 flow [2024-06-27 20:40:34,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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) [2024-06-27 20:40:34,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:34,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:34,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 20:40:34,957 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:40:34,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:34,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1886413660, now seen corresponding path program 2 times [2024-06-27 20:40:34,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:34,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970247326] [2024-06-27 20:40:34,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:34,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:35,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:35,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:35,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970247326] [2024-06-27 20:40:35,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970247326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:35,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:35,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:40:35,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443956251] [2024-06-27 20:40:35,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:35,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:40:35,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:35,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:40:35,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:40:35,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:40:35,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 89 transitions, 610 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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) [2024-06-27 20:40:35,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:35,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:40:35,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:37,976 INFO L124 PetriNetUnfolderBase]: 14128/19069 cut-off events. [2024-06-27 20:40:37,976 INFO L125 PetriNetUnfolderBase]: For 90973/90973 co-relation queries the response was YES. [2024-06-27 20:40:38,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73983 conditions, 19069 events. 14128/19069 cut-off events. For 90973/90973 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 97507 event pairs, 7253 based on Foata normal form. 3/19068 useless extension candidates. Maximal degree in co-relation 73954. Up to 19023 conditions per place. [2024-06-27 20:40:38,079 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 95 selfloop transitions, 14 changer transitions 0/113 dead transitions. [2024-06-27 20:40:38,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 113 transitions, 890 flow [2024-06-27 20:40:38,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:40:38,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:40:38,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-27 20:40:38,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4411764705882353 [2024-06-27 20:40:38,081 INFO L175 Difference]: Start difference. First operand has 78 places, 89 transitions, 610 flow. Second operand 6 states and 135 transitions. [2024-06-27 20:40:38,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 113 transitions, 890 flow [2024-06-27 20:40:38,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 113 transitions, 847 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 20:40:38,117 INFO L231 Difference]: Finished difference. Result has 81 places, 89 transitions, 606 flow [2024-06-27 20:40:38,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=606, PETRI_PLACES=81, PETRI_TRANSITIONS=89} [2024-06-27 20:40:38,118 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 27 predicate places. [2024-06-27 20:40:38,118 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 89 transitions, 606 flow [2024-06-27 20:40:38,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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) [2024-06-27 20:40:38,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:38,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:38,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 20:40:38,120 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:40:38,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:38,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1862063798, now seen corresponding path program 1 times [2024-06-27 20:40:38,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:38,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263962667] [2024-06-27 20:40:38,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:38,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:38,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:38,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:38,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263962667] [2024-06-27 20:40:38,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263962667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:38,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:38,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:40:38,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78915347] [2024-06-27 20:40:38,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:38,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:40:38,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:38,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:40:38,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:40:39,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:40:39,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 89 transitions, 606 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 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) [2024-06-27 20:40:39,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:39,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:40:39,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:41,289 INFO L124 PetriNetUnfolderBase]: 14546/19630 cut-off events. [2024-06-27 20:40:41,289 INFO L125 PetriNetUnfolderBase]: For 107354/107363 co-relation queries the response was YES. [2024-06-27 20:40:41,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77722 conditions, 19630 events. 14546/19630 cut-off events. For 107354/107363 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 100754 event pairs, 6342 based on Foata normal form. 23/19644 useless extension candidates. Maximal degree in co-relation 77692. Up to 18881 conditions per place. [2024-06-27 20:40:41,407 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 114 selfloop transitions, 43 changer transitions 0/161 dead transitions. [2024-06-27 20:40:41,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 161 transitions, 1364 flow [2024-06-27 20:40:41,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:40:41,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:40:41,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-27 20:40:41,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070028011204482 [2024-06-27 20:40:41,409 INFO L175 Difference]: Start difference. First operand has 81 places, 89 transitions, 606 flow. Second operand 7 states and 181 transitions. [2024-06-27 20:40:41,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 161 transitions, 1364 flow [2024-06-27 20:40:41,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 161 transitions, 1304 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 20:40:41,455 INFO L231 Difference]: Finished difference. Result has 85 places, 113 transitions, 900 flow [2024-06-27 20:40:41,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=900, PETRI_PLACES=85, PETRI_TRANSITIONS=113} [2024-06-27 20:40:41,456 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 31 predicate places. [2024-06-27 20:40:41,456 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 113 transitions, 900 flow [2024-06-27 20:40:41,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 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) [2024-06-27 20:40:41,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:41,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:41,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 20:40:41,457 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:40:41,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:41,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1407604924, now seen corresponding path program 2 times [2024-06-27 20:40:41,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:41,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999623546] [2024-06-27 20:40:41,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:41,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:42,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:42,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:42,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999623546] [2024-06-27 20:40:42,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999623546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:42,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:42,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:40:42,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720129654] [2024-06-27 20:40:42,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:42,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:40:42,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:42,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:40:42,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:40:42,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:40:42,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 113 transitions, 900 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 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) [2024-06-27 20:40:42,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:42,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:40:42,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:44,845 INFO L124 PetriNetUnfolderBase]: 14632/19742 cut-off events. [2024-06-27 20:40:44,845 INFO L125 PetriNetUnfolderBase]: For 145984/145987 co-relation queries the response was YES. [2024-06-27 20:40:44,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88703 conditions, 19742 events. 14632/19742 cut-off events. For 145984/145987 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 101349 event pairs, 6692 based on Foata normal form. 12/19749 useless extension candidates. Maximal degree in co-relation 88669. Up to 19592 conditions per place. [2024-06-27 20:40:44,977 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 125 selfloop transitions, 27 changer transitions 0/156 dead transitions. [2024-06-27 20:40:44,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 156 transitions, 1444 flow [2024-06-27 20:40:44,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:40:44,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:40:44,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-27 20:40:44,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649859943977591 [2024-06-27 20:40:44,979 INFO L175 Difference]: Start difference. First operand has 85 places, 113 transitions, 900 flow. Second operand 7 states and 166 transitions. [2024-06-27 20:40:44,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 156 transitions, 1444 flow [2024-06-27 20:40:45,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 156 transitions, 1386 flow, removed 28 selfloop flow, removed 1 redundant places. [2024-06-27 20:40:45,057 INFO L231 Difference]: Finished difference. Result has 92 places, 120 transitions, 995 flow [2024-06-27 20:40:45,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=848, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=995, PETRI_PLACES=92, PETRI_TRANSITIONS=120} [2024-06-27 20:40:45,057 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 38 predicate places. [2024-06-27 20:40:45,057 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 120 transitions, 995 flow [2024-06-27 20:40:45,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 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) [2024-06-27 20:40:45,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:45,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:45,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 20:40:45,058 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:40:45,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:45,058 INFO L85 PathProgramCache]: Analyzing trace with hash 2114279412, now seen corresponding path program 3 times [2024-06-27 20:40:45,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:45,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51719347] [2024-06-27 20:40:45,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:45,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:45,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:45,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:45,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51719347] [2024-06-27 20:40:45,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51719347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:45,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:45,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:40:45,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198315748] [2024-06-27 20:40:45,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:45,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:40:45,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:45,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:40:45,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:40:45,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:40:45,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 120 transitions, 995 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 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) [2024-06-27 20:40:45,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:45,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:40:45,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:48,425 INFO L124 PetriNetUnfolderBase]: 14656/19774 cut-off events. [2024-06-27 20:40:48,425 INFO L125 PetriNetUnfolderBase]: For 169138/169141 co-relation queries the response was YES. [2024-06-27 20:40:48,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91724 conditions, 19774 events. 14656/19774 cut-off events. For 169138/169141 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 101529 event pairs, 6694 based on Foata normal form. 12/19781 useless extension candidates. Maximal degree in co-relation 91686. Up to 19493 conditions per place. [2024-06-27 20:40:48,579 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 129 selfloop transitions, 36 changer transitions 0/169 dead transitions. [2024-06-27 20:40:48,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 169 transitions, 1673 flow [2024-06-27 20:40:48,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:40:48,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:40:48,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 20:40:48,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-27 20:40:48,581 INFO L175 Difference]: Start difference. First operand has 92 places, 120 transitions, 995 flow. Second operand 7 states and 170 transitions. [2024-06-27 20:40:48,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 169 transitions, 1673 flow [2024-06-27 20:40:48,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 169 transitions, 1595 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 20:40:48,695 INFO L231 Difference]: Finished difference. Result has 96 places, 130 transitions, 1146 flow [2024-06-27 20:40:48,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1146, PETRI_PLACES=96, PETRI_TRANSITIONS=130} [2024-06-27 20:40:48,696 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 42 predicate places. [2024-06-27 20:40:48,696 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 130 transitions, 1146 flow [2024-06-27 20:40:48,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 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) [2024-06-27 20:40:48,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:48,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:48,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 20:40:48,697 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:40:48,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:48,698 INFO L85 PathProgramCache]: Analyzing trace with hash 153963136, now seen corresponding path program 1 times [2024-06-27 20:40:48,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:48,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719124236] [2024-06-27 20:40:48,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:48,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:50,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:50,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:50,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719124236] [2024-06-27 20:40:50,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719124236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:50,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:50,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:40:50,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030585664] [2024-06-27 20:40:50,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:50,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:40:50,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:50,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:40:50,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:40:50,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:40:50,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 130 transitions, 1146 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:50,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:50,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:40:50,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:52,700 INFO L124 PetriNetUnfolderBase]: 14676/19802 cut-off events. [2024-06-27 20:40:52,701 INFO L125 PetriNetUnfolderBase]: For 199638/199641 co-relation queries the response was YES. [2024-06-27 20:40:52,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95780 conditions, 19802 events. 14676/19802 cut-off events. For 199638/199641 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 101659 event pairs, 6527 based on Foata normal form. 12/19809 useless extension candidates. Maximal degree in co-relation 95741. Up to 19608 conditions per place. [2024-06-27 20:40:52,845 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 133 selfloop transitions, 33 changer transitions 0/170 dead transitions. [2024-06-27 20:40:52,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 170 transitions, 1712 flow [2024-06-27 20:40:52,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:40:52,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:40:52,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 20:40:52,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4677871148459384 [2024-06-27 20:40:52,846 INFO L175 Difference]: Start difference. First operand has 96 places, 130 transitions, 1146 flow. Second operand 7 states and 167 transitions. [2024-06-27 20:40:52,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 170 transitions, 1712 flow [2024-06-27 20:40:52,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 170 transitions, 1642 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-27 20:40:52,940 INFO L231 Difference]: Finished difference. Result has 100 places, 134 transitions, 1209 flow [2024-06-27 20:40:52,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1209, PETRI_PLACES=100, PETRI_TRANSITIONS=134} [2024-06-27 20:40:52,940 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 46 predicate places. [2024-06-27 20:40:52,941 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 134 transitions, 1209 flow [2024-06-27 20:40:52,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:52,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:52,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:52,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 20:40:52,941 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:40:52,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:52,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1169320473, now seen corresponding path program 1 times [2024-06-27 20:40:52,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:52,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451736943] [2024-06-27 20:40:52,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:52,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat