./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix027_power.opt_pso.opt_rmo.opt.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/mix027_power.opt_pso.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix027_power.opt_pso.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix027_power.opt_pso.opt_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-eb4cb34-m [2024-06-21 16:37:36,826 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 16:37:36,884 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 16:37:36,889 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 16:37:36,890 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 16:37:36,922 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 16:37:36,922 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 16:37:36,922 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 16:37:36,923 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 16:37:36,926 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 16:37:36,926 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 16:37:36,926 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 16:37:36,927 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 16:37:36,928 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 16:37:36,928 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 16:37:36,928 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 16:37:36,928 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 16:37:36,929 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 16:37:36,929 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 16:37:36,929 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 16:37:36,929 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 16:37:36,929 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 16:37:36,929 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 16:37:36,930 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 16:37:36,930 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 16:37:36,930 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 16:37:36,930 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 16:37:36,930 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 16:37:36,930 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 16:37:36,931 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 16:37:36,931 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 16:37:36,931 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 16:37:36,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 16:37:36,932 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 16:37:36,932 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 16:37:36,932 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 16:37:36,932 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 16:37:36,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 16:37:36,932 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 16:37:36,933 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 16:37:36,933 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 16:37:36,933 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 16:37:36,933 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 16:37:36,933 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 16:37:37,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 16:37:37,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 16:37:37,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 16:37:37,135 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 16:37:37,136 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 16:37:37,137 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix027_power.opt_pso.opt_rmo.opt.i [2024-06-21 16:37:38,075 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 16:37:38,253 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 16:37:38,254 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix027_power.opt_pso.opt_rmo.opt.i [2024-06-21 16:37:38,264 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb1f0cf7d/e4979136add94489ae9d9d66439b9d1f/FLAG27a0ced56 [2024-06-21 16:37:38,277 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb1f0cf7d/e4979136add94489ae9d9d66439b9d1f [2024-06-21 16:37:38,278 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 16:37:38,279 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 16:37:38,279 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix027_power.opt_pso.opt_rmo.opt.yml/witness.yml [2024-06-21 16:37:38,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 16:37:38,439 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 16:37:38,439 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 16:37:38,440 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 16:37:38,443 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 16:37:38,444 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 04:37:38" (1/2) ... [2024-06-21 16:37:38,445 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4010d9b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:37:38, skipping insertion in model container [2024-06-21 16:37:38,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 04:37:38" (1/2) ... [2024-06-21 16:37:38,446 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@14ac3629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:37:38, skipping insertion in model container [2024-06-21 16:37:38,447 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:37:38" (2/2) ... [2024-06-21 16:37:38,447 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4010d9b9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:37:38, skipping insertion in model container [2024-06-21 16:37:38,447 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:37:38" (2/2) ... [2024-06-21 16:37:38,447 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 16:37:38,594 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 16:37:38,596 INFO L97 edCorrectnessWitness]: Location invariant before [L862-L862] (((((((((((((((((((((! multithreaded || y$flush_delayed == (_Bool)0) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0) [2024-06-21 16:37:38,596 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] (((((((((((((((((((((! multithreaded || y$flush_delayed == (_Bool)0) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0) [2024-06-21 16:37:38,596 INFO L97 edCorrectnessWitness]: Location invariant before [L857-L857] (((((((((((((((((((((! multithreaded || y$flush_delayed == (_Bool)0) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0) [2024-06-21 16:37:38,596 INFO L97 edCorrectnessWitness]: Location invariant before [L861-L861] (((((((((((((((((((((! multithreaded || y$flush_delayed == (_Bool)0) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0) [2024-06-21 16:37:38,596 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 16:37:38,597 INFO L106 edCorrectnessWitness]: ghost_update [L855-L855] multithreaded = 1; [2024-06-21 16:37:38,631 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 16:37:38,888 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 16:37:38,895 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 16:37:38,981 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 16:37:39,008 INFO L206 MainTranslator]: Completed translation [2024-06-21 16:37:39,009 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:37:39 WrapperNode [2024-06-21 16:37:39,009 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 16:37:39,010 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 16:37:39,010 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 16:37:39,010 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 16:37:39,015 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 21.06 04:37:39" (1/1) ... [2024-06-21 16:37:39,026 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 21.06 04:37:39" (1/1) ... [2024-06-21 16:37:39,051 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 138 [2024-06-21 16:37:39,051 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 16:37:39,052 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 16:37:39,052 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 16:37:39,052 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 16:37:39,061 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:37:39" (1/1) ... [2024-06-21 16:37:39,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:37:39" (1/1) ... [2024-06-21 16:37:39,077 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:37:39" (1/1) ... [2024-06-21 16:37:39,097 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]. [2024-06-21 16:37:39,102 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:37:39" (1/1) ... [2024-06-21 16:37:39,103 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:37:39" (1/1) ... [2024-06-21 16:37:39,109 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:37:39" (1/1) ... [2024-06-21 16:37:39,119 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:37:39" (1/1) ... [2024-06-21 16:37:39,124 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:37:39" (1/1) ... [2024-06-21 16:37:39,126 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:37:39" (1/1) ... [2024-06-21 16:37:39,128 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 16:37:39,131 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 16:37:39,131 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 16:37:39,132 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 16:37:39,132 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:37:39" (1/1) ... [2024-06-21 16:37:39,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 16:37:39,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 16:37:39,154 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) [2024-06-21 16:37:39,169 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 [2024-06-21 16:37:39,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 16:37:39,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 16:37:39,183 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 16:37:39,183 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 16:37:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 16:37:39,184 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 16:37:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-21 16:37:39,184 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-21 16:37:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-21 16:37:39,184 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-21 16:37:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 16:37:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 16:37:39,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 16:37:39,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 16:37:39,186 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 16:37:39,278 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 16:37:39,280 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 16:37:39,633 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 16:37:39,633 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 16:37:39,784 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 16:37:39,784 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 16:37:39,785 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 04:37:39 BoogieIcfgContainer [2024-06-21 16:37:39,785 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 16:37:39,787 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 16:37:39,787 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 16:37:39,789 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 16:37:39,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 04:37:38" (1/4) ... [2024-06-21 16:37:39,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270c2d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 04:37:39, skipping insertion in model container [2024-06-21 16:37:39,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:37:38" (2/4) ... [2024-06-21 16:37:39,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270c2d9d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 04:37:39, skipping insertion in model container [2024-06-21 16:37:39,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:37:39" (3/4) ... [2024-06-21 16:37:39,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270c2d9d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 04:37:39, skipping insertion in model container [2024-06-21 16:37:39,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 04:37:39" (4/4) ... [2024-06-21 16:37:39,792 INFO L112 eAbstractionObserver]: Analyzing ICFG mix027_power.opt_pso.opt_rmo.opt.i [2024-06-21 16:37:39,805 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 16:37:39,805 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-21 16:37:39,806 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 16:37:39,853 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 16:37:39,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2024-06-21 16:37:39,915 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-06-21 16:37:39,916 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 16:37:39,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 16:37:39,917 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2024-06-21 16:37:39,921 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 42 transitions, 96 flow [2024-06-21 16:37:39,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 16:37:39,935 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;@6e36c488, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 16:37:39,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-21 16:37:39,938 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 16:37:39,938 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 16:37:39,938 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 16:37:39,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:37:39,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 16:37:39,939 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)] === [2024-06-21 16:37:39,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:37:39,943 INFO L85 PathProgramCache]: Analyzing trace with hash 389343547, now seen corresponding path program 1 times [2024-06-21 16:37:39,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:37:39,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079295505] [2024-06-21 16:37:39,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:37:39,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:37:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:37:40,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:37:40,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:37:40,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079295505] [2024-06-21 16:37:40,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079295505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:37:40,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:37:40,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 16:37:40,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931641708] [2024-06-21 16:37:40,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:37:40,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 16:37:40,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:37:40,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 16:37:40,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 16:37:40,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-21 16:37:40,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-06-21 16:37:40,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:37:40,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-21 16:37:40,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:37:41,982 INFO L124 PetriNetUnfolderBase]: 8152/11675 cut-off events. [2024-06-21 16:37:41,983 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2024-06-21 16:37:42,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23162 conditions, 11675 events. 8152/11675 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 66021 event pairs, 6174 based on Foata normal form. 1/11317 useless extension candidates. Maximal degree in co-relation 23149. Up to 11108 conditions per place. [2024-06-21 16:37:42,092 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 42 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-06-21 16:37:42,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 227 flow [2024-06-21 16:37:42,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 16:37:42,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 16:37:42,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-06-21 16:37:42,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2024-06-21 16:37:42,104 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 96 flow. Second operand 3 states and 99 transitions. [2024-06-21 16:37:42,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 227 flow [2024-06-21 16:37:42,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 16:37:42,111 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 131 flow [2024-06-21 16:37:42,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-21 16:37:42,115 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2024-06-21 16:37:42,116 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 131 flow [2024-06-21 16:37:42,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-06-21 16:37:42,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:37:42,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:37:42,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 16:37:42,117 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)] === [2024-06-21 16:37:42,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:37:42,117 INFO L85 PathProgramCache]: Analyzing trace with hash 497081622, now seen corresponding path program 1 times [2024-06-21 16:37:42,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:37:42,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016178791] [2024-06-21 16:37:42,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:37:42,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:37:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:37:42,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:37:42,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:37:42,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016178791] [2024-06-21 16:37:42,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016178791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:37:42,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:37:42,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 16:37:42,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487019534] [2024-06-21 16:37:42,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:37:42,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 16:37:42,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:37:42,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 16:37:42,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 16:37:42,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-21 16:37:42,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-06-21 16:37:42,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:37:42,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-21 16:37:42,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:37:43,783 INFO L124 PetriNetUnfolderBase]: 9537/13256 cut-off events. [2024-06-21 16:37:43,783 INFO L125 PetriNetUnfolderBase]: For 2493/2493 co-relation queries the response was YES. [2024-06-21 16:37:43,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30019 conditions, 13256 events. 9537/13256 cut-off events. For 2493/2493 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 72098 event pairs, 6489 based on Foata normal form. 4/13254 useless extension candidates. Maximal degree in co-relation 30007. Up to 12918 conditions per place. [2024-06-21 16:37:43,853 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 53 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2024-06-21 16:37:43,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 321 flow [2024-06-21 16:37:43,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 16:37:43,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 16:37:43,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-06-21 16:37:43,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6057692307692307 [2024-06-21 16:37:43,859 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 131 flow. Second operand 4 states and 126 transitions. [2024-06-21 16:37:43,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 321 flow [2024-06-21 16:37:43,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 16:37:43,863 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 179 flow [2024-06-21 16:37:43,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-21 16:37:43,865 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-06-21 16:37:43,865 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 179 flow [2024-06-21 16:37:43,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-06-21 16:37:43,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:37:43,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:37:43,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 16:37:43,868 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)] === [2024-06-21 16:37:43,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:37:43,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1770337902, now seen corresponding path program 1 times [2024-06-21 16:37:43,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:37:43,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019101666] [2024-06-21 16:37:43,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:37:43,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:37:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:37:44,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:37:44,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:37:44,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019101666] [2024-06-21 16:37:44,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019101666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:37:44,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:37:44,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 16:37:44,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126133982] [2024-06-21 16:37:44,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:37:44,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 16:37:44,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:37:44,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 16:37:44,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 16:37:44,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-21 16:37:44,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-06-21 16:37:44,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:37:44,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-21 16:37:44,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:37:45,730 INFO L124 PetriNetUnfolderBase]: 9583/13365 cut-off events. [2024-06-21 16:37:45,730 INFO L125 PetriNetUnfolderBase]: For 7144/7144 co-relation queries the response was YES. [2024-06-21 16:37:45,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33653 conditions, 13365 events. 9583/13365 cut-off events. For 7144/7144 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 72865 event pairs, 4658 based on Foata normal form. 10/13370 useless extension candidates. Maximal degree in co-relation 33639. Up to 12775 conditions per place. [2024-06-21 16:37:45,800 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 74 selfloop transitions, 21 changer transitions 0/103 dead transitions. [2024-06-21 16:37:45,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 103 transitions, 549 flow [2024-06-21 16:37:45,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:37:45,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:37:45,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2024-06-21 16:37:45,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6461538461538462 [2024-06-21 16:37:45,802 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 179 flow. Second operand 5 states and 168 transitions. [2024-06-21 16:37:45,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 103 transitions, 549 flow [2024-06-21 16:37:45,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 103 transitions, 530 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-21 16:37:45,809 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 310 flow [2024-06-21 16:37:45,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=310, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2024-06-21 16:37:45,810 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-06-21 16:37:45,810 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 310 flow [2024-06-21 16:37:45,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-06-21 16:37:45,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:37:45,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:37:45,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 16:37:45,811 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)] === [2024-06-21 16:37:45,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:37:45,811 INFO L85 PathProgramCache]: Analyzing trace with hash 2089576653, now seen corresponding path program 1 times [2024-06-21 16:37:45,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:37:45,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649586278] [2024-06-21 16:37:45,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:37:45,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:37:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:37:46,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:37:46,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:37:46,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649586278] [2024-06-21 16:37:46,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649586278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:37:46,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:37:46,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:37:46,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713032193] [2024-06-21 16:37:46,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:37:46,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:37:46,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:37:46,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:37:46,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:37:46,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-21 16:37:46,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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) [2024-06-21 16:37:46,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:37:46,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-21 16:37:46,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:37:47,857 INFO L124 PetriNetUnfolderBase]: 9770/13654 cut-off events. [2024-06-21 16:37:47,857 INFO L125 PetriNetUnfolderBase]: For 17643/17643 co-relation queries the response was YES. [2024-06-21 16:37:47,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40263 conditions, 13654 events. 9770/13654 cut-off events. For 17643/17643 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 75024 event pairs, 3715 based on Foata normal form. 38/13687 useless extension candidates. Maximal degree in co-relation 40246. Up to 12776 conditions per place. [2024-06-21 16:37:47,929 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 85 selfloop transitions, 24 changer transitions 0/117 dead transitions. [2024-06-21 16:37:47,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 117 transitions, 708 flow [2024-06-21 16:37:47,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:37:47,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:37:47,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2024-06-21 16:37:47,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6314102564102564 [2024-06-21 16:37:47,931 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 310 flow. Second operand 6 states and 197 transitions. [2024-06-21 16:37:47,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 117 transitions, 708 flow [2024-06-21 16:37:47,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 117 transitions, 696 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-21 16:37:47,938 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 379 flow [2024-06-21 16:37:47,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=290, 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=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=379, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2024-06-21 16:37:47,939 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 12 predicate places. [2024-06-21 16:37:47,940 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 379 flow [2024-06-21 16:37:47,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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) [2024-06-21 16:37:47,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:37:47,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:37:47,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 16:37:47,940 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:37:47,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:37:47,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1631631860, now seen corresponding path program 1 times [2024-06-21 16:37:47,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:37:47,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363962761] [2024-06-21 16:37:47,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:37:47,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:37:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:37:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:37:48,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:37:48,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363962761] [2024-06-21 16:37:48,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363962761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:37:48,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:37:48,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:37:48,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924213156] [2024-06-21 16:37:48,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:37:48,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:37:48,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:37:48,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:37:48,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:37:48,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-21 16:37:48,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 379 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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) [2024-06-21 16:37:48,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:37:48,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-21 16:37:48,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:37:49,920 INFO L124 PetriNetUnfolderBase]: 8357/12036 cut-off events. [2024-06-21 16:37:49,920 INFO L125 PetriNetUnfolderBase]: For 22129/22129 co-relation queries the response was YES. [2024-06-21 16:37:49,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37932 conditions, 12036 events. 8357/12036 cut-off events. For 22129/22129 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 68710 event pairs, 4047 based on Foata normal form. 6/11870 useless extension candidates. Maximal degree in co-relation 37911. Up to 11393 conditions per place. [2024-06-21 16:37:50,006 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 66 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2024-06-21 16:37:50,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 84 transitions, 577 flow [2024-06-21 16:37:50,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:37:50,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:37:50,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-06-21 16:37:50,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076923076923077 [2024-06-21 16:37:50,008 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 379 flow. Second operand 5 states and 132 transitions. [2024-06-21 16:37:50,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 84 transitions, 577 flow [2024-06-21 16:37:50,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 84 transitions, 516 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-21 16:37:50,017 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 349 flow [2024-06-21 16:37:50,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=349, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2024-06-21 16:37:50,018 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 13 predicate places. [2024-06-21 16:37:50,018 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 349 flow [2024-06-21 16:37:50,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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) [2024-06-21 16:37:50,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:37:50,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:37:50,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 16:37:50,019 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)] === [2024-06-21 16:37:50,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:37:50,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1550863169, now seen corresponding path program 1 times [2024-06-21 16:37:50,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:37:50,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42735123] [2024-06-21 16:37:50,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:37:50,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:37:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:37:50,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:37:50,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:37:50,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42735123] [2024-06-21 16:37:50,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42735123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:37:50,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:37:50,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:37:50,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224603648] [2024-06-21 16:37:50,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:37:50,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:37:50,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:37:50,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:37:50,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:37:50,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 16:37:50,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 349 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 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) [2024-06-21 16:37:50,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:37:50,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 16:37:50,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:37:52,229 INFO L124 PetriNetUnfolderBase]: 9778/13646 cut-off events. [2024-06-21 16:37:52,229 INFO L125 PetriNetUnfolderBase]: For 29897/29897 co-relation queries the response was YES. [2024-06-21 16:37:52,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43802 conditions, 13646 events. 9778/13646 cut-off events. For 29897/29897 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 74599 event pairs, 4534 based on Foata normal form. 12/13654 useless extension candidates. Maximal degree in co-relation 43779. Up to 13062 conditions per place. [2024-06-21 16:37:52,294 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 71 selfloop transitions, 25 changer transitions 0/103 dead transitions. [2024-06-21 16:37:52,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 103 transitions, 684 flow [2024-06-21 16:37:52,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:37:52,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:37:52,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-06-21 16:37:52,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5256410256410257 [2024-06-21 16:37:52,298 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 349 flow. Second operand 6 states and 164 transitions. [2024-06-21 16:37:52,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 103 transitions, 684 flow [2024-06-21 16:37:52,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 103 transitions, 655 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-21 16:37:52,307 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 416 flow [2024-06-21 16:37:52,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=416, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2024-06-21 16:37:52,308 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-06-21 16:37:52,308 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 416 flow [2024-06-21 16:37:52,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 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) [2024-06-21 16:37:52,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:37:52,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:37:52,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 16:37:52,308 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)] === [2024-06-21 16:37:52,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:37:52,309 INFO L85 PathProgramCache]: Analyzing trace with hash 336356897, now seen corresponding path program 2 times [2024-06-21 16:37:52,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:37:52,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263831753] [2024-06-21 16:37:52,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:37:52,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:37:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:37:52,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:37:52,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:37:52,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263831753] [2024-06-21 16:37:52,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263831753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:37:52,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:37:52,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:37:52,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667635151] [2024-06-21 16:37:52,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:37:52,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:37:52,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:37:52,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:37:52,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:37:52,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 16:37:52,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 416 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 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) [2024-06-21 16:37:52,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:37:52,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 16:37:52,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:37:54,344 INFO L124 PetriNetUnfolderBase]: 9709/13518 cut-off events. [2024-06-21 16:37:54,344 INFO L125 PetriNetUnfolderBase]: For 35826/35826 co-relation queries the response was YES. [2024-06-21 16:37:54,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44655 conditions, 13518 events. 9709/13518 cut-off events. For 35826/35826 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 73557 event pairs, 4548 based on Foata normal form. 6/13518 useless extension candidates. Maximal degree in co-relation 44632. Up to 12969 conditions per place. [2024-06-21 16:37:54,415 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 64 selfloop transitions, 26 changer transitions 0/97 dead transitions. [2024-06-21 16:37:54,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 97 transitions, 664 flow [2024-06-21 16:37:54,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:37:54,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:37:54,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-21 16:37:54,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096153846153846 [2024-06-21 16:37:54,417 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 416 flow. Second operand 6 states and 159 transitions. [2024-06-21 16:37:54,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 97 transitions, 664 flow [2024-06-21 16:37:54,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 97 transitions, 621 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-21 16:37:54,431 INFO L231 Difference]: Finished difference. Result has 73 places, 70 transitions, 436 flow [2024-06-21 16:37:54,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=436, PETRI_PLACES=73, PETRI_TRANSITIONS=70} [2024-06-21 16:37:54,433 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2024-06-21 16:37:54,433 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 70 transitions, 436 flow [2024-06-21 16:37:54,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 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) [2024-06-21 16:37:54,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:37:54,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:37:54,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 16:37:54,433 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)] === [2024-06-21 16:37:54,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:37:54,434 INFO L85 PathProgramCache]: Analyzing trace with hash 470863009, now seen corresponding path program 1 times [2024-06-21 16:37:54,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:37:54,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574208976] [2024-06-21 16:37:54,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:37:54,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:37:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:37:55,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:37:55,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:37:55,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574208976] [2024-06-21 16:37:55,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574208976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:37:55,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:37:55,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:37:55,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175897302] [2024-06-21 16:37:55,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:37:55,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:37:55,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:37:55,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:37:55,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:37:55,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-21 16:37:55,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 70 transitions, 436 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:37:55,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:37:55,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-21 16:37:55,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:37:56,896 INFO L124 PetriNetUnfolderBase]: 8299/11726 cut-off events. [2024-06-21 16:37:56,896 INFO L125 PetriNetUnfolderBase]: For 36673/36673 co-relation queries the response was YES. [2024-06-21 16:37:56,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39736 conditions, 11726 events. 8299/11726 cut-off events. For 36673/36673 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 65163 event pairs, 3868 based on Foata normal form. 6/11604 useless extension candidates. Maximal degree in co-relation 39712. Up to 11267 conditions per place. [2024-06-21 16:37:56,955 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 84 selfloop transitions, 17 changer transitions 0/109 dead transitions. [2024-06-21 16:37:56,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 109 transitions, 775 flow [2024-06-21 16:37:56,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:37:56,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:37:56,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-21 16:37:56,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49725274725274726 [2024-06-21 16:37:56,957 INFO L175 Difference]: Start difference. First operand has 73 places, 70 transitions, 436 flow. Second operand 7 states and 181 transitions. [2024-06-21 16:37:56,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 109 transitions, 775 flow [2024-06-21 16:37:56,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 109 transitions, 684 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-21 16:37:56,975 INFO L231 Difference]: Finished difference. Result has 75 places, 77 transitions, 457 flow [2024-06-21 16:37:56,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=457, PETRI_PLACES=75, PETRI_TRANSITIONS=77} [2024-06-21 16:37:56,975 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 20 predicate places. [2024-06-21 16:37:56,975 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 77 transitions, 457 flow [2024-06-21 16:37:56,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:37:56,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:37:56,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:37:56,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 16:37:56,976 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:37:56,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:37:56,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1592886323, now seen corresponding path program 1 times [2024-06-21 16:37:56,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:37:56,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802823525] [2024-06-21 16:37:56,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:37:56,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:37:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:37:57,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:37:57,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:37:57,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802823525] [2024-06-21 16:37:57,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802823525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:37:57,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:37:57,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:37:57,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879646735] [2024-06-21 16:37:57,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:37:57,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:37:57,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:37:57,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:37:57,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:37:57,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-21 16:37:57,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 457 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 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) [2024-06-21 16:37:57,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:37:57,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-21 16:37:57,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:37:58,876 INFO L124 PetriNetUnfolderBase]: 8292/12001 cut-off events. [2024-06-21 16:37:58,876 INFO L125 PetriNetUnfolderBase]: For 44545/44545 co-relation queries the response was YES. [2024-06-21 16:37:58,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42591 conditions, 12001 events. 8292/12001 cut-off events. For 44545/44545 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 68756 event pairs, 3960 based on Foata normal form. 2/11852 useless extension candidates. Maximal degree in co-relation 42565. Up to 11309 conditions per place. [2024-06-21 16:37:58,954 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 77 selfloop transitions, 10 changer transitions 0/95 dead transitions. [2024-06-21 16:37:58,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 95 transitions, 699 flow [2024-06-21 16:37:58,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:37:58,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:37:58,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-06-21 16:37:58,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48846153846153845 [2024-06-21 16:37:58,957 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 457 flow. Second operand 5 states and 127 transitions. [2024-06-21 16:37:58,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 95 transitions, 699 flow [2024-06-21 16:37:58,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 95 transitions, 651 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-21 16:37:58,987 INFO L231 Difference]: Finished difference. Result has 76 places, 81 transitions, 478 flow [2024-06-21 16:37:58,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=478, PETRI_PLACES=76, PETRI_TRANSITIONS=81} [2024-06-21 16:37:58,988 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 21 predicate places. [2024-06-21 16:37:58,988 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 81 transitions, 478 flow [2024-06-21 16:37:58,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 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) [2024-06-21 16:37:58,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:37:58,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:37:58,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 16:37:58,989 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:37:58,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:37:58,989 INFO L85 PathProgramCache]: Analyzing trace with hash -2118747305, now seen corresponding path program 1 times [2024-06-21 16:37:58,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:37:58,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759754824] [2024-06-21 16:37:58,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:37:58,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:37:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:37:59,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:37:59,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:37:59,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759754824] [2024-06-21 16:37:59,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759754824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:37:59,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:37:59,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:37:59,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071081638] [2024-06-21 16:37:59,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:37:59,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:37:59,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:37:59,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:37:59,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:37:59,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 16:37:59,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 81 transitions, 478 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-06-21 16:37:59,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:37:59,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 16:37:59,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:38:01,176 INFO L124 PetriNetUnfolderBase]: 9690/13551 cut-off events. [2024-06-21 16:38:01,176 INFO L125 PetriNetUnfolderBase]: For 64845/64845 co-relation queries the response was YES. [2024-06-21 16:38:01,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51726 conditions, 13551 events. 9690/13551 cut-off events. For 64845/64845 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 74162 event pairs, 4708 based on Foata normal form. 3/13553 useless extension candidates. Maximal degree in co-relation 51699. Up to 13130 conditions per place. [2024-06-21 16:38:01,256 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 86 selfloop transitions, 22 changer transitions 0/115 dead transitions. [2024-06-21 16:38:01,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 115 transitions, 886 flow [2024-06-21 16:38:01,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:38:01,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:38:01,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-21 16:38:01,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-21 16:38:01,258 INFO L175 Difference]: Start difference. First operand has 76 places, 81 transitions, 478 flow. Second operand 6 states and 150 transitions. [2024-06-21 16:38:01,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 115 transitions, 886 flow [2024-06-21 16:38:01,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 115 transitions, 847 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-21 16:38:01,287 INFO L231 Difference]: Finished difference. Result has 81 places, 95 transitions, 633 flow [2024-06-21 16:38:01,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=633, PETRI_PLACES=81, PETRI_TRANSITIONS=95} [2024-06-21 16:38:01,287 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 26 predicate places. [2024-06-21 16:38:01,287 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 95 transitions, 633 flow [2024-06-21 16:38:01,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-06-21 16:38:01,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:38:01,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:38:01,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 16:38:01,288 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)] === [2024-06-21 16:38:01,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:38:01,289 INFO L85 PathProgramCache]: Analyzing trace with hash 684012600, now seen corresponding path program 1 times [2024-06-21 16:38:01,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:38:01,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318761455] [2024-06-21 16:38:01,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:38:01,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:38:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:38:02,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:38:02,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:38:02,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318761455] [2024-06-21 16:38:02,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318761455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:38:02,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:38:02,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:38:02,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840595862] [2024-06-21 16:38:02,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:38:02,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:38:02,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:38:02,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:38:02,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:38:02,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 16:38:02,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 95 transitions, 633 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:38:02,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:38:02,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 16:38:02,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:38:03,584 INFO L124 PetriNetUnfolderBase]: 10747/14971 cut-off events. [2024-06-21 16:38:03,584 INFO L125 PetriNetUnfolderBase]: For 99523/99621 co-relation queries the response was YES. [2024-06-21 16:38:03,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62449 conditions, 14971 events. 10747/14971 cut-off events. For 99523/99621 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 82663 event pairs, 3572 based on Foata normal form. 24/14881 useless extension candidates. Maximal degree in co-relation 62419. Up to 13599 conditions per place. [2024-06-21 16:38:03,690 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 105 selfloop transitions, 32 changer transitions 0/147 dead transitions. [2024-06-21 16:38:03,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 147 transitions, 1155 flow [2024-06-21 16:38:03,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:38:03,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:38:03,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-06-21 16:38:03,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5302197802197802 [2024-06-21 16:38:03,693 INFO L175 Difference]: Start difference. First operand has 81 places, 95 transitions, 633 flow. Second operand 7 states and 193 transitions. [2024-06-21 16:38:03,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 147 transitions, 1155 flow [2024-06-21 16:38:03,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 147 transitions, 1121 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-21 16:38:03,745 INFO L231 Difference]: Finished difference. Result has 87 places, 99 transitions, 736 flow [2024-06-21 16:38:03,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=736, PETRI_PLACES=87, PETRI_TRANSITIONS=99} [2024-06-21 16:38:03,746 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 32 predicate places. [2024-06-21 16:38:03,746 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 99 transitions, 736 flow [2024-06-21 16:38:03,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:38:03,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:38:03,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:38:03,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 16:38:03,747 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)] === [2024-06-21 16:38:03,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:38:03,747 INFO L85 PathProgramCache]: Analyzing trace with hash 684073050, now seen corresponding path program 2 times [2024-06-21 16:38:03,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:38:03,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754826428] [2024-06-21 16:38:03,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:38:03,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:38:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:38:04,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:38:04,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:38:04,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754826428] [2024-06-21 16:38:04,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754826428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:38:04,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:38:04,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:38:04,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313399518] [2024-06-21 16:38:04,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:38:04,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:38:04,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:38:04,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:38:04,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:38:04,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 16:38:04,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 99 transitions, 736 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:38:04,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:38:04,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 16:38:04,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:38:06,201 INFO L124 PetriNetUnfolderBase]: 10835/15123 cut-off events. [2024-06-21 16:38:06,201 INFO L125 PetriNetUnfolderBase]: For 117099/117197 co-relation queries the response was YES. [2024-06-21 16:38:06,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65369 conditions, 15123 events. 10835/15123 cut-off events. For 117099/117197 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 83909 event pairs, 4561 based on Foata normal form. 36/15041 useless extension candidates. Maximal degree in co-relation 65336. Up to 14235 conditions per place. [2024-06-21 16:38:06,314 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 102 selfloop transitions, 31 changer transitions 0/143 dead transitions. [2024-06-21 16:38:06,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 143 transitions, 1154 flow [2024-06-21 16:38:06,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:38:06,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:38:06,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-21 16:38:06,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192307692307693 [2024-06-21 16:38:06,316 INFO L175 Difference]: Start difference. First operand has 87 places, 99 transitions, 736 flow. Second operand 7 states and 189 transitions. [2024-06-21 16:38:06,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 143 transitions, 1154 flow [2024-06-21 16:38:06,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 143 transitions, 1099 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-21 16:38:06,399 INFO L231 Difference]: Finished difference. Result has 91 places, 102 transitions, 800 flow [2024-06-21 16:38:06,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=800, PETRI_PLACES=91, PETRI_TRANSITIONS=102} [2024-06-21 16:38:06,399 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 36 predicate places. [2024-06-21 16:38:06,400 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 102 transitions, 800 flow [2024-06-21 16:38:06,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:38:06,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:38:06,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:38:06,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 16:38:06,400 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:38:06,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:38:06,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1327828442, now seen corresponding path program 1 times [2024-06-21 16:38:06,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:38:06,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501650362] [2024-06-21 16:38:06,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:38:06,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:38:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:38:07,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:38:07,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:38:07,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501650362] [2024-06-21 16:38:07,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501650362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:38:07,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:38:07,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:38:07,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026698800] [2024-06-21 16:38:07,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:38:07,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:38:07,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:38:07,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:38:07,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:38:07,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 16:38:07,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 102 transitions, 800 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-06-21 16:38:07,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:38:07,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 16:38:07,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:38:08,514 INFO L124 PetriNetUnfolderBase]: 10842/15166 cut-off events. [2024-06-21 16:38:08,515 INFO L125 PetriNetUnfolderBase]: For 128339/128447 co-relation queries the response was YES. [2024-06-21 16:38:08,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67318 conditions, 15166 events. 10842/15166 cut-off events. For 128339/128447 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 84355 event pairs, 4841 based on Foata normal form. 2/15053 useless extension candidates. Maximal degree in co-relation 67283. Up to 14666 conditions per place. [2024-06-21 16:38:08,621 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 106 selfloop transitions, 14 changer transitions 0/130 dead transitions. [2024-06-21 16:38:08,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 130 transitions, 1148 flow [2024-06-21 16:38:08,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:38:08,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:38:08,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-21 16:38:08,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-21 16:38:08,622 INFO L175 Difference]: Start difference. First operand has 91 places, 102 transitions, 800 flow. Second operand 6 states and 150 transitions. [2024-06-21 16:38:08,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 130 transitions, 1148 flow [2024-06-21 16:38:08,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 130 transitions, 1067 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-21 16:38:08,745 INFO L231 Difference]: Finished difference. Result has 92 places, 106 transitions, 810 flow [2024-06-21 16:38:08,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=810, PETRI_PLACES=92, PETRI_TRANSITIONS=106} [2024-06-21 16:38:08,745 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 37 predicate places. [2024-06-21 16:38:08,745 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 106 transitions, 810 flow [2024-06-21 16:38:08,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-06-21 16:38:08,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:38:08,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:38:08,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 16:38:08,746 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:38:08,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:38:08,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1291333986, now seen corresponding path program 1 times [2024-06-21 16:38:08,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:38:08,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280049705] [2024-06-21 16:38:08,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:38:08,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:38:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:38:09,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:38:09,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:38:09,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280049705] [2024-06-21 16:38:09,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280049705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:38:09,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:38:09,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:38:09,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918801496] [2024-06-21 16:38:09,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:38:09,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:38:09,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:38:09,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:38:09,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:38:09,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 16:38:09,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 106 transitions, 810 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 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) [2024-06-21 16:38:09,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:38:09,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 16:38:09,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:38:11,492 INFO L124 PetriNetUnfolderBase]: 10900/15220 cut-off events. [2024-06-21 16:38:11,492 INFO L125 PetriNetUnfolderBase]: For 148726/148850 co-relation queries the response was YES. [2024-06-21 16:38:11,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70538 conditions, 15220 events. 10900/15220 cut-off events. For 148726/148850 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 84226 event pairs, 4585 based on Foata normal form. 6/15106 useless extension candidates. Maximal degree in co-relation 70502. Up to 14509 conditions per place. [2024-06-21 16:38:11,611 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 108 selfloop transitions, 37 changer transitions 0/155 dead transitions. [2024-06-21 16:38:11,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 155 transitions, 1286 flow [2024-06-21 16:38:11,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:38:11,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:38:11,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-21 16:38:11,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49759615384615385 [2024-06-21 16:38:11,613 INFO L175 Difference]: Start difference. First operand has 92 places, 106 transitions, 810 flow. Second operand 8 states and 207 transitions. [2024-06-21 16:38:11,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 155 transitions, 1286 flow [2024-06-21 16:38:11,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 155 transitions, 1225 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-21 16:38:11,710 INFO L231 Difference]: Finished difference. Result has 97 places, 114 transitions, 926 flow [2024-06-21 16:38:11,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=926, PETRI_PLACES=97, PETRI_TRANSITIONS=114} [2024-06-21 16:38:11,711 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 42 predicate places. [2024-06-21 16:38:11,711 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 114 transitions, 926 flow [2024-06-21 16:38:11,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 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) [2024-06-21 16:38:11,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:38:11,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:38:11,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 16:38:11,711 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:38:11,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:38:11,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1527509346, now seen corresponding path program 2 times [2024-06-21 16:38:11,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:38:11,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968478299] [2024-06-21 16:38:11,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:38:11,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:38:11,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:38:12,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:38:12,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:38:12,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968478299] [2024-06-21 16:38:12,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968478299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:38:12,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:38:12,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:38:12,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306338560] [2024-06-21 16:38:12,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:38:12,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:38:12,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:38:12,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:38:12,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:38:12,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 16:38:12,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 114 transitions, 926 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 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) [2024-06-21 16:38:12,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:38:12,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 16:38:12,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:38:14,500 INFO L124 PetriNetUnfolderBase]: 10885/15203 cut-off events. [2024-06-21 16:38:14,500 INFO L125 PetriNetUnfolderBase]: For 167750/167874 co-relation queries the response was YES. [2024-06-21 16:38:14,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73187 conditions, 15203 events. 10885/15203 cut-off events. For 167750/167874 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 84137 event pairs, 4582 based on Foata normal form. 6/15090 useless extension candidates. Maximal degree in co-relation 73149. Up to 14488 conditions per place. [2024-06-21 16:38:14,630 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 110 selfloop transitions, 45 changer transitions 0/165 dead transitions. [2024-06-21 16:38:14,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 165 transitions, 1468 flow [2024-06-21 16:38:14,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:38:14,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:38:14,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-21 16:38:14,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49759615384615385 [2024-06-21 16:38:14,632 INFO L175 Difference]: Start difference. First operand has 97 places, 114 transitions, 926 flow. Second operand 8 states and 207 transitions. [2024-06-21 16:38:14,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 165 transitions, 1468 flow [2024-06-21 16:38:14,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 165 transitions, 1348 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-21 16:38:14,761 INFO L231 Difference]: Finished difference. Result has 101 places, 125 transitions, 1055 flow [2024-06-21 16:38:14,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1055, PETRI_PLACES=101, PETRI_TRANSITIONS=125} [2024-06-21 16:38:14,762 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 46 predicate places. [2024-06-21 16:38:14,762 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 125 transitions, 1055 flow [2024-06-21 16:38:14,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 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) [2024-06-21 16:38:14,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:38:14,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:38:14,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 16:38:14,763 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:38:14,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:38:14,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1527806016, now seen corresponding path program 3 times [2024-06-21 16:38:14,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:38:14,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995229751] [2024-06-21 16:38:14,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:38:14,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:38:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:38:15,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:38:15,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:38:15,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995229751] [2024-06-21 16:38:15,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995229751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:38:15,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:38:15,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:38:15,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342259275] [2024-06-21 16:38:15,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:38:15,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:38:15,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:38:15,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:38:15,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:38:15,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 16:38:15,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 125 transitions, 1055 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 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) [2024-06-21 16:38:15,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:38:15,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 16:38:15,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:38:17,585 INFO L124 PetriNetUnfolderBase]: 10962/15338 cut-off events. [2024-06-21 16:38:17,586 INFO L125 PetriNetUnfolderBase]: For 188038/188162 co-relation queries the response was YES. [2024-06-21 16:38:17,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75958 conditions, 15338 events. 10962/15338 cut-off events. For 188038/188162 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 85221 event pairs, 4128 based on Foata normal form. 6/15225 useless extension candidates. Maximal degree in co-relation 75918. Up to 14327 conditions per place. [2024-06-21 16:38:17,678 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 108 selfloop transitions, 56 changer transitions 0/174 dead transitions. [2024-06-21 16:38:17,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 174 transitions, 1569 flow [2024-06-21 16:38:17,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:38:17,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:38:17,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-21 16:38:17,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072115384615384 [2024-06-21 16:38:17,680 INFO L175 Difference]: Start difference. First operand has 101 places, 125 transitions, 1055 flow. Second operand 8 states and 211 transitions. [2024-06-21 16:38:17,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 174 transitions, 1569 flow [2024-06-21 16:38:17,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 174 transitions, 1473 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-21 16:38:17,785 INFO L231 Difference]: Finished difference. Result has 107 places, 130 transitions, 1176 flow [2024-06-21 16:38:17,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=961, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1176, PETRI_PLACES=107, PETRI_TRANSITIONS=130} [2024-06-21 16:38:17,786 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 52 predicate places. [2024-06-21 16:38:17,786 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 130 transitions, 1176 flow [2024-06-21 16:38:17,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 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) [2024-06-21 16:38:17,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:38:17,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:38:17,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 16:38:17,788 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:38:17,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:38:17,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1755370900, now seen corresponding path program 2 times [2024-06-21 16:38:17,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:38:17,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480633339] [2024-06-21 16:38:17,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:38:17,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:38:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:38:18,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:38:18,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:38:18,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480633339] [2024-06-21 16:38:18,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480633339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:38:18,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:38:18,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:38:18,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602005790] [2024-06-21 16:38:18,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:38:18,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:38:18,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:38:18,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:38:18,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:38:18,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 16:38:18,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 130 transitions, 1176 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-06-21 16:38:18,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:38:18,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 16:38:18,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:38:19,924 INFO L124 PetriNetUnfolderBase]: 10955/15356 cut-off events. [2024-06-21 16:38:19,924 INFO L125 PetriNetUnfolderBase]: For 210006/210139 co-relation queries the response was YES. [2024-06-21 16:38:19,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78062 conditions, 15356 events. 10955/15356 cut-off events. For 210006/210139 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 85543 event pairs, 4589 based on Foata normal form. 10/15250 useless extension candidates. Maximal degree in co-relation 78020. Up to 14819 conditions per place. [2024-06-21 16:38:20,050 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 121 selfloop transitions, 21 changer transitions 0/152 dead transitions. [2024-06-21 16:38:20,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 152 transitions, 1568 flow [2024-06-21 16:38:20,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:38:20,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:38:20,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-21 16:38:20,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2024-06-21 16:38:20,051 INFO L175 Difference]: Start difference. First operand has 107 places, 130 transitions, 1176 flow. Second operand 6 states and 146 transitions. [2024-06-21 16:38:20,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 152 transitions, 1568 flow [2024-06-21 16:38:20,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 152 transitions, 1433 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-21 16:38:20,224 INFO L231 Difference]: Finished difference. Result has 108 places, 134 transitions, 1162 flow [2024-06-21 16:38:20,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1162, PETRI_PLACES=108, PETRI_TRANSITIONS=134} [2024-06-21 16:38:20,224 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 53 predicate places. [2024-06-21 16:38:20,224 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 134 transitions, 1162 flow [2024-06-21 16:38:20,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-06-21 16:38:20,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:38:20,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:38:20,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 16:38:20,225 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:38:20,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:38:20,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1691399896, now seen corresponding path program 1 times [2024-06-21 16:38:20,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:38:20,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874921177] [2024-06-21 16:38:20,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:38:20,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:38:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:38:20,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:38:20,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:38:20,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874921177] [2024-06-21 16:38:20,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874921177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:38:20,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:38:20,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:38:20,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302925913] [2024-06-21 16:38:20,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:38:20,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:38:20,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:38:20,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:38:20,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:38:20,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-21 16:38:20,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 134 transitions, 1162 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:38:20,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:38:20,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-21 16:38:20,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:38:22,409 INFO L124 PetriNetUnfolderBase]: 9595/13819 cut-off events. [2024-06-21 16:38:22,409 INFO L125 PetriNetUnfolderBase]: For 202844/202990 co-relation queries the response was YES. [2024-06-21 16:38:22,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71959 conditions, 13819 events. 9595/13819 cut-off events. For 202844/202990 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 80090 event pairs, 3819 based on Foata normal form. 4/13645 useless extension candidates. Maximal degree in co-relation 71916. Up to 13035 conditions per place. [2024-06-21 16:38:22,495 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 135 selfloop transitions, 14 changer transitions 0/160 dead transitions. [2024-06-21 16:38:22,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 160 transitions, 1570 flow [2024-06-21 16:38:22,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:38:22,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:38:22,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-21 16:38:22,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49038461538461536 [2024-06-21 16:38:22,496 INFO L175 Difference]: Start difference. First operand has 108 places, 134 transitions, 1162 flow. Second operand 6 states and 153 transitions. [2024-06-21 16:38:22,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 160 transitions, 1570 flow [2024-06-21 16:38:22,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 160 transitions, 1479 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-21 16:38:22,616 INFO L231 Difference]: Finished difference. Result has 110 places, 138 transitions, 1166 flow [2024-06-21 16:38:22,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1166, PETRI_PLACES=110, PETRI_TRANSITIONS=138} [2024-06-21 16:38:22,617 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 55 predicate places. [2024-06-21 16:38:22,617 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 138 transitions, 1166 flow [2024-06-21 16:38:22,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:38:22,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:38:22,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:38:22,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 16:38:22,617 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:38:22,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:38:22,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1755364948, now seen corresponding path program 2 times [2024-06-21 16:38:22,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:38:22,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842017979] [2024-06-21 16:38:22,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:38:22,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:38:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:38:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:38:23,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:38:23,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842017979] [2024-06-21 16:38:23,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842017979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:38:23,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:38:23,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:38:23,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338312933] [2024-06-21 16:38:23,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:38:23,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:38:23,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:38:23,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:38:23,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:38:23,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-21 16:38:23,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 138 transitions, 1166 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:38:23,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:38:23,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-21 16:38:23,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:38:24,693 INFO L124 PetriNetUnfolderBase]: 9604/13838 cut-off events. [2024-06-21 16:38:24,693 INFO L125 PetriNetUnfolderBase]: For 224300/224467 co-relation queries the response was YES. [2024-06-21 16:38:24,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74960 conditions, 13838 events. 9604/13838 cut-off events. For 224300/224467 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 80370 event pairs, 3826 based on Foata normal form. 8/13667 useless extension candidates. Maximal degree in co-relation 74916. Up to 13020 conditions per place. [2024-06-21 16:38:24,802 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 130 selfloop transitions, 21 changer transitions 0/162 dead transitions. [2024-06-21 16:38:24,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 162 transitions, 1584 flow [2024-06-21 16:38:24,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:38:24,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:38:24,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-21 16:38:24,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49038461538461536 [2024-06-21 16:38:24,803 INFO L175 Difference]: Start difference. First operand has 110 places, 138 transitions, 1166 flow. Second operand 6 states and 153 transitions. [2024-06-21 16:38:24,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 162 transitions, 1584 flow [2024-06-21 16:38:24,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 162 transitions, 1519 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-21 16:38:24,954 INFO L231 Difference]: Finished difference. Result has 112 places, 142 transitions, 1218 flow [2024-06-21 16:38:24,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1218, PETRI_PLACES=112, PETRI_TRANSITIONS=142} [2024-06-21 16:38:24,954 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 57 predicate places. [2024-06-21 16:38:24,954 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 142 transitions, 1218 flow [2024-06-21 16:38:24,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:38:24,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:38:24,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:38:24,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 16:38:24,955 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:38:24,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:38:24,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1755357012, now seen corresponding path program 1 times [2024-06-21 16:38:24,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:38:24,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279182438] [2024-06-21 16:38:24,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:38:24,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:38:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:38:25,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:38:25,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:38:25,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279182438] [2024-06-21 16:38:25,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279182438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:38:25,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:38:25,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:38:25,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68352560] [2024-06-21 16:38:25,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:38:25,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:38:25,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:38:25,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:38:25,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:38:25,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 16:38:25,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 142 transitions, 1218 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:38:25,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:38:25,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 16:38:25,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:38:27,429 INFO L124 PetriNetUnfolderBase]: 10271/14539 cut-off events. [2024-06-21 16:38:27,429 INFO L125 PetriNetUnfolderBase]: For 274063/274063 co-relation queries the response was YES. [2024-06-21 16:38:27,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82927 conditions, 14539 events. 10271/14539 cut-off events. For 274063/274063 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 81645 event pairs, 4266 based on Foata normal form. 3/14541 useless extension candidates. Maximal degree in co-relation 82882. Up to 13979 conditions per place. [2024-06-21 16:38:27,529 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 137 selfloop transitions, 27 changer transitions 0/171 dead transitions. [2024-06-21 16:38:27,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 171 transitions, 1750 flow [2024-06-21 16:38:27,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:38:27,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:38:27,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-21 16:38:27,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4725274725274725 [2024-06-21 16:38:27,530 INFO L175 Difference]: Start difference. First operand has 112 places, 142 transitions, 1218 flow. Second operand 7 states and 172 transitions. [2024-06-21 16:38:27,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 171 transitions, 1750 flow [2024-06-21 16:38:27,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 171 transitions, 1663 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-21 16:38:27,657 INFO L231 Difference]: Finished difference. Result has 115 places, 147 transitions, 1273 flow [2024-06-21 16:38:27,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1273, PETRI_PLACES=115, PETRI_TRANSITIONS=147} [2024-06-21 16:38:27,657 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 60 predicate places. [2024-06-21 16:38:27,657 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 147 transitions, 1273 flow [2024-06-21 16:38:27,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:38:27,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:38:27,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:38:27,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 16:38:27,658 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:38:27,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:38:27,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1063516318, now seen corresponding path program 1 times [2024-06-21 16:38:27,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:38:27,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054569800] [2024-06-21 16:38:27,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:38:27,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:38:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:38:28,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:38:28,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:38:28,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054569800] [2024-06-21 16:38:28,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054569800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:38:28,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:38:28,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:38:28,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230601354] [2024-06-21 16:38:28,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:38:28,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:38:28,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:38:28,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:38:28,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:38:28,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 16:38:28,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 147 transitions, 1273 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:38:28,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:38:28,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 16:38:28,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:38:30,031 INFO L124 PetriNetUnfolderBase]: 11096/15519 cut-off events. [2024-06-21 16:38:30,032 INFO L125 PetriNetUnfolderBase]: For 346721/346793 co-relation queries the response was YES. [2024-06-21 16:38:30,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94254 conditions, 15519 events. 11096/15519 cut-off events. For 346721/346793 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 85919 event pairs, 4679 based on Foata normal form. 11/15412 useless extension candidates. Maximal degree in co-relation 94208. Up to 14821 conditions per place. [2024-06-21 16:38:30,166 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 149 selfloop transitions, 31 changer transitions 0/191 dead transitions. [2024-06-21 16:38:30,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 191 transitions, 1829 flow [2024-06-21 16:38:30,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:38:30,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:38:30,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-21 16:38:30,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027472527472527 [2024-06-21 16:38:30,167 INFO L175 Difference]: Start difference. First operand has 115 places, 147 transitions, 1273 flow. Second operand 7 states and 183 transitions. [2024-06-21 16:38:30,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 191 transitions, 1829 flow [2024-06-21 16:38:30,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 191 transitions, 1723 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-21 16:38:30,417 INFO L231 Difference]: Finished difference. Result has 118 places, 156 transitions, 1367 flow [2024-06-21 16:38:30,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1367, PETRI_PLACES=118, PETRI_TRANSITIONS=156} [2024-06-21 16:38:30,417 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 63 predicate places. [2024-06-21 16:38:30,418 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 156 transitions, 1367 flow [2024-06-21 16:38:30,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:38:30,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:38:30,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:38:30,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 16:38:30,418 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:38:30,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:38:30,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1173810564, now seen corresponding path program 1 times [2024-06-21 16:38:30,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:38:30,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486211396] [2024-06-21 16:38:30,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:38:30,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:38:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:38:31,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:38:31,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:38:31,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486211396] [2024-06-21 16:38:31,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486211396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:38:31,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:38:31,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:38:31,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967613765] [2024-06-21 16:38:31,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:38:31,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:38:31,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:38:31,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:38:31,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:38:31,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 16:38:31,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 156 transitions, 1367 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:38:31,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:38:31,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 16:38:31,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:38:33,333 INFO L124 PetriNetUnfolderBase]: 11350/15916 cut-off events. [2024-06-21 16:38:33,333 INFO L125 PetriNetUnfolderBase]: For 389956/390029 co-relation queries the response was YES. [2024-06-21 16:38:33,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100983 conditions, 15916 events. 11350/15916 cut-off events. For 389956/390029 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 88891 event pairs, 4688 based on Foata normal form. 19/15809 useless extension candidates. Maximal degree in co-relation 100935. Up to 14611 conditions per place. [2024-06-21 16:38:33,476 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 148 selfloop transitions, 53 changer transitions 0/212 dead transitions. [2024-06-21 16:38:33,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 212 transitions, 1999 flow [2024-06-21 16:38:33,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:38:33,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:38:33,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-21 16:38:33,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096153846153846 [2024-06-21 16:38:33,479 INFO L175 Difference]: Start difference. First operand has 118 places, 156 transitions, 1367 flow. Second operand 8 states and 212 transitions. [2024-06-21 16:38:33,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 212 transitions, 1999 flow [2024-06-21 16:38:33,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 212 transitions, 1889 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-21 16:38:33,653 INFO L231 Difference]: Finished difference. Result has 123 places, 164 transitions, 1488 flow [2024-06-21 16:38:33,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1488, PETRI_PLACES=123, PETRI_TRANSITIONS=164} [2024-06-21 16:38:33,654 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 68 predicate places. [2024-06-21 16:38:33,654 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 164 transitions, 1488 flow [2024-06-21 16:38:33,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:38:33,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:38:33,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:38:33,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 16:38:33,654 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:38:33,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:38:33,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1063815220, now seen corresponding path program 1 times [2024-06-21 16:38:33,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:38:33,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931105233] [2024-06-21 16:38:33,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:38:33,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:38:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:38:34,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:38:34,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:38:34,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931105233] [2024-06-21 16:38:34,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931105233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:38:34,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:38:34,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:38:34,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482181374] [2024-06-21 16:38:34,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:38:34,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:38:34,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:38:34,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:38:34,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:38:34,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 16:38:34,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 164 transitions, 1488 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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) [2024-06-21 16:38:34,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:38:34,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 16:38:34,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:38:36,165 INFO L124 PetriNetUnfolderBase]: 12004/16560 cut-off events. [2024-06-21 16:38:36,166 INFO L125 PetriNetUnfolderBase]: For 413374/413374 co-relation queries the response was YES. [2024-06-21 16:38:36,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105987 conditions, 16560 events. 12004/16560 cut-off events. For 413374/413374 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 89882 event pairs, 4994 based on Foata normal form. 3/16562 useless extension candidates. Maximal degree in co-relation 105938. Up to 16296 conditions per place. [2024-06-21 16:38:36,336 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 174 selfloop transitions, 29 changer transitions 0/209 dead transitions. [2024-06-21 16:38:36,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 209 transitions, 2316 flow [2024-06-21 16:38:36,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:38:36,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:38:36,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-21 16:38:36,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47527472527472525 [2024-06-21 16:38:36,337 INFO L175 Difference]: Start difference. First operand has 123 places, 164 transitions, 1488 flow. Second operand 7 states and 173 transitions. [2024-06-21 16:38:36,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 209 transitions, 2316 flow [2024-06-21 16:38:36,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 209 transitions, 2226 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-21 16:38:36,597 INFO L231 Difference]: Finished difference. Result has 129 places, 178 transitions, 1713 flow [2024-06-21 16:38:36,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1398, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1713, PETRI_PLACES=129, PETRI_TRANSITIONS=178} [2024-06-21 16:38:36,597 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 74 predicate places. [2024-06-21 16:38:36,597 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 178 transitions, 1713 flow [2024-06-21 16:38:36,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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) [2024-06-21 16:38:36,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:38:36,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:38:36,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 16:38:36,598 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:38:36,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:38:36,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1063814848, now seen corresponding path program 2 times [2024-06-21 16:38:36,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:38:36,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522989515] [2024-06-21 16:38:36,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:38:36,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:38:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:38:37,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:38:37,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:38:37,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522989515] [2024-06-21 16:38:37,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522989515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:38:37,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:38:37,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:38:37,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459822179] [2024-06-21 16:38:37,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:38:37,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:38:37,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:38:37,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:38:37,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:38:37,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 16:38:37,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 178 transitions, 1713 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:38:37,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:38:37,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 16:38:37,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:38:39,446 INFO L124 PetriNetUnfolderBase]: 11660/16318 cut-off events. [2024-06-21 16:38:39,446 INFO L125 PetriNetUnfolderBase]: For 470711/470897 co-relation queries the response was YES. [2024-06-21 16:38:39,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110342 conditions, 16318 events. 11660/16318 cut-off events. For 470711/470897 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 90857 event pairs, 4675 based on Foata normal form. 11/16177 useless extension candidates. Maximal degree in co-relation 110290. Up to 15450 conditions per place. [2024-06-21 16:38:39,595 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 167 selfloop transitions, 39 changer transitions 0/220 dead transitions. [2024-06-21 16:38:39,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 220 transitions, 2489 flow [2024-06-21 16:38:39,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:38:39,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:38:39,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-21 16:38:39,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49725274725274726 [2024-06-21 16:38:39,596 INFO L175 Difference]: Start difference. First operand has 129 places, 178 transitions, 1713 flow. Second operand 7 states and 181 transitions. [2024-06-21 16:38:39,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 220 transitions, 2489 flow [2024-06-21 16:38:39,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 220 transitions, 2391 flow, removed 44 selfloop flow, removed 2 redundant places. [2024-06-21 16:38:39,938 INFO L231 Difference]: Finished difference. Result has 135 places, 188 transitions, 1913 flow [2024-06-21 16:38:39,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1913, PETRI_PLACES=135, PETRI_TRANSITIONS=188} [2024-06-21 16:38:39,939 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 80 predicate places. [2024-06-21 16:38:39,939 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 188 transitions, 1913 flow [2024-06-21 16:38:39,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:38:39,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:38:39,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:38:39,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 16:38:39,939 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:38:39,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:38:39,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1494131706, now seen corresponding path program 2 times [2024-06-21 16:38:39,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:38:39,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624166021] [2024-06-21 16:38:39,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:38:39,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:38:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:38:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:38:40,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:38:40,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624166021] [2024-06-21 16:38:40,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624166021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:38:40,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:38:40,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:38:40,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468039867] [2024-06-21 16:38:40,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:38:40,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:38:40,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:38:40,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:38:40,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:38:41,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 16:38:41,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 188 transitions, 1913 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:38:41,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:38:41,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 16:38:41,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:38:43,794 INFO L124 PetriNetUnfolderBase]: 11653/16290 cut-off events. [2024-06-21 16:38:43,794 INFO L125 PetriNetUnfolderBase]: For 526491/526682 co-relation queries the response was YES. [2024-06-21 16:38:43,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115269 conditions, 16290 events. 11653/16290 cut-off events. For 526491/526682 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 90397 event pairs, 3431 based on Foata normal form. 19/16135 useless extension candidates. Maximal degree in co-relation 115214. Up to 14284 conditions per place. [2024-06-21 16:38:43,959 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 155 selfloop transitions, 61 changer transitions 0/230 dead transitions. [2024-06-21 16:38:43,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 230 transitions, 2477 flow [2024-06-21 16:38:43,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:38:43,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:38:43,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-21 16:38:43,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192307692307693 [2024-06-21 16:38:43,960 INFO L175 Difference]: Start difference. First operand has 135 places, 188 transitions, 1913 flow. Second operand 7 states and 189 transitions. [2024-06-21 16:38:43,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 230 transitions, 2477 flow [2024-06-21 16:38:44,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 230 transitions, 2342 flow, removed 55 selfloop flow, removed 3 redundant places. [2024-06-21 16:38:44,377 INFO L231 Difference]: Finished difference. Result has 139 places, 188 transitions, 1913 flow [2024-06-21 16:38:44,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1913, PETRI_PLACES=139, PETRI_TRANSITIONS=188} [2024-06-21 16:38:44,377 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 84 predicate places. [2024-06-21 16:38:44,377 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 188 transitions, 1913 flow [2024-06-21 16:38:44,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:38:44,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:38:44,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:38:44,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 16:38:44,378 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:38:44,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:38:44,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1503328476, now seen corresponding path program 3 times [2024-06-21 16:38:44,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:38:44,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037411990] [2024-06-21 16:38:44,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:38:44,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:38:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:38:45,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:38:45,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:38:45,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037411990] [2024-06-21 16:38:45,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037411990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:38:45,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:38:45,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:38:45,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819549997] [2024-06-21 16:38:45,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:38:45,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:38:45,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:38:45,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:38:45,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:38:45,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 16:38:45,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 188 transitions, 1913 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:38:45,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:38:45,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 16:38:45,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:38:47,957 INFO L124 PetriNetUnfolderBase]: 11592/16206 cut-off events. [2024-06-21 16:38:47,958 INFO L125 PetriNetUnfolderBase]: For 548414/548605 co-relation queries the response was YES. [2024-06-21 16:38:48,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115658 conditions, 16206 events. 11592/16206 cut-off events. For 548414/548605 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 89902 event pairs, 2891 based on Foata normal form. 19/16059 useless extension candidates. Maximal degree in co-relation 115601. Up to 14015 conditions per place. [2024-06-21 16:38:48,084 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 149 selfloop transitions, 63 changer transitions 0/226 dead transitions. [2024-06-21 16:38:48,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 226 transitions, 2479 flow [2024-06-21 16:38:48,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:38:48,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:38:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-21 16:38:48,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-21 16:38:48,086 INFO L175 Difference]: Start difference. First operand has 139 places, 188 transitions, 1913 flow. Second operand 7 states and 182 transitions. [2024-06-21 16:38:48,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 226 transitions, 2479 flow [2024-06-21 16:38:48,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 226 transitions, 2317 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-21 16:38:48,306 INFO L231 Difference]: Finished difference. Result has 139 places, 189 transitions, 1912 flow [2024-06-21 16:38:48,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1912, PETRI_PLACES=139, PETRI_TRANSITIONS=189} [2024-06-21 16:38:48,307 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 84 predicate places. [2024-06-21 16:38:48,307 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 189 transitions, 1912 flow [2024-06-21 16:38:48,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:38:48,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:38:48,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:38:48,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 16:38:48,307 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:38:48,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:38:48,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1418078260, now seen corresponding path program 2 times [2024-06-21 16:38:48,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:38:48,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118992035] [2024-06-21 16:38:48,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:38:48,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:38:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:38:49,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:38:49,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:38:49,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118992035] [2024-06-21 16:38:49,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118992035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:38:49,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:38:49,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:38:49,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620395674] [2024-06-21 16:38:49,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:38:49,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:38:49,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:38:49,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:38:49,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:38:49,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 16:38:49,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 189 transitions, 1912 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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) [2024-06-21 16:38:49,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:38:49,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 16:38:49,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:38:51,267 INFO L124 PetriNetUnfolderBase]: 12102/16714 cut-off events. [2024-06-21 16:38:51,267 INFO L125 PetriNetUnfolderBase]: For 543537/543553 co-relation queries the response was YES. [2024-06-21 16:38:51,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118644 conditions, 16714 events. 12102/16714 cut-off events. For 543537/543553 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 91274 event pairs, 4945 based on Foata normal form. 17/16729 useless extension candidates. Maximal degree in co-relation 118586. Up to 16327 conditions per place. [2024-06-21 16:38:51,540 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 173 selfloop transitions, 47 changer transitions 0/226 dead transitions. [2024-06-21 16:38:51,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 226 transitions, 2836 flow [2024-06-21 16:38:51,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:38:51,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:38:51,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-21 16:38:51,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46703296703296704 [2024-06-21 16:38:51,541 INFO L175 Difference]: Start difference. First operand has 139 places, 189 transitions, 1912 flow. Second operand 7 states and 170 transitions. [2024-06-21 16:38:51,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 226 transitions, 2836 flow [2024-06-21 16:38:51,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 226 transitions, 2669 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-21 16:38:51,766 INFO L231 Difference]: Finished difference. Result has 142 places, 199 transitions, 2056 flow [2024-06-21 16:38:51,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2056, PETRI_PLACES=142, PETRI_TRANSITIONS=199} [2024-06-21 16:38:51,767 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 87 predicate places. [2024-06-21 16:38:51,767 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 199 transitions, 2056 flow [2024-06-21 16:38:51,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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) [2024-06-21 16:38:51,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:38:51,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:38:51,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 16:38:51,767 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:38:51,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:38:51,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1418077888, now seen corresponding path program 3 times [2024-06-21 16:38:51,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:38:51,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087686746] [2024-06-21 16:38:51,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:38:51,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:38:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:38:52,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:38:52,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:38:52,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087686746] [2024-06-21 16:38:52,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087686746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:38:52,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:38:52,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:38:52,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540559524] [2024-06-21 16:38:52,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:38:52,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:38:52,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:38:52,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:38:52,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:38:52,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 16:38:52,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 199 transitions, 2056 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:38:52,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:38:52,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 16:38:52,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:38:54,871 INFO L124 PetriNetUnfolderBase]: 11689/16365 cut-off events. [2024-06-21 16:38:54,871 INFO L125 PetriNetUnfolderBase]: For 600847/601139 co-relation queries the response was YES. [2024-06-21 16:38:54,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121163 conditions, 16365 events. 11689/16365 cut-off events. For 600847/601139 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 91148 event pairs, 4687 based on Foata normal form. 17/16224 useless extension candidates. Maximal degree in co-relation 121103. Up to 15314 conditions per place. [2024-06-21 16:38:55,159 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 164 selfloop transitions, 58 changer transitions 0/238 dead transitions. [2024-06-21 16:38:55,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 238 transitions, 3012 flow [2024-06-21 16:38:55,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:38:55,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:38:55,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-21 16:38:55,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945054945054945 [2024-06-21 16:38:55,160 INFO L175 Difference]: Start difference. First operand has 142 places, 199 transitions, 2056 flow. Second operand 7 states and 180 transitions. [2024-06-21 16:38:55,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 238 transitions, 3012 flow [2024-06-21 16:38:55,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 238 transitions, 2861 flow, removed 56 selfloop flow, removed 3 redundant places. [2024-06-21 16:38:55,442 INFO L231 Difference]: Finished difference. Result has 147 places, 209 transitions, 2272 flow [2024-06-21 16:38:55,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1905, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2272, PETRI_PLACES=147, PETRI_TRANSITIONS=209} [2024-06-21 16:38:55,442 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 92 predicate places. [2024-06-21 16:38:55,442 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 209 transitions, 2272 flow [2024-06-21 16:38:55,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:38:55,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:38:55,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:38:55,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 16:38:55,443 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:38:55,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:38:55,443 INFO L85 PathProgramCache]: Analyzing trace with hash -301633674, now seen corresponding path program 3 times [2024-06-21 16:38:55,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:38:55,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303858696] [2024-06-21 16:38:55,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:38:55,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:38:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:38:56,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:38:56,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:38:56,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303858696] [2024-06-21 16:38:56,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303858696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:38:56,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:38:56,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:38:56,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346835683] [2024-06-21 16:38:56,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:38:56,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:38:56,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:38:56,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:38:56,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:38:56,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 16:38:56,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 209 transitions, 2272 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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) [2024-06-21 16:38:56,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:38:56,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 16:38:56,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:38:58,667 INFO L124 PetriNetUnfolderBase]: 12186/16839 cut-off events. [2024-06-21 16:38:58,667 INFO L125 PetriNetUnfolderBase]: For 653844/653860 co-relation queries the response was YES. [2024-06-21 16:38:58,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128639 conditions, 16839 events. 12186/16839 cut-off events. For 653844/653860 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 91737 event pairs, 4959 based on Foata normal form. 17/16854 useless extension candidates. Maximal degree in co-relation 128576. Up to 16440 conditions per place. [2024-06-21 16:38:58,958 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 176 selfloop transitions, 56 changer transitions 0/238 dead transitions. [2024-06-21 16:38:58,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 238 transitions, 3002 flow [2024-06-21 16:38:58,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:38:58,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:38:58,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-21 16:38:58,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-21 16:38:58,959 INFO L175 Difference]: Start difference. First operand has 147 places, 209 transitions, 2272 flow. Second operand 7 states and 168 transitions. [2024-06-21 16:38:58,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 238 transitions, 3002 flow [2024-06-21 16:38:59,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 238 transitions, 2824 flow, removed 63 selfloop flow, removed 3 redundant places. [2024-06-21 16:38:59,339 INFO L231 Difference]: Finished difference. Result has 151 places, 214 transitions, 2316 flow [2024-06-21 16:38:59,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2316, PETRI_PLACES=151, PETRI_TRANSITIONS=214} [2024-06-21 16:38:59,340 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 96 predicate places. [2024-06-21 16:38:59,340 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 214 transitions, 2316 flow [2024-06-21 16:38:59,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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) [2024-06-21 16:38:59,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:38:59,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:38:59,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-21 16:38:59,340 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:38:59,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:38:59,341 INFO L85 PathProgramCache]: Analyzing trace with hash -893908068, now seen corresponding path program 1 times [2024-06-21 16:38:59,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:38:59,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639699444] [2024-06-21 16:38:59,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:38:59,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:38:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:39:00,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:39:00,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:39:00,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639699444] [2024-06-21 16:39:00,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639699444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:39:00,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:39:00,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:39:00,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610730864] [2024-06-21 16:39:00,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:39:00,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:39:00,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:39:00,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:39:00,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:39:00,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-21 16:39:00,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 214 transitions, 2316 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 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) [2024-06-21 16:39:00,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:39:00,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-21 16:39:00,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand